Tunnel leakage repair device

Abstract

The present invention provides a tunnel leakage repair device, which belongs to the technical field of tunnel maintenance. It includes a slurry storage tank, a grouting pump, a slurry pumping pipe, a Tesla valve pipe, a slurry inlet pipe, a slurry return pipe, an expansion and contraction joint and a grouting needle. The slurry storage tank is used to store grouting material; the grouting pump is connected to the slurry storage tank to extract the grouting material; one end of the slurry pumping pipe is connected to the grouting pump; the two ends of the Tesla valve pipe are respectively A port and B port, and the middle is provided with a C port, and the C port is connected to the other end of the slurry pumping pipe; one end of the slurry inlet pipe is connected to the B port of the Tesla valve pipe; one end of the slurry return pipe is connected to the A port of the Tesla valve pipe, and the other end is connected to the slurry storage tank; the expansion and contraction joint is arranged on the slurry return pipe, and expands when the pressure inside the slurry return pipe is higher than the first preset pressure, and contracts when it is lower than the second preset pressure; the grouting needle is connected to the other end of the slurry inlet pipe. The present invention is relatively easy to control the grouting pressure, can save manpower, and reduce safety hazards.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel maintenance, and more specifically, relates to a tunnel leakage repairing device. Background Art

[0002] Tunnel leakage repair is an important task in tunnel maintenance. Leakage in an operating tunnel can easily lead to problems such as the peeling of the interior decoration layer, equipment corrosion and slippery road surface, affecting driving safety. Therefore, when encountering tunnel leakage, it is necessary to repair it in time.

[0003] Grouting plugging is a common method for tunnel leakage repair. The conventional operation method is to drill grouting holes at the leakage site and use a grouting pump to inject the grouting material into the grouting holes. In order to enable the grouting material to be injected into deeper cracks or cavities, the rated pumping pressure of the grouting pump is generally high. However, when grouting in some weak parts of the tunnel, once the pressure is too high or the pressure changes sharply, it is easy to cause structural damage to the tunnel lining. Therefore, the control of grouting pressure is both important and difficult. To avoid this problem, a pressure gauge is usually added to the grouting pump, and an operator is specially arranged to pay attention to the pressure gauge at all times. Once the pressure gauge is found to have abnormal performance such as exceeding a certain pressure value or violent fluctuations, it is necessary to cooperate with other operators to stop the pump or perform other operations. However, since the pressure gauge is difficult to identify in dim light, the work of monitoring the pressure gauge is also relatively boring, and the grouting pressure rises very quickly in the later stage of grouting, it is more challenging to grasp the timing of operation. Therefore, this method is not only labor-intensive, but also has a high possibility of accidents due to negligence that miss the opportunity to handle, and there are great safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a tunnel leakage repair device to solve the technical problem that when using the grouting plugging method to repair tunnel leakage in the prior art, it is difficult to control the grouting pressure, which not only consumes manpower but also poses a great safety hazard.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a tunnel leakage repair device, including a slurry storage tank, a grouting pump, a slurry pumping pipe, a Tesla valve pipe, a slurry inlet pipe, a slurry return pipe, an expansion joint and a grouting needle, the slurry storage tank is used to store grouting material; the grouting pump is connected to the slurry storage tank to extract the grouting material; one end of the slurry pumping pipe is connected to the grouting pump; the two ends of the Tesla valve pipe are respectively A port and B port, and a C port is provided in the middle, and the direction from A port to B port is a low-resistance downstream direction, and the B port The flow direction to port A is high resistance, and port C is connected to the other end of the slurry pumping pipe; one end of the slurry inlet pipe is connected to port B of the Tesla valve pipe; one end of the slurry return pipe is connected to port A of the Tesla valve pipe, and the other end is connected to the slurry storage tank and is used to be immersed below the liquid surface of the grouting material; the expansion and contraction joint is provided on the slurry return pipe, and expands when the pressure inside the slurry return pipe is higher than the first preset pressure, and contracts when it is lower than the second preset pressure; the grouting needle is connected to the other end of the slurry inlet pipe and is used to be inserted into the grouting hole.

