Full-face anti-leakage steel lock joint underground continuous wall structure and construction method

Abstract

The application relates to a full-section anti-seepage steel lock joint underground continuous wall structure and a construction method, wherein the full-section anti-seepage steel lock joint underground continuous wall structure comprises a first wall body and a second wall body; a first lock member is arranged on the connecting side of the first wall body and the second wall body; an accommodating cavity is formed in the first lock member; a sealing medium is filled in the accommodating cavity; and a pressure monitoring element for monitoring the state of the sealing medium in the accommodating cavity is arranged on the first lock member; an initial sealing barrier is formed by pre-filling the sealing medium in the first lock member; a plurality of pouring channels and a grouting mechanism are arranged on the second lock member; the sealing medium can be supplemented into the first lock member in a directional manner; a waterproof film is coated on the outside of the wall body to form a wall body anti-seepage layer; the full-section anti-seepage protection of the underground continuous wall wall body and the joint is realized; and the seepage problem of the underground continuous wall is fundamentally solved.

Description

Technical Field

[0001] This invention relates to the field of diaphragm wall construction technology, specifically to a full-section anti-seepage steel interlocking joint diaphragm wall structure and construction method. Background Technology

[0002] As the main retaining structure of foundation pit engineering, the seepage prevention performance of the diaphragm wall and its joints directly affects the safety and durability of the foundation pit engineering. In the existing construction process of diaphragm walls, the joints between adjacent wall sections usually adopt traditional interlocking pipe joints or I-beam joints. These joint types are prone to problems such as mud inclusion and concrete flow around during the concrete pouring process, resulting in the formation of leakage channels at the joints.

[0003] In addition, the underground continuous wall itself is prone to micro-cracks due to factors such as concrete shrinkage and cold joints during construction, which can lead to water leakage problems. These leakage problems not only affect the construction safety of the foundation pit project, but also increase the cost of subsequent leak sealing and prolong the construction period.

[0004] Therefore, how to effectively solve the problem of full-section seepage prevention of underground continuous wall structures and joints is a technical challenge that urgently needs to be addressed in this field. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects of the prior art and provide a full-section anti-seepage steel interlocking joint underground continuous wall structure and construction method to solve the problem of leakage in the existing underground continuous wall.

[0006] To achieve the above objectives, the present invention provides a full-section leak-proof steel interlocking joint underground continuous wall structure, comprising: First wall and second wall; The first wall is provided with a first locking member on the side where it connects with the second wall. The first locking member has a receiving cavity inside, which is filled with a sealing medium. The first locking member is provided with a pressure monitoring element for monitoring the state of the sealing medium inside the receiving cavity. The second wall is provided with a second locking component on the side where it connects with the first wall, and the second locking component is inserted into and engaged with the first locking component; The second locking component is provided with multiple injection channels, which are used to replenish the sealing medium into the receiving cavity; The second locking component is also provided with a grouting mechanism, which can selectively connect with any injection channel to directionally replenish the sealing medium into the receiving cavity.

[0007] By adopting this technical solution, a receiving cavity is set inside the first locking component of the first wall and filled with sealing medium, while multiple injection channels and a movable grouting mechanism are set on the second locking component of the second wall, thus achieving seepage prevention at the joint. The sealing medium in the first locking component forms an initial sealing barrier, and the pressure monitoring element can monitor the filling status of the sealing medium in real time, providing data support for later maintenance. When the sealing medium is lost or not filled tightly for various reasons, the grouting mechanism can selectively connect with any injection channel to directionally replenish the sealing medium into the receiving cavity, thereby achieving active repair and long-term seepage prevention at the joint. This changes the traditional situation where underground continuous wall joints cannot be repaired once construction is completed, and significantly improves the seepage prevention performance of the underground continuous wall throughout its entire life cycle.

[0008] Furthermore, the first locking component is a C-type locking component, and its open side is provided with a destructible sealing plate; The second locking component is an O-type locking component, and its outer side is provided with an elastic sealing element for sealing the opening of the C-type locking component after insertion.

