技术领域Technical field
本发明涉及地下连续墙施工技术领域，尤其是涉及一种地下连续墙施工系统方法。The invention relates to the technical field of underground diaphragm wall construction, and in particular to an underground diaphragm wall construction system method.
背景技术Background technique
地下墙的施工一般是利用各种挖槽机械，借助于泥浆的护壁作用，在地下挖出窄而深的沟槽，并在沟槽内浇筑适当的材料形成具有防水、挡土和承重功能的连续地下墙体。然而当前对于地下墙的施工存在如下问题：The construction of underground walls generally uses various trenching machines to dig out narrow and deep trenches underground with the help of the wall protection function of mud, and pour appropriate materials in the trenches to form waterproof, soil-retaining and load-bearing functions. Continuous underground wall. However, there are currently the following problems with the construction of underground walls:
(1)无法实行沟槽的挖掘与清淤同步进行，施工效率低；(1) It is impossible to carry out trench excavation and dredging simultaneously, and the construction efficiency is low;
(2)浇筑混凝土的过程中槽沟段接头模板密封不严、存在漏浆、跑浆的现象；(2) During the process of pouring concrete, the joint formwork of the groove section was not tightly sealed, and there was grout leakage and grout running;
(3)浇筑混凝土后的地下墙接头处存在接头不牢固的问题，影响整个连续墙的整体性；(3) There is a problem of weak joints at the underground wall joints after concrete is poured, which affects the integrity of the entire diaphragm wall;
(4)切土板在挖掘过程中，受地形环境影响，切土板上粘附有较厚的渣土时，若不及时清理，切土板开挖侧携带渣土开挖，将影响切土板的挖掘效率。(4) During the excavation process of the cutting board, due to the influence of the terrain environment, when thick dirt adheres to the cutting board, if it is not cleaned in time, the excavation side of the cutting board will carry the dirt, which will affect the cutting. Excavation efficiency of soil slabs.
发明内容Contents of the invention
针对现有技术存在的不足，本发明的目的是提供一种地下连续墙施工系统及方法，实行挖掘与清淤同步进行；并且浇筑混凝土的过程中槽沟段使用混凝土隔断，避免了接头存在漏浆、跑浆的现象；波纹形的尼龙袋保证地下墙接头处牢固、稳定。In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an underground diaphragm wall construction system and method, which implements excavation and dredging simultaneously; and during the process of pouring concrete, concrete partitions are used in the trench sections to avoid leakage in the joints. The phenomenon of slurry and slurry running; the corrugated nylon bag ensures that the underground wall joints are firm and stable.
为了实现上述目的，本发明是通过如下的技术方案来实现：In order to achieve the above objects, the present invention is achieved through the following technical solutions:
第一方面，一种地下连续墙施工系统，包括：The first aspect is an underground diaphragm wall construction system, including:
挖掘机构，包括钢构架，其两端设有通过链条配合的主动齿轮和从动齿轮，链条上设有若干切土板，钢构架顶部连接钢管，钢管底端延伸到从动齿轮外侧，顶端连接泥浆泵，泥浆泵位于泥浆池，泥浆池连通沉淀池，沉淀池连通槽沟以实现挖掘与清淤同步；The excavation mechanism includes a steel frame with a driving gear and a driven gear matched by a chain at both ends. The chain is provided with a number of earth-cutting plates. The top of the steel frame is connected to a steel pipe. The bottom end of the steel pipe extends to the outside of the driven gear, and the top is connected Mud pump, the mud pump is located in the mud tank, the mud tank is connected to the sedimentation tank, and the sedimentation tank is connected to the trench to achieve synchronization of excavation and desilting;
H型钢，其一侧与尼龙袋可拆卸连接，用于分段插入沟槽底，所述尼龙袋外形为波纹形，填充后的尼龙袋配合H型钢形成混凝土隔断以消除漏浆、跑浆现象。H-shaped steel, one side of which is detachably connected to a nylon bag, is used to insert into the bottom of the trench in sections. The shape of the nylon bag is corrugated. The filled nylon bag cooperates with the H-shaped steel to form a concrete partition to eliminate the phenomenon of slurry leakage and slurry running. .
作为进一步的实现方式，所述从动齿轮包括第一从动齿轮和第二从动齿轮，从动齿轮设于钢构架底端且第二从动齿轮位于第一从动齿轮正上方。As a further implementation, the driven gear includes a first driven gear and a second driven gear. The driven gear is provided at the bottom end of the steel frame and the second driven gear is located directly above the first driven gear.
作为进一步的实现方式，所述切土板设于链条的底部，所述链条底部两侧通过转轴转动连接剪刀，剪刀设于切土板的切土侧，剪刀顶端的刀柄延伸到链条顶部设定距离；转轴处设有复位组件。As a further implementation method, the soil cutting board is provided at the bottom of the chain. Both sides of the bottom of the chain are connected to the scissors through a rotating shaft. The scissors are provided on the soil cutting side of the soil cutting board. The handles at the top of the scissors extend to the top of the chain. Fixed distance; there is a reset component at the rotating shaft.
