Deep foundation pit steel sheet pile support drainage device and sudden gushing prevention method

Abstract

The present application relates to the technical fields of deep pit support drainage, in particular to a deep foundation pit steel sheet pile support drainage device and a sudden gushing prevention method, which comprises a mounting frame, two support mechanisms are installed on the mounting frame, two water collecting mechanisms are respectively installed on the two support mechanisms, two sealing mechanisms are respectively installed at the bottom of the two water collecting mechanisms, a connecting mechanism and a grouting mechanism are installed on the mounting frame; through the connection of the connecting mechanism and the mounting frame, the mounting frame and the two H-shaped steel cross beams outside the steel sheet pile are clamped and installed, through the cooperation of the support mechanism, the water collecting mechanism is installed outside the mounting frame, and the appropriate water collecting position can be adjusted, through the installation of the sealing mechanism, the sealing material is transported in the sealing mechanism under the cooperation of the grouting mechanism, which is beneficial to the filling of the gap at the bottom of the steel sheet pile, so that the sealing effect reaches the best, thereby realizing the collection and discharge of the foundation pit leakage water, ensuring the stability of the foundation pit and the convenience of construction, and avoiding the further expansion of the sudden gushing accident.

Description

Technical Field

[0001] This invention relates to the field of deep pit support and drainage technology, specifically a deep foundation pit steel sheet pile support and drainage device and a method for preventing sudden surges. Background Technology

[0002] Deep foundation pit support typically employs sheet piles. This method is widely used due to its simplicity, ease of construction, and effective support. During construction, sheet piles are simply driven along the designed perimeter of the foundation pit, with the water-stopping joints of adjacent Larssen sheet piles interlocking. Lateral bracing utilizes H-shaped steel beams hinged together, positioned at the midpoint of the sheet piles.

[0003] However, the repeated use of sheet piles in this method makes the waterstops at the joints of the sheet piles prone to deformation, leading to groundwater leakage along the deformed joints. This leakage is particularly severe when there is a sudden surge of water on the sidewall of a deep foundation pit, affecting the construction and safety of the project.

[0004] Since the sheet piles cannot be replaced after the excavation of the foundation pit is completed, the current treatment method is to drill probe holes along the outside of the leaking sheet pile joints to detect the location of the leak and inject high-strength grout using deep grouting. However, the injected grout is difficult to accurately reach the leak location, resulting in poor treatment results and affecting the construction and safety stability of the foundation pit.

[0005] Therefore, there is an urgent need to develop a device that can be quickly installed on the inside of the foundation pit, integrates active drainage and precise and efficient sealing, and can mark the deformation joints, in order to solve the problem of leakage and sudden water inrush caused by the deformation of the interlock in the steel sheet pile support of deep foundation pits. Summary of the Invention

[0006] To address the problems in the prior art, this invention provides a deep foundation pit steel sheet pile support drainage device and a method for preventing sudden surges.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a deep foundation pit steel sheet pile support and drainage device, including an installation frame, two support mechanisms are installed on the installation frame, two water collection mechanisms are respectively installed on the two support mechanisms, a sealing mechanism is respectively installed at the bottom of the two water collection mechanisms, and a connecting mechanism and a grouting mechanism are installed on the installation frame.

[0008] Specifically, the support mechanism includes a sliding sleeve, and two sets of sliding sleeves are slidably connected to the mounting bracket. An outer sleeve is rotatably connected to each of the two sets of sliding sleeves, and a support rod is threaded to both ends of the outer sleeve.

[0009] Specifically, each of the two sets of sliding sleeves has a connecting block installed on one side, and the two outer sleeves are rotatably connected to the two sets of connecting blocks at both ends. The other side of each of the two sets of sliding sleeves is threaded with a bolt, and one end of the bolt abuts against the mounting bracket.

[0010] Specifically, the water collection mechanism includes a water collection cover, and the mounting frame is provided with water collection covers on both sides. One end of the two sets of support rods is fixedly connected to the outside of the two water collection covers respectively.

