Reinforcing structure for foundation pit waterproof curtain failure slope collapse and construction method thereof

Abstract

The invention discloses a reinforcing structure for foundation pit waterproof curtain failure side slope collapse and a construction method thereof, and relates to the technical field of foundation pit side slope reinforcement, the reinforcing structure comprises a plurality of anchor piles, a supporting frame, a bottom plate and a top supporting rod, the anchor piles are used for being driven into a soil layer at the bottom of a foundation pit, the supporting frame is used for being installed on the anchor piles, and the bottom plate is arranged on the supporting frame; fixing structures used for fixing the anchor piles are arranged on the supporting frame, an adjusting frame is rotationally arranged on the supporting frame, a top supporting frame is slidably arranged on the adjusting frame and used for supporting the waterproof curtain, the bottom plate is fixed to the bottom of a foundation pit, one end of a top supporting rod is hinged to the bottom plate, and a connecting sleeve is rotationally arranged on the top supporting frame and used for connecting the bottom plate with the bottom plate. The connecting sleeve is matched with the top supporting rod and used for allowing the top supporting rod to be inserted therein, and a limiting assembly used for preventing the top supporting frame from sliding is arranged on the adjusting frame. Effective reinforcement of foundation pit waterproof curtain failure slope collapse can be achieved, the construction period is shortened, and time and manpower input is reduced.

Description

Technical Field

[0001] This application relates to the technical field of foundation pit slope reinforcement, and particularly relates to a reinforcement structure for a foundation pit slope collapse caused by the failure of a water-stop curtain and its construction method. Background Art

[0002] Foundation pit support is an important link in construction engineering. As a key structure to prevent groundwater from seeping into the foundation pit, the failure of the water-stop curtain will cause serious problems such as slope collapse and groundwater gushing. In recent years, with the acceleration of urban underground space development, the number of deep foundation pit projects has increased sharply. However, due to factors such as geological conditions and construction technology, water-stop curtain failure accidents occur frequently.

[0003] At present, in the industry, for problems such as slope collapse caused by the failure of the foundation pit water-stop curtain, methods such as grouting reinforcement and steel sheet pile support are mainly used to deal with them. Grouting reinforcement is to inject special slurry into the soil around the foundation pit, and use the solidification characteristics of the slurry to enhance the strength and stability of the soil, thereby reducing the infiltration of groundwater; steel sheet pile support is to drive steel sheet piles around the foundation pit to form a continuous support wall to block the influx of groundwater and the collapse of the soil. In addition, there are some other auxiliary means, such as setting up a drainage system to lower the groundwater level and reduce the pressure of groundwater on the foundation pit.

[0004] However, although the above methods can improve the performance of the soil to a certain extent and achieve the effect of reinforcing the foundation pit slope, they generally have the defects of long construction period, large time and labor input. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, this application provides a reinforcement structure for a foundation pit slope collapse caused by the failure of a water-stop curtain and its construction method.

[0006] In the first aspect, a reinforcement structure for a foundation pit slope collapse caused by the failure of a water-stop curtain provided by this application adopts the following technical solutions: A reinforcement structure for a foundation pit slope collapse caused by the failure of a water-stop curtain includes anchor piles, a support frame, a bottom plate and a top strut. A plurality of anchor piles are provided and are used to be driven into the soil layer at the bottom of the foundation pit. The support frame is used to be installed on each of the anchor piles, and fixing structures for fixing each anchor pile are respectively provided on the support frame. An adjusting frame is rotatably provided on the support frame, and a top support frame is slidably provided on the adjusting frame for supporting the water-stop curtain. The bottom plate is fixed at the bottom of the foundation pit. One end of the top strut is hinged to the bottom plate. A connecting sleeve is rotatably provided on the top support frame, and the connecting sleeve is adapted to the top strut and is used for the top strut to be inserted into it. A limiting component for preventing the top support frame from sliding is provided on the adjusting frame.

[0007] Optionally, the fixing structure includes a first jacket, a second jacket and a locking bolt. Clamping grooves adapted to the anchor piles are provided on both the first jacket and the second jacket. The second jacket is fixedly arranged on the support frame, and the second jacket is fixed on the first jacket through the locking bolt, and the first jacket and the second jacket are used to clamp the anchor pile.