[0009] By adopting this technical solution, a destructible sealing plate is installed on the opening side of the C-type lock, which can effectively prevent mud from entering the lock during construction and avoid contamination or loss of the sealing medium. An elastic sealing element is installed on the outside of the O-type lock, which replaces the sealing plate to perform a sealing function when inserted, ensuring that the opening of the C-type lock is always sealed and preventing the sealing medium from overflowing. The combination of C-type and O-type locks is simple to process and reliable to insert, which not only ensures construction efficiency but also ensures the long-term sealing performance of the joint.

[0010] Furthermore, both the first wall and the second wall include a steel reinforcement cage, and the steel reinforcement cage has a steel section fixedly installed at its end where it connects to the adjacent wall. Among them, the steel profile fixedly connected to the second locking member is an open steel profile, and the steel profile fixedly connected to the first locking member is a solid steel profile; When the first locking member and the second locking member are inserted and engaged, the solid steel, the perforated steel, and the first and second locking members that are inserted and engaged together form a grouting space.

[0011] By adopting this technical solution, through the cooperation of solid steel and perforated steel, when the C-type lock and O-type lock are plugged in, the solid steel, perforated steel and plugged lock together enclose the grouting space. When pouring concrete later, the concrete slurry can flow into the grouting space through the flow holes on the perforated steel, ensuring that the concrete in the joint area is filled densely, and at the same time, the filling of concrete improves the seepage prevention effect at this location.

[0012] Furthermore, the grouting mechanism includes a grouting pipe assembly, the grouting pipe assembly comprising: A grouting branch pipe movable along the interior of the second locking member; and a deployable sealing member disposed at the lower part of the grouting branch pipe, the deployable sealing member being used to seal the interior space of the second locking member during grouting, so as to guide the sealing medium into the sealing medium receiving cavity of the first locking member through the grouting channel.

[0013] By adopting this technical solution, the grouting pipe can move along the inside of the second locking component, enabling it to accurately locate the grouting channel that needs to be grouted. The deployable sealing component unfolds during grouting, sealing the internal space of the second locking component and preventing the injected sealing medium from leaking out along the inside of the second locking component. This ensures that all the sealing medium flows into the receiving cavity of the first locking component through the target grouting channel, guaranteeing the accuracy of the grouting process and avoiding waste of the sealing medium.

[0014] Furthermore, the deployable sealing component includes: Drive unit; The transmission mechanism is connected to the drive unit in a transmission manner; A foldable frame structure is connected to the transmission mechanism, and the foldable frame structure is covered with a sealing material; The drive unit drives the transmission mechanism to move, so that the foldable skeleton structure switches between a folded state and an unfolded state.

[0015] By adopting this technical solution, the drive unit drives the transmission mechanism to switch between folded and unfolded states, enabling the controllable unfolding and retraction of the sealing components. The design is compact, maintaining the folded state when not in use, without occupying the internal space of the lock; and can be quickly unfolded to form an effective seal when in use, ensuring both grouting effect and ease of construction operation.

[0016] Furthermore, the foldable skeleton structure includes: A first central rod and a second central rod, wherein the first central rod is connected to the transmission mechanism and can slide relative to the second central rod; Multiple radial struts, the upper ends of which are hinged to a directional sliding device fixed at the bottom of the transmission mechanism, the directional sliding device being able to slide along the second central rod; Multiple lower support rods, the upper end of each lower support rod is hinged to the middle of the corresponding radial support rod, and the lower end is hinged to the lower end of the second central rod; The sealing material is fixed to the radial support rod.

[0017] By adopting this technical solution, the stable unfolding and folding of the skeleton structure is achieved through the hinged linkage of the first central rod, the second central rod, the directional sliding device, the radial support rods and the lower support rods. After unfolding, the radial support rods form an umbrella-shaped support structure, and the sealing material covering it can effectively seal the internal space of the second locking component, which not only ensures the sealing effect, but also has good reusability.

