Bag and method for leaking stoppage of side wall of roadway

Abstract

The invention provides a bag and a roadway side wall plugging method, the bag is used for plugging an air leakage channel of a roadway side wall, the bag comprises a bag body made of a flexible material, the bag body is provided with a cavity, and the bag body has a filling state and a contraction state which are oppositely arranged; the air inlet and the air outlet are both formed in the bag body, a first control valve is arranged at the air inlet, a blocking piece is arranged at the air outlet, and when the first control valve is opened to inflate the bag body, the blocking piece blocks the air outlet so that the bag body can be switched from the contraction state to the filling state; and the grouting opening is formed in the bag body, a second control valve is arranged at the grouting opening, and the grouting opening is used for grouting the bag body in the filling state. By means of the technical scheme, the problem that in the prior art, the roadway side wall leaking stoppage effect is poor can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining, and in particular to a method for plugging leakage of a bag and a tunnel side wall. Background Art

[0002] A large amount of air leakage in the goaf area of ​​a coal mine is one of the main reasons for the spontaneous combustion of coal in the mine area. When there is no collapse or incomplete collapse in the goaf area of ​​two lanes, a triangular air leakage area will be formed. The cracks on the side walls of the lanes will form air leakage channels. The air leakage in the triangular air leakage area has a considerable adverse effect on the fire prevention and extinguishing work in the goaf area. In order to effectively control the air leakage in the triangular zone lanes in the prior art, bags are usually used to block the air leakage channels on the side walls of the lanes.

[0003] At present, the bag is usually suspended in the plugging area behind the frame, and a grouting interface is opened at an appropriate position on the bag, which is then connected to the grouting pipeline and filled with plastic filling materials. After the filling materials are solidified, the bag structure is kept stable to achieve the expected plugging goal. However, it takes a certain amount of time for the traditional bag to solidify. When the filling materials are not solidified, the bag will remain in a relatively soft state. The collapse of the rock blocks on the top and side walls of the tunnel will affect the shape of the bag, causing the expected shape of the filling material in the bag to change after solidification, and the plugging effect on the air leakage channel on the side walls of the tunnel is poor. Summary of the invention

[0004] The invention provides a bag and a method for plugging leakage of a tunnel side wall, so as to solve the problem that the tunnel side wall plugging effect is poor in the prior art.

[0005] According to one aspect of the present invention, there is provided a bag, which is used to block air leakage channels on the side walls of tunnels, and the bag comprises: a bag body, which is made of a flexible material, and has a chamber, and the bag body has a relatively set filling state and a contraction state; an air inlet and an exhaust port, which are both arranged on the bag body, and a first control valve is arranged at the air inlet, and a sealing member is arranged at the exhaust port, and when the first control valve is opened to inflate the bag body, the sealing member blocks the exhaust port to switch the bag body from the contraction state to the filling state; a grouting port, which is arranged on the bag body, and a second control valve is arranged at the grouting port, and the grouting port is used to grout into the bag body in the filling state.

[0006] Furthermore, the bag body has a bottom wall and a first side wall, a second side wall, a third side wall and a fourth side wall connected in sequence, the first side wall, the second side wall, the third side wall and the fourth side wall are mutually arranged and cooperate with the bottom wall to form a chamber, the first side wall is fixedly connected to the side wall of the alley, and the bottom wall abuts against the bottom plate of the alley.

[0007] Furthermore, in the height direction, the area of ​​the cross section of the bag body perpendicular to the height direction gradually decreases from the bottom to the top.

[0008] Furthermore, the bag has a plurality of reinforcement frames, which are arranged in a ring shape on the inner wall of the chamber, and the plurality of reinforcement frames are arranged at intervals along the height direction.

[0009] Furthermore, a hanging rod is arranged at the top of the bag body, and a plurality of hooks are arranged on the hanging rod at intervals along the extension direction of the lane.

[0010] Furthermore, a plurality of air inlets and grouting ports are provided, and air inlets and grouting ports are provided on side walls of the bag body that are arranged opposite to each other along the extension direction of the tunnel.

[0011] Furthermore, a gas separation membrane is provided at the exhaust port, and the gas separation membrane is used to allow the gas to pass through the gas separation membrane and can block the slurry in the chamber from flowing out.

[0012] According to another aspect of the present invention, a method for plugging leakage in a tunnel sidewall is provided. The method for plugging leakage in a tunnel sidewall uses a bladder bag disposed at the sidewall of the tunnel to seal the gap in the tunnel sidewall. The bladder bag is the bladder bag described above.

