Device and method for repairing filling body by inducing microorganism nano material based on sound-heat effectTechnical Field
The invention relates to the technical field of filling exploitation, in particular to a device and a method for repairing a filling body by inducing a microbial nano material based on an acoustic-thermal effect.
Background
The mine tunnel and stope filling body are often cracked or failed in the long-term stress and strain environment, so that the bearing capacity of the mine tunnel and stope filling body is reduced, and potential safety hazards are easily caused. The existing repairing technology mostly adopts water-based grouting materials, but the water-based grouting repairing materials have the problems of secondary softening, poor fluidity control, difficult solidification regulation and control and the like. In recent years, a microbial repair technology is researched in repairing rock with a fracture surface, and a microbial mineralization technology can generate precipitates such as calcium carbonate and the like in a fracture or heterogeneous area through microbial metabolism, so that the microbial repair technology has good self-repairing property and long-term stability. However, the existing grouting repair technology containing microorganisms has complicated distribution and precipitation efficiency control conditions, and if microbial flora is unevenly dispersed in actual engineering, the repair efficiency of the damaged filler is greatly reduced.
Patent CN113323441a discloses a method for improving the self-repairing width of concrete cracks, which mainly improves the self-repairing width of concrete by adding homogenized sand powder soaked with nutrient solution into the cracks and bacterial solution. Firstly adding homogenized sand powder soaked with nutrient solution into the crack, then adding bacterial solution, generating calcium carbonate through continuous metabolism of microorganisms, continuously enriching calcium carbonate crystal ions, and finally realizing crack repair by using the generated calcium carbonate as a cementing material.
Patent CN112299767a discloses a cheap and efficient microbial self-repairing concrete and a preparation method thereof, the crack self-repairing concrete uses aerobic basophilic mixed bacteria with mineralization deposition characteristics as a self-repairing agent, uses whey and calcium acetate as nutrient substances of mixed bacteria metabolism, and uses calcium carbonate precipitation generated in the metabolism process of the microbial self-repairing agent to carry out efficient self-repairing on concrete cracks, thereby improving the crack self-repairing capability of the concrete in the service period, and further improving the durability of the concrete.
Meanwhile, patent CN111155960B discloses a hole sealing method for coal bed gas extraction drilling based on the MICP technology, wherein a sealing material is filled to form a closed space inside the drilling, nutrient solution and microorganisms are injected in stages, a large amount of carbonate is generated through reaction, and cracks are repaired, so that the occurrence of air leakage phenomenon in the high-concentration gas extraction process is prevented. The technology is difficult to control the problem of uniform flow and diffusion of nutrient solution and microorganisms, and if the nutrient solution and the microorganisms are unevenly distributed, local solidification can be caused, so that the crack repairing effect is poor.
Patent CN107446917a discloses a regulating method for improving activity of saccharomycetes, which uses electromagnetic wave with a certain frequency to carry out resonance stimulation on saccharomycetes by matching with sound wave equipment, thus improving cell permeability power, enhancing cell activity and promoting chemical decomposition and synthesis in vivo. The technical medium is a solution environment, and is similar to the transmission of sound waves in a homogeneous environment, but underground rock formations, rocks and the like are heterogeneous, the pore-crack structure in the filling body is more complex after the filling body is cut and damaged, and the sound wave transmission can have poor effect in certain areas.
In practical applications, the technical aspect of repairing fractured coal rock mass or stope filling in a loaded state by injecting a microorganism-containing repair grouting repair material still faces a plurality of challenges. On one hand, the internal structure of the coal, rock mass or filling body with the cracks is complex, and the targeting of the bacterial colony is difficult to realize and the bacterial colony is uniformly distributed in the area of the crack surface, so that the repairing efficiency is low, the bacterial colony is easy to form blind hole aggregation in the pore, and the distribution uniformity is poor. Under the condition, only partial flora dense areas can form local crack repairing synergistic areas, the whole crack repairing area is limited, a large number of weak structural surfaces still exist in the whole crack repairing area, so that the risk of instability of coal and rock mass still exists, and the long-term stable bearing of the filling body is affected. On the other hand, the traditional flora liquid takes a water-based grouting material as a carrier, secondary softening is easily caused to the filling body (coal rock mass) again, and meanwhile, water can trigger a series of water locking reactions and the like to influence the fluidity of the repairing material, so that the repairing material is difficult to penetrate through all cracks and weak structure interfaces, and a plurality of unrepaired areas appear along with gradual solidification of the grouting repairing material, so that the overall bearing capacity of the repaired filling body is seriously influenced. Meanwhile, the underground in-situ stress state can cause the partial closure of the grouting channel, and further influence the diffusion of grouting materials. Thus, the prior art still has a bottleneck that is difficult to overcome in improving the overall repair efficiency, and further innovations and optimizations are needed.
