An embedded anchor system for a vertical cutoff wall
By introducing stress-regulating chambers, thixotropic grout, and elastic buffer layers into the embedded anchor cable system of the cutoff wall, the problems of deformation coordination and anchor cable connection of traditional cutoff walls are solved, achieving adaptive adjustment and automatic repair, and improving seepage prevention performance and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA ANENG GRP FIRST ENG BUREAU CO LTD
- Filing Date
- 2026-05-18
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional vertical cutoff walls are poor in terms of deformation coordination and stress self-adjustment capabilities. The connection between the anchor cable and the wall is prone to loosening, and there is a lack of effective buffer adjustment mechanism, which leads to a decline in seepage prevention performance.
The system employs stress-regulating chambers and deformable partitions within a plastic concrete impermeable wall, combined with thixotropic self-healing grout and connecting pipes. An elastic buffer layer and pre-embedded anchor sleeves are installed in the anchor cable structure, and rapid installation and sealing are achieved using spiral guide grooves and sealing rings.
It improves the deformation adaptability and durability of the cutoff wall, enhances the load-bearing capacity and connection reliability of the anchor cable, prevents stress concentration, realizes adaptive adjustment and automatic repair, and improves the seepage prevention performance.
Smart Images
Figure CN122485244A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of slope protection, and more particularly to an embedded anchor cable system for a vertical protective seepage barrier wall. Background Technology
[0002] Vertical cut-off walls are widely used in water conservancy projects, deep foundation pit support, and mine slope protection as important structures for blocking groundwater seepage and maintaining structural stability. Traditional cutoff walls are mostly constructed using rigid concrete or high-pressure jet grouting piles. While these walls offer high rigidity, they suffer from poor deformation compatibility. When uneven settlement occurs in the foundation or under significant lateral earth pressure, stress concentration can easily occur, leading to cracking and leakage. Furthermore, while embedded anchor cable reinforcement systems provide active support, the connection points between the anchor cables and the wall often become weak points in the seepage prevention system. Conventional grouting anchoring methods are prone to loosening under long-term stress and groundwater erosion, and water can accumulate in the anchor holes, affecting grouting quality. In addition, the lack of an effective buffering and adjustment mechanism between the anchor plate and the surrounding medium during anchor cable stress can easily cause stress concentration and induce localized wall failure when local loads suddenly increase. Therefore, there is an urgent need for a method that can maintain the seepage prevention performance of vertical protective cutoff walls and embedded anchor cable systems while improving the deformation adaptability, stress self-regulation ability, and reliable sealing performance of the connection points. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this invention provides an embedded anchor cable system for vertical protective seepage-proof walls, which solves the above problems.
[0004] To achieve the above objectives, the present invention provides the following technical solution: an embedded anchor cable system for a vertical protective seepage barrier wall, comprising a seepage barrier wall body and an anchor cable structure penetrating the wall body. The seepage barrier wall body is formed by casting plastic concrete and has several stress-adjusting chambers arranged in layers along the height direction of the wall body. Each stress-adjusting chamber is connected to the main structure of the seepage barrier wall body through a deformable partition. The stress-adjusting chambers are filled with thixotropic self-healing grout. The stress-adjusting chambers are interconnected through a connecting pipe, and a one-way valve is provided in the connecting pipe. The anchor cable structure includes steel strands and multiple bearing plates arranged at intervals along the axial direction of the steel strands. An elastic buffer layer is provided between the bearing plates. The elastic buffer layer consists of an outer fiber braided sleeve and an inner elastomer. An embedded anchor sleeve is provided at the joint between the seepage barrier wall and the anchor cable structure. The inner wall of the embedded anchor sleeve is provided with a spiral guide groove. The anchoring end of the anchor cable structure is provided with a guide protrusion that cooperates with the spiral guide groove. An annular sealing ring is provided between the outer wall of the embedded anchor sleeve and the seepage barrier wall.
[0005] Preferably, the stress-adjusting chamber has a flat elliptical cross-section, and the major axis of the ellipse is perpendicular to the stress direction of the impermeable wall. The thickness of the deformable partition is distributed along the major axis in a state of being thinner in the middle and thicker at both ends, with the thickness of the middle region being one-half to one-third of the thickness of the two end regions.