[0013] Furthermore, the method for plugging leakage on the tunnel sidewall specifically includes:

[0014] Step 1: Fix the bag between the side wall of the tunnel and the bottom plate of the tunnel;

[0015] Step 2: Open the first control valve, close the second control valve, and block the exhaust port to inflate the bag body of the pouch so that the bag body switches to a filled state, and stop inflating when the air pressure in the chamber is greater than a preset value;

[0016] Step 3: Close the first control valve, open the second control valve and the exhaust port to inject grout into the bag body, and stop injecting grout after the slurry fills 95% of the chamber volume.

[0017] Furthermore, the bag body has a bottom wall, which is in contact with the bottom plate. Step one specifically includes: fixing the side edge of the bottom wall away from the side wall of the tunnel to the bottom plate of the tunnel by fasteners, and the distance between the side edge and the side wall of the tunnel is smaller than the width dimension of the bag body in the filled state.

[0018] By applying the technical solution of the present application, the bag includes a bag body, an air inlet, an exhaust port and a grouting port. After the bag is fixed in the tunnel, the first control valve can be opened to inflate the bag body, so that the bag body is switched to a filling state, and the bag body is quickly filled and formed. After the inflation is completed, the first control valve is closed to prevent the gas in the bag body from leaking out. When the bag body is in the filling state, the interior of the cavity has a certain pressure, so that the bag as a whole has a certain pressure-bearing performance, and the collapse of rock blocks on the top and side walls of the tunnel will not cause excessive deformation of the bag; and, because the bag body is made of flexible material, even if the rock blocks on the top and side walls of the tunnel collapse, causing the direction of the cracks to change, the bag body can still stick to the cracks under the action of the gas in the cavity, adapt to the shape of the cracks, and provide a better sealing effect for the cracks. After the inflation is completed, the second control valve is opened at the same time, the sealing piece set at the exhaust port is removed, and grouting is injected into the bag body. As the slurry enters the chamber, the gas will be discharged from the exhaust port, and the slurry can enter the chamber smoothly. After the grouting is completed and solidified, the bag can have a certain stability to provide a better sealing effect on the side wall of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of the structure of the pouch provided by the present invention is shown;

[0021] Figure 2 A schematic diagram showing the installation position of the bladder provided by the present invention.

[0022] The above drawings include the following reference numerals:

[0023] 01. Laneway;

[0024] 100. Bag body;

[0025] 110, first side wall; 120, second side wall; 130, third side wall; 140, fourth side wall; 150, bottom wall;

[0026] 160, reinforcement frame; 170, hanging rod;

[0027] 200, air inlet; 210, first control valve;

[0028] 300, exhaust port;

[0029] 400, grouting port; 410, second control valve. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1 As shown, an embodiment of the present invention provides a bag, which is used to block the air leakage channel of the side wall of the coal mine tunnel 01, and the bag includes a bag body 100, an air inlet 200, an exhaust port 300 and a grouting port 400. Among them, the bag body 100 is made of a flexible material, the bag body 100 has a chamber, and the bag body 100 has a relatively set filling state and a contraction state. The air inlet 200 and the exhaust port 300 are both arranged on the bag body 100, and a first control valve 210 is arranged at the air inlet 200, and a blocking member is arranged at the exhaust port 300. When the first control valve 210 is opened to inflate the bag body 100, the blocking member blocks the exhaust port 300, so that the bag body 100 switches from the contraction state to the filling state. The grouting port 400 is arranged on the bag body 100, and a second control valve 410 is arranged at the grouting port 400. The grouting port 400 is used to grout the bag body 100 in the filling state.

[0032] By applying the technical solution of the present application, the bag includes a bag body 100, an air inlet 200, an exhaust port 300 and a grouting port 400. After the bag is fixed in the tunnel 01, the first control valve 210 can be opened to inflate the bag body 100, so that the bag body 100 is switched to a filling state, and the bag body 100 is quickly filled and formed. After the inflation is completed, the first control valve 210 is closed to prevent the gas in the bag body 100 from leaking out. When the bag body 100 is in the filling state, the interior of the cavity has a certain pressure, so that the bag as a whole has a certain pressure-bearing performance, and the collapse of the rock blocks on the top and side walls of the tunnel will not cause excessive deformation of the bag; and, because the bag body 100 is made of flexible material, even if the rock blocks on the top and side walls of the tunnel collapse, resulting in a change in the direction of the cracks, the bag body 100 can still stick to the cracks under the action of the gas in the cavity, adapt to the shape of the cracks, and provide a better sealing effect for the cracks. After the inflation is completed, the second control valve 410 is opened at the same time, the sealing piece set at the exhaust port 300 is removed, and grouting is injected into the bag body 100. As the slurry enters the chamber, the gas will be discharged from the exhaust port 300, and the slurry can smoothly enter the chamber. After the grouting is completed and solidified, the bag can have a certain stability to provide a better sealing effect on the side wall of the tunnel 01.