Disclosure of Invention
The invention aims to provide a device and a method for repairing a filling body by inducing a microbial nano material based on an acoustic-thermal effect, and in order to achieve the purposes, the invention provides the following technical scheme:
The device for repairing the filling body by inducing the microbial nano material based on the sound-heat effect comprises the filling body, wherein the bottom of the filling body is a bottom plate, the top of the filling body is a top plate, an overburden layer for forming a load is arranged on the top plate, grouting drilling holes are arranged in the filling body in a deep and shallow hole mode by taking the middle part of the filling body as the center of a grouting repairing area, sound wave monitoring probes are uniformly distributed on the filling body, each grouting drilling hole is respectively connected with a non-water-based nano repairing material A storage tank and a non-water-based nano material B storage tank through pipelines, the non-water-based nano repairing material A storage tank is used for inputting the non-water-based nano material mixed with microbial flora into the grouting drilling holes, and the non-water-based nano material B storage tank is used for inputting the non-water-based nano material mixed with an accelerator into the grouting drilling holes;
The bottom of the grouting drilling hole is provided with an acoustic-thermal combination control device, the acoustic-thermal combination control device comprises a multi-frequency acoustic wave array, a sound field modulation module, an auxiliary heat source and a multifunctional monitoring sensor, the multi-frequency acoustic wave array and the sound field modulation module are combined to generate low, medium and high frequency sound fields which are used for promoting the uniform distribution of acoustic nano particles and accelerating the mineralization reaction of microorganisms, and the auxiliary heat source is used for promoting the fluidity of non-water-based nano materials.
Further, the acoustic wave monitoring probe is connected with the ground monitoring center through the information transfer processing interface, and is used for processing acoustic wave monitoring data and generating a three-dimensional fracture space model of the filling body.
Further, the planes of the grouting drilling arrangement exhibit a diffusion ring or spider web distribution.
Furthermore, the non-water-based nano repair material A storage tank is connected with a microorganism storage tank and a non-water-based nano material storage tank, the non-water-based nano material B storage tank is connected with an accelerator storage tank and is also connected with the non-water-based nano material storage tank, and valves are arranged on outlet pipelines of the non-water-based nano repair material A storage tank and the non-water-based nano material B storage tank.
The method for repairing the filling body by using the microbial nano material based on the acoustic-thermal effect comprises the following steps:
s1, opening a valve at the outlet of a storage tank of the non-water-based nano repair material A, and injecting the non-water-based nano repair material A containing microbial flora into the filling body through each grouting drilling hole;
S2, starting an acoustic-thermal combination control device at the bottom of a grouting borehole, applying a low-frequency sound field with the frequency of 0.1-10 kHz, simultaneously starting an auxiliary heat source, setting the temperature of the auxiliary heat source at 40-45 ℃, promoting the flow diffusion of a non-water-based nano repair material A, synchronizing sound field change data to a ground monitoring center for monitoring until the non-water-based nano repair material A is uniformly distributed in a three-dimensional fracture space model imaging area, enabling the non-water-based nano repair material A to flow and image and cover the three-dimensional fracture space model imaging, synchronously closing the auxiliary heat source, and starting a multifunctional monitoring sensor to monitor the pH value of the bottom position of each grouting borehole;
S3, applying an intermediate frequency sound field with the frequency of 100 kHz-1 MHz by adjusting the multi-frequency sound wave array and the sound field modulation module, and promoting the acoustic nano particles of the non-water-based nano repair material A to start to agglomerate under the action of the intermediate frequency sound wave to form microorganism induction particles;
S5, the multi-frequency sound wave array and the sound field modulation module are regulated again, the high-frequency sound field with the frequency of 1 MHz-10 MHz is set to promote the further increase of the microbial flora in the non-water-based nano repairing material A, the repairing activity of the microbial flora is increased, the ground monitoring center is synchronously controlled to be connected with the multifunctional monitoring sensor to monitor the change condition of the microbial distribution area, and when the microbial flora distribution area is gradually reduced until the microbial flora disappears, the repairing work of the crack filling body is finished;
S6, opening a non-water-based nano material B storage tank, backfilling the grouting drilling hole through the non-water-based nano material B, and completely generating a grouting material B condensate.