[0006] Preferably, the connection between the deformable partition and the main structure of the seepage-proof wall is reinforced with flexible anchor bars, which are arranged in a wave shape and pre-embedded in the concrete of the seepage-proof wall.
[0007] Preferably, the inner elastomer is a shape memory polymer, which is composed of polycaprolactone-based thermoplastic polyurethane and organic modified aluminosilicate clay in a mass ratio of 100:3~5.
[0008] Preferably, the diameter of the connecting pipe is proportional to the square root of the chamber volume; the one-way valve is a flexible membrane structure made of silicone rubber material and has a cross-shaped cut at the center, which automatically opens when the pressure difference reaches 0.05MPa; the connecting pipe is arranged in a zigzag pattern within the seepage barrier wall to avoid forming a straight seepage channel.
[0009] Preferably, the edge of the bearing plate is provided with an annular boss, which forms a limiting fit with the inner wall of the elastic buffer layer to prevent the buffer layer from expanding radially when compressed; the annular boss of the bearing plate is provided with a plurality of evenly distributed pressure relief holes, and a flow limiting plug is provided in the pressure relief hole. The flow limiting plug is made of porous ceramic material with a porosity of 40% to 60%. When the compression of the elastic buffer layer exceeds 30% of its thickness, the inner layer of elastomer in the opening part of the pressure relief hole is squeezed outward to form a secondary buffer layer.
[0010] Preferably, the outer fiber braided sleeve is fixed at the edge of the bearing plate by a prestressed ring hoop, and the spacing between the bearing plates varies in a gradient along the anchor cable axis, with a larger spacing between the bearing plates near the free section and a smaller spacing between the bearing plates near the anchoring section, with a spacing ratio of 2:1 to 3:1.
[0011] Preferably, the outer surface of the seepage barrier wall is provided with a plurality of monitoring embedded parts arranged at intervals along the height direction. Each monitoring embedded part includes a strain sensor and a displacement sensor. The strain sensor is connected to the wall structure through embedded steel bars, and the measuring end of the displacement sensor extends out of the surface of the seepage barrier wall. The monitoring embedded part is connected to the data acquisition system through a waterproof cable, and a prestress sensor is installed on each steel strand of the anchor cable structure.
[0012] Preferably, the spiral guide groove includes three regions: an inlet section, a transition section, and a locking section. The spiral helix angle of the inlet section is 15°~20° to facilitate the smooth entry of the anchor cable head. The spiral helix angle of the transition section gradually decreases to 5°~10°. The spiral helix angle of the locking section is less than 5° and has a barb structure at the end to prevent the anchor cable from reversing. The guide protrusion is a telescopic structure, consisting of a spring-loaded slider and a housing. When the anchor cable rotates to the locking section, the slider pops out under the action of the spring and engages with the barb structure of the guide groove.
[0013] Preferably, the outer wall of the pre-embedded anchor sleeve is provided with a threaded section, which cooperates with the threaded sleeve pre-embedded in the wall. By rotating the pre-embedded anchor sleeve, the radial position of the anchor cable in the seepage-proof wall can be finely adjusted. The annular sealing ring is set in the annular groove between the pre-embedded anchor sleeve and the threaded sleeve. During the expansion process, the annular sealing ring generates a radial pressing force on the pre-embedded anchor sleeve and fills the thread gap to achieve a seal.