[0018] Furthermore, the outer sides of both the first wall and the second wall are covered with a waterproof membrane. The waterproof membrane is fixedly connected to the skeleton structure of the first wall and the second wall by fasteners, and the waterproof membrane is provided with a stress-relieving deformation structure.

[0019] By adopting this technical solution, by covering the outside of the wall with a waterproof membrane and setting up a stress-relieving deformation structure, the wall itself is made waterproof across its entire cross section. The waterproof membrane acts as a physical barrier, effectively blocking groundwater infiltration. The deformation structure can release stress when the concrete pouring pressure is too high, preventing the waterproof membrane from being torn and ensuring its integrity and effectiveness.

[0020] Furthermore, the deformable structure is a fold formed by the waterproof membrane itself, and the fold is kept in a folded state by a detachable temporary fixing clip; When the concrete pouring pressure exceeds a preset threshold, the temporary fixing clamp automatically disengages, and the folds unfold to release the membrane stress.

[0021] By adopting this technical solution, the deformation structure is set as folds formed by the waterproof membrane itself, and the folded state is maintained by a detachable temporary fixing clip. When the concrete pouring pressure exceeds the preset threshold, the temporary fixing clip automatically detaches, the folds unfold, the surface area of ​​the waterproof membrane increases, thereby reducing the stress of the membrane material. It can automatically adapt to pressure changes without manual intervention, which not only ensures the integrity of the waterproof membrane during construction, but also ensures the effective coverage of the waterproof membrane after the wall is completed.

[0022] This invention also provides a construction method for a full-section anti-seepage steel interlocking joint underground continuous wall structure, comprising the following steps: S1. Process the steel reinforcement skeleton of the first wall, and connect the first locking component with the internal pre-filled sealing medium and pressure monitoring element on its connection side; S2. Place the steel reinforcement cage of the first wall into the groove and pour concrete to form the first wall; S3. Process the steel reinforcement skeleton of the second wall and connect the second locking component with an internal grouting mechanism and multiple external grouting channels on its connecting side; S4. Place the steel reinforcement cage of the second wall into the adjacent groove section, and make the second locking component and the first locking component plug and match. S5. Pour the concrete for the second wall; S6. Determine the filling status of the sealing medium inside the first locking component based on the monitoring data of the pressure monitoring element; S7. If the monitoring data indicates that the sealing medium is not filled densely, the grouting mechanism is controlled to move to the corresponding grouting channel position that is not filled densely, and the sealing medium is added to the first locking component through the grouting channel until the monitoring data reaches the preset stable state.

[0023] Furthermore, in step S7, when replenishing the sealing medium through the grouting mechanism, the following sub-steps are also included: S71. The deployable sealing component of the grouting mechanism is controlled to deploy inside the second locking component to seal the internal space of the second locking component; S72. The sealing medium is injected through the grouting pipe, and the sealing medium is guided through the expandable sealing component to flow from the target injection channel into the receiving cavity of the first locking component. S73. After grouting is completed, control the unfoldable sealing component to fold and reset, and move the grouting mechanism out of the grouting area.

[0024] Compared with the prior art, the present invention has the following advantages: 1. By pre-filling the sealing medium in the first locking component to form an initial sealing barrier, and at the same time covering the outside of the wall with a waterproof membrane to form a waterproof layer, the entire cross-section of the underground continuous wall and its joints is protected against seepage, thus fundamentally solving the leakage problem of the underground continuous wall.

[0025] 2. The pressure monitoring element can monitor the status of the sealing medium in real time. When the sealing medium is lost or not filled, the grouting mechanism can replenish the sealing medium into the cavity through the grouting channel, realizing active repair and long-term seepage prevention of the joint. This changes the status quo that traditional underground continuous wall joints cannot be repaired once construction is completed.