[0011] Specifically, a drain pipe is installed at the center of the top of each of the two water collection hoods, and a one-way air inlet valve is installed on the outer side of the bottom of each of the two water collection hoods.

[0012] Specifically, the water collection hood is an irregular cylindrical container, with one side of the opening of the water collection hood covering the steel sheet pile, and rubber strips are installed at the outer edges of the two water collection hoods, with the rubber strips having a hollow internal structure.

[0013] Specifically, the connecting mechanism includes clamping blocks. Symmetrical clamping blocks are installed on the top and bottom sides of the mounting frame. The opposite sides of the two symmetrical clamping blocks are connected to the inner side of the mounting frame through connecting springs. The clamping blocks are slidably connected to the inner side of the mounting frame through connecting springs.

[0014] Specifically, the top and bottom inner walls of the mounting bracket are respectively provided with symmetrical guide grooves, and guide blocks are slidably connected inside the guide grooves. The guide blocks are fixedly connected to the two ends of the clamping blocks.

[0015] Specifically, a pull rod is vertically connected to the clamping block at the top of the mounting bracket, and a lifting ring is connected to the pull rod.

[0016] Specifically, the sealing mechanism includes a sealing chamber. The bottom of each of the two water collection hoods is provided with a sealing chamber. The water collection area of ​​the water collection hood is completely separated from the sealing chamber. One side of the sealing chamber extends to the outside of the water collection hood. A filling block is installed in the inner part of each of the two sealing chambers. The filling block has a cavity inside. The side of the filling block that contacts the water stop of the steel sheet pile has multiple through holes. The top of the filling block has multiple notches. The filling block is made of a rubber membrane with a certain elasticity.

[0017] Specifically, the grouting mechanism includes a fixing plate, which is installed on the outer side of the bottom of the mounting frame. A cylinder is fixedly connected to the center of one side of the fixing plate. One end of the cylinder extends to the outer side of the other side of the mounting frame. A piston plate is slidably connected inside the cylinder. A piston rod is threadedly connected to the center of one end of the cylinder. One end of the piston rod is rotatably connected to the center of the piston plate. A handwheel is installed at the other end of the piston rod. A delivery pipe is installed at the top of one end of the cylinder. Grouting pipes are installed on both sides of the other end of the cylinder. The two grouting pipes pass through the side wall of the water collection hood and extend into the sealing chamber. One end of each of the two grouting pipes is connected to two filling blocks.

[0018] A method for preventing sudden water inrush in a deep foundation pit steel sheet pile supported drainage device includes the following steps: S1: First, the staff adjusts the two support mechanisms to place the water collection mechanism in the appropriate position, and then fixes the support mechanisms. S2: Then, the installation frame is moved to the side of the sheet pile that needs to be drained by the crane equipment, and the connecting mechanism is engaged with the two H-shaped steel beams on the outside of the sheet pile, so that the installation frame is stably installed on the side of the sheet pile. At the same time, the water collection mechanism can be engaged with the seepage position of the sheet pile, so that the seepage water enters the water collection mechanism for storage. S3: Prepare the sealing material. The sealing material is made of expansive cement, fly ash and sawdust in a certain proportion. Then, by controlling the grouting mechanism to reset, the sealing material is sent into the grouting mechanism for storage before it solidifies. S4: Finally, the sealing material is injected into the sealing mechanism by controlling the grouting mechanism. The sealing material overflows from the sealing mechanism to further seal the gap at the lower end of the water collection mechanism. At the same time, the sealing material penetrates and is squeezed into the water-stop joint gap of the adjacent steel sheet pile deformation, forming a seal for the irregular gap. After solidification, it solidifies in the gap of the deformed joint, forming a mark, which is convenient for adjusting the deformed part of the pulled-out steel sheet pile after the project is completed. During implementation, the injection pressure of the grouting mechanism can be adjusted according to the actual sealing effect.

