A kind of air-cushion type bimodulus slurry shieldTechnical field
Slurry shield field is the utility model is related to, more particularly to a kind of air-cushion type bimodulus slurry shield.
Background technology
There is conventional gas cushion type mud water shield unique high workload pressure, chapelet surface pressure to control the advantage such as accurate, thereforeIt is widely used in wearing in river, constructing tunnel over strait, but because its structure type and operation principle cause on cohesive soil stratum, largelyOften occur phenomena such as cutterhead mud lining, muddy water storehouse and air cushion storehouse dregs stagnant row in the tunneling construction of rubble stratum, cause driving speedThe problems such as spending low, low construction efficiency, have a strong impact on the normal work of slurry shield；Conventional single-bin slurry shield has mud cake severalThe advantages such as rate is low, dregs transfer efficiency height, are applied in constructing tunnel, but have that muddy water storehouse pressure controling precision is low, major diameterThe problems such as stone can not be handled, pressure oscillation is very big, easily the muddy water circulatory system of shield is impacted, has a strong impact on shieldService life and be easily caused earth's surface and seriously settle.
The application for a patent for invention text that existing application publication number is the A of CN 104863610, data of publication of application is 2015.08.26Part discloses a kind of muddy water circulatory system and control method that can directly or indirectly control, including enters to starch house steward and plasma discharge is totalPipe, enters to starch and is connected with bypass pipe between house steward and plasma discharge house steward, enters to starch house steward and be provided with into stock pump, plasma discharge house steward to be provided with plasma dischargePump, enters to starch the first pulp-inlet pipe and the second pulp-inlet pipe is connected with house steward, and the first discharge pipe and the second discharge pipe are connected with plasma discharge house steward,First pulp-inlet pipe, the first discharge pipe are connected on muddy water storehouse, and the second pulp-inlet pipe, the second discharge pipe are connected on air cushion storehouse, and firstControl valve is equipped with pulp-inlet pipe, the second pulp-inlet pipe, the first discharge pipe and the second discharge pipe and bypass pipe.It is being not likely to produce bulkDuring the stratum driving of deposit, using indirect control pattern, now enter stock pump and slurry pump is opened, open the second pulp-inlet pipe and theTwo discharge pipes, mud door is opened, close or open the first pulp-inlet pipe, close the first discharge pipe；With being also easy to produce massive depositDuring layer driving, using direct-type control module, now enter stock pump and slurry pump opened, close the second pulp-inlet pipe and the second discharge pipe,Mud door is closed, opens the first discharge pipe and the first pulp-inlet pipe.
Although although the above-mentioned circulatory system and control method can be when the stratum for being not likely to produce massive deposit is tunneledChapelet face offer Stress control, but mud door pressure output control that can only be between muddy water storehouse and air cushion storehouse, cause to supportThe Stress control in sub- face is unbalanced, has pressure oscillation generation；And when being tunneled on the stratum for being also easy to produce massive deposit, with normalThe mode of rule single-bin slurry shield is carried out, then can not realize the transmission of air cushion pressure, can only be controlled by entering plasma discharge flowThe pressure in chapelet face, therefore the pressure controling precision that muddy water storehouse be present is very low, pressure oscillation is very big, major diameter stone can not be handledThe problems such as, easily the muddy water circulatory system of shield is impacted, the service life of shield is had a strong impact on and to be easily caused earth's surface tightResedimentation.
Utility model content
The utility model is the muddy water storehouse pressure oscillation of the existing muddy water circulatory system of solution greatly and can not located compared with ratchelManage and easily the muddy water circulatory system of shield is impacted and is easily caused the problem of earth's surface seriously settles, and disclose a kind of gasCushion bimodulus slurry shield.
What the technical solution of the utility model was realized in：
To achieve the above object, technical scheme is used by the utility model：A kind of air-cushion type bimodulus slurry shield, bagInclude into slurry house steward, plasma discharge house steward, bypass pipe, enter stock pump and pump of banking, enter to starch to be connected with the first pulp-inlet pipe and second on house steward and enter slurryTo manage, the first discharge pipe and the second discharge pipe are connected with plasma discharge house steward, the first pulp-inlet pipe, the first discharge pipe are connected to muddy water storehouse, theTwo pulp-inlet pipes, the second discharge pipe are connected to air cushion storehouse, the first pulp-inlet pipe, the second pulp-inlet pipe, the first discharge pipe and the second discharge pipeBe equipped with control valve on bypass pipe, front shield and cutter drive device forms the ring-shaped cavity in air cushion storehouse, and air cushion storehouse is divided into bottomMuddy water chamber and top pressure-air chamber, be provided with air cushion communicating pipe in air cushion storehouse, the upper port of air cushion communicating pipe is extend intoPressure-air chamber, the lower port of air cushion communicating pipe extend into muddy water chamber, and the upper port of air cushion communicating pipe, which is connected with, leads to muddy water storehouseDrainage tube, hydraulic valve, hydraulic valve and the control device phase outside shield are provided between air cushion communicating pipe and drainage tubeEven.The air cushion communicating pipe for leading to muddy water storehouse is set in air cushion storehouse, no matter arranged using muddy water storehouse plasma discharge boring mode or air cushion storehouseBoring mode is starched, can be provided for chapelet face and be accurately controlled pressure, generation pressure oscillation in chapelet face is avoided, solvesThe problem of being impacted to the muddy water circulatory system of shield, while it also avoid the sedimentation of earth's surface.