[0033] Furthermore, in order to ensure the stability of the bag, the sealing member can be placed back at the exhaust port 300 during the solidification of the slurry in the bag to ensure that the slurry still has a certain pressure in the cavity during the solidification process, thereby improving the pressure-bearing effect of the bag.

[0034] In the traditional technical solution, the bag is usually suspended in the sealing area behind the frame, and a grouting interface is opened at an appropriate position on the bag, which is then connected to the grouting pipeline and filled with plastic filling material. However, the traditional bag is very dangerous due to the complex hanging process when the roof rock is weak and the distance between the upper and lower adjacent goafs is close. In addition, the mining height is large, and the operation is time-consuming and laborious.

[0035] In order to reduce the impact of the bag on the top plate of the lane, the bag body 100 provided in the present application has a bottom wall 150 and a first side wall 110, a second side wall 120, a third side wall 130 and a fourth side wall 140 connected in sequence. The first side wall 110, the second side wall 120, the third side wall 130 and the fourth side wall 140 are mutually surrounded and cooperate with the bottom wall 150 to form a chamber. The first side wall 110 is fixedly connected to the side wall of the lane 01, and the bottom wall 150 abuts against the bottom plate of the lane 01. In the present application, by placing the bag on the bottom plate and setting the first side wall 110 to abut against the side wall of the lane 01, the load on the top plate of the lane 01 caused by the bag hanging on the top plate is avoided, and while ensuring that the first side wall 110 can provide a blocking effect for the lane 01, the impact of the bag on the stability of the lane 01 is reduced.

[0036] Specifically in the present application, in the height direction, the area of ​​the cross section of the bag body 100 perpendicular to the height direction gradually decreases from the bottom to the top. Through the above arrangement, the center of gravity of the bag can be set at the lower middle part of the bag, thereby improving the stability of the bag placed in the lane 01 and preventing the bag from tipping over.

[0037] In a specific embodiment of the present application, the second side wall 120 and the fourth side wall 140 relatively arranged along the extension direction of the alley 01 can be set to a right triangle, one right-angled side of the right triangle is coplanar with the first side wall 110, and the other right-angled side is coplanar with the bottom wall 150. Correspondingly, the four side edges of the fourth side wall 140 are respectively connected to the first side wall 110, the second side wall 120, the third side wall 130 and the bottom wall 150 to ensure that the first side wall 110 abuts against the side wall of the alley 01 and the bottom wall 150 abuts against the bottom plate of the alley 01, thereby ensuring the stability of the bag placement and the blocking effect on the side wall of the alley 01.

[0038] In another specific embodiment of the present application, the second side wall 120 and the fourth side wall 140 relatively arranged along the extension direction of the alley 01 can be set to a right-angled trapezoid, one right-angled side of the right-angled trapezoid is coplanar with the first side wall 110, and the other right-angled side is coplanar with the bottom wall 150. At this time, the bag body 100 also has a top wall, and correspondingly, the four side edges of the fourth side wall 140 are respectively connected to the top wall, the second side wall 120, the third side wall 130 and the bottom wall 150 to ensure that the first side wall 110 abuts against the side wall of the alley 01, and the bottom wall 150 abuts against the bottom plate of the alley 01, thereby ensuring the stability of the bag placement and the blocking effect on the side wall of the alley 01.

[0039] Furthermore, the bag has a plurality of reinforcing frames 160, which are arranged in an annular shape on the inner wall of the chamber, and are arranged at intervals along the height direction. Through the above arrangement, the reinforcing frames 160 can maintain the structural stability of the plurality of side walls of the bag body 100, prevent the bag from being over-bulged after being inflated, thereby improving the shape of the bag from being over-deformed, and ensuring the sealing effect of the bag.

[0040] Furthermore, the bag body 100 is more convenient to fold and carry when in the contracted state due to the provision of multiple reinforcement frames 160. In the present application, multiple drag handles may also be provided on the surface of the bag to facilitate transportation and movement of the bag.

[0041] Specifically in the present application, a hanging rod 170 is provided at the top of the bag body 100, and a plurality of hooks are provided on the hanging rod 170 at intervals along the extension direction of the tunnel 01. Through the above arrangement, the bag body can be hung on the protective net of the side wall of the tunnel 01 through the hooks on the hanging rod 170. Compared with the traditional solution of installing with anchor bolts, this can reduce the influence of fasteners on the stability of the tunnel surrounding rock, and can also improve the installation efficiency of the bag.