[0008] Optionally, the fixing structure further includes positioning sleeves fixedly arranged on the support frame. There are a plurality of positioning sleeves, which correspond to the anchor piles one by one, and the positioning sleeves are adapted to the anchor piles.

[0009] Optionally, a top support plate is rotatably arranged on the top support frame. The rotation axis of the top support plate is parallel to the rotation axis of the adjustment frame, and the top support plate is used to abut against the water-stop curtain.

[0010] Optionally, a plurality of top blocks are slidably arranged on the top support plate. Card members for preventing the top blocks from sliding are respectively arranged on the top support plate, and the top blocks are used to abut against the water-stop curtain.

[0011] Optionally, the card member includes a wedge-shaped card block. A plurality of mounting sleeves are fixedly arranged on the top support plate. The mounting sleeves correspond to the top blocks one by one, and the top blocks slidably penetrate through the corresponding mounting sleeves. Mounting openings for placing the wedge-shaped card blocks are formed in the side walls of the mounting sleeves.

[0012] Optionally, a plurality of guide rods are fixedly arranged on the top support frame. The length directions of the guide rods are parallel, and the guide rods slidably penetrate through the adjustment frame.

[0013] Optionally, the limiting assembly includes a limiting frame, a pressing sleeve and a limiting screw. The limiting frame is slidably arranged on the adjustment frame along the length direction of the guide rod. There are a plurality of pressing sleeves, and all of them are fixedly arranged on the limiting frame. The pressing sleeves correspond to the guide rods one by one and are used to sleeve the ends of the corresponding guide rods. The limiting screw is used to prevent the limiting frame from sliding.

[0014] Optionally, a plurality of anchor rods are fixedly arranged at the bottom end of the bottom plate, and the anchor rods are used to insert into the soil layer at the bottom of the foundation pit.

[0015] In a second aspect, the present application provides a construction method for a reinforcement structure for a slope collapse caused by the failure of a foundation pit water-stop curtain, adopting the following technical solution: A construction method for a reinforcement structure for a slope collapse caused by the failure of a foundation pit water-stop curtain includes the following steps: S1. According to the position where the water-stop curtain needs to be reinforced, measure and mark the installation positions of each anchor pile and the bottom plate in the foundation pit; S2. Install anchor piles at each marked position, drive the anchor piles vertically into the soil layer at the bottom of the foundation pit, and fix the bottom plate at the marked position at the bottom of the foundation pit. S3. Install the support frame on each anchor pile and fix it through the fixing structure. S4. Adjust the position of the top support frame and insert the top support rod into the connecting sleeve on the top support frame. S5. Apply a downward pressure to the top support rod to drive the displacement of the top support frame, brace the water stop curtain, and reset the water stop curtain. S6. After the top support frame effectively braces the water stop curtain, prevent the top support frame from sliding on the adjusting frame through the limiting component to complete the reinforcement of the water stop curtain.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application can effectively reinforce the slope collapse caused by the failure of the foundation pit water stop curtain, shorten the construction period, and reduce the input of time and manpower. Specifically, through the reinforcement structure composed of anchor piles, support frames, bottom plates, and top support rods, brace the water stop curtain, quickly reset the collapsed water stop curtain, restore its function, solve the slope collapse problem caused by the failure of the water stop curtain, and achieve the effect of reinforcing the water stop curtain, ensuring the dryness and stability of the construction environment inside the foundation pit; and the entire reinforcement structure is convenient to install, greatly shortening the construction period and reducing the input of time and manpower.

[0017] 2. By rotatably arranging the top support plate on the top support frame, the present application enables the top support plate to flexibly adjust the angle to better abut against the water stop curtain, improving the support effect on the water stop curtain and further enhancing the reinforcement effect on the slope collapse of the foundation pit water stop curtain failure.

[0018] 3. By slidably arranging a plurality of top blocks on the top support plate, further adjust the contact position with the water stop curtain by sliding the top blocks, and at the same time use the clamping parts to prevent the top blocks from sliding, which can ensure that the top blocks stably abut against the water stop curtain, improve the stability of the support on the water stop curtain, and thus better reinforce the water stop curtain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural sectional view of the embodiment of the present application; Figure 2 is the overall structural schematic diagram of the embodiment of the present application; Figure 3 is the structural schematic diagram of the embodiment of the present application for expressing the fixing structure; Figure 4 is the structural schematic diagram of the embodiment of the present application for expressing the top support plate.