作为进一步的实现方式，所述钢构架底部靠近主动齿轮一端的两侧设有楔子，楔子外侧面为斜面且与所述刀柄对应设置，斜面与刀柄配合以推动剪刀在切土板切土面上转动，剪掉渣土。As a further implementation method, wedges are provided on both sides of the bottom of the steel frame near one end of the driving gear. The outer side of the wedge is a bevel and is provided corresponding to the handle. The bevel cooperates with the handle to push the scissors to cut the soil on the cutting board. Turn on the surface and cut off the residue.
作为进一步的实现方式，所述切土板的长度大于两组剪刀的间距，剪刀的底端平齐或高于切土板底端。As a further implementation, the length of the soil cutting board is greater than the distance between the two sets of scissors, and the bottom ends of the scissors are flush with or higher than the bottom end of the soil cutting board.
作为进一步的实现方式，所述尼龙袋的宽度大于沟槽的宽度，所述H型钢的高于大于沟槽的高度。As a further implementation, the width of the nylon bag is greater than the width of the groove, and the height of the H-shaped steel is greater than the height of the groove.
第二方面，一种地下连续墙施工方法，采用如上任一所述的地下连续墙施工系统，包括如下步骤：In the second aspect, an underground diaphragm wall construction method adopts the underground diaphragm wall construction system as described in any of the above, including the following steps:
槽沟开挖，链条在主动齿轮带动下逆时针转动，切土板不断经过从动齿轮处并挖掘渣土，切土板带动渣土经过楔子处，楔子推动剪刀转动将切土板上的渣土剪掉，之后剪刀通过复位组件复位；挖掘时泥浆泵持续将泥浆抽出，泥浆大颗粒经沉淀池沉淀后重新回到槽沟以进行清淤；During trench excavation, the chain rotates counterclockwise driven by the driving gear. The cutting board continuously passes the driven gear and excavates the slag. The cutting board drives the slag past the wedge. The wedge pushes the scissors to rotate and remove the slag on the cutting board. The soil is cut off, and then the scissors are reset through the reset assembly; during excavation, the mud pump continues to pump out the mud, and the large mud particles settle in the sedimentation tank and return to the trench for desilting;
将槽沟按照长度分为多个槽沟段，对每个槽沟段施工H型钢和尼龙袋形成隔断，先向尼龙袋内注入泥浆以使得尼龙袋充满后密封，之后向尼龙袋内浇筑混凝土，形成混凝土隔断；之后对混凝土隔断围成的槽沟段进行混凝土浇筑，最后提出H型钢；依次完成多个槽沟段浇筑，形成地下连续墙。Divide the trench into multiple trench sections according to length, construct H-shaped steel and nylon bags to form partitions for each trench section, first inject mud into the nylon bag to make the nylon bag full and then seal it, and then pour concrete into the nylon bag , to form a concrete partition; then concrete is poured into the trench section surrounded by the concrete partition, and finally the H-shaped steel is raised; multiple trench sections are poured in sequence to form an underground continuous wall.
作为进一步的实现方式，所述槽沟开挖前需沿地下墙的纵轴线开挖导沟，在导沟的两侧建造钢筋混凝土导墙，导墙内侧每隔2米设置一道木支撑。As a further implementation method, before excavation of the trench, it is necessary to excavate a guide trench along the longitudinal axis of the underground wall, build reinforced concrete guide walls on both sides of the guide trench, and set up wooden supports every 2 meters on the inside of the guide wall.
作为进一步的实现方式，所述槽沟开挖过程中，需不间断的向槽沟内注入泥浆，保持槽沟内处于满浆状态。As a further implementation method, during the trench excavation process, mud needs to be continuously injected into the trench to keep the trench in a full slurry state.
作为进一步的实现方式，所述尼龙袋顶部与H型钢顶部挂靠连接，H型钢提出过程中，尼龙袋与H型钢脱开，尼龙袋留在混凝土中。As a further implementation method, the top of the nylon bag is connected to the top of the H-shaped steel. During the process of lifting the H-shaped steel, the nylon bag is separated from the H-shaped steel, and the nylon bag remains in the concrete.
上述本发明的有益效果如下：The above-mentioned beneficial effects of the present invention are as follows:
1、本发明钢构架顶部连接钢管，钢管底端延伸到从动齿轮外侧，顶端连接泥浆泵，泥浆泵位于泥浆池，泥浆池连通沉淀池，沉淀池连通槽沟以实现挖掘与清淤同步进行；大颗粒的泥浆可通过沉淀池沉积，小颗粒的泥浆可以重新回到槽沟中发挥支撑作用。1. The top of the steel frame of the present invention is connected to a steel pipe. The bottom end of the steel pipe extends to the outside of the driven gear. The top end is connected to a mud pump. The mud pump is located in the mud tank. The mud tank is connected to the sedimentation tank. The sedimentation tank is connected to the trench to realize simultaneous excavation and dredging. ; Large particles of mud can be deposited through the sedimentation tank, and small particles of mud can return to the trench to play a supporting role.