[0026] 3. The folds on the waterproof membrane are kept folded by temporary fixing clips. When the concrete pouring pressure is too high, the temporary fixing clips will automatically detach, the folds will unfold and release the stress of the membrane. It can automatically adapt to pressure changes without manual intervention, which not only ensures the integrity of the waterproof membrane during construction, but also ensures the effective coverage of the waterproof membrane after the wall is completed.

[0027] 4. The grouting mechanism can selectively connect with any grouting channel inside the second locking component. The expandable sealing component expands to seal the internal space during grouting, guiding all the sealing medium into the receiving cavity of the first locking component through the selected grouting channel, achieving directional replenishment. This avoids waste of sealing medium and achieves directional seepage prevention.

[0028] 5. The component design is reasonable. The C-type and O-type locking buckles are easy to connect and process. The expandable sealing component does not occupy the internal space of the locking buckle when not in use. The overall structure is compact and the construction operation is convenient. It has good promotion and application value. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the first wall structure in the full-section anti-seepage steel interlocking joint underground continuous wall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the first wall and the second wall in the underground continuous wall structure with a full-section anti-seepage steel interlocking joint according to the present invention. Figure 3 This is a schematic diagram of the bottom connection structure of the waterproof membrane in the underground continuous wall structure with the full-section anti-seepage steel interlocking joint of the present invention; Figure 4 This is a schematic diagram of the grouting mechanism in the underground continuous wall structure with a full-section anti-seepage steel interlocking joint according to the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the unfolded foldable frame structure in the underground continuous wall structure with full-section anti-seepage steel interlocking joint of the present invention.

[0030] Explanation of reference numerals in the attached drawings: 1. First wall; 2. Second wall; 3. Reinforcing steel frame; 4. Solid steel section; 5. Perforated steel section; 7. First locking component; 8. Pressure monitoring element; 9. Sealing plate; 10. Sealing medium; 11. Second locking component; 12. Elastic sealant; 13. Injection channel; 14. Grouting mechanism; 15. Waterproof membrane; 16. Fixing component; 17. Temporary fixing clamp; 18. Angle steel; 20. Baffle branch pipe; 21. Grouting branch pipe; 22. Threaded sleeve; 23. Deployable sealing component; 231. Drive unit; 232. Transmission mechanism; 233. Embedded hole; 234. Foldable frame structure; 234a. First central rod; 234b. Second central rod; 234c. Directional sliding device; 234d. Radial support rod; 234e. Lower support rod; 234g. Sealing material. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1-3 As shown, the present invention provides a full-section anti-seepage steel interlocking joint underground continuous wall structure, including an initial section underground continuous wall (i.e., the first wall 1) and a later section underground continuous wall (i.e., the second wall 2); both the initial section underground continuous wall and the later section underground continuous wall are reinforced concrete wall structures, and the two are alternately set to form a continuous underground retaining wall.

[0033] The initial section of the diaphragm wall includes a steel reinforcement cage 3. Solid steel sections 4 and perforated steel sections 5 are fixedly welded to both ends of the steel reinforcement cage 3. C-type locks (i.e., the first lock component 7) are fixedly welded to the solid steel sections 4, and O-type locks (i.e., the second lock component 11) are fixedly welded to the perforated steel sections 5. The C-type latch has an internal cavity filled with water-stopping sealing grease (i.e., sealing medium 10). A toothed sealing plate 9 is welded along the entire length of the open side of the C-type latch, and the bottom is closed. Pressure sensors (i.e., pressure monitoring elements 8) are installed along the entire length of the side wall of the C-type latch at certain intervals to monitor the filling status of the water-stopping sealing grease in the cavity.

[0034] The bottom of the O-ring is closed, and multiple unidirectional grouting channels 13 are set along the length of the side wall at certain intervals. An elastic sealing element 12 is set at the position of the O-ring near the opening of the C-ring to seal the opening of the C-ring after the O-ring and the C-ring are inserted to prevent the water-stop sealing grease from overflowing from the opening. The O-ring is equipped with a grouting pipe assembly (i.e., grouting mechanism 14).

