Anti-seepage wall joint wall brushing device based on high-pressure slurry internal circulation washing and using method
The anti-seepage wall joint brushing device, which uses high-pressure grout internal circulation flushing, combined with the coordinated operation of wire brush and grouting pipe, solves the problems of traditional wire brushes having many dead corners and low efficiency in cleaning ultra-deep trenches, and achieves efficient cleaning of joint surfaces and reduces the risk of leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-28
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional wire brushes, due to their large swing and poor fit in ultra-deep trenches, result in many dead corners and low efficiency, making it difficult to effectively remove mud and impurities from the surface of the anti-seepage wall joints, thus creating potential leakage hazards.
The anti-seepage wall joint brushing device adopts high-pressure grout internal circulation flushing. Through the coordinated operation of wire brush and high-pressure jet, a three-dimensional cleaning of the joint surface is achieved. The wire brush scraping and the high-pressure mud sprayed by the grouting pipe are used to repeatedly perform the "downward brushing and upward flushing" operation to ensure that impurities are thoroughly removed.
It achieves thorough cleaning of the joints of the anti-seepage wall, improves construction efficiency, reduces the risk of mud inclusion and leakage, meets the requirements of green construction, and has economic and environmental benefits.
Smart Images
Figure CN121781578A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of anti-seepage wall construction technology, and in particular relates to an anti-seepage wall joint brushing device and its usage method based on high-pressure grout internal circulation flushing. Background Technology
[0002] In the geologically complex southwest region, many high dam projects in water conservancy and hydropower engineering projects commonly employ ultra-deep cutoff walls, exceeding 100 meters in depth and even reaching over 150 meters, as the core vertical seepage prevention system for their dam foundations and abutments. The cutoff walls are constructed using a segmented construction method, with the first and second phases poured sequentially. The construction quality of the joints directly determines the integrity and reliability of the entire seepage prevention system. The cutoff walls are formed using mud slurry for wall protection. During the construction of the second-phase trenches, the concrete joints of the first-phase trenches, due to prolonged immersion in the wall-stabilizing mud slurry, develop a layer of mud and other impurities on their surface. If not thoroughly cleaned, this mud and impurities will become weak interlayers within the wall structure, forming leakage channels. Therefore, joint brushing is a crucial step in cutoff wall construction. Currently, the traditional steel wire brushing device commonly used in these projects relies primarily on the equipment's own weight to drive the wire brush in a mechanical up-and-down scraping motion. However, this technology has significant limitations in ultra-deep trenches: First, as the trench depth increases, the oscillation amplitude of the brush increases, and the fit with the joint surface decreases, resulting in uneven brushing force; second, traditional purely mechanical brushing has limited effectiveness in removing mud skin embedded in tiny pores and irregular dead corners of the concrete surface, easily leaving potential leakage hazards; therefore, it is necessary to design a brush device and usage method for anti-seepage wall joints based on high-pressure grout internal circulation flushing to solve the above problems. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide a wall brush device and method for use of a seepage-proof wall joint based on high-pressure slurry internal circulation flushing. It aims to solve the technical problems of traditional wire brushes in ultra-deep trenches, which have many dead corners and low efficiency due to large swing and poor fit. In this way, it can effectively remove mud and impurities from the joint surface and avoid mud trapping and leakage risks.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A wall-brushing device for cut-off wall joints based on high-pressure grout internal circulation flushing is disclosed. The wall-brushing device includes a mounting frame, a wire brush, and a grouting pipe. After the second-phase trench of the cut-off wall is completed, the impurities attached to the surface of the first-phase cut-off wall joints that were constructed earlier are cleaned. The wall-brushing device is installed on the side of the double-wheel milling cutter frame near the joint. The milling cutter frame is lowered into the trench hole. The wire brush on the wall-brushing device scrapes the impurities on the joint through the vertical movement of the milling cutter frame. At the same time, the pumping system is started to pressurize and transport the wall-stabilizing slurry in the trench. High-pressure jet fluid is formed through the grouting hole of the grouting pipe to flush the joint residue. The "bottom brush and top flushing" coordinated operation is repeated 2 to 3 times until the joint is clean, realizing internal circulation cleaning.