[0020] Description of reference numerals: 1, anchor pile; 2, support frame; 21, first jacket; 22, second jacket; 23, locking bolt; 231, nut; 24, positioning sleeve; 3, bottom plate; 31, anchor rod; 4, top strut; 5, adjusting frame; 51, limiting frame; 52, crimping sleeve; 53, limiting screw; 6, top support frame; 61, connecting sleeve; 62, guide rod; 63, top support plate; 631, top block; 632, mounting sleeve; 633, wedge-shaped block; 634, mounting port. Detailed implementation manners

[0021] The following will combine with the attached Figure 1 - attached Figure 4 , to clearly and completely describe the technical solutions in the embodiments of the present invention. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can fully combine the embodiments of the present invention and obtain other embodiments without creative labor, and these embodiments are also within the protection scope of the present invention.

[0022] The inventors of the present application found that in the current industry, for problems such as slope collapse caused by the failure of the foundation pit water-stop curtain, mainly methods such as grouting reinforcement and steel sheet pile support are used to deal with. Although the above methods can improve the performance of the soil to a certain extent and achieve the effect of reinforcing the foundation pit slope, they generally have the defects of long construction period and large investment in time and labor. Therefore, the present application discloses a reinforcement structure and its construction method for slope collapse caused by the failure of the foundation pit water-stop curtain, mainly adopting the following solutions: The embodiments of the present application disclose a reinforcement structure for slope collapse caused by the failure of the foundation pit water-stop curtain. Refer to Figure 1 、 2, including anchor piles 1, support frames 2, bottom plates 3 and top struts 4. Among them, multiple anchor piles 1 are provided and are used to be driven into the soil layer at the bottom of the foundation pit. The support frame 2 is installed on each anchor pile 1, and the support frame 2 and the anchor pile 1 are fixed together through a fixing structure, which can ensure the stability of the support frame 2 and provide a reliable foundation for the subsequent support of the water-stop curtain. An adjusting frame 5 is rotatably arranged on the support frame 2, and a top strut frame 6 is slidably arranged on the adjusting frame 5. The top strut frame 6 is used to support the water-stop curtain. By rotating the adjusting frame 5 and sliding the top strut frame 6, the position and angle of the top strut frame 6 can be flexibly adjusted to better adapt to the water-stop curtain in different situations. The bottom plate 3 is fixed at the bottom of the foundation pit. One end of the top strut 4 is hinged to the bottom plate 3. A connecting sleeve 61 is rotatably arranged on the top strut frame 6. The connecting sleeve 61 is adapted to the top strut 4 and is used for the top strut 4 to be inserted. A limiting component for preventing the top strut frame 6 from sliding is arranged on the adjusting frame 5. This structural combination enables the top strut 4 to exert a force on the top strut frame 6 with the support of the bottom plate 3, thereby realizing the top support and reset of the water-stop curtain, and the limiting component can ensure that the position of the top strut frame 6 is fixed after the water-stop curtain is top-supported, maintaining the reinforcement effect.

[0023] Refer to Figure 2 , a plurality of anchor rods 31 are fixedly arranged at the bottom end of the bottom plate 3. The anchor rods 31 are generally rod-shaped structures such as steel bars and are used to be inserted into the soil layer at the bottom of the foundation pit. The anchor rods 31 and the bottom plate 3 can be fixedly connected by welding or other means. After being inserted into the soil layer, the friction between the bottom plate 3 and the soil layer can be increased, making the bottom plate 3 more firmly fixed at the bottom of the foundation pit and providing a reliable support foundation for the top strut 4.

[0024] Refer to Figure 3 , the fixing structure includes a first jacket 21, a second jacket 22 and a locking bolt 23. The first jacket 21 is usually in a semi-circular arc shape and has a clamping groove inside that is adapted to the outer shape of the anchor pile 1. The material is generally selected from high-strength steel, which has good toughness and anti-deformation ability. The second jacket 22 also has a clamping groove adapted to the anchor pile 1. The clamping grooves of the first jacket 21 and the second jacket 22 can be spliced together to perfectly wrap the anchor pile 1. The locking bolt 23 is adapted with a nut 231 and is used to fasten the first jacket 21 and the second jacket 22 together, thereby realizing the fixation of the support frame 2 and the anchor pile 1.

