Tunnel bed leakage water treatment device and method

Abstract

This invention discloses a device and method for treating water leakage in tunnel track beds, relating to the field of tunnel maintenance technology. It includes an injection pipe, a plugging assembly, a flexible bladder, and a cap. The injection pipe is placed inside a borehole to pump water from the borehole to the outside or inject grout into the borehole. An injection port is located at the top of the injection pipe, and several injection holes are located on its sidewalls, connecting the inner and outer sides of the injection pipe. A one-way filter is installed inside each injection hole, which is fixed in place during water pumping and detached from the injection hole during grout injection. The flexible bladder is fixedly located at the bottom of the injection pipe, with its interior connected to the inner side of the injection pipe. The plugging assembly is used to seal the gap between the top of the outer side of the injection pipe and the inner side of the borehole. The cap is fixedly connected to the plugging assembly and seals the injection port. This invention effectively improves the treatment efficiency of tunnel track beds.

Description

Technical Field

[0001] This invention relates to the field of tunnel maintenance technology, and in particular to a device and method for treating water leakage in tunnel track beds. Background Technology

[0002] Although modern subway tunnels generally employ fully waterproof designs, the waterproofing system can still fail under complex geological conditions (such as water-rich sand layers and fault zones) and construction disturbances, leading to water leakage. The continuous accumulation of leaked water during operation can form a confined aquifer beneath the track bed. When the water pressure exceeds the buoyancy resistance of the track bed foundation, it will cause the track structure to rise, resulting in train speed restrictions. In extreme cases, uneven deformation of the track bed may lead to derailment risks, posing a significant operational safety hazard.

[0003] Traditional methods for treating water leakage in tunnel bed typically involve separate procedures for anchoring, drainage and pressure relief, and grouting, resulting in low efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for treating water leakage in tunnel track beds, so as to solve the problems existing in the prior art and effectively improve the treatment efficiency of tunnel track beds.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a device for treating water leakage in tunnel track beds, comprising an injection pipe, a plugging assembly, a flexible bladder, and a cap. The injection pipe is placed inside a borehole and used to pump water from the borehole to the outside or inject grout into the borehole. An injection port is provided at the top of the injection pipe, and several injection holes are provided on the sidewall of the injection pipe, connecting the inner and outer sides of the injection pipe. A one-way filter is provided inside each injection hole, which is fixed inside the injection hole when water is pumped from the borehole and detached from the injection hole when grout is injected into the borehole. The flexible bladder is fixedly disposed at the bottom end of the injection pipe, and its interior is connected to the inner side of the injection pipe. The plugging assembly is used to securely seal the gap between the top of the outer side of the injection pipe and the inner side of the borehole. The cap is fixedly connected to the plugging assembly and seals the injection port.

[0007] Preferably, it also includes a drill bit, which is fixedly disposed at the bottom end of the injection tube and positioned below the flexible bladder.

[0008] Preferably, it also includes a protective shell, the bottom end of which is detachably fixedly connected to the top end of the drill bit. The protective shell is used to cover the outside of the injection tube and the flexible bladder during the insertion of the injection tube into the borehole, and the protective shell is used to leave the borehole after the injection tube is inserted into the borehole.

[0009] Preferably, the injection tube includes a main body section and a bottom section. The bottom section is located below the main body section and is connected and communicates with the main body section. The flexible bladder is fixedly provided outside the bottom section. A slurry outlet hole is provided on the side wall of the bottom section. The slurry outlet hole communicates the inside of the bottom section with the inside of the flexible bladder. The main body section can rotate relative to the bottom section. All the injection holes are opened on the side wall of the main body section.

[0010] Preferably, the injection tube further includes a one-way rotating bearing, the inner ring of which is fixedly sleeved on the top end of the bottom section, and the outer ring of which is fixedly connected to the bottom end of the main body section, so that the main body section, the bottom section, and the drill bit can rotate in the same direction; the top end of the main body section is used for transmission connection with the drilling drive device, so as to drive the drill bit to rotate by the drilling drive device.

[0011] Preferably, the flexible bladder is fixedly sleeved outside the bottom section, and the flexible bladder is an annular bladder; the main body section includes an upper section, a lower section and several short tubes, the upper section, the short tubes and the lower section are arranged sequentially from top to bottom and can be detachably fixedly connected as a whole.