[0005] Preferably, the mounting bracket is a support device for the wire brush and the injection pipe, and is installed on one side of the twin-wheel milling cutter holder by bolts; the mounting bracket is manufactured and machined according to the twin-wheel milling cutter model and the shape of the joint.
[0006] Preferably, the wire brush is a scraping device for the joint of the seepage-proof wall, the scraping surface of which matches the joint surface, it is fixed on the mounting frame by steel clamps, and the impurities at the joint are scraped by the vertical movement of the milling cutter frame.
[0007] Preferably, the grouting pipe is a cylindrical steel pipe with several grouting holes on its wall surface. The grouting pipe is set above the wire brush, fixed on the mounting frame, and connected to the twin-wheel milling pumping system through two steel pipes with flange structures. The pumping system delivers pressurized wall-stabilizing slurry, which forms a high-pressure jet through the grouting holes of the grouting pipe to flush the joint area.
[0008] Preferably, the wire brush is located above the grouting pipe. The wire brush uses the vertical movement of the equipment to scrape the impurities at the joint, and the grouting pipe sprays high-pressure grout to further flush away the joint residue.
[0009] Preferably, the wall brushing device forms an internal slurry circulation system through the injection, flushing, and recirculation of high-pressure slurry.
[0010] Preferably, the method of using a wall-brushing device for a seepage-proof wall joint based on high-pressure grout internal circulation flushing includes the following steps: S1, Installation and positioning of the wall brush device: After the second-phase trenching operation is completed by the twin-wheel milling machine, the wall brush device is fixedly installed at the orifice position on the side of the twin-wheel milling cutter frame near the joint of the first-phase anti-seepage wall by the mounting bracket, ensuring that the scraping surface of the wire brush is parallel and aligned with the joint surface. The grouting pipe is reliably connected to the twin-wheel milling pumping system through two steel pipes with flange structure. S2, Lowering the brush wall and jet flushing: The twin-wheel milling cutter holder equipped with the wall-brushing device is lowered into the wall-brushing part of the slot. Through the vertical reciprocating motion of the twin-wheel milling cutter holder, the wire brush is driven to mechanically scrape the joint surface in the upper and lower strokes. At the same time, the twin-wheel milling pumping system is started to pump pressurized solidification slurry into the slurry injection pipe. The slurry forms a high-pressure jet through the injection hole to vertically flush the joint surface, realizing the coordinated operation of "lower brush and upper flush" of wire brush scraping and high-pressure jet flushing. S3, repeat the brushing cycle: Repeat step S2 of the process of lowering the brush and jet flushing 2-3 times. Through the synergistic effect of multiple "lower brushing and upper flushing", the impurities attached to the surface of the joint of the first phase of the anti-seepage wall are effectively removed. S4, Wall brushing effect inspection and device removal: After completing a certain number of brushing cycles, the double-wheel milling cutter holder is raised to the opening. The surface of the wire brush is checked to ensure that there are no impurities trapped in it and that the thickness of the sediment at the bottom of the tank has not increased significantly. This indicates that the joint cleaning is qualified. Then, the brushing device is lifted away from the tank to complete the brushing operation on the joint surface.
[0011] Preferably, in step S1, when installing the wall brush device, the mounting surface of the double-wheel milling cutter holder must be cleaned first to ensure that the contact surface between the mounting bracket and the cutter holder is flat and free of debris. Then, the connecting bolts are tightened symmetrically using a torque wrench to ensure the stability and centering of the wall brush device in deep trench operations.
[0012] Preferably, in step S2, when lowering the tool holder, the appropriate lowering speed, the working pressure of the high-pressure jet, and the single stroke of the tool holder's up-and-down reciprocating motion are controlled, so as to achieve efficient wall brushing through the combination of pressure and mechanical motion.
[0013] Preferably, in step S4, the wall brushing effect inspection includes visual inspection and sediment detection: visual inspection includes checking that there is no obvious mud skin adhering to the surface of the wire brush; sediment detection includes checking that the thickness of sediment at the bottom of the tank does not increase before and after wall brushing. Only when both indicators are qualified can the joint cleaning be judged to be up to standard.