[0006] In combination with the above technical solution, in a possible implementation method, the connecting channel between port A and port B of the Tesla valve tube is a Tesla valve structure, and port C is connected to the connecting channel between port A and port B through an oblique channel inclined toward port B, forming a Venturi tube structure.

[0007] In combination with the above technical solution, in a possible implementation method, the diameter of the Tesla valve tube from port A to port C is larger than the diameter of the Tesla valve tube from port C to port B, and the diameter of the Tesla valve tube from port C to port B is larger than the inner diameter of port C of the Tesla valve tube.

[0008] In combination with the above technical solution, in a possible implementation, a plurality of C ports are provided in the middle of the slurry pumping pipe along the direction from port A to port B, the slurry pumping pipe is connected to one of the C ports, and the remaining C ports are closed.

[0009] In combination with the above technical solution, in a possible implementation, a buffer box is provided at the lower part of the slurry storage tank, one side of the buffer box is connected to the slurry storage tank through a filter, and the liquid inlet end and the slurry return pipe of the grouting pump are both connected to the buffer box.

[0010] In combination with the above technical solution, in a possible implementation method, the expansion joint includes a hard neck reduction tube and an elastic expansion sleeve. The hard neck reduction tube is arranged on the slurry return pipe, and a neck reduction structure is provided in the middle, and through holes are provided on both sides of the neck reduction structure; the elastic expansion sleeve is arranged on the hard neck reduction tube, and covers the neck reduction structure and the through hole, and the two ends are sealed and connected to the two ends of the hard neck reduction tube.

[0011] In combination with the above technical solution, in a possible implementation, tightening grooves are provided at both ends of the hard necked tube, the slurry return tube and the elastic expansion sleeve both cross the tightening grooves and are detachably fastened and sealed by a tightening hoop.

[0012] In combination with the above technical solution, in a possible implementation, a plurality of fluorescent line coatings arranged in parallel are provided on the outside of the elastic expansion and contraction sleeve.

[0013] In combination with the above technical solution, in a possible implementation manner, a connecting groove connecting the through holes on both sides of the necking structure is further provided on the outside of the necking structure.

[0014] In combination with the above technical solution, in a possible implementation method, a plurality of cleaning holes are provided on the Tesla valve tube, and the cleaning holes are connected to the loop structure inside the Tesla valve tube. An external binding tube is also provided on the outside of the Tesla valve tube to limit the plug in the cleaning hole and seal the cleaning hole.

[0015] The beneficial effect of the tunnel leakage repair device provided by the present invention is that: compared with the prior art, the grouting material injected from the C port in the early stage of grouting enters the Tesla valve tube at a high flow rate, so that a Venturi effect is formed in the Tesla valve tube, so that when the grouting material flows from the C port to the B port, a negative pressure is formed at the A port, so that the slurry return pipe also absorbs the grouting material from the slurry storage tank, which can improve the grouting efficiency in the early stage of grouting; and in the later stage of grouting, the grouting material entering from the C port will be divided into two parts, one part continues to enter the slurry inlet pipe from the B port and is poured into the grouting hole, and the other part It will enter the slurry return pipe from port A and flow back to the slurry storage tank. At the same time, due to the positive pressure state in the slurry return pipe, the expansion and contraction joint will expand. As the grouting continues, more and more grouting material entering from port C will enter the slurry return pipe from port A. As the flow rate of the grouting material increases, the flow velocity also increases, and the resistance encountered will also increase rapidly. On the one hand, the flow rate of the grouting material flowing out of port A will not be too large, thereby avoiding the gushing and splashing of the grouting material in the slurry storage tank. On the other hand, the grouting pressure at port A can be slowly increased in the later stage of grouting, avoiding too fast an increase in pressure at the grouting point. The operator only needs to hold the expansion joint to feel the expansion and contraction changes, or observe the changes in the appearance of the expansion joint, and can more easily know the current grouting status through expansion and contraction. When the expansion joint expands to a certain state, the grouting pump can be turned off in time or other operations can be taken, which can improve the timeliness of the operation and is not easy to be negligent; after turning off the grouting pump, the grouting material remaining in the slurry pumping pipe and the slurry inlet pipe due to pressure will return to the slurry storage tank through the slurry return pipe; then the entire device is disassembled, and the grouting is completed. In addition, due to the setting of the Tesla valve pipe, even if the pump is stopped or the pressure is lost during the grouting process, the grouting material injected into the grouting hole will not return quickly, which is conducive to avoiding slurry contamination in the slurry storage tank, and is also conducive to ensuring the safety of grouting equipment and personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of a tunnel leakage repair device provided by an embodiment of the present invention;