[0035] The later section of the diaphragm wall has the same structure as the earlier section. When the later section of the diaphragm wall is set adjacent to the earlier section, the O-rings on the later section of the diaphragm wall are inserted into the C-rings on the earlier section of the diaphragm wall. During the insertion process, the O-rings break the sealing plate 9 at the opening of the C-rings, and the elastic sealing element 12 on the O-rings replaces the sealing plate 9 to perform the sealing function. At this time, the solid steel 4, the perforated steel 5, and the inserted C-rings and O-rings together enclose and form a grouting space (it should be noted that the prerequisite for forming the grouting space is that there is a matching structure consisting of at least two C-rings and O-rings between the connecting sides of the later section of the diaphragm wall and the earlier section of the diaphragm wall). When the later section of the diaphragm wall is poured with concrete, the concrete slurry can flow into the grouting space through the holes on the perforated steel 5 to ensure that the concrete in the joint area is filled densely.

[0036] like Figure 4-6 As shown, the grouting pipe assembly includes a baffle branch pipe 20 and a grouting branch pipe 21. A threaded sleeve 22 is connected to the lower end of the baffle branch pipe 20. An umbrella-shaped baffle (i.e., a deployable sealing component 23) is installed inside the threaded sleeve 22. The umbrella-shaped baffle consists of a wireless electric drive wheel (i.e., a drive unit 231), a threaded rod (i.e., a transmission mechanism 232), and a foldable frame structure 234. The foldable frame structure 234 includes a first central rod 234a, a second central rod 234b, a directional sliding device 234c, multiple radial support rods 234d, multiple lower support rods 234e, and sealing material 234g fixed to the radial support rods 234d. The threaded rod is threadedly connected to the inside of the threaded sleeve 22. The inside of the threaded rod is provided with a pre-embedded hole 233 corresponding to the first center rod 234a, and the first center rod 234a is fixed relative to the threaded rod through the pre-embedded hole 233. The first center rod 234a and the second center rod 234b are connected by a spring clip; The first central rod 234a can slide relative to the second central rod 234b. The directional sliding device 234c is fixedly connected to the lower end of the threaded rod. The upper ends of each radial support rod 234d are hinged to the directional sliding device 234c. The middle part of each radial support rod 234d is hinged to the upper end of the lower support rod 234e. The lower end of each lower support rod 234e is hinged to the lower end of the second central rod 234b.

[0037] When it is necessary to replenish the water-stop sealing grease into the C-type lock through the injection channel 13, the wireless electric drive wheel is activated to extend the threaded rod downwards, driving the first center rod 234a to press down the spring buckle between the first center rod 234a and the second center rod 234b. This causes the first center rod 234a and the directional sliding device 234c to slide downwards along the second center rod 234b, thereby pushing and opening the radial support rod 234d and the lower support rod 234e, allowing the foldable skeleton structure 234 to unfold. The unfolded foldable skeleton structure 234, together with the sealing material 234g on it, seals the internal space of the O-type lock, guiding the sealing medium from the injection channel 13 into the receiving cavity of the C-type lock. After the grouting is completed, the wireless electric drive wheel is activated in the opposite direction to retract the threaded rod upwards, thus folding up the foldable skeleton structure 234.

[0038] To prevent leakage in the diaphragm wall itself, a waterproof membrane 15 is wrapped around the outside and bottom of the steel reinforcement skeleton 3 of the initial and later sections of the diaphragm wall. The waterproof membrane 15 is fixedly connected to the steel profile and the angle steel 18 welded to the bottom by fasteners 16. The waterproof membrane 15 has pleats, and the pleats are fixed by detachable temporary fixing clips 17. When the concrete pouring pressure is too high, the temporary fixing clips 17 automatically detach, and the pleats unfold to release the stress of the membrane material.