[0014] The beneficial effects of this invention are as follows: This invention achieves three-dimensional, thorough cleaning of the joint surface through an innovative "bottom brushing and top flushing" collaborative operation mode, significantly improving construction efficiency and reducing the risk of mud inclusion and leakage at the joint of the anti-seepage wall. Utilizing the existing wall-stabilizing mud in the trench as a high-pressure jet medium enables the recycling of the slurry, meeting green construction requirements and demonstrating significant economic and environmental benefits. The device, reliably connected to a dual-wheel milling cutter frame, effectively resists possible swaying and vibration during wall brushing in ultra-deep trenches exceeding 100m, ensuring the stability and efficiency of the wall brushing operation. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the wall brush device of the present invention; Figure 2 This is a schematic diagram of the mounting bracket for the wall brush device of the present invention; Figure 3 This is a schematic diagram of the steel wire brush structure of the wall brush device of the present invention; Figure 4 This is a schematic diagram of the slurry injection pipe of the wall brush device of the present invention; Figure 5 This is a schematic diagram of the operation of the wall brush device of the present invention; In the diagram: 1. Mounting frame; 2. Wire brush; 3. Grouting pipe; 31. Grouting hole; 32. Steel pipe; 4. Milling cutter holder; 5. Steel clamp. Detailed Implementation
[0016] Example 1: like Figures 1-5 As shown, a wall-brushing device for a cut-off wall joint based on high-pressure grout internal circulation flushing is described. The wall-brushing device includes a mounting frame 1, a wire brush 2, and a grouting pipe 3. After the second-phase trench of the cut-off wall is completed, the impurities attached to the surface of the first-phase cut-off wall joint that was constructed earlier are cleaned. The wall-brushing device is installed on the side of the double-wheel milling cutter frame 4 near the joint. The milling cutter frame 4 is lowered into the trench hole. The wire brush 2 on the wall-brushing device scrapes the impurities of the joint through the vertical movement of the milling cutter frame 4. At the same time, the pumping system is started to pressurize and transport the solidification slurry in the trench. High-pressure jet fluid is formed through the grouting hole 31 of the grouting pipe 3 to flush the joint residue. The "downward brushing and upward flushing" coordinated operation is repeated 2 to 3 times until the joint is clean, realizing internal circulation cleaning.
[0017] Preferably, the mounting frame 1 is a support device for the wire brush 2 and the injection pipe 3, and is installed on one side of the twin-wheel milling cutter holder 4 by bolts; the mounting frame 1 is manufactured and processed according to the twin-wheel milling cutter model and the shape of the joint.
[0018] Preferably, the wire brush 2 is a scraping device for the anti-seepage wall joint, and its scraping surface matches the joint surface. It is fixed on the mounting frame 1 by steel clips 5, and scrapes the impurities at the joint part by vertical movement of the milling cutter frame 4.
[0019] Preferably, the grouting pipe 3 is a cylindrical steel pipe with several grouting holes 31 on its wall surface. The grouting pipe 3 is set above the wire brush 2, fixed on the mounting frame 1, and connected to the twin-wheel milling pumping system through two steel pipes 32 with flange structures. The pumping system delivers pressurized wall-solidifying slurry, which forms a high-pressure jet through the grouting holes 31 of the grouting pipe 3 to flush the joint area.
[0020] Preferably, the wire brush 2 is located above the grouting pipe 3. The wire brush 2 uses the vertical movement of the equipment to scrape the impurities at the joint, and the grouting pipe 3 sprays high-pressure grout to further flush away the joint residue.
[0021] Preferably, the wall brushing device forms an internal slurry circulation system through the injection, flushing, and recirculation of high-pressure slurry.