Preferably, the time ratio of the intermediate frequency to the low frequency for alternating sound field conversion is 2:1-3:1, and the total time is 3-5 hours.
Preferably, in step S2, the pH range is 6.5 to 8.5.
Preferably, in step S5, the crack filler is left to stand for 2 to 3 days after the repair work is completed.
Preferably, the volume fraction of the acoustic nano particles is 10-30%, the initial particle size is 5-100 nm, and the particle size after aggregation into microorganism-induced particles is 50-300 um.
Preferably, the time for independently applying the low, medium and high frequency sound fields is 2-6 hours.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention improves the fluidity of the non-water-based nano material through the sound-heat synergistic effect, promotes the uniform distribution of the grouting material, avoids the occurrence of a distribution blind area, and avoids the problem of secondary degradation of the water-based grouting material to the filling body.
2. According to the invention, the acoustic nanoparticles with small particle sizes are aggregated into the flora-induced particles with large particle sizes by utilizing the medium-frequency sound field, and meanwhile, a certain supporting effect is achieved on the grouting channel, so that the shrinkage effect of the grouting channel caused by the creep effect under the action of the stress of the original rock is avoided.
3. According to the invention, the distribution of the microbial flora induction particles is regulated and controlled through the cooperation of the acoustic-thermal field, so that the uniform distribution of the microbial flora is realized, and the multi-point mineralization repair and acceleration are realized. The metabolic activity of the flora is monitored by utilizing the record of the change of the electric signal, so that the diffusion range of the flora is flexibly regulated and controlled, and the visual regulation and control of the diffusion process are realized.
4. According to the invention, under the synergistic effect of acoustic-thermal multi-stage, the transmission of nutrients in cracks is promoted, the proliferation of microorganisms is promoted, additional metabolic substrates are provided for the microorganisms, the decomposition and mineralization of mineralized raw materials are accelerated, meanwhile, the rapid transfer of induced particles and flora can be promoted by sound field regulation, and the repairing efficiency of the filling body is accelerated.
Drawings
FIG. 1 is a schematic view of an overall device for inducing repair of a filler by a microbial nanomaterial based on the acoustic-thermal effect;
FIG. 2 is a left side view of the grouting borehole of FIG. 1;
FIG. 3 is a schematic illustration of spider web distribution of a grouting borehole arrangement;
FIG. 4 is a graph of a profile of an acoustic wave probe;
FIG. 5 is a schematic side cross-sectional view of a grouting borehole arrangement and acoustic probe distribution;
FIG. 6 is a schematic illustration of a grouting borehole arrangement and acoustic probe distribution forward section;
FIG. 7 is a schematic illustration of the increase in penetration of the acousto-thermal effect;
FIG. 8 is a schematic diagram of a fracture space model without filling material injected;
FIG. 9 is a schematic diagram of a low frequency sound field-assisted heating promoting slurry A uniform diffusion stage;
FIG. 10 is a schematic diagram showing the stage of particle generation, uniform distribution and microbial adsorption migration induced by a medium-low frequency sound field;
FIG. 11 is a schematic diagram of the stages of microorganism proliferation, activation and mineralization under the action of a high frequency sound field;
FIG. 12 is a schematic diagram of a microorganism synergistic mineralization backfill grouting drilling stage under the action of an acoustic-thermal field.
In the figure:
1. Overburden formation, 2, top plate, 3, filling body, 4, bottom plate, 5, grouting drilling, 6, acoustic monitoring probe, 7, information transfer processing interface, 8, ground monitoring center, 9, acoustic-thermal combination control device, 901, multifrequency acoustic array, 902, acoustic field modulation module, 903, auxiliary heat source, 904, multifunctional monitoring sensor, 906, thermal surge effect, 10, three-dimensional fracture space model, 11, microorganism storage tank, 12, non-water-based nanomaterial storage tank, 13, accelerator storage tank, 14, non-water-based nanomaterial A storage tank, 1401, non-water-based nanomaterial A, 1403, grouting material A solidification block, 1501, non-water-based nanomaterial B storage tank, 1503, grouting material B solidification body, 16, microorganism flora, 17, microorganism induction particles, 1701, acoustic nanoparticle, 18, blank area, 19, slurry flow intersection area.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail by combining the embodiments and the drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. The following describes the technical scheme of the present invention in detail with reference to examples and drawings, but the scope of protection is not limited thereto.