[0012] Preferably, the assembly further includes a grouting check valve, which is fixedly mounted on the extraction port during grouting into the borehole; the plugging assembly includes an auxiliary grouting ring and a pore sealing ring, the auxiliary grouting ring is fixedly sleeved on the top of the outer side of the extraction pipe, and the auxiliary grouting ring is used to make close contact with the inner side of the borehole; the pore sealing ring is fixedly sleeved on the top of the outer side of the extraction pipe, the pore sealing ring is positioned above the auxiliary grouting ring, the top end of the pore sealing ring and the pipe cap are used to be positioned outside the borehole, the outer diameter of the top end of the pore sealing ring is larger than the diameter of the borehole, and the pipe cap is fixedly connected to the pore sealing ring.

[0013] Preferably, the space between the pipe cap and the grouting check valve is fixedly filled with a waterproof sealing body; a rubber sealing ring is provided on the top of the injection pipe, and the rubber sealing ring is used to be placed between the pore sealing ring and the tunnel bed surface.

[0014] This invention provides a method for treating water leakage in tunnel track beds, using the tunnel track bed water leakage treatment device described above, and includes the following steps:

[0015] Step 1: Use detection instruments to confirm the location of water leakage in the tunnel bed. Analyze and judge the collected information on the location of water leakage in the tunnel bed to determine the location, depth and number of boreholes that need to be drilled and grouted, and formulate a specific drilling plan.

[0016] Step 2: Drill holes at the locations of water leakage in the tunnel track bed and place the injection pipe inside the holes;

[0017] Step 3: Connect a water pump to the injection port at the top of the injection pipe to perform water discharge and pressure relief operations to drain the water stored under the tunnel bed.

[0018] Step 4: After the water release and pressure relief operation is completed, fix the plugging component in the gap between the top of the outer side of the injection pipe and the inner side of the borehole;

[0019] Step 5: Connect the grouting device to the grouting port at the top of the grouting pipe and carry out the grouting operation;

[0020] Step Six: After the grouting operation is completed, fix the pipe cap to the plugging assembly to seal the grouting port.

[0021] Preferably, the following steps are also included:

[0022] Step 7: Apply solid waterproof adhesive to the pipe cap on the tunnel bed surface, and make sure the solid waterproof adhesive completely covers the pipe cap and the sealing components. The solid waterproof adhesive solidifies to form a fixed layer.

[0023] Step 8: Apply waterproof material to the surface of the fixing layer and make sure the waterproof material completely covers the fixing layer. The waterproof material will solidify to form a waterproof layer.

[0024] Step 9: Apply rubber to the surface of the waterproof layer and ensure that the rubber completely covers the waterproof layer. Allow the rubber to cure and form a protective layer.

[0025] The present invention achieves the following technical effects compared to the prior art:

[0026] The tunnel track bed seepage control device and method provided by this invention achieves water pumping from the borehole to the outside by using an injection pipe and a one-way filter, grouting into the borehole by using an injection pipe and a plugging component, and anchoring the injection pipe and a flexible bladder into the borehole. This integrated design of water drainage, pressure relief, grouting, and anchoring improves the efficiency of tunnel track bed seepage control. Specifically, in use, a water pump is first connected to the injection port on the injection pipe to perform water drainage and pressure relief operations, draining the water stored under the tunnel track bed. During the pumping process, the one-way filter is fixed inside the injection hole to prevent sand particles from entering the injection pipe during water drainage and pressure relief. After the water drainage and pressure relief operation is completed, the plugging component is fixedly sealed in the gap between the top of the outer side of the injection pipe and the inner side of the borehole to prevent grout from flowing out under grouting pressure. Then, the injection pipe is used for grouting. The extraction port at the top of the pipe is connected to a grouting device for grouting operations. During the grouting process, the grout first fills the interior of the flexible bladder under the action of grouting pressure and gravity, causing the flexible bladder to be filled and supported by the grout, forming a protrusion and embedding with the surrounding soil to form an anchoring effect. Then, the one-way filter is pushed outward by the grout and falls off. The grout fills the borehole through the extraction port, forming an anchoring effect with the surrounding soil. Thus, in addition to achieving the effect of filling the borehole with grout to treat water leakage, it also achieves a double anchoring effect between the flexible bladder and the extraction pipe and the surrounding soil through grouting. Water is discharged and pressure is released before grouting and anchoring, thereby achieving integrated and rapid treatment, improving the treatment efficiency of the tunnel track bed, and achieving rapid and efficient treatment of water leakage in the tunnel track bed. In actual engineering treatment applications, it reduces the loss of economic benefits. This plays an important role in the rapid treatment of subway tunnels that support the transportation of a large population. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A cross-sectional view of the tunnel bed seepage control device provided by the present invention;