[0022] Example 2: A method for using a wall-brushing device for a seepage-proof wall joint based on high-pressure grout internal circulation flushing includes the following steps: S1, Installation and positioning of the wall brush device: After the second-phase trenching operation is completed by the twin-wheel milling machine, the wall brush device is fixedly installed at the orifice position on the side of the twin-wheel milling cutter frame 4 near the joint of the first-phase anti-seepage wall by the mounting bracket 1, ensuring that the scraping surface of the wire brush 2 is parallel and aligned with the joint surface, and the grouting pipe 3 is reliably connected to the twin-wheel milling pumping system through two steel pipes 32 with flange structure. S2, Lowering the brush wall and jet flushing: The double-wheel milling cutter frame 4 equipped with the wall-brushing device is lowered into the wall-brushing part of the slot. Through the vertical reciprocating motion of the double-wheel milling cutter frame 4, the wire brush 2 is driven to perform a comprehensive mechanical scraping of the joint surface during the upper and lower strokes. At the same time, the double-wheel milling pumping system is started to pump pressurized solidification slurry into the slurry injection pipe 3. The slurry forms a high-pressure jet through the injection hole 31 to vertically flush the joint surface, realizing the coordinated operation of "lower brushing and upper flushing" of the wire brush 2 scraping and high-pressure jet flushing. S3, repeat the brushing cycle: Repeat step S2 of the process of lowering the brush and jet flushing 2-3 times. Through the synergistic effect of multiple "lower brushing and upper flushing", the impurities attached to the surface of the joint of the first phase of the anti-seepage wall are effectively removed. S4, Wall brushing effect inspection and device removal: After completing a certain number of brushing cycles, the double-wheel milling cutter holder 4 is raised to the opening. The surface of the wire brush 2 is checked to ensure that there are no impurities and that the thickness of the sediment at the bottom of the tank has not increased significantly. This indicates that the joint cleaning is qualified. Then, the brushing device is lifted away from the tank to complete the brushing operation on the joint surface.
[0023] Preferably, in step S1, when installing the wall brush device, the mounting surface of the double-wheel milling cutter holder 4 should be cleaned first to ensure that the contact surface between the mounting bracket 1 and the cutter holder is flat and free of debris. The connecting bolts should be tightened symmetrically using a torque wrench to ensure the stability and centering of the wall brush device in deep trench operations.
[0024] Preferably, in step S2, when lowering the tool holder, the appropriate lowering speed, the working pressure of the high-pressure jet, and the single stroke of the tool holder's up-and-down reciprocating motion are controlled, so as to achieve efficient wall brushing through the combination of pressure and mechanical motion.
[0025] Preferably, in step S4, the wall brushing effect inspection includes visual inspection and sediment detection: visual inspection includes checking that there is no obvious mud skin adhering to the surface of the wire brush 2; sediment detection includes checking that the thickness of sediment at the bottom of the tank does not increase before and after wall brushing. Only when both indicators are qualified can the joint cleaning be judged to be up to standard.
Claims
1. A wall-brushing device for a seepage-proof wall joint based on high-pressure grout internal circulation flushing, characterized in that, The wall brush device includes a mounting frame (1), a wire brush (2), and a grouting pipe (3). After the second phase of the anti-seepage wall is completed, the impurities attached to the joint surface of the first phase anti-seepage wall that has been constructed earlier are cleaned. The wall brush device is installed on the side of the double wheel milling cutter frame (4) near the joint. The milling cutter frame (4) is lowered into the groove. The wire brush (2) on the wall brush device scrapes the impurities of the joint through the vertical movement of the milling cutter frame. At the same time, the pumping system is started to pressurize and transport the solid wall mud in the trench. High pressure jet is formed through the grouting hole (31) of the grouting pipe.
2. The wall-brushing device for a seepage-proof wall joint based on high-pressure grout internal circulation flushing according to claim 1, characterized in that, The mounting bracket (1) is a support device for the wire brush (2) and the slurry pipe (3), and is installed on one side of the twin-wheel milling cutter holder (4) by bolt structure; the mounting bracket (1) is made and processed according to the twin-wheel milling cutter model and the shape of the joint.
3. The wall-brushing device for a seepage-proof wall joint based on high-pressure grout internal circulation flushing according to claim 1, characterized in that, The wire brush (2) is a scraping device for the joint of the seepage prevention wall. Its scraping surface matches the joint surface. It is fixed on the mounting frame (1) by steel clips (5) and scrapes the impurities of the joint part by vertical movement of the milling cutter frame (4).
