Deep foundation pit support structure leakage detection equipment and use method

Abstract

The invention discloses deep foundation pit enclosure structure leakage detection equipment and a use method, belongs to the field of deep foundation pit leakage detection, and aims to solve the problems that existing equipment is difficult to find tiny leakage, a detection module is inconvenient to mount, and water seepage of an enclosure structure cannot be accurately detected. The equipment comprises a shell, a detection module, a fixing module and a sealing module, the fixing module realizes stable connection between the equipment and an enclosure structure through a bidirectional screw rod, a trapezoidal clamping block and the like, the sealing module is provided with an inner sealing assembly and an outer sealing assembly to form double sealing, and the detection module is combined with an osmotic pressure detection device, a water quantity detector and a data transceiving device to complete detection and data transmission. During use, after trepanning, fixing and sealing, the soil layer water content change and the water leakage amount can be detected in real time, and the leakage position can be accurately positioned. According to the invention, the installation is convenient, and the accuracy and timeliness of the leakage detection of the deep foundation pit support structure are effectively improved.

Description

Technical Field

[0001] The invention relates to the field of deep foundation pit leakage detection, and in particular to a deep foundation pit retaining structure leakage detection device and its usage method. Background Technology

[0002] Leakage detection equipment for deep foundation pit retaining structures is a specialized instrument used to monitor for leakage in the retaining structure of deep foundation pit projects. These instruments come in various types, each with different working principles, applicable scenarios, and characteristics. Existing leakage detection equipment typically involves capturing real-time video images using cameras, infrared imagers, etc., for detection and assessment.

[0003] The shortcomings are: existing leakage detection equipment cannot detect some minor leaks in time, and existing multi-point detection modules for detecting minor leaks are generally not convenient to install on the building envelope, making it impossible to effectively and accurately detect water seepage on the inside and outside of the building envelope. Summary of the Invention

[0004] To overcome the above deficiencies, an invention provides a leakage detection device and method for deep foundation pit retaining structures, thereby solving the aforementioned problems.

[0005] To achieve the above objectives, the invention adopts the following technical solution: a deep foundation pit retaining structure leakage detection device, including a shell and a detection module.

[0006] Furthermore, it also includes a fixing module and a sealing module. The housing includes a detection cylinder shell and a threaded cylinder. An internal partition is provided at the middle position of the axial interior of the detection cylinder shell. Threaded cylinders are fixedly connected to both ends of the detection cylinder shell. The end face of the detection cylinder shell is fixedly connected to the tail end face of the threaded cylinder. The head of the threaded cylinder is provided with threads.

[0007] Furthermore: the fixing module includes a bidirectional lead screw, a movable disk, and trapezoidal locking blocks. The movable disk is slidably connected to the inner wall of the detection cylinder shell. The movable disk is symmetrically arranged on both sides of the internal partition. The movable disk is threadedly engaged with the threaded portions at both ends of the bidirectional lead screw in opposite directions. The trapezoidal locking block array is arranged on the outer arc surface of the movable disk. The detection cylinder shell is provided with axially arrayed slide rails, and the trapezoidal locking blocks are slidably engaged with the slide rails.

[0008] Furthermore: the detection module includes a data transceiver device, an osmotic pressure detection device, and a water volume detector. The data transceiver device is threadedly connected to the threaded cylinder at the head of the detection shell, the osmotic pressure detection device is threadedly connected to the threaded cylinder at the tail of the detection shell, and the water volume detector is installed on the internal partition.

[0009] Furthermore: limit slots are arrayed on the outer arc surface of the movable disk, the trapezoidal block is rotatably connected to the limit slots through a spring hinge, and limit blocks are fixedly connected to the end faces of the slide near both ends.

[0010] Furthermore: the sealing module includes an outer sealing assembly and an inner sealing assembly.

[0011] Furthermore: the outer sealing assembly includes an annular platform, an outer rubber ring, a circular ring, a guide block, and a pushing assembly. An annular platform is provided at the axial center position of the outer side of the detection cylinder shell. The circular ring is sleeved on the outer arc surface of the detection cylinder shell on the side facing the head. Guide blocks are arrayed on the inner arc surface of the circular ring. The guide blocks slide in cooperation with the slide rail. The outer rubber ring is disposed between the annular platform and the circular ring.

[0012] Furthermore: the inner sealing element includes a guide rod, a slip ring, and an inner rubber ring. The tail of the guide rod is fixedly connected to the side of the internal partition facing the data transceiver device. The slip ring is slidably engaged with the guide rod. The inner rubber ring is disposed between the slip ring and the internal partition.