[0029] Figure 2 A layout plan of the tunnel track bed seepage control device provided by the present invention;

[0030] Figure 3 A schematic diagram of the tunnel track bed leakage control device provided by the present invention;

[0031] Figure 4 This is a schematic diagram of a short pipe;

[0032] Figure 5 This is a schematic diagram showing the connection between the connector and the slot;

[0033] Figure 6 This is a schematic diagram showing the connection between the main body section and the bottom section;

[0034] Figure 7 A schematic diagram showing the state of a flexible capsule after it has formed a bulge.

[0035] Figure 8 This is a schematic diagram showing a protective shell installed on the injection tube.

[0036] Figure 9 A schematic diagram showing the removal of the protective shell from the injection pipe and the installation of the pore sealing ring;

[0037] Figure 10 A schematic diagram of installing a pipe cap on a pore sealing ring;

[0038] Figure 11 A schematic diagram of a waterproof sealant;

[0039] Figure 12 This is a schematic diagram of a one-way rotating bearing;

[0040] Figure 13 This is a schematic diagram of a unidirectional filter.

[0041] Figure 14 This is a schematic diagram of a one-way filter being installed on the injection pipe.

[0042] Figure 15 A schematic diagram of the auxiliary grouting ring;

[0043] Figure 16 A schematic diagram to aid in the installation of the grouting ring;

[0044] Figure 17 A schematic diagram of a water pump and pulping device;

[0045] Figure 18 A schematic diagram showing the coverage area of ​​the fixing layer, waterproof layer, and protective layer;

[0046] Figure 19 A schematic diagram showing the layers of the fixing layer, waterproof layer, and protective layer;

[0047] In the diagram: 1-Tunnel track bed leakage control device, 2-Tunnel track bed, 3-Water collection area, 4-Tunnel surrounding rock, 5-Injection pipe, 6-Flexible bladder, 7-Pipe cap, 8-Drill hole, 9-Injection hole, 10-One-way filter, 11-Drill bit, 12-Protective shell, 13-Main section, 14-Bottom section, 15-Grouting outlet, 16-One-way rotating bearing, 17-Upper section, 18-Lower section, 19-Short pipe, 20-Grouting. One-way valve, 21-Auxiliary grouting ring, 22-Pore sealing ring, 23-Waterproof sealing body, 24-Rubber sealing ring, 25-Fixing layer, 26-Waterproof layer, 27-Protective layer, 28-Filter screen, 29-Filter screen one-way fixing buckle, 30-Water pump, 31-Water storage tank, 32-Water pumping hose, 33-Pulping device, 34-Grouting hose, 35-Injection trolley, 36-Plug-in part, 37-Slot, 38-Injection port. Detailed Implementation

[0048] 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.

[0049] The purpose of this invention is to provide a device and method for treating water leakage in tunnel track beds, so as to solve the problems existing in the prior art and effectively improve the treatment efficiency of tunnel track beds.

[0050] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] Example 1

[0052] like Figures 1 to 19 As shown, this embodiment provides a tunnel track bed seepage control device 1, including an injection pipe 5, a plugging assembly, a flexible bladder 6, and a pipe cap 7. The injection pipe 5 is placed inside a borehole 8 and is used to pump water from the borehole 8 to the outside or inject grout into the borehole 8. An injection port 38 is provided at the top of the injection pipe 5, and several injection holes 9 are provided on the side wall of the injection pipe 5. The injection holes 9 can connect the inner and outer sides of the injection pipe 5. A one-way filter 10 is provided inside the injection hole 9. The one-way filter 10 can be fixed inside the injection hole 9 when water is pumped from the borehole 8, and can be detached from the injection hole 9 when grout is injected into the borehole 8. The flexible bladder 6 is fixedly installed at the bottom end of the injection pipe 5, and the interior of the flexible bladder 6 is connected to the inner side of the injection pipe 5. The plugging assembly is used to fix and seal the gap between the top of the outer side of the injection pipe 5 and the inner side of the borehole 8. The pipe cap 7 is fixedly connected to the plugging assembly and can seal the injection port 38.