[0019] The beneficial effects of this invention are: (1) The deep foundation pit steel sheet pile support drainage device and anti-surge method described in this invention, through the connection of the connecting mechanism and the installation frame, facilitates the engagement and installation of the installation frame and the two H-shaped steel beams on the outside of the steel sheet pile, so that the installation frame, support mechanism and water collection mechanism form a whole, and support and reinforce the deformed steel sheet pile, so as to prevent the leakage of water and the further expansion of the disaster caused by the surge.

[0020] (2) The deep foundation pit steel sheet pile support drainage device and anti-surge method described in this invention, through the cooperation of the support mechanism, allows the water collection mechanism to be installed on the outside of the installation frame and can be adjusted to a suitable water collection position. The water collection mechanism collects groundwater leakage at the deformation point of the steel sheet pile water stop, preventing groundwater from flowing into the foundation pit and affecting the foundation pit construction and safety. At the same time, when a sudden surge of water seeps into the foundation pit during the excavation process, this device can be used for drainage and reinforcement.

[0021] (3) The deep foundation pit steel sheet pile support drainage device and anti-surge method described in this invention, through the installation of the sealing mechanism, with the cooperation of the grouting mechanism, realizes the delivery of sealing material inside the sealing mechanism, which is conducive to filling the gap at the bottom of the steel sheet pile, forming a seal for irregular deformation joints. When the sealing material solidifies, it forms a mark at the joint of the deformed steel sheet pile, which is not easy to fall off. After the construction is completed, the steel sheet pile is pulled out and adjusted and repaired. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the connection structure between the water collection cover and the support rod of the present invention; Figure 3 This is a schematic diagram of the connection structure between the clamping block and the mounting frame of the present invention; Figure 4 This is a schematic diagram of the connection structure between the sealing chamber and the water collection hood of the present invention; Figure 5 This is a schematic diagram of the connection structure between the outer sleeve and the two sliding sleeves of the present invention; Figure 6 This is a schematic diagram of the connection structure between the filling block and the grouting pipe of the present invention; Figure 7 This is a schematic diagram of the connection structure between the piston plate and the cylinder body of the present invention; Figure 8 This is a schematic diagram illustrating the construction and installation of the mounting frame, H-beams, and sheet piles of the present invention.

[0024] In the diagram: 1. Mounting frame; 2. Support mechanism; 201. Sliding sleeve; 202. Outer sleeve; 203. Support rod; 204. Connecting block; 205. Bolt; 3. Water collection mechanism; 301. Water collection cover; 303. One-way air inlet valve; 304. Rubber strip; 4. Connecting mechanism; 401. Clamping block; 402. Guide groove; 403. Guide block; 404. Connecting spring; 405. Tie rod; 406. Lifting ring; 5. Sealing mechanism; 501. Filling block; 502. Through hole; 503. Sealing chamber; 504. Cavity; 505. Notch; 6. Grouting mechanism; 601. Fixing plate; 602. Cylinder body; 603. Handwheel; 604. Piston rod; 605. Piston plate; 606. Delivery pipe; 607. Grouting pipe; 7. H-beam; 8. Steel sheet pile. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, a deep foundation pit steel sheet pile support drainage device of the present invention includes an installation frame 1, two support mechanisms 2 are installed on the installation frame 1, two water collection mechanisms 3 are respectively installed on the two support mechanisms 2, and a sealing mechanism 5 is respectively installed at the bottom of the two water collection mechanisms 3. A connecting mechanism 4 and a grouting mechanism 6 are installed on the installation frame 1.

[0027] Specifically, such as Figure 1 , Figure 2 and Figure 5 As shown, the support mechanism 2 includes a sliding sleeve 201. Two sets of sliding sleeves 201 are slidably connected to the mounting frame 1. The two sliding sleeves 201 form a set. An outer sleeve 202 is rotatably connected to each of the two sets of sliding sleeves 201. Support rods 203 are threaded to both ends of the outer sleeves 202. The installation of the two sets of sliding sleeves 201 facilitates the connection of the two outer sleeves 202. The installation of the two outer sleeves 202 enables the installation of the two sets of support rods 203, which facilitates the connection of the two water collection covers 301. The sliding of the sliding sleeves 201 allows for the adjustment of the installation height of the water collection covers 301. The rotation of the two outer sleeves 202 allows for the adjustment of the extension length of the two sets of support rods 203, thereby controlling the lateral position adjustment of the two water collection covers 301 and ensuring that the water collection covers 301 can be well connected to the seepage area.