[0042] Furthermore, a plurality of hanging rods 170 may be provided along the height direction of the bag body 100 to improve the stability of the connection between the bag body 100 and the side wall of the lane 01 .

[0043] Specifically, a plurality of air inlets 200 and grouting ports 400 are provided, and air inlets 200 and grouting ports 400 are provided on the side walls of the bag body 100 that are arranged opposite to each other along the extension direction of the tunnel 01. Figure 2 As shown, the bags provided in the present application can be installed at the air intake and return air tunnels in coal mines to seal cracks. By arranging air inlets 200 and grouting ports 400 on the side walls of the bag body 100 that are relatively arranged along the extension direction of the tunnel 01, the applicability of the bag can be improved, and the grouting pipe and the inflation pipe do not need to be bent from other directions to connect to the bag.

[0044] In a specific embodiment of the present application, a gas separation membrane is provided at the exhaust port 300, and the gas separation membrane is used to allow gas to pass through the gas separation membrane and can block the slurry in the chamber from flowing out. Through the above arrangement, when grouting into the bag body 100, the gas can pass through the gas separation membrane and discharge from the chamber, while the slurry will not leak out, so as to prevent the slurry from flowing out and ensure the grouting effect.

[0045] According to another aspect of the present application, a method for plugging leakage in a tunnel sidewall is provided. The method for plugging leakage in a tunnel sidewall uses a bag set at the sidewall of the tunnel 01 to seal the gap in the sidewall of the tunnel 01. The bag is the above-mentioned bag.

[0046] By setting the above-mentioned bags in the triangular leakage area during coal mining, the air leakage effect can be improved and the risk of spontaneous combustion in the goaf can be reduced. The construction of the bags can be carried out at equal distances along the direction of advancement of the working face, and the relevant parameters are set according to the actual conditions of different mines and working faces.

[0047] Specifically, the method for plugging leakage on the tunnel side wall includes:

[0048] Step 1: Fix the bag between the side wall of tunnel 01 and the bottom plate of tunnel 01 to reduce the influence of the bag on the stability of the top plate of tunnel 01.

[0049] Step 2: Open the first control valve 210, close the second control valve 410, and seal the exhaust port 300 to inflate the bag body 100 of the bag, so that the bag body 100 switches to the filled state, and when the air pressure in the chamber is greater than a preset value, stop inflating. Through the above-mentioned setting, the bag body 100 can be close to the side wall of the tunnel 01, so that the bag body 100 can adapt to the deformation of the side wall of the tunnel 01, thereby improving the sealing effect of the bag and maintaining the structural stability of the bag body 100.

[0050] Specifically, the rated value of the air pressure in the chamber may be 10 kPa, 12 kPa or 14 kPa, etc., which may be selected according to the volume of the sac.

[0051] Step 3: Close the first control valve 210, open the second control valve 410 and the exhaust port 300, and inject grout into the bag body 100. After the slurry fills 95% of the volume of the chamber, stop injecting grout. Through the above arrangement, the structural stability of the bag can be improved by injecting grout into the bag body 100 after the slurry solidifies, and the bag can be prevented from being deformed and reducing the plugging effect. After the slurry fills 95% of the volume of the chamber, stopping the grouting can make some gas still remain in the bag during the solidification of the slurry, making the bag less likely to deform. After the slurry solidifies, the solidification of the slurry will cause the volume to expand. Stopping the grouting after the slurry fills 95% of the volume of the chamber can also prevent the bag from being excessively deformed and ruptured.

[0052] Specifically, the percentage of the cavity volume filled with the slurry can be selected according to the volume expansion coefficient of different filling materials when solidified.

[0053] Furthermore, step one specifically includes: fixing the side edge of the bottom wall 150 away from the side wall of the lane 01 on the bottom plate of the lane 01 by fasteners, and the distance between the side edge and the side wall of the lane 01 is less than the width dimension of the bag body 100 in the filled state. Through the above arrangement, after the bag body 100 is inflated and switched to the filled state, the force applied by the bag body 100 to the side wall of the lane 01 can be increased to prevent the side wall between the bag body 100 and the lane 01 from being spaced, so as to ensure the blocking effect of the bag. In addition, since the bag body 100 is made of flexible material, the bottom wall 150 of the bag body 100 can also be stably placed on the bottom plate of the lane 01 after grouting.

[0054] Specifically in the present application, an air intake pipe can be provided at the air inlet 200, and the first control valve 210 is provided on the air intake pipe. The air intake pipe is connected to the wind pressure pipeline of the coal mine tunnel, and the existing air inlet and return pipelines in the coal mine are used for inflation, without the need for additional inflation equipment.