[0014] Beneficial effects This invention provides an embedded anchor cable system for a vertical protective seepage barrier wall. Compared with the prior art, it has the following advantages: 1. In this invention, stress-regulating chambers are layered along the height direction within the anti-seepage wall. These chambers are connected to the main structure of the anti-seepage wall via deformable partitions made of glass fiber reinforced polyurethane composite material with varying elastic modulus. The chambers are filled with thixotropic self-healing grout. When the wall deforms, causing pressure changes within the chambers, the grout changes from a gel state to a fluid state and penetrates into the cracked area through microporous channels. The microcapsules rupture, releasing a curing agent to achieve self-healing of the cracks. Furthermore, pressure equalization is achieved between the chambers via connecting pipes with one-way valves, preventing localized stress concentration. This enables adaptive adjustment of wall deformation and automatic repair of damage, significantly improving the durability and anti-seepage reliability of the anti-seepage wall under environments with significant differential settlement. 2. In this invention, by setting an elastic buffer layer between the bearing plates in the anchor cable structure, combined with the annular boss limiting and pressure relief hole secondary buffering mechanism, the overall bearing capacity and anti-slip capability of the anchor cable are improved, effectively solving the stress concentration problem caused by the lack of buffer adjustment between the bearing plate and the surrounding medium in traditional anchor cables; at the same time, the pre-embedded anchor sleeve adopts a spiral guide groove locking design and a bentonite rubber composite water-swellable sealing ring, which realizes the rapid installation of the anchor cable and the fine adjustment of the radial position by ±10mm~20mm through rotation, and ensures the reliable sealing of the anchoring part under long-term stress and groundwater erosion environment, overcoming the defects of traditional grouting anchors that are easy to loosen and easy to form seepage channels. Attached Figure Description
[0015] Figure 1 This is a plan view of an embedded anchor cable system for a vertical protective seepage barrier wall proposed in this invention; Figure 2 This is an internal diagram of an embedded anchor cable system for a vertical protective seepage barrier proposed in this invention; Figure 3 This is a schematic diagram of the installation of the monitoring embedded parts in the embedded anchor cable system of a vertical protective seepage barrier proposed in this invention.
[0016] Legend: 1. Waterproof wall body; 2. Anchor cable structure; 21. Steel strand; 22. Bearing plate; 221. Annular boss; 222. Pressure relief hole; 223. Flow limiting plug; 23. Guide protrusion; 24. Stress sensor; 3. Stress adjustment chamber; 31. Thixotropic self-healing grout; 32. Connecting pipe; 33. One-way valve; 4. Deformable partition; 41. Flexible anchor bar; 5. Elastic buffer layer; 51. Outer fiber braided sleeve; 52. Inner elastomer; 6. Embedded anchor sleeve; 61. Spiral guide groove; 62. Annular sealing ring; 7. Monitoring embedded parts; 71. Strain sensor; 72. Displacement sensor. Detailed Implementation
[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] Please see Figures 1-3 The present invention provides two technical solutions, specifically including the following embodiments: Example 1: An embedded anchor cable system for a vertical protective seepage barrier wall includes a seepage barrier wall body 1 and an anchor cable structure 2 penetrating the wall body. The seepage barrier wall body 1 is formed by casting plastic concrete and has several stress-adjusting chambers 3 arranged in layers along the height of the wall body. The seepage barrier wall body 1 has a thickness of 0.8 meters and a height of 25 meters. The plastic concrete is cast with the following mix proportions: cement: fly ash: bentonite = 1:0.25:0.35, water-cement ratio 0.9, fiber content 0.2%. After molding, the measured elastic modulus is approximately 2100 MPa, the 28-day compressive strength is 4.2 MPa, and the seepage resistance grade is W10. The stress-regulating chamber 3 is connected to the main structure of the seepage-proof wall 1 via deformable partitions 4. Each layer of stress-regulating chamber 3 is arranged every 4 meters along the height direction, with one chamber per meter along the width of the wall in each layer. The chamber dimensions are 800mm on the major axis, 400mm on the minor axis, and 150mm in depth. The