2、本发明采用填充后的尼龙袋配合H钢形成混凝土隔断以消除漏浆、跑浆现象；尼龙袋外形为波纹形，填充后的尼龙袋发挥混凝土隔断的密封作用，并且波纹形结构使得尼龙袋与后续混凝土墙接头处接触面积增大，保证接头处牢固、稳定。2. The present invention uses filled nylon bags and H steel to form concrete partitions to eliminate the phenomenon of slurry leakage and slurry running; the shape of the nylon bags is corrugated, and the filled nylon bags play the sealing role of concrete partitions, and the corrugated structure makes the nylon The contact area between the bag and the subsequent concrete wall joint is increased to ensure that the joint is strong and stable.
3、本发明楔子、剪刀、刀柄的设置，使得刀柄在经过楔子处时，楔子可推动刀柄转动，进而使得剪刀将切土板上渣土剪掉，切土板上始终不会粘附渣土，提高切土板的挖掘效率。3. The wedge, scissors, and knife handle of the present invention are arranged so that when the knife handle passes through the wedge, the wedge can push the knife handle to rotate, thereby allowing the scissors to cut off the dirt on the soil cutting board, and the soil cutting board will never stick to it. Attached to the muck, it improves the excavation efficiency of the cutting board.
4、本发明的剪刀位于切土板的开挖侧，并且切土板的长度大于剪刀间距，剪刀底端高于切土板底板，保证切土板对剪刀的保护作用，防止剪刀受损。4. The scissors of the present invention are located on the excavation side of the cutting board, and the length of the cutting board is greater than the distance between the scissors. The bottom end of the scissors is higher than the bottom of the cutting board, ensuring the protective effect of the cutting board on the scissors and preventing damage to the scissors.
附图说明Description of drawings
构成本发明的一部分的说明书附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。The description and drawings that constitute a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
图1是本发明实施例中挖掘机构的整体结构示意图；Figure 1 is a schematic diagram of the overall structure of the excavating mechanism in the embodiment of the present invention;
图2是本发明实施例中链条的截面示意图；Figure 2 is a schematic cross-sectional view of a chain in an embodiment of the present invention;
图3是本发明实施例中位于楔子处的链条的截面示意图；Figure 3 is a schematic cross-sectional view of the chain located at the wedge in the embodiment of the present invention;
图4是本发明实施例中楔子的结构示意图；Figure 4 is a schematic structural diagram of a wedge in an embodiment of the present invention;
图5是本发明实施例中混凝土浇筑及混凝土隔断的施工原理示意图。Figure 5 is a schematic diagram of the construction principles of concrete pouring and concrete partitioning in the embodiment of the present invention.
图中：为显示各部位位置而夸大了互相间间距或尺寸，示意图仅作示意。In the figure: The spacing or size between each part is exaggerated to show the position of each part, and the schematic diagram is for illustration only.
其中：1、钢丝管，2、钢管，3、地平面，4、槽沟，16、槽沟底；5、主动齿轮，12、第一从动齿轮，15、第二从动齿轮，6、链条，14、钢构架；Among them: 1. Steel wire pipe, 2. Steel pipe, 3. Ground level, 4. Groove, 16. Groove bottom; 5. Driving gear, 12. First driven gear, 15. Second driven gear, 6. Chain, 14, steel frame;
7、楔子，21、楔子，10、切土板；7. Wedge, 21. Wedge, 10. Cutting soil board;
8、第一转轴，9、第一销套，11、第一刀柄，13、第一剪刀，8. The first rotating shaft, 9. The first pin sleeve, 11. The first knife handle, 13. The first scissors,
18、第二转轴，19、第二销套，17、第二刀柄，20、第二剪刀，18. The second rotating shaft, 19. The second pin sleeve, 17. The second knife handle, 20. The second scissors,
22、H型钢，23、尼龙袋，24、已浇混凝土，25、导管，26、混凝土斗,27、方钢。22. H-shaped steel, 23. Nylon bag, 24. Poured concrete, 25. Conduit, 26. Concrete bucket, 27. Square steel.
具体实施方式Detailed ways
应该指出，以下详细说明都是例示性的，旨在对本发明提供进一步的说明。除非另有指明，本发明使用的所有技术和科学术语具有与本发明所属技术领域的普通技术人员通常理解的相同含义。It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings commonly understood by one of ordinary skill in the art to which this invention belongs.
实施例一Embodiment 1
本发明的一种典型的实施方式中，参考图1所示，一种地下连续墙施工系统，包括用于挖掘渣土的挖掘机构，用于浇筑混凝土时的尼龙袋23和H型钢22，挖掘机构通过链条6带动切土板10挖掘渣土，设备上还设有钢管2，用于挖掘的同时，通过泥浆泵将泥浆抽出，实现清淤与挖掘同步进行。In a typical implementation of the present invention, as shown in Figure 1, an underground diaphragm wall construction system includes an excavation mechanism for excavating muck, a nylon bag 23 and an H-shaped steel 22 for pouring concrete. The mechanism drives the cutting board 10 to excavate the muck through the chain 6. The equipment is also equipped with a steel pipe 2, which is used for excavation and at the same time pumping out the mud through a mud pump to achieve simultaneous dredging and excavation.