[0055] Specifically in the present application, a flow pipe may be provided at the grouting port 400, the second control valve 410 is provided on the flow pipe, the flow pipe is connected to the grouting pipeline of the coal mine tunnel, and grouting is performed using the existing grouting pipeline underground in the coal mine.

[0056] Optionally, the first control valve 210 and the second control valve 410 can be selected as stop valves to control the on-off of the grouting pipeline and the inflation pipeline.

[0057] Optionally, the first control valve 210 and the second control valve 410 may also be flow control valves to control the speed of inflation and grouting.

[0058] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0059] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0060] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0061] 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" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0062] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pouch, characterized in that: The bag is used to seal the gap in the side wall of the tunnel (01), and the bag comprises: A bag body (100) is made of a flexible material, the bag body (100) has a chamber, and the bag body (100) has a filled state and a contracted state that are relatively arranged; an air inlet (200) and an air outlet (300), wherein the air inlet (200) and the air outlet (300) are both arranged on the bag body (100), a first control valve (210) is arranged at the air inlet (200), and a blocking member is arranged at the air outlet (300), and when the first control valve (210) is opened to inflate the bag body (100), the blocking member blocks the air outlet (300), so that the bag body (100) switches from the contracted state to the filled state; A grouting port (400) is arranged on the bag body (100), a second control valve (410) is arranged at the grouting port (400), and the grouting port (400) is used to inject grout into the bag body (100) in the filled state.

2. The pouch according to claim 1, characterized in that: The bag body (100) has a bottom wall (150) and a first side wall (110), a second side wall (120), a third side wall (130) and a fourth side wall (140) connected in sequence, wherein the first side wall (110), the second side wall (120), the third side wall (130) and the fourth side wall (140) are mutually arranged and cooperate with the bottom wall (150) to form the chamber, the first side wall (110) is fixedly connected to the side wall of the lane (01), and the bottom wall (150) is abutted against the bottom plate of the lane (01).

3. The pouch according to claim 2, characterized in that: In the height direction, the area of ​​the cross section of the bag body (100) perpendicular to the height direction gradually decreases from the bottom to the top.

4. The pouch according to claim 2, characterized in that: The bag has a plurality of reinforcement frames (160), the reinforcement frames (160) are arranged in an annular shape on the inner wall of the chamber, and the plurality of reinforcement frames (160) are arranged at intervals along the height direction.

5. The pouch according to claim 2, characterized in that: A hanging rod (170) is arranged at the top end of the bag body (100), and a plurality of hooks are arranged at intervals on the hanging rod (170) along the extension direction of the lane (01).

6. The pouch according to claim 1, wherein: A plurality of the air inlets (200) and the grouting ports (400) are provided, and the air inlets (200) and the grouting ports (400) are provided on the side walls of the bag body (100) that are arranged opposite to each other along the extension direction of the tunnel (01).

7. The pouch according to claim 1, wherein: A gas separation membrane is provided at the exhaust port (300), and the gas separation membrane is used to allow gas to pass through the gas separation membrane and can prevent the slurry in the chamber from flowing out.

8. A method for plugging leakage in a tunnel sidewall, characterized in that: The method for plugging leakage in the side wall of the tunnel uses a bag arranged on the side wall of the tunnel (01) to seal the gap in the side wall of the tunnel (01), and the bag is the bag described in any one of claims 1 to 7.

9. The method for plugging leakage in the tunnel side wall according to claim 8, characterized in that: The method for plugging leakage on the sidewall of the tunnel specifically comprises: Step 1: fixing the bag between the side wall of the tunnel (01) and the bottom plate of the tunnel (01); Step 2: Open the first control valve (210), close the second control valve (410), and block the exhaust port (300) to inflate the bag body (100) of the bag, so that the bag body (100) switches to a filled state, and stop inflating when the air pressure in the chamber is greater than a preset value; Step three: close the first control valve (210), open the second control valve (410) and the exhaust port (300), and inject grout into the bag body (100). After the slurry fills 95% of the chamber volume, stop injecting grout.

10. The method for plugging leakage in the tunnel side wall according to claim 9, characterized in that: The bag body (100) has a bottom wall (150), and the bottom wall (150) is in contact with the bottom plate. The step one specifically comprises: fixing the side edge of the bottom wall (150) away from the side wall of the lane (01) to the bottom plate of the lane (01) by means of fasteners, and the distance between the side edge and the side wall of the lane (01) is smaller than the width dimension of the bag body (100) in the filled state.

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