[0025] Refer to Figure 3 , the fixing structure further includes a positioning sleeve 24 fixedly arranged on the support frame 2. The positioning sleeve 24 is generally cylindrical in shape and is mostly made of metal. Its inner diameter is adapted to the outer diameter of the anchor pile 1. A plurality of positioning sleeves 24 are provided and correspond to the anchor piles 1 one by one. When installing the anchor piles 1, the positioning sleeve 24 can provide a positioning and guiding function for the anchor piles 1, facilitating the accurate insertion of the anchor piles 1 into the appropriate positions, and at the same time enhancing the connection stability between the support frame 2 and the anchor piles 1.

[0026] Refer toFigure 2 , a plurality of guide rods 62 are fixedly arranged on the top support frame 6. The guide rods 62 are generally cylindrical rods made of metal. The length directions of the guide rods 62 are parallel, and the guide rods 62 slidably pass through the adjusting frame 5 to guide the sliding of the top support frame 6 on the adjusting frame 5. In addition, structures such as slider guides can also be used to replace the cooperation between the guide rod 62 and the adjusting frame 5.

[0027] Refer to Figure 2 , the limiting component includes a limiting frame 51, a crimping sleeve 52 and a limiting screw 53. The limiting frame 51 is made of steel and is slidably arranged on the adjusting frame 5 along the length direction of the guide rod 62. A plurality of crimping sleeves 52 are provided and are all fixedly arranged on the limiting frame 51. The crimping sleeves 52 correspond to the guide rods 62 one by one, and the top ends of the crimping sleeves 52 are closed. The limiting screw 53 is rotatably arranged on the adjusting frame 5, and the length direction of the limiting screw 53 is parallel to the length direction of the guide rod 62. The limiting screw 53 is in threaded cooperation with the limiting frame 51. By rotating the limiting screw 53, the limiting frame 51 can be pushed to slide on the adjusting frame 5. When the limiting screw 53 stops rotating, the sliding of the limiting frame 51 can be blocked. When the limiting frame 51 slides to a suitable position, the crimping sleeve 52 can be sleeved on the end of the corresponding guide rod 62 and tightly press the guide rod 62 to prevent the guide rod 62 from continuing to slide.

[0028] Refer to Figure 2 , a top support plate 63 is rotatably arranged on the top support frame 6. The top support plate 63 is usually flat and can be made of steel plate, etc. Its rotation axis is parallel to the rotation axis of the adjusting frame 5. The advantage of this setting is that the top support plate 63 can flexibly adjust its own angle according to the actual shape and inclination angle of the water-stop curtain, better fit with the water-stop curtain, improve the support effect on the water-stop curtain, and further enhance the reinforcement effect on the slope collapse of the foundation pit water-stop curtain failure.

[0029] Refer to Figure 2 , 4, a plurality of top blocks 631 are slidably inserted through the top support plate 63. Each mounting block is distributed along the length direction of the top support plate 63, and the sliding direction of the top block 631 is perpendicular to the top support plate 63. A plurality of mounting sleeves 632 are fixedly arranged on the end face of the top support plate 63 close to the top support frame 6. The mounting sleeves 632 correspond to the top blocks 631 one by one, and the top block 631 is slidably inserted into the corresponding mounting sleeve 632. The end face of the mounting sleeve 632 away from the top support plate 63 is closed. A clamping member for preventing the top block 631 from sliding is arranged on the top support plate 63; specifically, the clamping member includes a wedge-shaped clamping block 633, and an installation opening 634 for inserting the wedge-shaped clamping block 633 is formed in the side wall of the mounting sleeve 632. After the top support plate 63 abuts against the waterproof curtain, the wedge-shaped clamping block 633 is inserted into the installation opening 634 of each mounting sleeve 632, and the top block 631 is pushed to slide and abut against the waterproof curtain to adapt to the support requirements of different parts of the waterproof curtain, improve the stability of the support for the waterproof curtain, and thus better reinforce the waterproof curtain.