如图1所示，挖掘机构包括钢构架14，钢构架14在挖掘时需要倾斜设置，以通过底端向下挖掘。As shown in Figure 1, the excavation mechanism includes a steel frame 14. The steel frame 14 needs to be tilted during excavation to excavate downward through the bottom end.
钢构架14两端支撑有通过链条配合的主动齿轮5和从动齿轮，其中从动齿轮包括第一从动齿轮12和第二从动齿轮15，从动齿轮设于钢构架底端且第二从动齿轮15位于第一从动齿轮12正上方。如图1所示，本实施例的钢构架底端指代图1中的钢构架左下端，顶端指代图1中的钢构架的右上端。主动齿轮为位于钢构架14顶端。钢构架14为钢材制成的长条形支撑框架，钢构架14的长度根据挖掘深度选择。Both ends of the steel frame 14 support a driving gear 5 and a driven gear that are matched by a chain. The driven gears include a first driven gear 12 and a second driven gear 15. The driven gear is located at the bottom of the steel frame and the second driven gear. The driven gear 15 is located directly above the first driven gear 12 . As shown in Figure 1, the bottom end of the steel frame in this embodiment refers to the lower left end of the steel frame in Figure 1, and the top end refers to the upper right end of the steel frame in Figure 1. The driving gear is located at the top of the steel frame 14. The steel frame 14 is a long support frame made of steel, and the length of the steel frame 14 is selected according to the excavation depth.
钢构架14的主动齿轮处设置一台行星减速机，行星减速机驱动主动齿轮5运转，行星减速机由一台液压马达轴联驱动，主动齿轮5通过链条6带动从动齿轮运转。A planetary reducer is provided at the driving gear of the steel frame 14. The planetary reducer drives the driving gear 5 to operate. The planetary reducer is driven by a hydraulic motor shaft coupling. The driving gear 5 drives the driven gear to operate through the chain 6.
如图1所示，链条上均匀设有若干切土板，切土板设于链条的底部，当切土板从第一从动齿轮12到达主动齿轮5后，完成挖掘，之后切土板经过主动齿轮5，位于第二从动齿轮15与主动齿轮5之间的链条6上，此时切土板位于链条上方，不参与挖掘。由于第一从动齿轮12位于第二从动齿轮15正下方，此时二者之间的链条6处于竖直状态，可以保证挖掘的沟槽侧壁为竖直状态。As shown in Figure 1, a number of cutting boards are evenly provided on the chain, and the cutting boards are located at the bottom of the chain. When the cutting boards reach the driving gear 5 from the first driven gear 12, the excavation is completed, and then the cutting boards pass through The driving gear 5 is located on the chain 6 between the second driven gear 15 and the driving gear 5. At this time, the cutting board is located above the chain and does not participate in excavation. Since the first driven gear 12 is located directly below the second driven gear 15, the chain 6 between the two is in a vertical state at this time, which can ensure that the side wall of the excavated trench is in a vertical state.
如图2所示，切土板10为长方形的高强度锰钢板，切土板靠近链条的一条边固定于链条底面，远离链条的另一条边弯曲一定角度且设置锯齿状的刃口。As shown in Figure 2, the cutting board 10 is a rectangular high-strength manganese steel plate. One side of the cutting board close to the chain is fixed on the bottom surface of the chain, and the other side away from the chain is bent at a certain angle and provided with a jagged edge.
如图1所示，钢构架14顶部连接钢管，钢管的上部通过联板固定于钢构架的上部位置，钢管的下部通过联板固定于钢构架的下部位置，联板在图中未示出。As shown in Figure 1, the top of the steel frame 14 is connected to a steel pipe. The upper part of the steel pipe is fixed to the upper position of the steel frame through a connecting plate. The lower part of the steel pipe is fixed to the lower position of the steel frame through a connecting plate. The connecting plate is not shown in the figure.
钢管2底端延伸到从动齿轮外侧，钢管2顶端通过钢丝管1连接泥浆泵，泥浆泵置于泥浆池内，泥浆池连通于沉淀池，沉淀池连通于槽沟。The bottom end of the steel pipe 2 extends to the outside of the driven gear, and the top end of the steel pipe 2 is connected to the mud pump through the steel wire pipe 1. The mud pump is placed in the mud tank, the mud tank is connected to the sedimentation tank, and the sedimentation tank is connected to the trench.