[0018] Figure 2 A schematic cross-sectional structural diagram of a Tesla valve tube of a tunnel leakage repair device provided by an embodiment of the present invention;

[0019] Figure 3 A partial enlarged view of the cross-sectional structure of a Tesla valve tube of a tunnel leakage repair device provided by another embodiment of the present invention;

[0020] Figure 4 A schematic cross-sectional structural diagram of an expansion and contraction joint of a tunnel leakage repair device provided in an embodiment of the present invention.

[0021] Among them, the reference numerals in the figures are as follows:

[0022] 10. Slurry storage tank; 11. Buffer box; 20. Grouting pump; 30. Slurry pumping pipe;

[0023] 40. Tesla valve tube; 41. Cleaning hole; 42. External beam tube; 43. Double-layer spring with holes;

[0024] A, A port; B, B port; C, C port;

[0025] 50, slurry inlet pipe; 60, slurry return pipe;

[0026] 70, expansion and contraction joint; 71, hard neck shrinkage tube; 711, neck shrinkage structure; 712, through hole; 713, tightening groove; 72, elastic expansion and contraction sleeve; 73, tightening hoop;

[0027] 80. Grouting needle. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0029] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0030] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0031] The directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. The directions or positional relationships indicated by the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0034] The tunnel leakage repairing device provided by the present invention is now described.

[0035] like Figure 1 As shown, the first embodiment of the present invention provides a tunnel leakage repair device, including a slurry storage tank 10, a grouting pump 20, a slurry pumping pipe 30, a Tesla valve pipe 40, a slurry inlet pipe 50, a slurry return pipe 60, an expansion joint 70 and a grouting needle 80, wherein the slurry storage tank 10 is used to store grouting material; the grouting pump 20 is connected to the slurry storage tank 10 to extract the grouting material; one end of the slurry pumping pipe 30 is connected to the grouting pump 20; the two ends of the Tesla valve pipe 40 are respectively A port and B port, and the middle part is provided with C port, and the direction from A port to B port is a low resistance downstream direction, and the direction from B port to Port A is in the countercurrent direction with high resistance, and port C is connected to the other end of the slurry pumping pipe 30; one end of the slurry inlet pipe 50 is connected to port B of the Tesla valve pipe 40; one end of the slurry return pipe 60 is connected to port A of the Tesla valve pipe 40, and the other end is connected to the slurry storage tank 10, and is used to be immersed below the liquid surface of the grouting material; the expansion and contraction joint 70 is arranged on the slurry return pipe 60, and expands when the pressure inside the slurry return pipe 60 is higher than the first preset pressure, and contracts when it is lower than the second preset pressure; the grouting needle 80 is connected to the other end of the slurry inlet pipe 50, and is used to be inserted into the grouting hole.

[0036] The Tesla valve tube 40 is a component formed by adding a C port connected to the middle of the inner cavity on the Tesla valve. The Tesla valve is a one-way conducting fluid valve without any moving parts. Since the Tesla valve is provided with multiple annular rotating channels, the fluid encounters relatively little resistance when passing through the Tesla valve in the forward direction and can pass smoothly; while when passing through the Tesla valve in the reverse direction, the fluid will recoil when passing through the rotating channel, making the resistance very large and difficult to pass smoothly, and the greater the flow rate of the passing fluid, the greater the resistance.