[0013] Furthermore: the pushing assembly includes a pushing screw and a pushing plate. A support ring frame is fixedly connected to the side of the movable disk near the head of the detection cylinder. The pushing screw is threadedly engaged with the support ring frame. The tail of the pushing screw passes through the movable disk and extends from the side near the internal partition. The tail of the pushing screw is rotatably connected to the pushing plate.

[0014] Furthermore, a through threaded hole is provided on the movable disk near the data transceiver device, and a bolt is screwed into the threaded hole.

[0015] Furthermore: the head end face of the bidirectional lead screw is provided with a screwing hole, and the head end face of the push screw is provided with a screwing hole.

[0016] A method for using a leakage detection device for deep foundation pit retaining structures, characterized by comprising the following steps:

[0017] S1. Installing holes are made in the retaining structure, extending into the soil layer, with larger diameter holes inside the soil layer.

[0018] S2. Insert the device into the installation hole with the tail end facing the soil layer, so that the osmotic pressure detection device comes into contact with the soil layer.

[0019] S3. Remove the data transceiver device and rotate the bidirectional screw by turning the hole until the trapezoidal blocks on both sides of the enclosure structure are locked into the enclosure structure.

[0020] S4. By turning the screw through the hole, the ring is pushed to move towards the ring platform until the outer rubber ring bulges up and fits tightly against the wall of the mounting hole.

[0021] S5. Screw the bolt into the threaded hole. The tail of the bolt passes through the moving plate and presses against the slip ring. Push the slip ring along the guide rod to move towards the inner partition until the inner rubber ring bulges inward and fits tightly against the unthreaded part of the middle section of the double-acting screw.

[0022] S6. Install the data transceiver and supply power to the detection module;

[0023] S7. The osmotic pressure testing device detects data such as the water content in the soil layer in real time and transmits the data to the data transceiver device, which processes and transmits the data.

[0024] S8. When leakage occurs, the water volume detector detects the amount of water seeping in. After processing the data from the osmotic pressure detection device and the water volume detector through the data transceiver, the location of the leakage is found.

[0025] The invention has the following beneficial effects:

[0026] 1. The detection module consists of an osmotic pressure detection device and a water volume detector working together to monitor changes in soil moisture content in real time and accurately capture leakage water volume. Combined with real-time data transmission from the data transceiver device, it can quickly locate the leakage location, improving the accuracy and timeliness of detection.

[0027] 2. The fixing module adopts a structure of two-way screw and trapezoidal clamp, which can be operated with just a hex wrench. It can quickly and firmly fix the equipment to the enclosure structure. It is easy to operate and secure, and is suitable for the installation operation requirements of deep foundation pit sites.

[0028] 3. Equipped with internal and external double sealing components, the external seal ensures a tight fit between the equipment and the wall of the mounting hole, while the internal seal seals and isolates the internal cavity of the equipment. The double seal effectively isolates external interference, avoids distortion of test data, and ensures a stable test environment.

[0029] 4. The equipment has a built-in battery module, which provides independent power for the detection and data transmission components, eliminating the need for an external power source. This makes it suitable for complex on-site environments in deep foundation pits and offers greater flexibility in use. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the invention.

[0031] Figure 2 A structural cross-sectional view of the invention from the main viewpoint;

[0032] Figure 3 A top-view structural cross-sectional view of the invention;

[0033] Figure 4 This is a schematic diagram of the structure of the fixing module and the sealing module of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of the fixing module of the present invention;

[0035] Figure 6 This is a cross-sectional view of the invention fixed to the enclosure structure;

[0036] Figure 7 for Figure 6 Enlarged view of section A in the middle.

[0037] Legend:

[0038] 1. Detection cylinder shell; 2. Threaded cylinder; 3. Data transceiver; 4. Osmotic pressure detection device; 5. Slide rail; 6. Enclosure structure; 7. Two-way lead screw; 8. Internal hexagonal spiral hole; 9. Ring platform; 10. Outer rubber ring; 11. Circular ring; 12. Guide block; 13. Mounting groove; 14. Water volume detector; 15. Moving disk; 16. Limiting groove; 17. Trapezoidal locking block; 18. Limiting block; 19. Push screw; 20. Push plate; 21. Guide rod; 22. Slip ring; 23. Inner rubber ring; 24. Threaded hole; 25. Support ring frame; 26. Limiting slider; 27. Limiting slide groove; 28. Internal partition. Detailed Implementation

[0039] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0040] Example 1

[0041] Reference Figure 1-7 The present invention provides a leakage detection device for deep foundation pit retaining structures, comprising a shell, a detection module, a fixing module and a sealing module.

