Water seepage monitoring device for inner wall of shield tunnel

Abstract

The invention relates to a water seepage monitoring device for the inner wall of a shield tunnel. The water seepage monitoring device comprises an isolation sleeve, a clamping part, a monitoring module and a power module. The isolation sleeve is mounted in a pre-buried point formed among end corners of four adjacent shield segment main bodies, the isolation sleeve is provided with a mounting section and a monitoring section which are axially arranged, and a sealing seat is arranged between the mounting section and the monitoring section; the clamping part is arranged on the mounting section, the clamping part comprises an anti-falling supporting rod, the anti-falling supporting rod can stretch and contract relative to the mounting section, and the anti-falling supporting rod is in one-way clamping connection with the shield segment main body when stretching; the monitoring unit comprises a vibration sensor, a humidity sensor and a wireless transmission module, the vibration sensor is located in the sealing seat, the humidity sensor is located in the mounting section, the wireless transmission module is located in the monitoring section, and the vibration sensor and the humidity sensor are electrically connected with the wireless transmission module; the power supply module is used for supplying power to the monitoring module; the water seepage monitoring device can perform monitoring and early warning in advance when water seepage occurs at the depth of the inner wall of the tunnel.

Description

Technical Field

[0001] The present application relates to the technical field of shield tunnels, and in particular to a device for monitoring water seepage on the inner wall of a shield tunnel. Background Art

[0002] A shield tunnel is a tunnel structure constructed using the shield method. It has the characteristics of high mechanization and high construction efficiency. During construction, a shield machine is used to advance underground. The shield shell and segments support the surrounding rocks to prevent collapse into the tunnel. The jack is used to pressurize the rear part and assemble precast concrete segments to form a tunnel structure. When the shield segments are assembled in the tunnel, water seepage is prone to occur on the inner wall of the tunnel. Some water seepage is caused by insufficient grouting and sealing of the shield segments and cracks caused by vibration after the grouting solidifies. In related technologies, visual images are usually used to identify surface water seepage when monitoring water seepage on the inner wall of a tunnel. However, such a monitoring method cannot meet the requirements of comprehensive monitoring of water seepage points and early warning of concealment, which can easily lead to untimely monitoring, affecting the safety of the tunnel lining, and is not convenient for handling the actual segment diseases inside the water seepage points, indirectly increasing the overall cost of maintenance. Summary of the invention

[0003] The present application provides a shield tunnel inner wall water seepage monitoring device, which can timely monitor and give early warning when water seepage occurs deep in the tunnel inner wall, so that personnel can deal with the water seepage points in time, thereby reducing maintenance costs.

[0004] The shield tunnel inner wall water seepage monitoring device provided by the present application comprises: an isolation sleeve, the isolation sleeve is installed in the pre-buried point formed between the end corners of four adjacent shield segments, the isolation sleeve has an axially arranged installation section and a monitoring section, and a sealing seat is provided between the installation section and the monitoring section;

[0005] A clamping portion, the clamping portion is arranged on the installation section, the clamping portion includes an anti-detachment support rod, the anti-detachment support rod can be extended and contracted relative to the installation section, and the anti-detachment support rod is unidirectionally clamped with the shield segment body when extended;

[0006] A monitoring module, wherein the monitoring unit comprises a vibration sensor, a humidity sensor and a wireless transmission module, wherein the vibration sensor is located in the sealing seat, the humidity sensor is located in the mounting section, and the wireless transmission module is located in the monitoring section, and the vibration sensor and the humidity sensor are electrically connected to the wireless transmission module respectively;

[0007] A power supply module, wherein the power supply module is used to supply power to the monitoring module.

[0008] In addition, the shield tunnel inner wall water seepage monitoring device provided in the present application may also have the following additional technical features:

[0009] In an optional solution, the clamping portion also includes a support seat, a guide column and a pushing member, the support seat is arranged at the end of the mounting section, the length direction of the guide column extends along the axial direction of the mounting section and is located in the mounting section, the anti-detachment support rod is movably arranged on the side wall of the guide column, and the pushing member is slidably connected to the guide column and can push the anti-detachment support rod to move.