[0037] When in use, after the entire device is connected, add an appropriate amount of grouting material into the slurry storage tank 10, and install the grouting needle 80 into the grouting hole that has been drilled;

[0038] Then, the grouting pump 20 is started, and the grouting material is pumped into the Tesla valve pipe 40 from the C port through the slurry pumping pipe 30. Since the pressure in the grouting hole is relatively low in the initial stage of grouting, the grouting material injected from the C port enters the Tesla valve pipe 40 at a high flow rate, so that a Venturi effect is formed in the Tesla valve pipe 40. As a result, while the grouting material flows from the C port to the B port, a negative pressure is formed at the A port, so that the slurry return pipe 60 also absorbs the grouting material from the slurry storage tank 10, flows from the A port to the B port, and finally enters the grouting hole through the slurry inlet pipe 50 and the grouting needle 80. At the same time, since there is a negative pressure in the slurry return pipe 60, the expansion and contraction joint 70 is in a contracted state, which can improve the grouting efficiency in the initial stage of grouting.

[0039] As the grouting proceeds, the grouting material gradually fills the grouting holes, cracks and cavities, and the pressure grouting in the grouting hole slurry inlet pipe 50 and the B port of the Tesla valve pipe 40 increases, so that the flow rate of the grouting material from the C port to the B port decreases until the negative pressure is no longer formed at the A port.

[0040] The grouting continues, and the grouting material entering from the C port will be divided into two parts. One part will continue to enter the slurry inlet pipe 50 from the B port and be poured into the grouting hole, and the other part will enter the slurry return pipe 60 from the A port and flow back to the slurry storage tank 10. At the same time, since the slurry return pipe 60 becomes a positive pressure state, the expansion joint 70 will expand.

[0041] As grouting continues, more and more grouting material entering from port C will enter the slurry return pipe 60 from port A. As the flow rate of the grouting material increases, the flow velocity also increases, and the resistance encountered will also increase rapidly. On the one hand, the flow velocity of the grouting material flowing out of port A will not be too large, thereby avoiding the grouting material in the slurry storage tank 10 from gushing and splashing. On the other hand, the grouting pressure at port A can be slowly increased in the later stage of grouting, avoiding too rapid an increase in pressure at the grouting point.

[0042] The operator only needs to hold the expansion joint 70 to feel the expansion and contraction changes, or observe the changes in the appearance of the expansion joint 70, so that he can know the current grouting status more easily through the expansion and contraction. When the expansion joint 70 expands to a certain state, the grouting pump 20 can be turned off in time or other operations can be taken, which can improve the timeliness of the operation and is not easy to be neglected; after turning off the grouting pump 20, the grouting material remaining in the slurry pumping pipe 30 and the slurry inlet pipe 50 due to the pressure will return to the slurry storage tank 10 through the slurry return pipe 60; then the entire device is disassembled to complete the grouting.

[0043] In addition, due to the setting of the Tesla valve tube 40, even if the pump stops or the pressure is lost during the grouting process, the grouting material injected into the grouting hole will not return quickly, which is beneficial to avoid slurry contamination in the slurry storage tank 10 and also beneficial to ensure the safety of grouting equipment and personnel.

[0044] like Figures 1 to 4 As shown, a specific implementation mode provided by the present invention based on the first implementation mode is as follows:

[0045] The communication channel between port A and port B of the Tesla valve tube 40 is a Tesla valve structure, and port C is connected to the communication channel between port A and port B through an oblique channel inclined toward port B, forming a Venturi tube structure.

[0046] like Figure 3As shown, in order to enhance the effect of the venturi tube structure, a double-layer perforated spring sheet 43 can be provided on the side of the connection between the oblique channel and the connecting channel toward the B port. The double-layer perforated spring sheet 43 is a structure formed by fixing the two ends of two layers of curved spring sheets, and the bending degrees of the two layers of spring sheets are different, so that a cavity is formed between the two layers of spring sheets, and through holes are provided on the two layers of spring sheets. The spring sheets located on the outer layer protrude outward, so that the flow channel becomes narrower when the oblique channel enters the connecting channel. The spring sheets located on the inner layer are naturally at the top of the d in the figure, and when the flow velocity at e is higher, it leaves the d, so that the grouting material flows directly between the inner layer spring sheet and the d. This structure can enhance the negative pressure at the B port end without affecting the use effect when changing to different C ports.