[0028] Specifically, such as Figure 5 As shown, each of the two sets of sliding sleeves 201 has a connecting block 204 installed on one side. The two outer sleeves 202 are rotatably connected to the inside of the two sets of connecting blocks 204 at both ends. The other side of each of the two sets of sliding sleeves 201 is threaded with a bolt 205. One end of the bolt 205 abuts against the mounting bracket 1. By installing the connecting block 204, the outer sleeve 202 can be rotatably connected to the outside of the sliding sleeve 201. By installing the bolt 205, the upper limit of the sliding sleeve 201 on the mounting bracket 1 can be easily set. By rotating the bolt 205 in the opposite direction, the position of the sliding sleeve 201 can be easily adjusted.

[0029] Specifically, such as Figure 1 and Figure 2 As shown, the water collection mechanism 3 includes a water collection cover 301. The mounting frame 1 has water collection covers 301 on both sides. One end of each of the two sets of support rods 203 is fixedly connected to the outside of the two water collection covers 301. The installation of the water collection covers 301 facilitates the fastening of the seepage area of ​​the steel sheet pile 8, allowing the seepage water to enter the inside of the water collection cover 301 for storage, which is convenient for subsequent pumping and discharge.

[0030] Specifically, such as Figure 1 , Figure 2 and Figure 4As shown, drain pipes are installed at the top center of the two water collection hoods 301, and one-way air inlet valves 303 are installed on the bottom outer side of the two water collection hoods 301. The installation of drain pipes facilitates connection with external water pumps to extract water from the inside of the water collection hoods 301. The installation of one-way air inlet valves 303 allows air to be added to compensate for the negative pressure caused by water pumping when there is insufficient water seepage.

[0031] Specifically, such as Figure 4 As shown, the water collection cover 301 is an irregular cylindrical container. One side of the opening of the water collection cover 301 covers the steel sheet pile 8. Rubber strips 304 are installed on the outer edges of the two water collection covers 301. The rubber strips 304 have a hollow structure inside, which is conducive to the water collection cover 301 collecting seepage water well. At the same time, the installation of the rubber strips 304 makes the water collection cover 301 fit tightly with the steel sheet pile 8, which plays a role in preventing leakage. The rubber strips 304 have good elasticity and are not easily damaged.

[0032] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, the connecting mechanism 4 includes clamping blocks 401. Symmetrical clamping blocks 401 are installed on the top and bottom sides of the mounting frame 1. The opposite sides of the two symmetrical clamping blocks 401 are connected to the inner side of the mounting frame 1 through connecting springs 404. The clamping blocks 401 are slidably connected to the inner side of the mounting frame 1 through connecting springs 404. By installing two symmetrical clamping blocks 401, it is easy to engage with the two H-beams 7 on the outer side of the sheet pile 8, so that the mounting frame 1 is installed in the cavity between the sheet pile 8 and the H-beams 7. With the cooperation of the connecting springs 404, the two symmetrical clamping blocks 401 are tightly engaged with the two H-beams 7 and will not loosen, while facilitating subsequent disassembly.

[0033] Specifically, such as Figure 3 As shown, the top and bottom inner walls of the mounting bracket 1 are respectively provided with symmetrical guide grooves 402. A guide block 403 is slidably connected inside the guide groove 402. The guide block 403 is fixedly connected to the two ends of the clamping block 401. The opening of the guide groove 402 facilitates the installation of the guide block 403. The installation of the guide block 403 and the clamping block 401 ensures that the clamping block 401 will not fall off when sliding on the mounting bracket 1, and also plays a guiding role.