钢管2底端与第一从动齿轮12高度对应设置，以便于在切土板10挖掘的过程中，通过泥浆泵实时的将泥浆抽出，泥浆首先被抽进泥浆池中，大颗粒泥浆留在过滤池中，小颗粒的泥浆重新经过沉淀池回到沟槽内，起到对开挖沟槽的支撑作用。通过此循环，实现了开挖与清淤的同时进行。大颗粒淤泥被除掉，以防止影响后续的混凝土浇筑。The bottom end of the steel pipe 2 is set in a height corresponding to the first driven gear 12, so that during the excavation process of the cutting board 10, the mud can be pumped out in real time through the mud pump. The mud is first pumped into the mud pool, and the large particles of mud remain in the mud pool. In the filter tank, the small particles of mud return to the trench through the sedimentation tank to support the excavation of the trench. Through this cycle, excavation and dredging can be carried out simultaneously. Large particles of silt are removed to prevent subsequent concrete pouring.
如图1-图4所示，链条底部两侧设有第一销套9和第二销套19，第一销套9和第二销套19为套筒结构。第一剪刀13中间位置设有第一转轴8，第二剪刀20中间位置设有第二转轴18，第一剪刀13通过第一转轴8与第一销套9转动配合，第二剪刀20通过第二转轴18与第二销套19转动配合。转轴与销套之间设有复位组件，复位组件板簧结构。As shown in Figures 1 to 4, a first pin bushing 9 and a second pin bushing 19 are provided on both sides of the bottom of the chain. The first pin bushing 9 and the second pin bushing 19 are sleeve structures. The first scissors 13 are provided with a first rotating shaft 8 at the middle position, and the second scissors 20 are provided with a second rotating shaft 18 at the middle position. The first scissors 13 rotate with the first pin sleeve 9 through the first rotating shaft 8, and the second scissors 20 rotate through the first rotating shaft 8. The second rotating shaft 18 rotates with the second pin sleeve 19 . There is a reset component between the rotating shaft and the pin sleeve, and the reset component has a leaf spring structure.
第一剪刀13和第二剪刀20相邻的一侧设置刃口，第一剪刀13和第二剪刀20相对于销套转动，使得剪刀底部对向旋转，剪刀位于切土板10的开挖侧，以便于将粘附在切土板10上的渣土剪下来，保证切土板的开挖效率。The adjacent sides of the first scissors 13 and the second scissors 20 are provided with cutting edges. The first scissors 13 and the second scissors 20 rotate relative to the pin sleeve, causing the bottoms of the scissors to rotate oppositely. The scissors are located on the excavation side of the soil cutting board 10 , so as to cut off the muck adhered to the soil cutting board 10 to ensure the excavation efficiency of the soil cutting board.
如图1、图3和图4所示，钢构架14靠近主动齿轮5的一端两侧设有楔子7和楔子21，其中楔子7与第一剪刀13对应设置，楔子21与第二剪刀21对应设置。楔子为楔块结构，两个楔子相互远离的外侧面为斜面，如图4所示。As shown in Figures 1, 3 and 4, wedges 7 and 21 are provided on both sides of one end of the steel frame 14 close to the driving gear 5, where the wedge 7 corresponds to the first scissors 13, and the wedge 21 corresponds to the second scissors 21. set up. The wedge has a wedge structure, and the outer surfaces of the two wedges away from each other are inclined planes, as shown in Figure 4.
如图3所示，第一剪刀13和第二剪刀20顶部为第一刀柄11和第二刀柄17，刀柄延伸到链条上方，楔子外侧面为斜面且与刀柄对应设置，当剪刀在链条的带动下经过楔子处时，斜面与刀柄配合以推动剪刀在切土板10的切土面上转动，从而剪掉渣土，保证切土板10上不会粘附渣土。经过楔子之后的剪刀在复位组件的回弹力作用下，重新复位。As shown in Figure 3, the tops of the first scissors 13 and the second scissors 20 are first handles 11 and second handles 17. The handles extend above the chain. The outer side of the wedge is a bevel and is arranged corresponding to the handle. When the scissors When the chain passes through the wedge, the inclined surface cooperates with the handle to push the scissors to rotate on the cutting surface of the soil cutting board 10, thereby cutting off the muck, ensuring that the soil cutting board 10 will not adhere to the muck. The scissors after passing through the wedge are reset again under the action of the rebound force of the reset component.
如图3所示，切土板10的长度大于两组剪刀的间距，并且剪刀的底端高于切土板底端，以使得切土板10对剪刀具有保护作用，防止剪刀在挖掘过程中受损。当切土板为平板结构时，剪刀底端可以与切土板10底端平齐。As shown in Figure 3, the length of the cutting board 10 is greater than the distance between the two sets of scissors, and the bottom end of the scissors is higher than the bottom end of the cutting board, so that the cutting board 10 has a protective effect on the scissors and prevents the scissors from being used during excavation. damaged. When the soil cutting board has a flat structure, the bottom end of the scissors can be flush with the bottom end of the soil cutting board 10 .
本实施例的挖掘机构可以实现在挖掘的同时通过钢管和泥浆泵进行清淤，同时楔子和剪刀的设置，保证切土板10上始终不会粘附渣土，提高切土板的挖掘效果。The excavation mechanism of this embodiment can realize dredging through steel pipes and mud pumps during excavation. At the same time, the setting of wedges and scissors ensures that slag will never adhere to the soil cutting board 10 and improves the excavation effect of the soil cutting board.