[0047] The diameter of the tube from port A to port C of the Tesla valve tube 40 is larger than the diameter of the tube from port C to port B, so as to improve the slurry return efficiency of the slurry return pipe 60. The diameter of the tube from port C to port B of the Tesla valve tube 40 is larger than the inner diameter of port C of the Tesla valve tube 40, so as to improve the grouting efficiency.

[0048] A plurality of C ports are provided in the middle of the slurry pumping pipe 30 along the direction from port A to port B. The slurry pumping pipe 30 is connected to one of the C ports, and the other C ports are closed so that a suitable C port can be selected to be connected to the slurry pumping pipe 30 as needed to adjust the return liquid pressure of the slurry return pipe 60, thereby adjusting the maximum pressure of the slurry inlet pipe 50.

[0049] A buffer box 11 is provided at the lower part of the slurry storage tank 10. One side of the buffer box 11 is connected to the slurry storage tank 10 through a filter. The liquid inlet end of the grouting pump 20 and the slurry return pipe 60 are both connected to the buffer box 11. This not only prevents external large particles of impurities from entering the grouting pump 20, but also allows the grouting material returned from the slurry return pipe 60 to enter the grouting pump 20 again first, thereby reducing the possibility of contaminating the grouting material in other parts of the slurry storage tank 10.

[0050] The expansion and contraction joint 70 includes a hard necked tube 71 and an elastic expansion and contraction sleeve 72. The hard necked tube 71 is arranged on the slurry return pipe 60, and a necking structure 711 is provided in the middle, and through holes 712 are provided on both sides of the necking structure 711; the elastic expansion and contraction sleeve 72 is sleeved on the hard necked tube 71, and covers the necking structure 711 and the through hole 712, and the two ends are sealed and connected to the two ends of the hard necked tube 71.

[0051] In the early stage of grouting, there is negative pressure in the hard neck tube 71, and the elastic expansion and contraction sleeve 72 contracts and sticks to the outside of the hard neck tube 71. The hard neck tube 71 can support the elastic expansion and contraction sleeve 72 to ensure the passage of the grouting material and cause the elastic expansion and contraction sleeve 72 to contract, resulting in an obvious depression on the outside. In the later stage of grouting, there is positive pressure in the hard neck tube 71, and since the necking structure 711 reduces the passing capacity of the grouting material, some of the grouting material will flow from the through hole 712 on one side of the necking structure 711 to between the hard neck tube 71 and the elastic expansion and contraction sleeve 72, and prop up the elastic expansion and contraction sleeve 72, causing the elastic expansion and contraction sleeve 72 to expand, and then return to the hard neck tube 71 from the through hole 712 on the other side of the necking structure 711.

[0052] Both ends of the rigid neck tube 71 are provided with tightening grooves 713, the slurry return pipe 60 and the elastic expansion sleeve 72 both cross the tightening grooves 713, and are detachably fastened and sealed by the tightening hoop 73. This makes it easy to disassemble, clean and seal the expansion joint 70.

[0053] The elastic expansion and contraction sleeve 72 is provided with a plurality of fluorescent line coatings arranged in parallel on the outside, so as to facilitate observation of the shape change of the elastic expansion and contraction sleeve 72 in a dimly lit environment.

[0054] A connecting groove connecting the through holes 712 on both sides of the necking structure 711 is also provided on the outside of the necking structure 711 , so that a small amount of grouting material can pass through the connecting groove to prevent the elastic expansion sleeve 72 from adhering to the hard necking tube 71 .

[0055] A plurality of cleaning holes 41 are provided on the Tesla valve tube 40 , and the cleaning holes 41 are connected to the loop structure inside the Tesla valve tube 40 . An outer bundle tube 42 is also provided outside the Tesla valve tube 40 to limit the plug in the cleaning hole 41 and seal the cleaning hole 41 .