[0034] Specifically, such as Figure 3 and Figure 8As shown, a tie rod 405 is vertically connected to the clamping block 401 at the top of the mounting frame 1. A lifting ring 406 is connected to the tie rod 405. The installation of the tie rod 405 enables the connection to the lifting ring 406, facilitating the lifting and moving of the mounting frame 1 by external equipment. After the lifting ring 406 lifts the mounting frame 1, the connecting spring 404 of the mounting frame 1 is compressed under the action of gravity, which increases the distance between the two clamping blocks 401. After adjusting the position of the mounting frame 1, and with manual adjustment, the upper and lower clamping blocks 401 are respectively locked onto the upper and lower H-beam 7 crossbeams, thus fixing the mounting frame 1.

[0035] Specifically, such as Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, the sealing mechanism 5 includes a sealing chamber 503. Two water collection hoods 301 are each provided with a sealing chamber 503 at their bottoms. The water collection area of ​​the water collection hood 301 is completely separated from the sealing chamber 503. One side of the sealing chamber 503 extends to the outside of the water collection hood 301. A filling block 501 is installed inside each of the two sealing chambers 503. The filling block 501 has a cavity 504 inside. Multiple through holes 502 are provided on the side of the filling block 501 that contacts the water-stopping joint of the sheet pile 8. Multiple notches 505 are provided on the top of the filling block 501. The filling block 501 is made of a rubber membrane with a certain degree of elasticity. The opening of the sealing chamber 503 facilitates the installation of the filling block 501. Due to the elasticity of the filling block 501, it can withstand a certain pressure... The filling block 501 expands, increasing its tightness with the sheet pile 8. Afterwards, sealing material is injected into the filling block 501. With the cooperation of the through hole 502 and the notch 505, the sealing material overflows, further sealing the gap at the lower end of the water collection cover 301. Simultaneously, the sealing material penetrates and squeezes into the water-stop joint gaps of the deformed adjacent sheet pile 8, forming a seal for irregular gaps. After solidification, it solidifies within the gaps of the deformed joint, forming a mark. This facilitates adjustment of the deformed parts of the pulled-out sheet pile 8 after the project is completed. During implementation, the piston rod 604 can be rotated to adjust the pressure inside the filling block 501 according to the actual sealing effect, achieving the best sealing effect.

[0036] Specifically, such as Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, the grouting mechanism 6 includes a fixed plate 601. The fixed plate 601 is installed on the outer side of the bottom of the mounting frame 1. A cylinder 602 is fixedly connected to the center of one side of the fixed plate 601. One end of the cylinder 602 extends to the outside of the other side of the mounting frame 1. A piston plate 605 is slidably connected inside the cylinder 602. A piston rod 604 is threadedly connected to the center of one end of the cylinder 602. One end of the piston rod 604 is rotatably connected to the center of the piston plate 605. A handwheel 603 is installed at the other end of the piston rod 604. A delivery pipe 606 is installed on the top of one end of the cylinder 602. Grouting pipes 607 are installed on both sides of the other end of the cylinder 602. The two grouting pipes 607 pass through the water collection hood 301. The sidewall extends into the sealing chamber 503. One end of each of the two grouting pipes 607 is connected to one of the two filling blocks 501. The installation of the fixing plate 601 facilitates the connection of the cylinder 602 to the mounting bracket 1. The piston rod 604 is rotated by the handwheel 603. Under the action of the thread, the piston plate 605 can be moved inside the cylinder 602. The piston plate 605 moves to one end of the cylinder 602, which facilitates the storage of sealing material inside the cylinder 602 through the delivery pipe 606. By rotating the piston rod 604 in the opposite direction, the piston plate 605 squeezes the sealing material out and introduces it into the filling block 501 through the two grouting pipes 607, thereby expanding the filling block 501.