如图5所示，为沟槽挖掘完成后的注浆过程。As shown in Figure 5, it is the grouting process after trench excavation is completed.
地下连续墙建造时所开挖的槽沟为连续槽沟，浇筑混凝土前需将连续槽沟划分为多个槽沟段，并利用H型钢和尼龙袋形成设置隔断，从而形成浇筑仓。The trenches excavated during the construction of the underground diaphragm wall are continuous trenches. Before pouring concrete, the continuous trenches need to be divided into multiple trench sections, and H-shaped steel and nylon bags are used to form partitions to form a pouring bin.
如图5所示，H型钢22和尼龙袋23可拆卸连接，H型钢22用于分段插入沟槽底，尼龙袋外形为波纹形，注浆时，填充后的尼龙袋配合H型钢形成混凝土隔断以消除漏浆、跑浆现象。As shown in Figure 5, the H-shaped steel 22 and the nylon bag 23 are detachably connected. The H-shaped steel 22 is used to insert into the trench bottom in sections. The shape of the nylon bag is corrugated. During grouting, the filled nylon bag cooperates with the H-shaped steel to form concrete. Partition to eliminate slurry leakage and slurry running.
由于尼龙袋23外形为波纹形，使得后续浇筑混凝土时，增大了与混凝土的接触面积，相对于现有技术中直线形式的接头结构，尼龙袋23外形为波纹形，浇筑混凝土后的地下连续墙接头处牢固、稳定。尼龙袋23的高度与槽沟4的深度相同，尼龙袋为尼龙丝制成的袋子，尼龙袋中的水可从尼龙袋中渗出，尼龙袋中的细骨料(水泥、细沙)不能从尼龙袋中渗出。Since the nylon bag 23 has a corrugated shape, the contact area with the concrete is increased when the concrete is poured later. Compared with the linear joint structure in the prior art, the nylon bag 23 has a corrugated shape, and the underground surface after the concrete is poured is continuous. The wall joints are strong and stable. The height of the nylon bag 23 is the same as the depth of the groove 4. The nylon bag is a bag made of nylon filaments. The water in the nylon bag can seep out of the nylon bag, but the fine aggregate (cement, fine sand) in the nylon bag cannot. Oozing from the nylon bag.
H型钢22的高度大于槽沟4的高度，H型钢22的底端插入槽沟底16，顶端通过方钢27固定在地平面处3，尼龙袋挂靠在H型钢一侧。在浇筑时，先向尼龙袋23内浇筑泥浆，使得尼龙袋23填充完成，与H型钢一同发挥密封作用，防止后续对浇筑仓注浆时出现漏浆、跑浆现象。The height of the H-shaped steel 22 is greater than the height of the groove 4. The bottom end of the H-shaped steel 22 is inserted into the groove bottom 16, and the top end is fixed at the ground level 3 through the square steel 27. The nylon bag is hung on one side of the H-shaped steel. During pouring, mud is poured into the nylon bag 23 first, so that the filling of the nylon bag 23 is completed, and together with the H-shaped steel, it plays a sealing role to prevent slurry leakage and slurry leakage during subsequent grouting of the pouring bin.
之后用水下混凝土的浇筑方法将尼龙袋内浇筑速凝混凝土，形成混凝土隔断。混凝土隔断完成后，即可对混凝土隔断围成的槽沟段进行混凝土浇筑，用水下混凝土浇筑方法将沟槽段内的混凝土浇筑完成，当隔断内的混凝土初凝一定时间后，提出H型钢，用上述同样的方法施工下一个混凝土隔断以及混凝土沟槽段，依次完成多个地下墙段的施工，形成连续地下墙。Then, quick-setting concrete is poured into the nylon bag using the underwater concrete pouring method to form a concrete partition. After the concrete partition is completed, the trench section surrounded by the concrete partition can be concreted. The concrete in the trench section can be poured using the underwater concrete pouring method. After the concrete in the partition has initially set for a certain period of time, the H-shaped steel is raised. Use the same method as above to construct the next concrete partition and concrete trench section, and complete the construction of multiple underground wall sections in sequence to form a continuous underground wall.
实施例二Embodiment 2
一种地下连续墙施工方法，采用实施例一的一种地下连续墙施工系统，包括如下步骤：An underground diaphragm wall construction method, using an underground diaphragm wall construction system of Embodiment 1, includes the following steps:
S1:导墙的建造：S1: Construction of guide wall:
槽沟开挖之前，需沿着地下墙的纵轴线开挖导沟，在导沟的两侧建造钢筋混凝土导墙。导沟两侧的导墙分别为倒L形，导墙深1.2-2米，导墙的厚度为0.15-0.25米，两侧导墙之间的距离比地下墙的宽度超出5厘米。在导墙内侧每隔2米设置一道木支撑。Before trench excavation, a guide trench needs to be excavated along the longitudinal axis of the underground wall, and reinforced concrete guide walls should be built on both sides of the guide trench. The guide walls on both sides of the guide trench are inverted L shapes. The depth of the guide wall is 1.2-2 meters. The thickness of the guide wall is 0.15-0.25 meters. The distance between the guide walls on both sides is 5 cm wider than the width of the underground wall. Set up wooden supports every 2 meters on the inside of the guide wall.