[0053] The tunnel track bed leakage control device 1 provided in this embodiment uses an injection pipe 5 and a one-way filter 10 to pump water from the borehole 8 to the outside, an injection pipe 5 and a plugging component to inject grout into the borehole 8, and an injection pipe 5 and a flexible bladder 6 to anchor it within the borehole 8. This integrated design of water drainage, grouting, and anchoring improves the efficiency of tunnel track bed leakage control. Specifically, in use, a water pump 30 is first connected to the injection port 38 on the injection pipe 5 to perform water drainage and pressure relief operations, draining the water stored under the tunnel track bed 2. During the pumping process, the one-way filter 10 is fixed inside the injection hole 9. The one-way filter 10 prevents sand particles from entering the injection pipe 5 during water drainage and pressure relief. After the water drainage and pressure relief operation is completed, the plugging component is fixedly sealed in the gap between the top of the outer side of the injection pipe 5 and the inner side of the borehole 8 to prevent grout from flowing out under grouting pressure. The grouting device 33 is connected to the grouting port 38 at the top of the grouting pipe 5 for grouting operations. During the grouting process, the grout first fills the interior of the flexible bladder 6 under the action of grouting pressure and gravity, causing the flexible bladder 6 to be filled and supported by the grout, forming a protrusion and embedding with the surrounding soil to form an anchoring effect. Then, the one-way filter 10 is pushed outward by the grout and falls off. The grout fills the borehole 8 through the grouting hole 9, forming an anchoring effect with the surrounding soil. Thus, in addition to achieving the effect of filling the borehole 8 with grout to treat water leakage, the flexible bladder 6 and the grouting pipe 5 also achieve a double anchoring effect with the surrounding soil through grouting. Water is discharged and pressure is released before grouting and anchoring, thereby achieving integrated and rapid treatment, improving the treatment efficiency of the tunnel track bed 2, and achieving rapid and efficient treatment of water leakage in the tunnel track bed 2. In actual engineering treatment applications, it reduces the loss of economic benefits. This plays an important role in the rapid treatment of subway tunnels that support the transportation of a large population.

[0054] As a preferred embodiment of this invention, the tunnel bed leakage control device 1 provided in this embodiment also includes a drill bit 11, which is fixedly installed at the bottom end of the injection pipe 5 and placed below the flexible bladder 6. The integrated structure formed by connecting the injection pipe 5 and the drill bit 11 is used as a drill rod, realizing the integrated design of drilling, water drainage and pressure relief, grouting and anchoring, thereby improving the efficiency of tunnel bed leakage control.

[0055] As a preferred embodiment of this invention, the tunnel bed seepage control device 1 provided in this embodiment also includes a protective shell 12. The bottom end of the protective shell 12 is detachably fixed to the top end of the drill bit 11. The protective shell 12 is used to cover the outside of the injection pipe 5 and the flexible bladder 6 during the process of the injection pipe 5 being inserted into the borehole 8, so as to effectively protect the flexible bladder 6 and the one-way filter 10 during the process of the injection pipe 5 being inserted into the borehole 8, effectively preventing the flexible bladder 6 from wearing and the one-way filter 10 from falling off. The protective shell 12 is used to leave the borehole 8 after the injection pipe 5 is inserted into the borehole 8.

[0056] As a preferred embodiment of this invention, the tunnel bed seepage control device 1 provided in this invention also includes a fixing ring. The top end of the protective shell 12 is detachably fixed to the fixing ring to facilitate operation of the protective shell 12. Specifically, the top end of the protective shell 12 and the fixing ring can be connected by a thread or a snap-fit ​​connection.

[0057] As a preferred embodiment of this invention, the bottom end of the protective shell 12 is engaged with the top end of the drill bit 11. The bottom end of the protective shell 12 has an insertion part 36, and the top end of the drill bit 11 has a slot 37. The insertion part 36 can be inserted into and engaged in the slot 37. When the top end of the protective shell 12 is pulled forcefully, the insertion part 36 can undergo elastic deformation and leave the slot 37.