deformable partitions 4 are made of glass fiber reinforced polyurethane composite material with a gradient change in elastic modulus. This composite material is composed of polyurethane prepolymer and glass fiber in a mass ratio of 100:25~40, wherein the polyurethane prepolymer is composed of polyether polyol and isocyanate in a molar ratio of hydroxyl to isocyanate groups of 1:1.05~ 1.15 Synthesis: The stress-regulating chamber 3 is filled with thixotropic self-healing grout 31. The thixotropic self-healing grout 31 is composed of cement-based materials, nano-silica, and polymer emulsion, with added microcapsule curing agent. Its static viscosity is greater than 500 Pa·s, and its viscosity drops to less than 10 Pa·s after shearing. The stress-regulating chambers 3 are interconnected by connecting pipes 32, and one-way valves 33 are installed in the connecting pipes 32. The cross-section of the stress-regulating chamber 3 is a flat ellipse, and the major axis of the ellipse is perpendicular to the stress direction of the seepage-proof wall 1. The thickness of the deformable partition 4 is thinner in the middle and thicker at both ends along the major axis. The thickness of the middle region is one-half to one-third of the thickness of the two end regions. The connection between the deformable partition 4 and the main structure of the anti-seepage wall 1 is reinforced by flexible anchor bars 41. The flexible anchor bars 41 are arranged in a wave shape and pre-embedded in the concrete of the anti-seepage wall 1. The diameter of the connecting pipe 32 is proportional to the square root of the chamber volume. The one-way valve 33 is a flexible membrane structure made of silicone rubber material with a cross-shaped cut at the center. The cut opens automatically when the pressure difference reaches 0.05MPa. The connecting pipe 32 is arranged in a zigzag pattern inside the anti-seepage wall 1 to avoid forming a straight seepage channel. The anchor cable structure 2 includes steel strands 21 and multiple bearing plates 22 spaced apart along the axial direction of the steel strands 21. An elastic buffer layer 5 is provided between the bearing plates 22. The elastic buffer layer 5 consists of an outer fiber braided sleeve 51 and an inner elastomer 52. The inner elastomer 52 is a shape memory polymer, which is a composite of polycaprolactone-based thermoplastic polyurethane and organic modified aluminosilicate clay at a mass ratio of 100:3~5. The edge of the bearing plate 22 is provided with an annular boss 221, which forms a limiting fit with the inner wall of the elastic buffer layer 5 to prevent the buffer layer from expanding radially under pressure. Several evenly distributed pressure relief holes 222 are opened on the annular boss 221 of the bearing plate 22. The pressure relief holes 222 are provided with... The flow-limiting plug 223 is made of porous ceramic material with a porosity of 40% to 60%. When the compression of the elastic buffer layer 5 exceeds 30% of its thickness, the inner elastic body 52 of the pressure relief hole 222 is squeezed outward to form a secondary buffer layer. The outer fiber braided sleeve 51 is fixed at the edge of the bearing plate 22 by a prestressed ring hoop. The outer fiber braided sleeve 51 is made of carbon fiber and aramid fiber mixed in a volume ratio of 30:70 to 50:50, and the braiding angle is ±45°. The spacing between the bearing plates 22 varies in gradient along the anchor cable axis. The spacing of the bearing plates 22 near the free section is larger, and the spacing of the bearing plates 22 near the anchoring section is smaller. The spacing ratio is 2:1 to 3:1. During operation, stress-regulating chambers 3 are layered along the height direction within the anti-seepage wall 1. These chambers are connected to the main wall structure via deformable partitions 4 made of glass fiber reinforced polyurethane composite material with varying elastic modulus. The chambers are filled with thixotropic self-healing grout 31. When the wall deforms, causing pressure changes within the chambers, the grout changes from a gel state to a fluid state and penetrates into the cracked areas through microporous channels. The microcapsules rupture, releasing a curing agent to achieve self-healing of the cracks. Furthermore, pressure is balanced between the chambers via connecting pipes 32 with one-way valves 33, preventing localized stress concentration. This achieves adaptive adjustment of wall deformation and automatic repair of damage, significantly improving the durability and anti-seepage reliability of the anti-seepage wall under environments with significant differential settlement.