S2:泥浆制备：S2: Mud preparation:
在槽沟开挖过程中，需不间断的向槽沟内注入泥浆，保持槽沟内处于满浆状态。泥浆使用泥浆搅拌机搅拌，泥浆采用膨润土与水搅拌而成，需向泥浆中添加氢氧化钠、磺酸钙等添加剂。During the trench excavation process, mud needs to be continuously injected into the trench to keep the trench full of slurry. The mud is stirred using a mud mixer. The mud is made of bentonite and water. Additives such as sodium hydroxide and calcium sulfonate need to be added to the mud.
搅拌好的泥浆，需在蓄浆池内静置24小时。新配制的泥浆比重控制在1.04-1.05，开挖过程中槽沟内的泥浆比重控制在1.25-1.30以下。此外，挖掘机构中的钢管通过泥浆泵将挖掘过程中的大颗粒泥浆抽出，小颗粒泥浆重新通过沉淀池回到槽沟中，与制备的泥浆同时发挥支撑作用。The mixed mud needs to be left in the slurry tank for 24 hours. The specific gravity of the newly prepared mud is controlled at 1.04-1.05, and the specific gravity of the mud in the trench is controlled below 1.25-1.30 during the excavation process. In addition, the steel pipe in the excavation mechanism pumps out the large-grained mud during the excavation process through the mud pump, and the small-grained mud returns to the trench through the sedimentation tank, playing a supporting role at the same time as the prepared mud.
S3:槽沟的开挖：S3: Excavation of trenches:
挖掘机构开始工作，链条6在主动齿轮5、第一从动齿轮12、第二从动齿轮15组成的系统的周侧逆时针转动，链条6上的切土板便挖掘渣土且推动渣土到槽沟外，当一个切土板运动到楔子7和楔子21所在的位置时，第一刀柄11和第二刀柄17的上端由于受到楔子的斜面的挤压，使得刀柄便向链条所在位置的外部移动，剪刀便以转轴为轴线向切土板的中部位置摆动；如此，第一剪刀13和第二剪刀20呈剪刀状将切土板上的渣土剪掉。The excavation mechanism starts to work, and the chain 6 rotates counterclockwise around the system composed of the driving gear 5, the first driven gear 12, and the second driven gear 15. The cutting plate on the chain 6 excavates and pushes the muck. Outside the trench, when a cutting board moves to the position where the wedge 7 and the wedge 21 are located, the upper ends of the first handle 11 and the second handle 17 are squeezed by the slope of the wedge, causing the handle to move towards the chain. When the outer position of the scissors moves outward, the scissors will swing toward the middle position of the soil cutting board with the rotation axis as the axis; in this way, the first scissors 13 and the second scissors 20 will cut off the dirt on the soil cutting board in a scissor shape.
当第一刀柄11和第二刀柄17越过楔子7和楔子21时后，剪刀上的复位组件将刀柄以及剪刀回位。当第二个切土板运动到楔子所在的位置时，重复以上动作，保证切土板上始终不会粘附渣土，反复以上过程，便挖掘出槽沟。When the first knife handle 11 and the second knife handle 17 pass over the wedge 7 and the wedge 21, the reset component on the scissors returns the knife handle and the scissors. When the second cutting board moves to the position of the wedge, repeat the above action to ensure that no dirt will adhere to the cutting board. Repeat the above process to excavate the trench.
地下墙挖掘的同时，泥浆泵同时工作，泥浆池中的泥浆泵抽取泥浆池中的泥浆，泥浆通过钢丝管1、钢管2输送到槽沟4的底部，泥浆便携带槽沟底部的渣土从槽沟内流入到沉淀池，渣土在沉淀池中沉淀后泥浆流入到泥浆池，反复以上过程便将槽沟底部的大颗粒渣土清理干净。While the underground wall is being excavated, the mud pump works at the same time. The mud pump in the mud pool pumps out the mud in the mud pool. The mud is transported to the bottom of the trench 4 through the steel wire pipe 1 and the steel pipe 2. The mud carries the dregs at the bottom of the trench from The trench flows into the sedimentation tank. After the muck settles in the sedimentation tank, the mud flows into the mud tank. Repeating the above process will clean up the large particles of muck at the bottom of the trench.
S4：混凝土隔断的施工：S4: Construction of concrete partitions:
如图5所示，开挖的槽沟为连续槽沟4，浇筑混凝土前需将连续槽沟划分为多个槽沟段，每个槽沟段的长度为4-8米。As shown in Figure 5, the excavated trench is a continuous trench 4. Before pouring concrete, the continuous trench needs to be divided into multiple trench segments, and the length of each trench segment is 4-8 meters.