[0039] In another preferred embodiment, the folds provided on the waterproof membrane 15 are secured by detachable clips, but are not limited to the temporary fixing clips 17 and clips described herein; any structure that can be used to fix the folds before the concrete pouring pressure becomes too high. This invention also provides a construction method for a full-section leak-proof steel interlocking joint diaphragm wall structure. Based on the conventional construction method of diaphragm walls, the main construction steps for a single-sided connection structure are as follows: S1. Process the steel reinforcement cage 3 of the initial section of the underground continuous wall, and connect the C-type lock with pre-filled water-stop sealing grease and pressure sensor on its connection side. S2. Place the steel reinforcement cage 3 of the initial section of the diaphragm wall into the trench and pour concrete to form the initial section of the diaphragm wall. S3, the steel reinforcement skeleton 3 of the post-processing underground continuous wall, and the O-type lock with an internal grouting mechanism and multiple external grouting channels connected on its connection side; S4. Place the steel reinforcement cage 3 of the later section of the underground continuous wall into the adjacent trench section, and make the O-type locking component and the C-type locking component plug and match. S5. Concrete for the later stage of the underground continuous wall; S6. Determine the filling status of the water-stop sealing grease inside the C-type lock based on the monitoring data of the pressure sensor. S7. If the monitoring data indicates that the water-stop sealing grease is not filled tightly at a certain location, the grouting pipe assembly is controlled to move to the corresponding grouting channel 13 position that is not filled tightly, and water-stop sealing grease is added to the C-type lock through the grouting channel 13 until the monitoring data reaches the preset stable state.

[0040] When replenishing the water-stop sealing grease through the grouting pipe assembly, the following sub-steps are also included: S71, The deployable sealing component 23 of the grouting pipe assembly deploys inside the O-ring to seal the internal space of the O-ring; S72. Inject water-stop sealing grease through the grouting pipe 21, so that the water-stop sealing grease is guided through the expandable sealing component 23 and flows from the grouting channel 13 into the receiving cavity of the C-type lock. S73. After grouting is completed, control the unfoldable sealing component 23 to fold and reset, and move the grouting pipe assembly out of the grouting area.

[0041] The above describes the construction of two adjacent diaphragm walls. In the case of continuous construction of diaphragm walls, in order to facilitate the construction of the next diaphragm wall, the later diaphragm wall will be connected to a C-type locking buckle on the other side during step S3. This will provide a connection position for the earlier diaphragm wall when the next diaphragm wall is constructed, and so on to achieve continuous construction of diaphragm walls. The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A full-section leak-proof steel interlocking joint underground continuous wall structure, characterized in that, include: First wall and second wall; The first wall is provided with a first locking member on the side where it connects with the second wall. The first locking member has a receiving cavity inside, which is filled with a sealing medium. The first locking member is provided with a pressure monitoring element for monitoring the state of the sealing medium inside the receiving cavity. The second wall is provided with a second locking component on the side where it connects with the first wall, and the second locking component is inserted into and engaged with the first locking component; The second locking component is provided with multiple injection channels, which are used to replenish the sealing medium into the receiving cavity; The second locking component is also provided with a grouting mechanism, which can selectively connect with any injection channel to directionally replenish the sealing medium into the receiving cavity; The grouting mechanism includes a grouting pipe assembly, which includes: A grouting branch pipe that can move along the inside of the second locking member; And a deployable sealing member disposed at the lower part of the grouting branch pipe, the deployable sealing member being used to seal the internal space of the second locking member during grouting, so as to guide the sealing medium into the sealing medium receiving cavity of the first locking member through the grouting channel.

2. The full-section anti-seepage steel interlocking joint underground continuous wall structure according to claim 1, characterized in that, The first locking component is a C-type locking component, and its open side is provided with a destructible sealing plate; The second locking component is an O-type locking component, and its outer side is provided with an elastic sealing element for sealing the opening of the C-type locking component after insertion.