[0042] The housing includes a detection cylinder shell 1, a threaded cylinder 2, and an internal partition 28. The internal partition 28 is located in the middle of the detection cylinder shell 1. The detection cylinder shell 1 is symmetrically arranged on both sides of the internal partition 28. The threaded cylinder 2 is symmetrically arranged at both ends of the detection cylinder shell 1. Both ends of the threaded cylinder 2 are threaded and are threaded to the detection cylinder shell 1. A battery module is installed inside the detection cylinder shell 1 to supply power to the data transceiver device 3, the osmotic pressure detection device 4, and the water level detector 14.

[0043] The detection module includes a data transceiver 3, an osmotic pressure detection device 4, and a water volume detector 14. The data transceiver 3 and the osmotic pressure detection device 4 are respectively threaded to both ends of the housing. The data transceiver 3 is threaded to the threaded cylinder 2 at the head of the housing, and the osmotic pressure detection device 4 is threaded to the threaded cylinder 2 at the tail of the housing. A through hole is provided at the center of the internal partition 28, and an installation groove 13 is provided on the side wall of the hole. The water volume detector 14 is installed in the installation groove 13.

[0044] The fixing module includes a bidirectional lead screw 7, a movable disk 15, a trapezoidal locking block 17, and a limiting block 18. Both ends of the bidirectional lead screw 7 are threadedly fitted with the movable disk 15. The head end face of the bidirectional lead screw 7 is provided with an internal hexagonal screw hole 8. The outer arc surface of the movable disk 15 is provided with two limiting sliders 26, which are located at both ends of the diameter of the movable disk 15. The inner side of the detection cylinder shell 1 is provided with limiting grooves 27 corresponding to the positions of the limiting sliders 26. The movable disk 15 is slidably connected to the detection cylinder shell 1 through the limiting sliders 26 and the limiting grooves 27. Multiple slides 5 are arrayed on the detection cylinder shell 1, and the slides 5 are symmetrically arranged at both ends of the detection cylinder shell 1. Assume that the slide 5 is provided with limit blocks 18 on both ends of the detection cylinder shell 1, and multiple limit grooves 16 are arrayed on the outer arc surface of the moving disk 15. The limit grooves 16 correspond to the positions of the slide 5. Each limit groove 16 is rotatably connected to a trapezoidal block 17 through a spring hinge. The trapezoidal block 17 slides in the slide 5. When the trapezoidal block 17 is located at the outer end of the slide 5, it is in a retracted state under the obstruction of the limit block 18. When the bidirectional screw 7 rotates, the moving disks 15 on both sides move towards the middle position of the bidirectional screw 7. At this time, the trapezoidal block 17 gradually leaves the obstruction of the limit block 18, gradually stands up and unfolds, and moves along the slide 5 towards the middle position.

[0045] The sealing module includes an outer sealing assembly and an inner sealing assembly. The outer sealing assembly includes an annular platform 9, an outer rubber ring 10, a circular ring 11, a guide block 12, a push screw 19, a push plate 20, and a support ring frame 25. The annular platform 9 is fixedly connected to the middle position of the outer side of the detection cylinder shell 1. The circular ring 11 is sleeved on the outer side of the detection cylinder shell 1 near the data transceiver device 3. The inner arc surface of the circular ring 11 is provided with multiple guide blocks 12. The positions of the guide blocks 12 correspond to the slide rails 5. The circular ring 11 is slidably connected to the detection cylinder shell 1 through the guide blocks 12 and the slide rails 5. The side of the annular platform 9 near the data transceiver device 3 is fixedly connected to the side of the outer rubber ring 10. The other side of the outer rubber ring 10 is fixedly connected to the side of the ring 11. The outer rubber ring 10 bulges slightly outward. The push screw 19 is threadedly engaged with the support ring frame 25. The support ring frame 25 is fixedly connected to the end face of the movable disk 15 near the data transceiver 3. The push screw 19 passes through the movable disk 15. The tail of the push screw 19 is rotatably connected to the push plate 20. The head end face of the push screw 19 is provided with an internal hexagonal screw hole 8. When the push screw 19 pushes the push plate 20 into the internal partition 28, the push plate 20 pushes the guide block 12 to move the ring 11 towards the ring platform 9, causing the outer rubber ring 10 to bulge and make close contact with the hole wall of the mounting hole on the enclosure structure 6.