[0019] Example 2: Based on Embodiment 1, a pre-embedded anchor sleeve 6 is provided at the junction of the seepage barrier wall 1 and the anchor cable structure 2. The inner wall of the pre-embedded anchor sleeve 6 is provided with a spiral guide groove 61. The anchoring end of the anchor cable structure 2 is provided with a guide protrusion 23 that cooperates with the spiral guide groove 61. An annular sealing ring 62 is provided between the outer wall of the pre-embedded anchor sleeve 6 and the seepage barrier wall 1. The spiral guide groove 61 includes three areas: an inlet section, a transition section, and a locking section. The spiral helix angle of the inlet section is 15°~20° to facilitate the smooth entry of the anchor cable head. The spiral helix angle of the transition section gradually decreases to 5°~10°. The spiral helix angle of the locking section is less than 5° and a barb structure is provided at the end to prevent the anchor cable from reversing. The guide protrusion 23 is a telescopic structure. The guide protrusion 23 consists of a spring-loaded slider and a housing. When the anchor cable rotates to the locking section, the slider pops out under the action of the spring and engages with the barb structure in the guide groove. The outer wall of the pre-embedded anchor sleeve 6 is provided with a threaded section, which cooperates with the threaded sleeve pre-embedded in the wall. By rotating the pre-embedded anchor sleeve 6, the radial position of the anchor cable in the seepage-proof wall 1 can be finely adjusted. The annular sealing ring 62 is set in the annular groove between the pre-embedded anchor sleeve 6 and the threaded sleeve. During the expansion process, the annular sealing ring 62 generates a radial clamping force on the pre-embedded anchor sleeve 6, and at the same time fills the thread gap to achieve sealing. An elastic buffer layer 5 is set between the bearing plates 22 in the anchor cable structure 2, combined with the limiting of the annular protrusion 221 and the pressure relief hole 22. 2. The secondary buffer mechanism improves the overall load-bearing capacity and anti-slip capability of the anchor cable, effectively solving the stress concentration problem caused by the lack of buffer adjustment between the traditional anchor cable bearing plate 22 and the surrounding medium. At the same time, the pre-embedded anchor sleeve 6 adopts a spiral guide groove 61 locking design and a bentonite rubber composite water-swellable sealing ring, which realizes the rapid installation of the anchor cable and the radial position fine adjustment of ±10mm~20mm through rotation, and ensures reliable sealing of the anchoring part under long-term stress and groundwater erosion environment. It overcomes the defects of traditional grouting anchors being easy to loosen and easy to form seepage channels. Several monitoring pre-embedded parts 7 are set on the outer surface of the seepage prevention wall 1 at intervals along the height direction. Each monitoring pre-embedded part 7 includes a strain transmitter. The strain sensor 71 is connected to the wall structure via pre-embedded steel bars, and the measuring end of the displacement sensor 72 extends out of the surface of the anti-seepage wall 1. The monitoring embedded part 7 is connected to the data acquisition system via a waterproof cable. The data acquisition system calculates the stress distribution and deformation trend of the wall based on the monitoring data. When the stress concentration coefficient exceeds the safety threshold, the system automatically issues an early warning signal and triggers the anchor cable tension adjustment program. Each steel strand 21 of the anchor cable structure 2 is equipped with a prestress sensor 24. The prestress sensor 24 measures the real-time tension of the steel strand 21 through the magnetostrictive principle. The sensor data is correlated with the wall monitoring data to achieve coordinated control of the wall and the anchor cable system.
[0020] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An embedded anchor cable system for a vertical protective seepage barrier wall, comprising a seepage barrier wall body (1) and an anchor cable structure (2) penetrating the wall body, characterized in that: The impermeable wall (1) is formed by casting plastic concrete and has several stress-adjusting chambers (3) arranged in layers along the height of the wall. Each stress-adjusting chamber (3) is connected to the main structure of the impermeable wall (1) through a deformable partition (4). The stress-adjusting chamber (3) is filled with thixotropic self-healing grout (31). The stress-adjusting chambers (3) are connected to each other through a connecting pipe (32). A one-way valve (33) is provided in the connecting pipe (32). The anchor cable structure (2) includes a steel strand (21) and a plurality of bearing plates (22) arranged at intervals along the axial direction of the steel strand (21). An elastic buffer layer (5) is provided between the bearing plates (22). The elastic buffer layer (5) is composed of an outer fiber braided sleeve (51) and an inner elastomer (52). An embedded anchor sleeve (6) is provided at the joint between the seepage barrier wall (1) and the anchor cable structure (2). The inner wall of the embedded anchor sleeve (6) is provided with a spiral guide groove (61). The anchoring end of the anchor cable structure (2) is provided with a guide protrusion (23) that cooperates with the spiral guide groove (61). An annular sealing ring (62) is provided between the outer wall of the embedded anchor sleeve (6) and the seepage barrier wall (1).
2. The embedded anchor cable system for a vertical protective seepage barrier wall according to claim 1, characterized in that: The stress-adjusting chamber (3) has a flat elliptical cross-section, and the major axis of the ellipse is perpendicular to the force direction of the impermeable wall (1). The thickness of the deformable partition (4) is distributed along the major axis in a state of being thin in the middle and thick at both ends, with the thickness of the middle region being one-half to one-third of the thickness of the two end regions.