[0010] In an optional solution, the pushing member includes a sliding push frame and a supporting spring, the sliding push frame is sleeved on a portion of the outer wall of the guide column, one end of the supporting spring abuts against the sliding push frame, and the other end abuts against the sealing seat, and the humidity sensor is arranged on the upper part of the guide column.

[0011] In an optional solution, there are multiple anti-detachment support rods, which are arranged at intervals along the circumference of the guide column. The side wall of the installation section is provided with a grouting guide groove for the anti-detachment support rod to pass through when extending. The grouting guide groove can also allow slurry during grouting to enter the installation section.

[0012] In an optional solution, at least one sealing ring is provided for sealing between the sealing seat and the isolation sleeve, and a locking pressure ring is provided on a side of the sealing seat facing the monitoring section, and the locking pressure ring abuts against the sealing ring.

[0013] In an optional scheme, a sealed hollow seat is provided in the monitoring section, the cross-section of the sealed hollow seat is a T-shaped structure, the bottom of the sealed hollow seat is abutted against the sealing seat, and the end of the sealed hollow seat is connected to the end of the monitoring section; the wireless transmission module is arranged in the sealed hollow seat.

[0014] In an optional solution, the power module includes a battery and a power connection box, the battery is arranged in the monitoring section, the power connection box is arranged in the sealed hollow seat, the end of the sealed hollow seat is provided with a sealing sleeve connected to its inner cavity, and the power connection box is connected to the outside through a wire inserted in the sealing sleeve.

[0015] In an optional solution, the water seepage monitoring device further comprises a directional leakage mechanism, which is disposed in the cavity between the isolation sleeve and the sealing hollow seat, and is capable of adsorbing and directionally discharging the leaking water.

[0016] In an optional scheme, the directional leakage mechanism includes an active drainage pipe, a hollow ring, a rubber elastic ring, a water-permeable pressure ring, a water absorption ring and a particle filter ring; the rubber elastic ring is arranged on the outer wall of the hollow ring at intervals, and the rubber elastic ring can seal the hollow ring and the isolation sleeve, a water-permeable pressure ring is arranged at the end of the hollow ring, the water absorption ring and the particle filter ring are arranged inside the hollow ring, and one end of the active drainage pipe passes through the sealing hollow seat and is connected with the hollow ring.

[0017] In an optional solution, the monitoring module further includes a fluorescent ring and at least one indicator light, and the fluorescent ring and the indicator light are arranged on the outer end wall of the sealed hollow seat.

[0018] The beneficial effects of this application are:

[0019] The shield tunnel inner wall water seepage monitoring device in the present application monitors the high-risk water seepage joints of the shield segments by pre-embedded method. The vibration sensor and humidity sensor perform vibration monitoring and water seepage monitoring respectively. It can conduct timely monitoring and early warning when water seepage occurs deep in the tunnel inner wall, so that personnel can deal with the water seepage points in time, thereby reducing maintenance costs and avoiding water seepage affecting tunnel operation. In addition, the anti-detachment support rod is unidirectionally clamped with the shield segment body, which can effectively improve the pre-embedded strength and stability after the grouting material is solidified and installed.

[0020] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a water seepage monitoring device provided by the present application in a specific embodiment;

[0022] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the water seepage monitoring device;

[0023] Figure 3 for Figure 2 A local enlarged structural diagram of the part;

[0024] Figure 4 for Figure 2 A schematic diagram of the local enlarged structure at B in FIG.

[0025] Figure 5 for Figure 2 A schematic cross-sectional view of the water seepage monitoring device at the anti-detachment support rod;

[0026] Figure 6A schematic structural diagram of a directional leakage mechanism provided in the present application in a specific embodiment;

[0027] Figure 7 for Figure 6 A schematic cross-sectional view of the directional leakage mechanism;

[0028] Figure 8 This is a schematic diagram of the installation structure of the water seepage monitoring device of the present application within the shield segment body.

[0029] Figure numerals: isolation sleeve 1, installation section 11, monitoring section 12, sealing seat 13, grouting guide groove 14, sealing ring 15, locking pressure ring 16, shield segment body 2, embedded point 21, clamping part 3, anti-detachment support rod 31, support seat 32, guide column 33, sliding push frame 34, support spring 35, monitoring module 4, vibration sensor 41, humidity sensor 42, wireless transmission module 43, fluorescent ring 44, indicator light 45, sealing hollow seat 5, sealing sleeve 51, battery 6, electrical box 7, wire 8, directional leakage mechanism 9, active drainage pipe 91, hollow sleeve ring 92, rubber elastic ring 93, water-permeable pressure ring 94, water absorption ring 95, particle filter ring 96.