The device and the method for repairing the cracked filler by the non-water-based nano material containing microorganisms by the aid of the acoustic-thermal effect control the uniform diffusion form of the non-water-based acoustic nano repair material and microbial flora through a sound field, eliminate repair blind areas, greatly promote the repair efficiency of the filler, avoid the influence of stress conditions and secondary degradation, and finally realize stable bearing of the filler.
Example 1
Referring to fig. 1 to 12, the embodiment provides a device for repairing a filling body based on an acoustic-thermal effect-induced microorganism nano material, which comprises a filling body 3, wherein the bottom of the filling body 3 is a bottom plate 4, the top of the filling body 3 is a top plate 2, an overburden rock layer 1 for forming a load is arranged on the top plate 2, grouting holes 5 are arranged in the filling body 3 in a deep and shallow hole mode by taking the middle part of the filling body 3 as the center of a grouting repairing area, the planes of the grouting holes 5 are distributed in a diffusion ring or spider net shape, the distance between the diffusion rings of the grouting holes 5 is 0.5-6 m, and the depth of the grouting holes 5 is 0-1.5 m near a hole fracture surface.
The deep and shallow holes of the grouting drilling holes 5 are arranged with the middle part as the center, and can be arranged at intervals when the grouting drilling holes are diffused to the periphery, and flush holes can be arranged if necessary, so that the good diffusion effect of the filling material is ensured according to the adjustment of the crack space.
The filling body 3 is provided with a diagonal (multi-row-multi-column) acoustic wave monitoring probe 6, the row-column spacing is 1-3 m, the acoustic wave monitoring probe 6 is connected with a ground monitoring center 8 through an information transfer processing interface 7 for processing acoustic wave monitoring data by performing all-round monitoring on acoustic waves emitted by the filling body 3 with cracks through multi-point acoustic wave monitoring, and the acoustic wave monitoring probe is used for generating a three-dimensional crack space model 10 of the filling body 3 and accurately identifying cracks, heterogeneous areas and position and size distribution of the cracks and heterogeneous areas in the filling body 3. The acoustic wave monitoring probe 6 emits acoustic waves with the frequency of 1-100 Hz, wherein the internal frequency of 10Hz is used for measuring medium-and small-size cracks, the inverse calculated wave speed range is 0-7000m/s, and the crack space structure in the filling body 3 can be identified.
The grouting drilling holes 5 are respectively connected with a non-water-based nano repairing material A storage tank 14 and a non-water-based nano material B storage tank 15 through pipelines, the non-water-based nano repairing material A storage tank 14 is connected with a microorganism storage tank 11 and a non-water-based nano material storage tank 12, the non-water-based nano material B storage tank 15 is connected with an accelerator storage tank 13 and is also connected with the non-water-based nano material storage tank 12, valves are arranged on outlet pipelines of the non-water-based nano repairing material A storage tank 14 and the non-water-based nano material B storage tank 15, a microorganism flora 16 is placed in the microorganism storage tank 11, carbonate mineralized strains such as alkalophilic bacteria and aminophilic bacteria are selected as the microorganism flora 16, and the microorganism concentration in the mixed slurry is 106~ 108 CFU/mL.
The non-water-based nanomaterial tank 12 is filled with a non-water-based nanomaterial, and contains acoustic nanoparticles 1701, nutrients (urea, common sugar, etc.), calcium nitrate or calcium sulfate, etc., in an organic solvent such as alcohols or ketones as a carrier. Wherein the acoustic nano particles 1701 are coated nano calcium, nano ferrite and the like, and can migrate and aggregate under the action of sound field to generate microorganism induction particles 17. The volume fraction of the acoustic nano particles 1701 is 10-30%, the initial particle size is 5-100 nm, the particle size is 50-300 um after the acoustic nano particles are aggregated into the microorganism induction particles 17, the acoustic nano particles play a role in supporting a grouting channel except the aggregation of the induced microorganisms, and meanwhile, the migration of the induction particles is further promoted by exciting heat under the action of low-frequency sound waves.