在槽沟段的两端设置隔断，形成一个浇筑仓。如图5中，左侧为已浇混凝土24，右侧为H型钢22和尼龙袋23，中间形成一个浇筑仓。Set partitions at both ends of the trench section to form a pouring bin. As shown in Figure 5, the left side is the poured concrete 24, the right side is the H-shaped steel 22 and the nylon bag 23, and a pouring bin is formed in the middle.
隔断包括H型钢22和挂靠在H型钢22上的尼龙袋23以及尼龙袋内的混凝土。The partition includes H-shaped steel 22, a nylon bag 23 hung on the H-shaped steel 22, and concrete in the nylon bag.
H型钢22的长度比所述槽沟的深度长2-3米。H型钢22的宽度与槽沟4的宽度相同。尼龙袋的高度与槽沟的深度相同。尼龙袋23为尼龙丝制成的袋子，尼龙袋中的水可从尼龙袋中渗出，尼龙袋中的细骨料(水泥、细沙)不能从尼龙袋中渗出。The length of the H-shaped steel 22 is 2-3 meters longer than the depth of the trench. The width of the H-shaped steel 22 is the same as the width of the groove 4 . The height of the nylon bag is the same as the depth of the groove. The nylon bag 23 is a bag made of nylon yarn. The water in the nylon bag can seep out from the nylon bag, but the fine aggregate (cement, fine sand) in the nylon bag cannot seep out from the nylon bag.
混凝土隔断的施工过程为：The construction process of concrete partitions is:
首先将导管25置入尼龙袋23中，将尼龙袋23的一边挂靠在H型钢22上，将H型钢、尼龙袋23以及导管25一起竖直置入槽沟中，将H型钢上下两端固定，H型钢的上端通过两块方钢27固定在混凝土导墙的上表面(地平面3处)，H型钢的下端插入槽沟底2-3米固定。First, place the conduit 25 into the nylon bag 23, hang one side of the nylon bag 23 on the H-shaped steel 22, vertically place the H-shaped steel, nylon bag 23 and conduit 25 into the groove, and fix the upper and lower ends of the H-shaped steel , the upper end of the H-shaped steel is fixed on the upper surface of the concrete guide wall (3 places on the ground level) through two square steel pieces 27, and the lower end of the H-shaped steel is inserted into the bottom of the trench for 2-3 meters and fixed.
然后，将泥浆泵的出水口通过管道连接导管25的上口，对尼龙袋23内灌入泥浆，当泥浆充满尼龙袋23后，将导管25上口的管道撤出，将混凝土斗26连入导管上口，通过导管用水下混凝土的浇筑方法将尼龙袋内浇筑速凝混凝土，形成混凝土隔断。尼龙袋23充满并浇注速凝混凝土后，结合H型钢可有效发挥密封作用，保证后续浇筑仓中浇筑混凝土时不会出现漏浆和跑浆现象。Then, connect the water outlet of the mud pump to the upper opening of the conduit 25 through a pipe, and pour mud into the nylon bag 23. When the mud is filled with the nylon bag 23, withdraw the pipe at the upper end of the conduit 25 and connect the concrete bucket 26. At the upper end of the conduit, quick-setting concrete is poured into the nylon bag using the underwater concrete pouring method through the conduit to form a concrete partition. After the nylon bag 23 is filled and the quick-setting concrete is poured, it can be effectively sealed when combined with the H-shaped steel to ensure that there will be no slurry leakage or slurry running when the concrete is poured in the subsequent pouring bin.
其中，装入混凝土后尼龙袋23的宽度大于2倍槽沟4宽度。装入混凝土后尼龙袋23左右两边的外形为波纹形，增大与混凝土的接触面积，提高后续与混凝土接头处的密封性。Wherein, the width of the nylon bag 23 after the concrete is loaded is greater than 2 times the width of the groove 4. After the concrete is loaded, the left and right sides of the nylon bag 23 are corrugated, which increases the contact area with the concrete and improves the sealing of the subsequent joint with the concrete.
S5:地下墙的形成：S5: Formation of underground wall:
当隔断混凝土浇筑完成后，即可对混凝土隔断围成的槽沟段进行混凝土浇筑，用水下混凝土浇筑方法将沟槽段内的混凝土浇筑完成，当隔断内的混凝土初凝一定时间后，提出H型钢，用上述同样的方法施工下一个混凝土隔断以及混凝土沟槽段，依次完成多个地下墙段的施工，形成连续地下墙。H型钢提出过程中，尼龙袋与H型钢脱开，尼龙袋留在混凝土中。After the partition concrete pouring is completed, the trench section surrounded by the concrete partition can be concreted. The concrete in the trench section can be poured using the underwater concrete pouring method. When the concrete in the partition has initially set for a certain period of time, H Section steel, use the same method as above to construct the next concrete partition and concrete trench section, and complete the construction of multiple underground wall sections in sequence to form a continuous underground wall. During the process of lifting the H-shaped steel, the nylon bag was separated from the H-shaped steel, and the nylon bag remained in the concrete.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
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| CN202311739708.4ACN117488898A (en) | 2023-12-15 | 2023-12-15 | An underground continuous wall construction system and method |
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