[0037] A method for preventing sudden water inrush in a deep foundation pit steel sheet pile supported drainage device includes the following steps: S1: First, the staff adjusts the two support mechanisms 2 to make the water collection mechanism 3 in a suitable position, and then fixes the support mechanisms 2. S2: Then, the installation frame 1 is moved to the side of the sheet pile 8 that needs to be drained by the crane equipment, and the connecting mechanism 4 is engaged with the two H-shaped steel beams 7 on the outside of the sheet pile 8, so that the installation frame 1 is stably installed on the side of the sheet pile 8. At the same time, the water collection mechanism 3 can be engaged with the seepage position of the sheet pile 8, so that the seepage water enters the water collection mechanism 3 for storage and easy discharge. S3: Prepare the sealing material. The sealing material is made of expansive cement, fly ash and sawdust in a certain proportion. Then, by controlling the grouting mechanism 6 to reset, the sealing material is sent into the grouting mechanism 6 for storage before it solidifies. S4: Finally, the sealing material is injected into the sealing mechanism 5 by controlling the grouting mechanism 6. The sealing material overflows from the sealing mechanism 5 to further seal the gap at the lower end of the water collection mechanism 3. At the same time, the sealing material penetrates and is squeezed into the water-stop joint gap of the adjacent steel sheet pile 8, forming a seal for the irregular gap. After solidification, it solidifies in the gap of the deformed joint, forming a mark, which is convenient for adjusting the deformed part of the pulled-out steel sheet pile 8 after the project is completed. During implementation, the injection pressure of the grouting mechanism 6 can be adjusted according to the actual sealing effect to achieve the best sealing effect.