The bottom of the grouting drilling 5 is provided with an acoustic-thermal combination control device 9;
The combined sound-heat control device 9 comprises 4 parts of a multi-frequency sound wave array 901, a sound field modulation module 902, an auxiliary heat source 903 and a multifunctional monitoring sensor 904, which are connected and synchronized with the ground monitoring center 8. The combination of the multi-frequency sound wave array 901 and the sound field modulation module 902 can generate low, medium and high frequency sound fields, the frequencies of the three sound fields are respectively 0.1-10 kHz, 100 kHz-1 MHz and 1 MHz-10 MHz, the sound fields in each stage are applied for 2-6 hours, the low frequency sound field generates directional vortex to reduce the viscosity of a non-water-based material and promote the uniform distribution of nano particles, the medium frequency sound field induces particle agglomeration, negative microorganisms are adsorbed by electrostatic action, the uniformity of the microorganisms is further ensured, the grouting channel is supported, the compression effect of in-situ stress is resisted, the high frequency sound field accelerates the mineralization reaction of the microorganisms, and the decomposition of Ca+ ions and the like is accelerated.
The highest temperature of the auxiliary heat source 903 is 40-45 ℃, namely, the temperature difference delta T is generated from an injection port to a far-end low-temperature crack, a thermal surge effect 906 is generated, the fluidity of the non-water-based material is further promoted, the multifunctional monitoring sensor 904 monitors aspects, namely, particle distribution density, microorganism distribution and real-time PH value are respectively monitored through sound wave signals, multifunctional monitoring signals and the like, monitoring data are synchronous with the ground monitoring center 8, the pH setting range is 6.5-8.5, when mineralization reaction is carried out to a certain extent, the pH is adjusted through adding a small amount of acid (hydrochloric acid and the like) or alkali (calcium hydroxide and the like) outside according to requirements, and the efficient proceeding of the microorganism mineralization reaction is ensured.
The multi-frequency sound wave array 901 and the sound field modulation module 902 cooperatively adjust the sound field intensity, in the middle frequency sound field microorganism-induced particle agglomeration process, the agglomeration-dispersion process can be circulated in complex cracks through circulation alternation, wherein h Intermediate frequency：h Low frequency =2:1-3:1 (h is time), the total time is 3-5 hours, the distribution is gradually optimized, and the image display density point size and the area are basically stable until the ground monitoring center 8 presents.
The acoustic nano particles 1701 are excited by a medium-high frequency sound field of 1-10 MHz to generate heat locally, so that decomposition of urea and mineralization reaction source Ca+ in the non-water-based material is accelerated, activity of microorganisms is excited, and efficient repair is promoted. The following is a related mineralization reaction formula:
example 2
The embodiment provides a method for repairing a filling body by inducing microorganism nano materials based on an acoustic-thermal effect, which is used for repairing the filling body 3 of which the object is a critical bearing damage cube with the height of 5m, the length of 5m and the width of 5m, wherein the bottom of the filling body 3 is a bottom plate 4, the top of the filling body 3 is a top plate 2, an overburden layer 1 for forming a load is arranged on the top plate 2, and the device for repairing the filling body by inducing microorganism nano materials based on the acoustic-thermal effect is based on the embodiment 1.
Referring to fig. 1,2 and 4 to 12, the specific implementation steps are as follows:
S1, arranging 3X 3 acoustic wave monitoring probes 6 on two sides of a filling body 3, arranging and arranging the acoustic wave monitoring probes at intervals of 2m, carrying out all-round monitoring on acoustic waves emitted by the filling body 3 with cracks through multi-point acoustic wave monitoring, connecting the acoustic wave monitoring probes 6 with a ground monitoring center 8 through an information transfer processing interface 7, processing acoustic wave monitoring data, generating a three-dimensional crack space model 10 of the filling body 3, and identifying that cracks and heterogeneous areas in the filling body 3 are basically located in an area of 3m X4 m in the middle of the filling body 3.