3. The full-section anti-seepage steel interlocking joint underground continuous wall structure according to claim 1, characterized in that, Both the first wall and the second wall include a steel reinforcement cage, and the steel reinforcement cage has a steel section fixedly installed at its end where it connects to the adjacent wall; Among them, the steel profile fixedly connected to the second locking member is an open steel profile, and the steel profile fixedly connected to the first locking member is a solid steel profile; When the first locking member and the second locking member are inserted and engaged, the solid steel, the perforated steel, and the first and second locking members that are inserted and engaged together form a grouting space.

4. The full-section anti-seepage steel interlocking joint underground continuous wall structure according to claim 1, characterized in that, The deployable sealing component includes: Drive unit; The transmission mechanism is connected to the drive unit in a transmission manner; A foldable frame structure is connected to the transmission mechanism, and the foldable frame structure is covered with sealing material; The drive unit drives the transmission mechanism to move, so that the foldable skeleton structure switches between a folded state and an unfolded state.

5. The full-section anti-seepage steel interlocking joint underground continuous wall structure according to claim 4, characterized in that, The foldable skeleton structure includes: A first central rod and a second central rod, wherein the first central rod is connected to the transmission mechanism and can slide relative to the second central rod; Multiple radial struts, the upper ends of which are hinged to a directional sliding device fixed at the bottom of the transmission mechanism, the directional sliding device being able to slide along the second central rod; Multiple lower support rods, the upper end of each lower support rod is hinged to the middle of the corresponding radial support rod, and the lower end is hinged to the lower end of the second central rod; The sealing material is fixed to the radial support rod.

6. The full-section anti-seepage steel interlocking joint underground continuous wall structure according to claim 1, characterized in that, The outer sides of both the first wall and the second wall are covered with a waterproof membrane. The waterproof membrane is fixedly connected to the skeleton structure of the first wall and the second wall by fasteners, and the waterproof membrane is provided with a stress-relieving deformation structure.

7. The full-section anti-seepage steel interlocking joint underground continuous wall structure according to claim 6, characterized in that, The deformable structure is a fold formed by the waterproof membrane itself, and the fold is kept in a folded state by a detachable temporary fixing clip; When the concrete pouring pressure exceeds a preset threshold, the temporary fixing clamp automatically disengages, and the folds unfold to release the membrane stress.

8. A construction method for a full-section anti-seepage steel interlocking joint underground continuous wall structure as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Process the steel reinforcement skeleton of the first wall, and connect the first locking component with the internal pre-filled sealing medium and pressure monitoring element on its connection side; S2. Place the steel reinforcement cage of the first wall into the groove and pour concrete to form the first wall; S3. Process the steel reinforcement skeleton of the second wall and connect the second locking component with an internal grouting mechanism and multiple external grouting channels on its connecting side; S4. Place the steel reinforcement cage of the second wall into the adjacent groove section, and make the second locking component and the first locking component plug and match. S5. Pour the concrete for the second wall; S6. Determine the filling status of the sealing medium inside the first locking component based on the monitoring data of the pressure monitoring element; S7. If the monitoring data indicates that the sealing medium is not filled densely, the grouting mechanism is controlled to move to the corresponding grouting channel position that is not filled densely, and the sealing medium is added to the first locking component through the grouting channel until the monitoring data reaches the preset stable state.

9. The construction method of the full-section anti-seepage steel interlocking joint underground continuous wall structure according to claim 8, characterized in that, In step S7, when replenishing the sealing medium through the grouting mechanism, the following sub-steps are also included: S71. The deployable sealing component of the grouting mechanism is controlled to deploy inside the second locking component to seal the internal space of the second locking component; S72. The sealing medium is injected through the grouting pipe, and the sealing medium is guided through the expandable sealing component and flows from the injection channel into the receiving cavity of the first locking component. S73. After grouting is completed, control the unfoldable sealing component to fold and reset, and move the grouting mechanism out of the grouting area.

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