Further, anti-block apparatus is provided with the drainage tube, anti-block apparatus includes the spiral being interspersed in drainage tubeShape flow deflector, helical form flow deflector are connected with hydraulic motor.Anti-block apparatus is set in drainage tube, air cushion company can be effectively facilitatedSiphunculus it is unobstructed, avoid air cushion connection pipe choking and cause the paralysis of muddy water circulatory system, be effectively guaranteed this practicality newlyThe functional reliability of type shield.
Further, the bottom in the air cushion storehouse is provided with disintegrating machine, and the exit of disintegrating machine is provided with grid, grid positionBefore the plasma discharge port of the second discharge pipe.Although using plasma discharge boring mode in air cushion storehouse when being not likely to produce massive deposit,But still suffer from many stones and be trapped in air cushion storehouse, therefore set disintegrating machine effectively to crush the stone in air cushion storehouse in air cushion storehouseBlock, it is further ensured that the normal operation of muddy water circulatory system；And run into using muddy water storehouse plasma discharge boring mode compared with ratchelWhen, changeable is air cushion storehouse plasma discharge boring mode, using disintegrating machine to carrying out break process compared with ratchel.
A kind of air-cushion type bimodulus slurry shield of the utility model can effectively realize the muddy water circulation of shield, have muddy water storehousePlasma discharge boring mode and air cushion storehouse plasma discharge boring mode, the air cushion communicating pipe for leading to muddy water storehouse is set in air cushion storehouse, makes two kindsThe pressure in chapelet face can be accurately controlled under pattern, generation pressure oscillation in chapelet face is avoided, solves the mud to shieldThe problem of water circulation system impacts, while the sedimentation of earth's surface is it also avoid, furthermore it is also possible to the disintegrating machine using air cushion storehouseThe relatively ratchel that processing muddy water storehouse plasma discharge boring mode is not handled, ensure the reliability service of shield muddy water circulatory system.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment, letter will be made to the required accompanying drawing used in embodiment belowSingly introduce, it should be apparent that, drawings in the following description are only some embodiments of the utility model, general for this areaFor logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of air-cushion type bimodulus slurry shield；
Fig. 2 is a kind of muddy water storehouse plasma discharge boring mode view of air-cushion type bimodulus slurry shield；
Fig. 3 is a kind of air cushion storehouse plasma discharge boring mode view of air-cushion type bimodulus slurry shield.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried outClearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than wholeEmbodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is paidThe every other embodiment obtained, belong to the scope of the utility model protection.
As shown in Figure 1, Figure 2 and Figure 3, a kind of air-cushion type bimodulus slurry shield described in the utility model, this equipment is mostFront end is cutterhead 1, and the rear of cutterhead 1 is muddy water storehouse 2, and the rear of muddy water storehouse 2 is air cushion storehouse 3, the bottom between air cushion storehouse 3 and muddy water storehouse 2Portion is provided with can be with the mud door 17 of folding, and the bottom in air cushion storehouse 3 is muddy water chamber 29, top is pressure-air chamber 30, air cushion storehouse 3Air cushion communicating pipe 4 is inside provided with, the upper port of air cushion communicating pipe 4 extend into pressure-air chamber 30, the lower port of air cushion communicating pipe 4It extend into muddy water chamber 29；The upper port of air cushion communicating pipe 4 is connected with the drainage tube 32 for leading to muddy water storehouse 29, air cushion communicating pipe 4 withHydraulic valve 6 is provided between drainage tube 32, hydraulic valve 6 is connected with the control device outside shield.
Anti-block apparatus 5 is provided with the drainage tube 32, the helical form that anti-block apparatus 5 includes being interspersed in drainage tube 32 is ledFlow 33, helical form flow deflector 33 are connected with hydraulic motor 34.Anti-block apparatus 5 is set in drainage tube 32, can be effectively facilitatedAir cushion communicating pipe 4 it is unobstructed, avoid air cushion communicating pipe 4 from blocking and cause the paralysis of muddy water circulatory system, be effectively guaranteedThe functional reliability of the utility model shield.