S2, taking the middle of the filling body 3 as the center of a grouting repair area, drilling the filling body 3 in a deep and shallow hole arrangement mode, wherein the drill holes are distributed on a plane in a diffusion ring distribution (see figure 2), and the distance between two adjacent grouting drill holes 5 in the diffusion ring is 2m;
All grouting drillings 5 are connected with a non-water-based nano repairing material A storage tank 14 through pipelines, the non-water-based nano repairing material A storage tank 14 is respectively connected with a microorganism storage tank 11 and a non-water-based nano material storage tank 12, a valve at the outlet of the non-water-based nano repairing material A storage tank 14 is opened, and a non-water-based nano repairing material A1401 containing microorganism flora 16 is injected into the filling body 3 through each grouting drillings 5;
S3, starting an acoustic-thermal combination control device 9 at the bottom of the grouting drilling hole 5, modulating a low-frequency sound field, enabling the frequency to be 80kHz, simultaneously starting an auxiliary heat source 903, setting the temperature at 40 ℃, enabling the working time to be 3h, promoting flow diffusion of the non-water-based nano repair material A1401, synchronizing sound field change data to a ground monitoring center 8 for monitoring until the non-water-based nano repair material A1401 in a three-dimensional fracture space model 10 imaging area is uniformly distributed, and enabling the non-water-based nano repair material A1401 to flow and be imaged to basically cover the three-dimensional fracture space model 10, namely enabling a slurry flow intersection area 19 to gradually replace a blank area 18 in a fracture. Synchronously turning off the auxiliary heat source 903, turning on the multifunctional monitoring sensor 904, and immediately monitoring the pH value of the bottom of each grouting drilling 5, so as to ensure that the pH value floats between 7 and 8.
S4, applying an intermediate frequency sound field with the frequency of 500kHz by adjusting the multi-frequency sound wave array 901 and the sound field modulation module 902, and promoting the acoustic nano particles 1701 of the non-water-based nano repair material A1401 to start to agglomerate under the action of the intermediate frequency sound wave to form the microorganism induction particles 17. And (3) gradually forming the microorganism induction particles 17, and performing alternate sound field conversion at an intermediate frequency of 30min and a low frequency of 15min for 3 hours, so as to realize uniform distribution of the microorganism induction particles 17. The migration of the microbial flora 16 is monitored synchronously by the multifunctional monitoring sensor 904 until the flora density points are relatively uniform.
S5, the multi-frequency sound wave array 901 and the sound field modulation module 902 are adjusted again, a high-frequency sound field with the frequency of 3MHz is set to promote the further increase of the number of microbial flora 16 in the non-water-based nano repairing material A1401, the repairing activity of the microbial flora is increased, when hole and crack repairing is basically completed, the ground monitoring center 8 is synchronously controlled to be connected with the multifunctional monitoring sensor 904 to monitor the change condition of the microbial distribution area, when the microbial flora 16 distribution area is gradually reduced until the crack is eliminated, the repairing work of the crack filling body is ended, and the grouting material A solidification block 1403 is formed after standing for 2 days.
S6, backfilling the grouting drilling 5 through the non-water-based nano material B storage tank 1501, standing for 1 day to completely generate a grouting material B solidification body 1503, and carrying out omnibearing monitoring on the repaired filling body 3 through the acoustic monitoring probe 6 again to obtain a maximum difference value of 100 m/S after repairing the initial hole crack space and the peripheral area, thereby finishing the repairing work.
And selecting matrix points of j multiplied by k multiplied by l from the crack space restoration area and the peripheral area, monitoring the wave velocity of each point to be v111、…、vjkl in real time, and constructing a two-dimensional cloud picture and a three-dimensional cloud picture of the crack space restoration area through the numerical values of the position points, wherein the maximum difference value Deltav=vmax-vmin of the area is 0-100 m/s, and the fact that the wave velocity cloud picture is uniform and the restoration effect is good is proved.
Example 3
The embodiment provides a method for repairing a filling body based on an acoustic-thermal effect-induced microorganism nano material, wherein a repairing object is a filling body 3 which is a non-cube and has a certain key bearing damage of 6m in height, 11m in length and 12m in width, the bottom of the filling body 3 is a bottom plate 4, the top of the filling body 3 is a top plate 2, an overburden layer 1 for forming a load is arranged on the top plate 2, and the device for repairing the filling body based on the acoustic-thermal effect-induced microorganism nano material is based on the embodiment 1.