[0038] In use, this invention, during construction, simply drives sheet piles 8 along the designed edge of the foundation pit, interlocking the water-stopping joints of adjacent Larssen sheet piles 8. Lateral support is achieved by hinged H-beams 7, supported in the middle of the sheet piles 8. Two symmetrical clamping blocks 401 are installed to engage with the two H-beams 7 on the outer side of the sheet piles 8, allowing the mounting frame 1 to be installed on the outer side of the sheet piles 8. With the cooperation of the connecting spring 404, the two symmetrical clamping blocks 401 are tightly engaged with the two H-beams 7, preventing loosening and facilitating subsequent disassembly. The guide groove 402 facilitates the installation of guide blocks 403. The installation of guide blocks 403 and clamping blocks 401 prevents the clamping blocks 401 from falling off when sliding on the mounting frame 1. Furthermore, it serves a guiding function. The installation of the tie rod 405 connects to the lifting ring 406, facilitating the lifting and relocation of the mounting frame 1 by external equipment. After the lifting ring 406 lifts the mounting frame 1, the connecting spring 404 to the mounting frame 1 is compressed under gravity, increasing the distance between the two clamping blocks 401. By adjusting the position of the mounting frame 1 and with manual adjustment, the upper and lower clamping blocks 401 are respectively secured to the upper and lower H-beam 7 crossbeam flanges, thus fixing the mounting frame 1. The installation of two sets of sliding sleeves 201 facilitates the connection of the two outer sleeves 202. The installation of the two outer sleeves 202 facilitates the installation of the two sets of support rods 203, facilitating the connection of the two water collection covers 301. The sliding of the sliding sleeves 201 allows for the adjustment of the water collection covers 301. The length of the two support rods 203 is adjusted by rotating the two outer sleeves 202, thereby controlling the distance between the two water collection covers 301. This ensures that the water collection cover 301 can connect well with the seepage area. The installation of the connecting block 204 allows the outer sleeve 202 to rotatably connect with the outer side of the sliding sleeve 201. The installation of the bolt 205 facilitates the upper limit of the sliding sleeve 201 on the mounting frame 1. Reverse rotation of the bolt 205 facilitates the adjustment of the position of the sliding sleeve 201. The installation of the water collection cover 301 facilitates the connection with the seepage area of ​​the sheet pile 8, allowing the seeping water to enter the water collection cover 301 for storage and subsequent extraction and discharge. The installation of the drain pipe facilitates connection with an external water pump to extract the water collected inside the water collection cover 301. By installing the one-way air inlet valve 303, air can be added to compensate for the negative pressure caused by pumping when there is insufficient seepage. This facilitates the effective collection of seepage by the water collection cover 301. Simultaneously, the installation of the rubber strip 304 ensures a tight fit between the water collection cover 301 and the sheet pile 8, preventing leakage. The rubber strip 304 is elastic and not easily damaged. The opening of the sealing chamber 503 facilitates the installation of the filling block 501. Because the filling block 501 has a certain degree of elasticity, it expands under pressure, increasing the tightness of its fit with the sheet pile 8. The installation of the fixing plate 601 facilitates the connection of the cylinder body 602 to the mounting bracket 1. By rotating the piston rod 604, the piston plate 605 can be controlled to move inside the cylinder body 602 under the action of the threads.The piston plate 605 moves to one end of the cylinder 602, facilitating the delivery of sealing material stored inside the cylinder 602 via the delivery pipe 606. By rotating the piston rod 604 in the opposite direction, the piston plate 605 compresses and discharges the sealing material, which is then introduced into the filling block 501 through two grouting pipes 607, causing the filling block 501 to expand. Subsequent injection of sealing material into the filling block 501, combined with the through hole 502 and notch 505, causes the sealing material to overflow. This overflow further seals the gap at the lower end of the water collection cover 301. Simultaneously, the sealing material permeates and compresses into the water-stopping joint gaps of the adjacent sheet pile 8, forming a seal for irregular gaps. After solidification, it solidifies within the deformed joint gaps, forming a mark for adjustment of the deformed parts of the pulled-out sheet pile 8 after project completion. During implementation, the piston rod 604 can be rotated to adjust the pressure within the filling block 501 according to the actual sealing effect, achieving optimal sealing.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A deep foundation pit steel sheet pile support drainage device, characterized in that: The device includes a mounting frame (1), on which two support mechanisms (2) are mounted, and on each of the two support mechanisms (2) are two water collection mechanisms (3), and on the bottom of each of the two water collection mechanisms (3) are a sealing mechanism (5). The mounting frame (1) is also equipped with a connecting mechanism (4) and a grouting mechanism (6). The support mechanism (2) includes a sliding sleeve (201), and two sets of sliding sleeves (201) are slidably connected on the mounting frame (1). An outer sleeve (202) is rotatably connected to each of the two sets of sliding sleeves (201), and a support rod (203) is threaded to both ends of the outer sleeve (202). The water collection mechanism (3) includes a water collection cover (301). The mounting frame (1) has water collection covers (301) on both sides. One end of the two sets of support rods (203) is fixedly connected to the outside of the two water collection covers (301).

2. The deep foundation pit steel sheet pile support drainage device according to claim 1, characterized in that: A connecting block (204) is installed on one side of each of the two sets of sliding sleeves (201). The two outer sleeves (202) are rotatably connected to the two sets of connecting blocks (204) at both ends. Bolts (205) are threadedly connected to the other side of each of the two sets of sliding sleeves (201). One end of the bolt (205) abuts against the mounting bracket (1).

3. The deep foundation pit steel sheet pile support drainage device according to claim 1, characterized in that: A drain pipe is installed at the top center of the two water collection hoods (301), and a one-way air inlet valve (303) is installed on the bottom outer side of the two water collection hoods (301).

4. The deep foundation pit sheet pile support and drainage device according to claim 1, characterized in that: The water collection cover (301) is an irregular cylindrical container. One side of the opening of the water collection cover (301) covers the steel sheet pile (8). Rubber strips (304) are installed on the outer edges of the two water collection covers (301). The rubber strips (304) have a hollow structure inside.

5. A deep foundation pit sheet pile support drainage device according to claim 1, characterized in that: The connecting mechanism (4) includes a clamping block (401). Symmetrical clamping blocks (401) are installed on the top and bottom sides of the mounting frame (1). The opposite sides of the two symmetrical clamping blocks (401) are connected to the inner side of the mounting frame (1) through connecting springs (404). The clamping blocks (401) are slidably connected to the inner side of the mounting frame (1) through connecting springs (404).