[0030] The implementation principle of the reinforcement structure for the slope collapse caused by the failure of the foundation pit waterproof curtain in the embodiment of the present application is as follows: The reinforcement structure provides stable support by driving the anchor piles 1 deep into the soil layer at the bottom of the foundation pit. The support frame 2 is firmly connected to the anchor piles 1 through the fixing structure to provide a support platform for subsequent components. The settings of the adjusting frame 5 and the top support frame 6 make the support for the waterproof curtain more flexible and can adapt to different collapse situations. The cooperation of the top support plate 63 and the top block 631 can be finely adjusted according to the actual shape and position of the waterproof curtain to improve the support effect. The combination of the limiting component and the guide rod 62 ensures the locking of the position of the top support frame 6 and makes the whole structure more stable. The bottom plate 3 and the anchor bolts 31 further enhance the stability of the whole reinforcement structure. Compared with the prior art, this structure is convenient to install, can quickly reset and reinforce the collapsed waterproof curtain, and the whole reinforcement structure is convenient to install, greatly shortening the construction period, reducing the input of time and manpower, and effectively solving the problem of slope collapse caused by the failure of the foundation pit waterproof curtain.

[0031] The embodiment of the present application also discloses a construction method for a reinforcement structure for the slope collapse caused by the failure of the foundation pit waterproof curtain, including the following steps: S1. According to the position where the waterproof curtain needs to be reinforced, measure and mark the installation positions of each anchor pile 1 and the bottom plate 3 in the foundation pit. When measuring, professional measuring tools such as total stations and levels need to be used to ensure the accuracy of the marked positions. The surveyors should accurately determine the installation points of the anchor piles 1 and the bottom plate 3 according to the actual damage condition of the waterproof curtain and the on-site terrain, and mark them with obvious markers for subsequent construction.

[0032] S2. Install the anchor piles 1 at each marked position respectively, drive the anchor piles 1 vertically into the soil layer at the bottom of the foundation pit, and fix the bottom plate 3 at the marked position at the bottom of the foundation pit. When driving the piles, equipment such as a pile driver can be used to ensure that the anchor piles 1 are vertically driven into the soil layer to a sufficient depth to ensure their stability. The bottom plate 3 is firmly fixed at the marked position at the bottom of the foundation pit through the anchor rods 31.

[0033] S3. Install the support frame 2 on each anchor pile 1 and fix it through the fixing structure. When installing the support frame 2, first align it with each anchor pile 1, use the first jacket 21 and the second jacket 22 to clamp the anchor pile 1, and connect the support frame 2 firmly with the anchor pile 1.

[0034] S4. Adjust the position of the top support frame 6 by rotating the adjustment frame 5 and sliding the top support frame 6 on the adjustment frame 5, and then accurately insert the end of the top support rod 4 into the connecting sleeve 61.

[0035] S5. Apply a downward pressure to the top support rod 4 to drive the displacement of the top support frame 6 and support the waterproof curtain, and reset the waterproof curtain. Equipment such as a jack can be used to apply the pressure. Slowly and evenly apply pressure to the top support rod 4 to make the top support frame 6 gradually approach the waterproof curtain and support it until the waterproof curtain returns to the appropriate position.

[0036] S6. After the top support frame 6 forms an effective support for the waterproof curtain, first slide the limit frame 51 to the appropriate position by rotating the limit screw rod 53, so that the crimping sleeve 52 sleeves on the end of the guide rod 62, thereby preventing the top support frame 6 from sliding on the adjustment frame 5 and completing the reinforcement of the waterproof curtain.

[0037] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A reinforcement structure for the collapse of a slope with a failed cut-off curtain in a foundation pit, characterized in that: It includes anchor piles (1), a support frame (2), a bottom plate (3), and a top strut (4). A plurality of the anchor piles (1) are provided and are used to be driven into the soil layer at the bottom of the foundation pit. The support frame (2) is used to be installed on each of the anchor piles (1), and fixing structures for fixing each of the anchor piles (1) are respectively provided on the support frame (2). An adjusting frame (5) is rotatably provided on the support frame (2), and a top support frame (6) is slidably provided on the adjusting frame (5) for supporting the waterproof curtain. The bottom plate (3) is fixed at the bottom of the foundation pit. One end of the top strut (4) is hinged to the bottom plate (3). A connecting sleeve (61) is rotatably provided on the top support frame (6). The connecting sleeve (61) is adapted to the top strut (4) and is used for the top strut (4) to be inserted therein. A limiting component for preventing the top support frame (6) from sliding is provided on the adjusting frame (5).