Referring to fig. 1, 3 to 12, the specific implementation steps are as follows:
s1, arranging acoustic wave monitoring probes 6 which are arranged and arrayed in a4 multiplied by 2 mode on two sides of a filling body 3 along the length direction, wherein the spacing between the rows and the columns is 3 multiplied by 2.5m, conducting all-dimensional monitoring on acoustic waves emitted by the filling body 3 with cracks through multipoint acoustic wave monitoring, enabling the acoustic wave monitoring probes 6 to be connected with a ground monitoring center 8 through an information transfer processing interface 7, processing acoustic wave monitoring data, generating a three-dimensional crack space model 10 of the filling body 3, and identifying cracks and heterogeneous areas in the filling body 3.
S2, taking the middle of the filling body 3 as the center of a grouting repair area, drilling the filling body 3 in a deep and shallow hole arrangement mode, wherein the drilling holes are distributed on a plane in a spider-web shape (see figure 3), the spacing between the grouting drilling holes 5 is about 3m, the deepest grouting drilling holes 5 are positioned in the deep 1m of a hole crack surface, and the shallowest grouting drilling holes 5 are positioned in the shallow 1m of the hole crack surface;
All grouting drillings 5 are connected with a non-water-based nano repairing material A storage tank 14 through pipelines, the non-water-based nano repairing material A storage tank 14 is respectively connected with a microorganism storage tank 11 and a non-water-based nano material storage tank 12, a valve at the outlet of the non-water-based nano repairing material A storage tank 14 is opened, and a non-water-based nano repairing material A1401 containing microorganism flora 16 is injected into the filling body 3 through each grouting drillings 5;
S3, starting an acoustic-thermal combination control device 9 at the bottom of the grouting drilling hole 5, modulating a low-frequency sound field, wherein the frequency is 50kHz, simultaneously starting an auxiliary heat source 903, setting the temperature at 45 ℃ and the working time at 4h, promoting the flow diffusion of the non-water-based nano repair material A1401, synchronizing sound field change data to a ground monitoring center 8 for monitoring until the non-water-based nano repair material A1401 in a three-dimensional fracture space model 10 imaging area is uniformly distributed, and enabling the non-water-based nano repair material A1401 to flow and be imaged to basically cover the three-dimensional fracture space model 10, namely enabling a slurry flow intersection area 19 to gradually replace a blank area 18 in a fracture. Synchronously turning off the auxiliary heat source 903, turning on the multifunctional monitoring sensor 904, and immediately monitoring the pH value of the bottom of each grouting drilling 5, so as to ensure that the pH value floats between 7 and 8.
S4, applying an intermediate frequency sound field for 2 hours by adjusting the multi-frequency sound wave array 901 and the sound field modulation module 902, wherein the frequency is 100kHz, and promoting the acoustic nano particles 1701 of the non-water-based nano repair material A1401 to start to agglomerate under the action of the intermediate frequency sound wave, so as to form the microorganism induction particles 17. And (3) gradually forming the microorganism induction particles 17, and performing alternate sound field conversion at an intermediate frequency of 30min and a low frequency of 15min for 4 hours, so as to realize uniform distribution of the microorganism induction particles 17. The migration of the microbial flora 16 is monitored synchronously by the multifunctional monitoring sensor 904 until the flora density points are relatively uniform.
S5, the multi-frequency sound wave array 901 and the sound field modulation module 902 are adjusted again, a high-frequency sound field with the frequency of 3.5MHz is set to promote the further increase of the number of microbial flora 16 in the non-water-based nano repairing material A1401, the repairing activity of the microbial flora is increased, when the hole and crack repairing is basically completed, the ground monitoring center 8 is synchronously controlled to be connected with the multifunctional monitoring sensor 904 to monitor the change condition of the microbial distribution area, when the microbial flora 16 distribution area is gradually reduced until disappeared, the repairing work of the crack filling body is ended, and the grouting material A is stood for 2 days to form a solidification block 1403 of the grouting material A.
S6, backfilling the grouting drilling 5 through the non-water-based nano material B storage tank 1501, standing for 1 day to completely generate a grouting material B solidification body 1503, and carrying out omnibearing monitoring on the repaired filling body 3 through the acoustic monitoring probe 6 again to obtain a maximum difference value of 100 m/S after repairing the initial hole crack space and the peripheral area, thereby finishing the repairing work.
While the invention has been described in detail in connection with specific preferred embodiments thereof, it is not to be construed as limited thereto, but rather as a result of a simple deduction or substitution by a person having ordinary skill in the art to which the invention pertains without departing from the scope of the invention defined by the appended claims.