[0058] In a preferred embodiment of this invention, the injection pipe 5 includes a main body section 13 and a bottom section 14. The bottom section 14 is located below the main body section 13 and is connected to and communicates with the main body section 13. A flexible bladder 6 is fixedly mounted on the outside of the bottom section 14. A grout outlet hole 15 is opened on the side wall of the bottom section 14, which communicates the inside of the bottom section 14 with the inside of the flexible bladder 6. The main body section 13 can rotate relative to the bottom section 14. During grouting, the main body section 13 rotates to facilitate the detachment of the one-way filter 10 and prevent the flexible bladder 6 from rotating and shifting. All injection holes 9 are opened on the side wall of the main body section 13 to provide sufficient installation space and protrusion space for the flexible bladder 6, thereby enhancing the anchoring effect.

[0059] In a preferred embodiment of this invention, the injection pipe 5 further includes a one-way rotating bearing 16. The inner ring of the one-way rotating bearing 16 is fixedly sleeved on the top end of the bottom section 14, and the outer ring of the one-way rotating bearing 16 is fixedly connected to the bottom end of the main body section 13, so that the main body section 13, the bottom section 14, and the drill bit 11 can rotate in the same direction. The top end of the main body section 13 is used for transmission connection with the drilling drive device, so that the drill bit 11 can be driven by the drilling drive device to rotate. This can realize the power transmission of the drilling drive device, which is convenient for drilling, and can also realize the rotation of the main body section 13 relative to the bottom section 14, which is convenient for the one-way filter 10 to fall off.

[0060] In a preferred embodiment of this invention, the flexible bladder 6 is fixedly sleeved on the outside of the bottom section 14. The flexible bladder 6 is an annular bladder to enhance the anchoring effect. The main body section 13 includes an upper section 17, a lower section 18, and several short pipes 19. The upper section 17, short pipes 19, and lower section 18 are arranged sequentially from top to bottom and can be detachably fixedly connected as a whole for easy transportation. The number of short pipes 19 can be determined according to actual needs. By increasing or decreasing the number of short pipes 19, the overall length of the injection pipe 5 can be controlled to achieve different drilling depths 8. In a preferred embodiment of this invention, the upper section 17, short pipes 19, and lower section 18 are sequentially threaded together.

[0061] As a preferred embodiment of this invention, the flexible capsule 6 is made of highly elastic rubber, which is durable.

[0062] As a preferred embodiment of this invention, the tunnel bed seepage control device 1 provided in this embodiment further includes a grouting one-way valve 20. The grouting one-way valve 20 is fixedly installed on the extraction port 38 when grouting is injected into the borehole 8 to prevent grout backflow during grouting. The plugging assembly includes an auxiliary grouting ring 21 and a pore sealing ring 22. The auxiliary grouting ring 21 is fixedly sleeved on the top of the outer side of the extraction pipe 5 and is used to make close contact with the inner side of the borehole 8. The pore sealing ring 22 is fixedly sleeved on the top of the outer side of the extraction pipe 5 and is positioned above the auxiliary grouting ring 21. The top end of the pore sealing ring 22 and the cap 7 are positioned outside the borehole 8. The outer diameter of the top end of the pore sealing ring 22 is larger than the diameter of the borehole 8. The auxiliary grouting ring 21 and the pore sealing ring 22 achieve double sealing, which can enhance the grouting effect. The cap 7 is fixedly connected to the pore sealing ring 22.

[0063] As a preferred embodiment of this example, the space between the pipe cap 7 and the grouting check valve 20 is fixedly filled with a waterproof sealant 23. The waterproof sealant 23 is obtained by filling the space between the pipe cap 7 and the grouting check valve 20 with waterproof sealing material and then curing it. The top end of the injection pipe 5 is fitted with a rubber sealing ring 24, which is used to be placed between the pore sealing ring 22 and the surface of the tunnel bed 2 to enhance the sealing effect.

[0064] As a preferred embodiment of this invention, the one-way filter 10 consists of a filter screen 28 and a one-way fixing buckle 29. The filter screen 28 is used to filter sand and soil, and the one-way fixing buckle 29 is used to ensure that the filter screen 28 will not fall off when pumping water.