6. A deep foundation pit sheet pile support drainage device according to claim 5, characterized in that: The mounting bracket (1) has symmetrical guide grooves (402) on its top and bottom inner sidewalls respectively. A guide block (403) is slidably connected inside the guide groove (402), and the guide block (403) is fixedly connected to both ends of the clamping block (401).

7. A deep foundation pit sheet pile support drainage device according to claim 6, characterized in that: A pull rod (405) is vertically connected to the clamp (401) at the top of the mounting bracket (1), and a lifting ring (406) is connected to the pull rod (405).

8. A deep foundation pit sheet pile support drainage device according to claim 1, characterized in that: The sealing mechanism (5) includes a sealing chamber (503). The bottom of the two water collection covers (301) are respectively provided with sealing chambers (503). The water collection area of ​​the water collection cover (301) is completely separated from the sealing chamber (503). One side of the sealing chamber (503) extends to the outside of the water collection cover (301). The two sealing chambers (503) are respectively equipped with filling blocks (501). The filling block (501) has a cavity (504) inside. The other side of the filling block (501) is provided with multiple through holes (502). The top of the filling block (501) is provided with multiple notches (505). The filling block (501) is made of a rubber membrane with a certain elasticity.

9. A deep foundation pit sheet pile support drainage device according to claim 8, characterized in that: The grouting mechanism (6) includes a fixing plate (601). The fixing plate (601) is installed on the outer side of the bottom of the mounting frame (1). A cylinder (602) is fixedly connected to the center of one side of the fixing plate (601). One end of the cylinder (602) extends to the outside of the other side of the mounting frame (1). A piston plate (605) is slidably connected inside the cylinder (602). A piston rod (604) is threadedly connected to the center of one end of the cylinder (602). One end of the piston rod (604) is connected to... The piston plate (605) is rotatably connected at the center. A handwheel (603) is installed at the other end of the piston rod (604). A delivery pipe (606) is installed at the top of one end of the cylinder (602). Grouting pipes (607) are installed on both sides of the other end of the cylinder (602). The two grouting pipes (607) pass through the side wall of the water collection cover (301) and extend into the sealing chamber (503). One end of the two grouting pipes (607) is connected to two filling blocks (501) respectively.

10. A method for preventing sudden surges in a deep foundation pit steel sheet pile support drainage device according to any one of claims 1-9, characterized in that: Includes the following steps: S1: First, the staff adjusts the two support mechanisms (2) so that the water collection mechanism (3) is in a suitable position, and then fixes the support mechanism (2); S2: Then, the installation frame (1) is moved to the side of the sheet pile (8) that needs drainage by the crane equipment, and the connecting mechanism (4) is engaged with the two H-beams (7) on the outside of the sheet pile (8), so that the installation frame (1) is stably installed on the side of the sheet pile (8). At the same time, the water collection mechanism (3) can be engaged with the seepage position of the sheet pile (8), so that the seepage water enters the water collection mechanism (3) for storage. S3: Prepare sealing material. The sealing material is made of expansive cement, fly ash and sawdust in a certain proportion. Then, by controlling the grouting mechanism (6) to reset, the sealing material is sent into the grouting mechanism (6) for storage before it solidifies. S4: Finally, by controlling the grouting mechanism (6), the sealing material is injected into the sealing mechanism (5). The sealing material overflows from the sealing mechanism (5) to further seal the gap at the lower end of the water collection mechanism (3). At the same time, the sealing material penetrates and squeezes into the gap of the water-stopping joint of the adjacent sheet pile (8), forming a seal for the irregular gap. After solidification, it solidifies in the gap of the deformed joint, forming a mark, which is convenient to adjust the deformed part of the pulled-out sheet pile (8) after the project is completed. During implementation, the injection pressure of the grouting mechanism (6) can be adjusted according to the actual sealing effect.

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