2. The reinforcement structure for the slope collapse caused by the failure of the foundation pit water-stop curtain according to claim 1, characterized in that: The fixing structure includes a first clamping sleeve (21), a second clamping sleeve (22), and a locking bolt (23). Clamping grooves adapted to the anchor pile (1) are provided on both the first clamping sleeve (21) and the second clamping sleeve (22). The second clamping sleeve (22) is fixedly provided on the support frame (2). The second clamping sleeve (22) is fixed to the first clamping sleeve (21) by the locking bolt (23), and the first clamping sleeve (21) and the second clamping sleeve (22) are used to clamp the anchor pile (1).

3. The reinforcement structure for the slope collapse caused by the failure of the foundation pit water-stop curtain according to claim 2, wherein: The fixing structure further includes positioning sleeves (24) fixedly provided on the support frame (2). A plurality of the positioning sleeves (24) are provided and are in one-to-one correspondence with the anchor piles (1). The positioning sleeves (24) are adapted to the anchor piles (1).

4. A reinforcement structure for the collapse of a slope with the failure of the foundation pit water-stop curtain according to claim 1, characterized in that: A top support plate (63) is rotatably provided on the top support frame (6). The rotation axis of the top support plate (63) is parallel to the rotation axis of the adjusting frame (5), and the top support plate (63) is used to abut against the waterproof curtain.

5. The reinforcement structure for the slope collapse caused by the failure of the foundation pit water-stop curtain according to claim 4, wherein: A plurality of top blocks (631) are slidably provided on the top support plate (63). Fastening members for preventing the top blocks (631) from sliding are respectively provided on the top support plate (63). The top blocks (631) are used to abut against the waterproof curtain.

6. The reinforcement structure for the slope collapse caused by the failure of the foundation pit water-stop curtain according to claim 5, characterized in that: The fastening member includes a wedge-shaped clamping block (633). A plurality of mounting sleeves (632) are fixedly provided on the top support plate (63). The mounting sleeves (632) are in one-to-one correspondence with the top blocks (631), and the top blocks (631) slidably pass through the corresponding mounting sleeves (632). Mounting openings (634) for the wedge-shaped clamping blocks (633) to be placed are formed in the side walls of the mounting sleeves (632).

7. A reinforcement structure for a slope collapse caused by the failure of a foundation pit water-stop curtain according to claim 1, characterized in that: A plurality of guide rods (62) are fixedly provided on the top support frame (6). The length directions of the guide rods (62) are parallel to each other, and the guide rods (62) slidably pass through the adjusting frame (5).

8. A reinforcement structure for the collapse of a slope with a failed foundation pit water-stop curtain according to claim 7, characterized in that: The limiting component includes a limiting frame (51), a crimping sleeve (52) and a limiting screw (53). The limiting frame (51) is slidably arranged on the adjusting frame (5) along the length direction of the guide rod (62). A plurality of crimping sleeves (52) are provided and are all fixedly arranged on the limiting frame (51). The crimping sleeves (52) correspond to the guide rods (62) one by one and are used for sleeving on the ends of the corresponding guide rods (62). The limiting screw (53) is used to prevent the limiting frame (51) from sliding.

9. The reinforcement structure for the collapse of the slope with the failure of the foundation pit water-stop curtain according to claim 1, wherein: A plurality of anchor rods (31) are fixedly arranged at the bottom end of the bottom plate (3). The anchor rods (31) are used for inserting into the soil layer at the bottom of the foundation pit.

10. A construction method for a reinforcement structure for a slope collapse caused by the failure of a foundation pit water-stop curtain according to any one of claims 1-9, characterized in that, It includes the following steps: S1. According to the positions where the water-stop curtain needs to be reinforced, measure and mark the installation positions of each anchor pile (1) and the bottom plate (3) in the foundation pit. S2. Install the anchor piles (1) at the marked positions respectively, drive the anchor piles (1) vertically into the soil layer at the bottom of the foundation pit, and fix the bottom plate (3) at the marked position at the bottom of the foundation pit. S3. Install the support frame (2) on each anchor pile (1) and fix it through a fixing structure. S4. Adjust the position of the top support frame (6), and insert the top support rod (4) into the connecting sleeve (61) on the top support frame (6). S5. Apply a downward pressure to the top support rod (4), drive the displacement of the top support frame (6), and support the water-stop curtain to reset the water-stop curtain. S6. After the top support frame (6) effectively supports the water-stop curtain, prevent the top support frame (6) from sliding on the adjusting frame (5) through the limiting component to complete the reinforcement of the water-stop curtain.

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