[0065] In a preferred embodiment of this invention, the water pump 30 is equipped with a water storage tank 31 and a water pumping hose 32. The water storage tank 31 is used to store the water pumped by the water pump 30, and the water pumping hose 32 is used to connect the water pump 30 to the injection port 38 on the injection pipe 5. The slurry making device 33 is equipped with a grouting hose 34, which is used to connect the slurry making device 33 to the grouting check valve 20. In a preferred embodiment of this invention, the water storage tank 31, the water pump 30, and the slurry making device 33 are fixedly mounted on the injection trolley 35 from bottom to top. The injection trolley 35 is movable to facilitate the overall transfer of the water storage tank 31, the water pump 30, and the slurry making device 33. In this embodiment, conventional slurry making equipment can be used for the slurry making device 33.

[0066] In this embodiment, a detachable grouting check valve 20 is pre-installed on the grouting hose 34 of the grouting device 33. Then, the grouting check valve 20 and the grouting hose 34 are connected to the extraction port 38 at the top of the extraction pipe 5 for grouting operation. After the grouting operation is completed, the grouting hose 34 is pulled out, and the grouting hose 34 is separated from the grouting check valve 20. The grouting check valve 20 is left on the extraction port 38 to effectively seal the grout.

[0067] As a preferred embodiment of this invention, the tunnel track bed leakage control device 1 provided in this embodiment further includes a fixing layer 25, a waterproof layer 26, and a protective layer 27. The fixing layer 25 is fixedly covered on the pipe cap 7 on the surface of the tunnel track bed 2. The coverage area of ​​the fixing layer 25 is larger than that of the pipe cap 7 to enhance the fixing effect of the pipe cap 7 and the injection pipe 5 and to play a preliminary waterproofing role. The waterproof layer 26 is fixedly covered on the fixing layer 25 on the surface of the tunnel track bed 2. The coverage area of ​​the waterproof layer 26 is larger than that of the fixing layer 25 to enhance the waterproof performance of the leakage control location of the tunnel track bed 2. The protective layer 27 is fixedly covered on the waterproof layer 26 on the surface of the tunnel track bed 2. The coverage area of ​​the protective layer 27 is larger than that of the waterproof layer 26 to enhance the safety of the leakage control location of the tunnel track bed 2.

[0068] Example 2

[0069] This embodiment provides a method for treating water leakage in tunnel track beds, using the tunnel track bed water leakage treatment device 1 from Embodiment 1, including the following steps:

[0070] Step 1: Use detection instruments (such as ground penetrating radar) to confirm the location of water seepage defects in tunnel track 2. Analyze and judge the collected information on the location of water seepage defects in tunnel track 2 to determine the location, depth and number of boreholes that need to be drilled for grouting treatment, and formulate a specific drilling plan.

[0071] Step 2: Drill holes at the location of water leakage in the tunnel track bed 2, drilling to the water collection area 3 within the surrounding rock 4 of the tunnel, and place the injection pipe 5 inside the borehole 8.

[0072] Step 3: Connect the external water pump 30 to the injection port 38 at the top of the injection pipe 5 to carry out water discharge and pressure relief operations to drain the water stored under the tunnel track bed 2.

[0073] Step 4: After the water release and pressure relief operation is completed (when the water output is very small or non-existent), fix the plugging component in the gap between the top of the outer side of the injection pipe 5 and the inner side of the borehole 8.

[0074] Step 5: Connect the grouting device 33 to the grouting port 38 at the top of the grouting pipe 5 and carry out the grouting operation;

[0075] Step 6: After the grouting operation is completed, fix the pipe cap 7 to the plugging assembly to seal the extraction port 38.