[0056] After use, the outer bundle tube 42 can be opened, the plug can be taken out, and water can be passed into the Tesla valve tube 40 to flush out the residual grouting material in the loop structure of the Tesla valve tube 40. In order to prevent the plug from entering the interior of the Tesla valve tube 40, the cleaning hole 41 can adopt a conical hole.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tunnel leakage repair device, characterized in that: include: A slurry storage tank (10) for storing grouting material; A grouting pump (20) connected to the slurry storage tank (10) for extracting grouting material; A slurry pumping pipe (30), one end of which is connected to the grouting pump (20); A Tesla valve pipe (40) having port A and port B at both ends, a port C in the middle, and a flow direction from port A to port B with low resistance, and a flow direction from port B to port A with high resistance, and the port C is connected to the other end of the slurry pumping pipe (30); A slurry inlet pipe (50), one end of which is connected to the B port of the Tesla valve pipe (40); A slurry return pipe (60), one end of which is connected to the port A of the Tesla valve pipe (40), and the other end of which is connected to the slurry storage tank (10) and is used to be immersed below the liquid surface of the grouting material; An expansion and contraction joint (70) is provided on the slurry return pipe (60) and expands when the pressure inside the slurry return pipe (60) is higher than a first preset pressure, and contracts when the pressure inside the slurry return pipe (60) is lower than a second preset pressure; The grouting needle (80) is connected to the other end of the slurry inlet pipe (50) and is used for being inserted into the grouting hole.

2. The tunnel leakage repair device according to claim 1, characterized in that: The communication channel between port A and port B of the Tesla valve tube (40) is a Tesla valve structure, and port C is connected to the communication channel between port A and port B via an oblique channel inclined toward port B, forming a Venturi tube structure.

3. The tunnel leakage repair device according to claim 1, characterized in that: The diameter of the Tesla valve tube (40) from port A to port C is greater than the diameter of the Tesla valve tube (40) from port C to port B, and the diameter of the Tesla valve tube (40) from port C to port B is greater than the inner diameter of port C of the Tesla valve tube (40).

4. The tunnel leakage repair device according to claim 1, characterized in that: The middle part of the slurry pumping pipe (30) is provided with a plurality of C ports along the direction from the A port to the B port, the slurry pumping pipe (30) is connected to one of the C ports, and the remaining C ports are closed.

5. The tunnel leakage repair device according to claim 1, characterized in that: A buffer box (11) is provided at the lower part of the slurry storage tank (10); one side of the buffer box (11) is connected to the slurry storage tank (10) via a filter screen; the liquid inlet end of the grouting pump (20) and the slurry return pipe (60) are both connected to the buffer box (11).

6. The tunnel leakage repair device according to claim 1, characterized in that: The expansion joint (70) comprises: A hard necked tube (71) is provided on the slurry return tube (60), and a necked structure (711) is provided in the middle, and through holes (712) are provided on both sides of the necked structure (711); The elastic expansion sleeve (72) is sleeved on the hard necked tube (71) and covers the necked structure (711) and the through hole (712), and two ends are sealedly connected to two ends of the hard necked tube (71).

7. The tunnel leakage repair device according to claim 6, characterized in that: Both ends of the hard necked tube (71) are provided with tightening grooves (713); the slurry return tube (60) and the elastic expansion sleeve (72) both span the tightening grooves (713) and are detachably fastened and sealed by a tightening hoop (73).

8. The tunnel leakage repair device according to claim 6, characterized in that: The elastic expansion and contraction sleeve (72) is provided with a plurality of fluorescent line coatings arranged in parallel on the outside.

9. The tunnel leakage repair device according to claim 6, characterized in that: The necking structure (711) is also provided with a connecting groove on the outside thereof, which connects the through holes (712) on both sides of the necking structure (711).

10. The tunnel leakage repair device according to claim 1, characterized in that: The Tesla valve tube (40) is provided with a plurality of cleaning holes (41), the cleaning holes (41) being connected to the loop structure inside the Tesla valve tube (40), and an outer binding tube (42) is also provided outside the Tesla valve tube (40) to limit the stopper in the cleaning hole (41) and seal the cleaning hole (41).

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