4. The wall-brushing device for a seepage-proof wall joint based on high-pressure grout internal circulation flushing according to claim 1, characterized in that, The grouting pipe (3) is a cylindrical steel pipe with several grouting holes (31) on its wall surface. The grouting pipe (3) is set above the wire brush (2), fixed on the mounting frame (1), and connected to the double wheel milling pumping system through two steel pipes (32) with flange structure. The pumping system delivers pressurized wall-solidifying slurry, which forms a high-pressure jet through the grouting holes (31) of the grouting pipe to flush the joint.
5. The wall-brushing device for a seepage-proof wall joint based on high-pressure grout internal circulation flushing according to claim 1, characterized in that, The wire brush (2) is located above the grouting pipe (3). The wire brush (2) uses the vertical movement of the equipment to scrape the impurities at the joint. The grouting pipe (3) sprays high-pressure grout to further flush the joint residue.
6. The wall-brushing device for a seepage-proof wall joint based on high-pressure grout internal circulation flushing according to claim 1, characterized in that, The wall brush device forms an internal slurry circulation system through the injection, flushing, and reflux of high-pressure slurry.
7. The method of using the wall-brushing device for a seepage-proof wall joint based on high-pressure grout internal circulation flushing according to any one of claims 1-6, characterized in that, Includes the following steps: S1, Installation and positioning of the wall brush device: After the second-phase trenching operation is completed by the twin-wheel milling machine (4), the wall brush device is fixedly installed on the side of the twin-wheel milling cutter frame near the joint of the first-phase anti-seepage wall at the orifice position by the mounting bracket (1), ensuring that the scraping surface of the wire brush (2) is parallel and aligned with the joint surface, and the grouting pipe (3) is reliably connected to the twin-wheel milling pumping system through two steel pipes (32) with flange structure; S3, Lowering the brush wall and jet flushing: The double-wheel milling cutter holder equipped with the wall brush device is lowered into the wall brushing part of the slot. Through the vertical reciprocating motion of the double-wheel milling cutter holder (4), the wire brush (2) is driven to mechanically scrape the joint surface in the upper and lower strokes. At the same time, the double-wheel milling pumping system is started to pump the pressurized solidified mud into the slurry injection pipe (3). The mud forms a high-pressure jet through the slurry injection hole (31) to vertically flush the joint surface, realizing the coordinated operation of "lower brush and upper flush" of wire brush scraping and high-pressure jet flushing. S3, repeat the brushing cycle: Repeat step S2 of the process of lowering the brush and jet flushing several times. Through the synergistic effect of multiple "lower brushing and upper flushing", the impurities attached to the surface of the joint of the first phase of the anti-seepage wall are effectively removed. S4, Wall brushing effect inspection and device removal: After completing a certain number of brushing cycles, the double-wheel milling cutter holder is lifted to the opening. The surface of the wire brush (2) is checked to ensure that there are no impurities and that the thickness of the sediment at the bottom of the tank does not increase significantly. The joint cleaning is then deemed qualified. The brushing device is then lifted away from the tank to complete the brushing operation on the joint surface.
8. The method of using the wall-brushing device for a seepage-proof wall joint based on high-pressure grout internal circulation flushing according to claim 7, characterized in that, In step S1, when installing the wall brush device, the mounting surface of the double-wheel milling cutter holder must be cleaned first to ensure that the contact surface between the mounting bracket (1) and the cutter holder is flat and free of debris. The connecting bolts are then tightened symmetrically using a torque wrench to ensure the stability and centering of the wall brush device in deep trench operations.
9. The method of using the wall-brushing device for a seepage-proof wall joint based on high-pressure grout internal circulation flushing according to claim 7, characterized in that, In step S2, when lowering the tool holder, the appropriate lowering speed, the working pressure of the high-pressure jet, and the single stroke of the tool holder's up-and-down reciprocating motion are controlled. Efficient wall brushing is achieved through the combination of pressure and mechanical motion.
10. The method of using the wall-brushing device for a seepage-proof wall joint based on high-pressure grout internal circulation flushing according to claim 7, characterized in that, In step S4, the wall brushing effect inspection includes visual inspection and sediment detection: visual inspection includes checking that there is no obvious mud skin attached to the surface of the wire brush (2); sediment detection includes checking that the thickness of sediment at the bottom of the tank does not increase before and after wall brushing. Only when both indicators are qualified can the joint cleaning be judged to be up to standard.