[0076] The tunnel track bed leakage control method provided in this embodiment uses an injection pipe 5 and a one-way filter 10 to pump water from the borehole 8 to the outside, an injection pipe 5 and a plugging assembly to inject grout into the borehole 8, and an injection pipe 5 and a flexible bladder 6 to anchor it within the borehole 8. This integrated design of water drainage, grouting, and anchoring improves the efficiency of tunnel track bed leakage control. Specifically, in use, a water pump 30 is first connected to the injection port 38 on the injection pipe 5 to perform water drainage and pressure relief operations, draining the water stored under the tunnel track bed 2. During the pumping process, the one-way filter 10 is fixed inside the injection hole 9. The one-way filter 10 prevents sand particles from entering the injection pipe 5 during water drainage and pressure relief. After the water drainage and pressure relief operation is completed, the plugging assembly is fixedly sealed in the gap between the top of the outer side of the injection pipe 5 and the inner side of the borehole 8 to prevent grout from flowing out under grouting pressure. The grouting device 33 is connected to the grouting port 38 at the top of the grouting pipe 5 for grouting operations. During the grouting process, the grout first fills the interior of the flexible bladder 6 under the action of grouting pressure and gravity, causing the flexible bladder 6 to be filled and supported by the grout, forming a protrusion and embedding with the surrounding soil to form an anchoring effect. Then, the one-way filter 10 is pushed outward by the grout and falls off. The grout fills the borehole 8 through the grouting hole 9, forming an anchoring effect with the surrounding soil. Thus, in addition to achieving the effect of filling the borehole 8 with grout to treat water leakage, the flexible bladder 6 and the grouting pipe 5 also achieve a double anchoring effect with the surrounding soil through grouting. Water is discharged and pressure is released before grouting and anchoring, thereby achieving integrated and rapid treatment, improving the treatment efficiency of the tunnel track bed 2, and achieving rapid and efficient treatment of water leakage in the tunnel track bed 2. In actual engineering treatment applications, it reduces the loss of economic benefits. This plays an important role in the rapid treatment of subway tunnels that support the transportation of a large population.

[0077] As a preferred embodiment of this invention, the tunnel bed leakage treatment method provided in this embodiment further includes the following steps:

[0078] Step 7: Apply solid waterproof adhesive to the pipe cap 7 on the surface of the tunnel track bed 2, and make the solid waterproof adhesive completely cover the pipe cap 7 and the sealing component. The solid waterproof adhesive solidifies to form a fixing layer 25 to enhance the fixing effect of the pipe cap 7 and the injection pipe 5, and play a preliminary waterproofing role.

[0079] Step 8: Apply waterproof material to the surface of the fixing layer 25 and make the waterproof material completely cover the fixing layer 25. The waterproof material solidifies to form a waterproof layer 26 to enhance the waterproof performance of the location where the tunnel bed 2 is treated for water leakage.

[0080] Step 9: Apply rubber to the surface of the waterproof layer 26 and make the rubber completely cover the waterproof layer 26. The rubber cures to form a protective layer 27 to enhance the safety of the location for water leakage treatment of the tunnel bed 2.

[0081] In this embodiment, when performing step five, a detachable grouting check valve 20 is pre-installed on the grouting hose 34 of the slurry preparation device 33. Then, the grouting check valve 20 and the grouting hose 34 are connected to the extraction port 38 at the top of the extraction pipe 5 for grouting operation. When performing step six, after the grouting operation is completed, the grouting hose 34 is pulled out, and the grouting hose 34 is separated from the grouting check valve 20. The grouting check valve 20 is left on the extraction port 38 to effectively seal the grout.

[0082] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A device for treating water leakage in tunnel track beds, characterized in that: The system includes an injection pipe, a plugging assembly, a flexible bladder, and a cap. The injection pipe is placed inside the borehole and is used to pump water from the borehole to the outside or inject grout into the borehole. The injection pipe is first used for water drainage and pressure relief to drain the water stored under the tunnel bed, and then used for grouting to fill the water collection area under the tunnel bed and the borehole with grout. The top of the injection pipe is provided with an injection port, which is used to discharge water that has entered the injection pipe during water discharge and pressure relief operations, and to inject grout into the injection pipe during grouting operations. The side wall of the injection pipe is provided with a number of injection holes, which can connect the inner side and the outer side of the injection pipe. The injection holes are used to allow water in the borehole and water collection area to enter the injection pipe during water discharge and pressure relief operations, and to allow grout in the injection pipe to enter the borehole and water collection area during grouting operations. The injection hole is equipped with a one-way filter. The one-way filter can be fixed in the injection hole when water is pumped out of the borehole. When grout is injected into the borehole, the one-way filter can be pushed out of the injection hole by the grout. The flexible bladder is fixedly disposed at the bottom end of the injection tube, and the interior of the flexible bladder is connected to the inner side of the injection tube. The plugging assembly is used to fix and seal the gap between the top of the outer side of the injection tube and the inner side of the borehole. The tube cap is fixedly connected to the plugging assembly, and the tube cap can seal the injection port. The system also includes a drill bit, which is fixedly disposed at the bottom end of the injection tube and positioned below the flexible bladder. The injection tube includes a main body section and a bottom section, with the bottom section positioned below the main body section and connected and communicating with the main body section. The flexible bladder is fixedly disposed outside the bottom section. The main body section is rotatable relative to the bottom section. The injection tube also includes a one-way rotating bearing, with the inner ring of the one-way rotating bearing fixedly sleeved on the top end of the bottom section and the outer ring of the one-way rotating bearing fixedly connected to the bottom end of the main body section, so that the main body section, the bottom section, and the drill bit can rotate in the same direction.