[0046] The inner sealing assembly includes a guide rod 21, a slip ring 22, and an inner rubber ring 23. The guide rod 21 is fixedly connected to the side of the inner partition 28 facing the data transceiver 3. The slip ring 22 is slidably connected to the guide rod 21. The inner rubber ring 23 is installed between the slip ring 22 and the inner partition 28. The movable disk 15 near the data transceiver 3 has multiple threaded holes 24. After the outer sealing assembly has completed the sealing work, bolts are screwed into the threaded holes 24. The tail of the bolt pushes against the slip ring 22 and moves towards the inner partition 28, causing the inner rubber ring 23 to bulge inward and make tight contact with the middle unthreaded section of the bidirectional lead screw 7.

[0047] Example 2

[0048] Based on Example 1, the method of using a leakage detection device for deep foundation pit retaining structures is as follows:

[0049] Installation holes are made on the retaining structure 6, extending into the soil layer, with a larger diameter inside the soil layer.

[0050] Insert the device into the mounting hole with the tail of the invention facing the soil layer, so that the osmotic pressure detection device 4 comes into contact with the soil layer, and the data transceiver device 3 is located on the outside of the retaining structure 6.

[0051] At this point, remove the data transceiver device 3, and turn the internal hexagonal screw hole 8 on the head end face of the bidirectional lead screw 7 with a hex wrench to make the bidirectional lead screw 7 rotate. The moving disks 15 at both ends move towards the internal partition 28 at the same time, and the trapezoidal locking blocks 17 slide in the slide rail 5. When the trapezoidal locking blocks 17 move out of the limiting range of the limiting block 18, each trapezoidal locking block 17 stands up under the action of the spring hinge. The trapezoidal locking blocks 17 move towards the enclosure structure 6 with the movement of the moving disks 15 until the trapezoidal locking blocks 17 on both sides lock the enclosure structure 6 together, fixing the device in a stable position.

[0052] By turning the internal hexagonal hole 8 on the head end face of the push screw 19 with a hex wrench, the push screw 19 pushes the push plate 20 forward toward the internal partition 28. The push plate 20 presses against the guide block 12, and the push plate 20 pushes the ring 11 toward the ring platform 9 through the guide block 12. At this time, the outer rubber ring 10 bulges up and fits tightly against the wall of the mounting hole on the enclosure structure 6, thus achieving a seal between the outer side of the detection cylinder shell 1 and the inner wall of the round hole.

[0053] A bolt is screwed into the threaded hole 24 on the movable disk 15. The end face of the bolt presses against the slip ring 22. The end face of the bolt pushes the slip ring 22 to move along the guide rod 21 toward the inner partition 28, so that the inner rubber ring 23 bulges inward and fits tightly with the unthreaded area in the middle section of the bidirectional screw 7, thus achieving a seal between the cavities on both sides.

[0054] After fixing and sealing are completed, the data transceiver 3 is connected to the power supply and installed on the threaded cylinder 2 at the head of the detection cylinder shell 1.

[0055] At this time, the osmotic pressure detection device 4 detects the changes in water content at various points in the soil layer in real time, transmits the data to the data transceiver device 3, and then transmits it to the control terminal for data analysis.

[0056] When leakage occurs, the water volume detector 14 installed on the inner wall of the detection cylinder 1 will detect the amount of water leaking between the bidirectional screw 7 and the inner wall of the detection cylinder 1. By detecting the change in water content at various points in the soil layer through the osmotic pressure detection device 4, the location of the leakage can be found in time, thus improving the accuracy of leakage detection.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the invention and is not intended to limit the invention. Although the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A leakage detection device for deep foundation pit retaining structures, comprising a housing and a detection module, characterized in that: It also includes a fixing module and a sealing module. The housing includes a detection cylinder shell (1) and a threaded cylinder (2). An internal partition (28) is provided in the middle of the axial interior of the detection cylinder shell (1). Threaded cylinders (2) are fixedly connected to both ends of the detection cylinder shell (1). The end face of the detection cylinder shell (1) is fixedly connected to the tail end face of the threaded cylinder (2). The head of the threaded cylinder (2) is provided with threads. The fixing module includes a bidirectional lead screw (7), a movable disk (15), and trapezoidal locking blocks (17). The movable disk (15) is slidably connected to the inner wall of the detection cylinder (1). The movable disks (15) are symmetrically arranged on both sides of the internal partition (28). The movable disks (15) on both sides are threadedly engaged with the threaded portions of the bidirectional lead screw (7) in opposite directions at both ends. The trapezoidal locking blocks (17) are arranged in an array on the outer arc surface of the movable disks (15). The detection cylinder (1) is provided with axially arrayed slide rails (5). The trapezoidal locking blocks (17) are slidably engaged with the slide rails (5).