The muddy water circulation system of the utility model shield includes into slurry house steward 11, plasma discharge house steward 27 and connected into slurry house steward 11With the bypass pipe 13 of plasma discharge house steward 27, enter to starch house steward 11 and divide to enter for the first pulp-inlet pipe 7 and the second pulp-inlet pipe 8, the first pulp-inlet pipe 7Slurry mouth is connected with muddy water storehouse 2, and the stock inlet of the first pulp-inlet pipe 7 is arranged on the upper position in muddy water storehouse 2；Second pulp-inlet pipe 8Stock inlet be connected with air cushion storehouse 3, and the stock inlet of the second pulp-inlet pipe 8 is arranged on the upper position in air cushion storehouse 3；Plasma discharge house steward27 points are the first discharge pipe 21 and the second discharge pipe 22, and the grout outlet of the first discharge pipe 21 is connected with muddy water storehouse 2, and first rowThe grout outlet of slurry pipe 21 is arranged on the lower position in muddy water storehouse 2；The grout outlet of second discharge pipe 8 is connected with air cushion storehouse 3, and theThe grout outlet of two discharge pipes 22 is arranged on the lower position in air cushion storehouse.
Enter to starch and be provided with house steward 11 into slurry main valve 12, the first slurry-inlet valve 9 is provided with the first pulp-inlet pipe 7, second enters slurryThe second slurry-inlet valve 10 is provided with pipe 8, the first pulp-expelling valve 24 is provided with the first discharge pipe 21, is provided with the second discharge pipe 22Second pulp-expelling valve 25, by-passing valve 14 is equipped with bypass pipe；Enter to starch and be provided with house steward into stock pump 15, enter stock pump 15 be arranged on intoThe rear of main valve 12 is starched, pump 28 of banking is provided with plasma discharge house steward 27.
Further, the bottom in the air cushion storehouse 3 is provided with disintegrating machine 19, and the exit of disintegrating machine 19 is provided with grid20, before grid 20 is located at the plasma discharge port of the second discharge pipe 22.
A kind of course of work of air-cushion type bimodulus slurry shield of the utility model is：
When being tunneled on the stratum to being not likely to produce massive deposit, using air cushion storehouse plasma discharge boring mode, open second and enterValve and the second pulp-expelling valve are starched, opens mud door, disintegrating machine, hydraulic valve and hydraulic motor, the first pulp-expelling valve is closed, opens into slurryPump and slurry pump, the first slurry-inlet valve is closed when the slurry flow that shield muddy water circulation system needs is smaller, when shield muddy water ringThe slurry flow that streaming system needs opens the first slurry-inlet valve when larger.
Under air cushion storehouse plasma discharge boring mode, enter stock pump and slurries are entered into slurry from entering to starch total tube pump to the first pulp-inlet pipe and secondPipe, muddy water storehouse and air cushion storehouse are respectively enterd with rear slurry, and the slurries for being delivered to muddy water storehouse are reached under air cushion storehouse by mud doorPortion, the slurries for being delivered to air cushion storehouse are directly delivered to the bottom in air cushion storehouse from the top in air cushion storehouse, reach the slurry of air cushion storehouse bottomLiquid exports after disintegrating machine and grid processing from the second discharge pipe；While said process is carried out, air cushion storehouse passes through mudDoor and air cushion communicating pipe provide Stress control from the upper and lower part in muddy water storehouse for muddy water storehouse respectively, provided accurately for chapelet faceStress control, further reduce pressure oscillation, make the utility model device more reliable and more stable.
When to being also easy to produce massive deposit stratum driving, using muddy water storehouse plasma discharge boring mode, the second pulp-expelling valve is closedAnd mud door, open the first pulp-expelling valve, the first slurry-inlet valve, the second slurry-inlet valve and hydraulic valve, open hydraulic motor, enter stock pump andSlurry pump.
Under muddy water storehouse plasma discharge boring mode, enter stock pump and slurries are entered into slurry from entering to starch total tube pump to the first pulp-inlet pipe and secondPipe, respectively enters muddy water storehouse and air cushion storehouse, the slurries for being delivered to air cushion storehouse are directly delivered to from the top in air cushion storehouse with rear slurryThe bottom in air cushion storehouse, the slurries of air cushion storehouse bottom pass through the top for being delivered to muddy water storehouse air cushion communicating pipe, the slurries in muddy water storehouseDirectly exported from the first discharge pipe；During this, air cushion storehouse can provide accurate pressure control by air cushion communicating pipe for chapelet faceSystem, pressure oscillation is eliminated, makes the utility model device stable and reliable in work.
When major diameter stone occur using muddy water storehouse plasma discharge boring mode and can not handle, air cushion storehouse driving mould can be exchanged intoFormula carries out break process to stone, so it is broken after rubble can discharge from the second discharge pipe, be then reconverted into muddy water storehouse and arrangeStarch boring mode.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility modelWithin the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included inProtection domain within.