2. The tunnel track bed leakage control device according to claim 1, characterized in that: It also includes a protective shell, the bottom end of which is detachably fixed to the top end of the drill bit. The protective shell is used to cover the outside of the injection tube and the flexible bladder during the insertion of the injection tube into the borehole, and the protective shell is used to leave the borehole after the injection tube is inserted into the borehole.

3. The tunnel track bed leakage control device according to claim 1, characterized in that: The bottom section has a slurry outlet hole on its side wall, which connects the inside of the bottom section with the inside of the flexible bladder. All the injection holes are located on the side wall of the main body section.

4. The tunnel track bed leakage control device according to claim 1, characterized in that: The top end of the main body section is used for transmission connection with the drilling drive device, so as to drive the drill bit to rotate under the drive of the drilling drive device.

5. The tunnel track bed leakage control device according to claim 1, characterized in that: The flexible bladder is fixedly sleeved outside the bottom section, and the flexible bladder is an annular bladder; the main body section includes an upper section, a lower section and several short tubes, the upper section, the short tubes and the lower section are arranged sequentially from top to bottom and can be detachably fixedly connected as a whole.

6. The tunnel track bed leakage control device according to claim 1, characterized in that: It also includes a grouting check valve, which is fixedly installed on the injection port when grouting is injected into the borehole; the plugging assembly includes an auxiliary grouting ring and a pore sealing ring, the auxiliary grouting ring is fixedly sleeved on the top of the outer side of the injection pipe, and the auxiliary grouting ring is used to make close contact with the inner side of the borehole; the pore sealing ring is fixedly sleeved on the top of the outer side of the injection pipe, the pore sealing ring is positioned above the auxiliary grouting ring, the top end of the pore sealing ring and the pipe cap are used to be placed outside the borehole, the outer diameter of the top end of the pore sealing ring is larger than the diameter of the borehole, and the pipe cap is fixedly connected to the pore sealing ring.

7. The tunnel track bed leakage control device according to claim 6, characterized in that: The space between the pipe cap and the grouting check valve is fixedly filled with a waterproof sealing body; a rubber sealing ring is provided on the top of the extraction pipe, and the rubber sealing ring is used to be placed between the pore sealing ring and the surface of the tunnel bed.

8. A method for treating water leakage in tunnel track bed, using the water leakage treatment device for tunnel track bed as described in any one of claims 1 to 7, characterized in that: Includes the following steps: Step 1: Use detection instruments to confirm the location of water leakage in the tunnel bed. Analyze and judge the collected information on the location of water leakage in the tunnel bed to determine the location, depth and number of boreholes that need to be drilled and grouted, and formulate a specific drilling plan. Step 2: Drill holes at the locations of water leakage in the tunnel track bed and place the injection pipe inside the holes; Step 3: Connect a water pump to the injection port at the top of the injection pipe to perform water discharge and pressure relief operations to drain the water stored under the tunnel bed. Step 4: After the water release and pressure relief operation is completed, fix the plugging component in the gap between the top of the outer side of the injection pipe and the inner side of the borehole; Step 5: Connect the grouting device to the grouting port at the top of the grouting pipe and carry out the grouting operation; Step Six: After the grouting operation is completed, fix the pipe cap to the plugging assembly to seal the grouting port.

9. The method for treating water leakage in tunnel track bed according to claim 8, characterized in that: It also includes the following steps: Step 7: Apply solid waterproof adhesive to the pipe cap on the tunnel bed surface, and make sure the solid waterproof adhesive completely covers the pipe cap and the sealing components. The solid waterproof adhesive solidifies to form a fixed layer. Step 8: Apply waterproof material to the surface of the fixing layer and make sure the waterproof material completely covers the fixing layer. The waterproof material will solidify to form a waterproof layer. Step 9: Apply rubber to the surface of the waterproof layer and ensure that the rubber completely covers the waterproof layer. Allow the rubber to cure and form a protective layer.

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