2. The leakage detection device for deep foundation pit retaining structures according to claim 1, characterized in that: The detection module includes a data transceiver (3), an osmotic pressure detection device (4), and a water volume detector (14). The data transceiver (3) is threadedly connected to the threaded cylinder (2) at the head of the detection shell (1). The osmotic pressure detection device (4) is threadedly connected to the threaded cylinder (2) at the tail of the detection shell (1). The water volume detector (14) is mounted on the internal partition (28).

3. The leakage detection device for deep foundation pit retaining structures according to claim 1, characterized in that: Limiting grooves (16) are arrayed on the outer arc surface of the movable disk (15). The trapezoidal block (17) is rotatably connected to the limiting groove (16) through a spring hinge. Limiting blocks (18) are fixedly connected to the end faces of the slide (5) near both ends.

4. The leakage detection device for deep foundation pit retaining structures according to claim 2, characterized in that: The sealing module includes an outer sealing component and an inner sealing component.

5. The leakage detection device for deep foundation pit retaining structures according to claim 4, characterized in that: The outer sealing assembly includes an annular platform (9), an outer rubber ring (10), a circular ring (11), a guide block (12), and a pushing assembly. The annular platform (9) is provided at the axial center position of the outer side of the detection cylinder shell (1). The circular ring (11) is sleeved on the outer arc surface of the detection cylinder shell (1) on the side closer to the head. The guide block (12) is arranged in an array on the inner arc surface of the circular ring (11). The guide block (12) slides with the slide (5). The outer rubber ring (10) is disposed between the annular platform (9) and the circular ring (11).

6. The leakage detection device for deep foundation pit retaining structures according to claim 4, characterized in that: The inner sealing component includes a guide rod (21), a slip ring (22), and an inner rubber ring (23). The tail of the guide rod (21) is fixedly connected to the side of the internal partition (28) that is close to the data transceiver device (3). The slip ring (22) is slidably engaged with the guide rod (21). The inner rubber ring (23) is disposed between the slip ring (22) and the internal partition (28).

7. The leakage detection device for deep foundation pit retaining structures according to claim 5, characterized in that: The pushing assembly includes a pushing screw (19) and a pushing plate (20). A support ring frame (25) is fixedly connected to the side of the movable disk (15) near the head of the detection cylinder (1). The pushing screw (19) is threadedly engaged with the support ring frame (25). The tail of the pushing screw (19) passes through the movable disk (15) and extends from the side near the internal partition (28). The tail of the pushing screw (19) is rotatably connected to the pushing plate (20).

8. The leakage detection device for deep foundation pit retaining structures according to claim 6, characterized in that: A through threaded hole (24) is opened on the movable disk (15) near the data transceiver (3), and a bolt for pushing the slip ring (22) is fitted inside the threaded hole (24).

9. The leakage detection device for deep foundation pit retaining structures according to claim 7, characterized in that: The head end face of the bidirectional lead screw (7) is provided with a screwing hole, and the head end face of the push screw (19) is provided with a screwing hole.

10. The method of using a deep foundation pit retaining structure leakage detection device according to any one of claims 1 to 9, characterized in that: Includes the following steps: S1. Install holes are made on the retaining structure (6), and the installation holes extend into the soil layer. The diameter of the installation holes in the soil layer is larger. S2. Insert the device into the installation hole with the tail facing the soil layer, so that the osmotic pressure detection device (4) is in contact with the soil layer; S3. Remove the data transceiver device (3), and rotate the bidirectional screw (7) by turning the hole until the trapezoidal blocks (17) on both sides of the enclosure structure (6) clamp the enclosure structure (6). S4. By turning the screw (19) through the screw hole, the ring (11) is pushed to move towards the ring platform (9) until the outer rubber ring (10) bulges up and fits tightly against the wall of the mounting hole; S5. Screw the bolt into the threaded hole (24). The tail of the bolt passes through the moving plate (15) and presses against the slip ring (22). Push the slip ring (22) along the guide rod (21) to move towards the inner partition (28) until the inner rubber ring (23) bulges inward and fits tightly against the unthreaded part of the middle section of the double-acting screw (7). S6. Install the data transceiver (3) and supply power to the detection module; S7. The osmotic pressure detection device (4) detects the water content and other data in the soil layer in real time and transmits the data to the data transceiver device (3). The data transceiver device (3) processes and transmits the data. S8. When leakage occurs, the water volume detector (14) detects the amount of water that has seeped in. After the data transceiver (3) processes the data from the osmotic pressure detection device (4) and the water volume detector (14), the location of the leakage is found.

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