3. The embedded anchor cable system for a vertical protective seepage barrier wall according to claim 1, characterized in that: The connection between the deformable partition (4) and the main structure of the anti-seepage wall (1) is reinforced by flexible anchor bars (41), which are arranged in a wave shape and embedded in the concrete of the anti-seepage wall (1).
4. The embedded anchor cable system for a vertical protective seepage barrier wall according to claim 1, characterized in that: The inner elastomer (52) is a shape memory polymer, which is composed of polycaprolactone-based thermoplastic polyurethane and organic modified aluminosilicate clay in a mass ratio of 100:3~5.
5. The embedded anchor cable system for a vertical protective seepage barrier wall according to claim 1, characterized in that: The diameter of the connecting pipe (32) is proportional to the square root of the chamber volume; the one-way valve (33) is a flexible membrane structure made of silicone rubber material and has a cross-shaped cut at the center. When the pressure difference reaches 0.05MPa, the cut opens automatically; the connecting pipe (32) is arranged in a zigzag pattern inside the anti-seepage wall (1) to avoid forming a straight seepage channel.
6. The embedded anchor cable system for a vertical protective seepage barrier wall according to claim 1, characterized in that: The edge of the bearing plate (22) is provided with an annular boss (221). The boss (221) and the inner wall of the elastic buffer layer (5) form a limiting fit to prevent the buffer layer from expanding radially when compressed. The annular boss (221) of the bearing plate (22) is provided with several evenly distributed pressure relief holes (222). The pressure relief holes (222) are provided with flow limiting plugs (223). The flow limiting plugs (223) are made of porous ceramic material with a porosity of 40%~60%. When the compression of the elastic buffer layer (5) exceeds 30% of its thickness, the inner elastic body (52) of the pressure relief hole (222) is opened and squeezed outward to form a secondary buffer layer.
7. The embedded anchor cable system for a vertical protective seepage barrier wall according to claim 1, characterized in that: The outer fiber braided sleeve (51) is fixed at the edge of the bearing plate (22) by a prestressed ring hoop. The spacing between the bearing plates (22) varies in gradient along the anchor cable axis. The bearing plates (22) closer to the free section have a larger spacing, while the bearing plates (22) closer to the anchoring section have a smaller spacing. The spacing ratio is 2:1 to 3:
1.
8. The embedded anchor cable system for a vertical protective seepage barrier wall according to claim 1, characterized in that: The outer surface of the seepage barrier wall (1) is provided with a number of monitoring embedded parts (7) arranged at intervals along the height direction. Each monitoring embedded part (7) includes a strain sensor (71) and a displacement sensor (72). The strain sensor (71) is connected to the wall structure through embedded steel bars. The measuring end of the displacement sensor (72) extends out of the surface of the seepage barrier wall (1). The monitoring embedded part (7) is connected to the data acquisition system through a waterproof cable. A prestress sensor (24) is installed on each steel strand (21) of the anchor cable structure (2).
9. The embedded anchor cable system for a vertical protective seepage barrier wall according to claim 1, characterized in that: The spiral guide groove (61) includes three regions: an inlet section, a transition section, and a locking section. The spiral angle of the inlet section is 15°~20° to facilitate the smooth entry of the anchor cable head. The spiral angle of the transition section gradually decreases to 5°~10°. The spiral angle of the locking section is less than 5° and has a barb structure at the end to prevent the anchor cable from reversing. The guide protrusion (23) is a telescopic structure. The guide protrusion (23) consists of a spring-loaded slider and a shell. When the anchor cable rotates to the locking section, the slider pops out under the action of the spring and engages with the barb structure of the guide groove.
10. The embedded anchor cable system for a vertical protective seepage barrier wall according to claim 1, characterized in that: The outer wall of the pre-embedded anchor sleeve (6) is provided with a threaded section. The threaded section cooperates with the threaded sleeve pre-embedded in the wall. By rotating the pre-embedded anchor sleeve (6), the radial position of the anchor cable in the anti-seepage wall (1) can be finely adjusted. The annular sealing ring (62) is set in the annular groove between the pre-embedded anchor sleeve (6) and the threaded sleeve. During the expansion process, the annular sealing ring (62) generates radial pressure on the pre-embedded anchor sleeve (6) and fills the thread gap to achieve sealing.