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0031] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0032] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other technical solutions obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0034] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0035] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0036] like Figure 1-8 As shown, the embodiment of the present application provides a shield tunnel inner wall water seepage monitoring device, which includes an isolation sleeve 1, a clamping portion 3, a monitoring module 4 and a power module. Among them, the isolation sleeve 1 is installed in the pre-buried point 21 formed between the end corners of four adjacent shield segment bodies 2, and the isolation sleeve 1 has an axially arranged installation section 11 and a monitoring section 12, and a sealing seat 13 is provided between the installation section 11 and the monitoring section 12; the clamping portion 3 is provided on the installation section 11, and the clamping portion 3 includes an anti-detachment support rod 31, which can be extended and contracted relative to the installation section 11, and the anti-detachment support rod 31 is unidirectionally clamped with the shield segment body 2 when extended.

[0037] In addition, the monitoring unit includes a vibration sensor 41, a humidity sensor 42 and a wireless transmission module 43. The vibration sensor 41 is located in the sealing seat 13, the humidity sensor 42 is located in the installation section 11, and the wireless transmission module 43 is located in the monitoring section 12. The vibration sensor 41 and the humidity sensor 42 are electrically connected to the wireless transmission module 43 respectively. The vibration of the shield tunnel can be monitored by the vibration sensor 41, and the monitoring data can be wirelessly transmitted through the wireless transmission module 43 to facilitate remote acquisition of tunnel inner wall parameters; the power supply module is used to power the monitoring module 4.

[0038] The shield tunnel inner wall water seepage monitoring device in this embodiment monitors the high-risk water seepage joints of the shield segments by pre-embedded method. The vibration sensor 41 and the humidity sensor 42 perform vibration monitoring and water seepage monitoring respectively. When water seepage occurs deep in the tunnel inner wall, timely monitoring and early warning can be carried out, so that personnel can deal with the water seepage points in time, thereby reducing maintenance costs and preventing water seepage from affecting tunnel operation. In addition, the anti-detachment support rod 31 is unidirectionally clamped with the shield segment body 2, which can effectively improve the pre-embedded strength and stability after the grouting material is cured and installed.

[0039] like Figure 2 and Figure 4-5As shown, in a specific embodiment, the clamping portion 3 further includes a support seat 32, a guide column 33 and a pusher, the support seat 32 is arranged at the end of the mounting section 11, the length direction of the guide column 33 extends along the axial direction of the mounting section 11 and is located in the mounting section 11, the anti-detachment support rod 31 is movably arranged on the side wall of the guide column 33, and the pusher is slidably connected with the guide column 33 and can push the anti-detachment support rod 31 to move. Specifically, the pusher includes a sliding push frame 34 and a support spring 35, the sliding push frame 34 is sleeved on a part of the outer wall of the guide column 33, one end of the support spring 35 abuts against the sliding push frame 34, and the other end abuts against the sealing seat 13, and the humidity sensor 42 is arranged on the upper part of the guide column 33.

[0040] like Figure 4-5 As shown, in a specific embodiment, the number of the anti-dropout support rods 31 is multiple, and the multiple anti-dropout support rods 31 are arranged at intervals along the circumference of the guide column 33. The number of the anti-dropout support rods 31 can be preset according to the diameter of the isolation sleeve 1 and the size of the anti-dropout support rods 31, so this article does not specifically limit the number of the anti-dropout support rods 31. The side wall of the installation section 11 is provided with a grouting guide groove 14 through which the anti-dropout support rods 31 can pass when extending, and the grouting guide groove 14 can also allow slurry during grouting to enter the installation section 11.

[0041] In this embodiment, the sliding push frame 34 slides with the inner side of the guide column 33 under the support of the support spring 35 and simultaneously presses down the multiple anti-detachment support rods 31, so that the multiple anti-detachment support rods 31 are in an unfolded state relative to the axis of the guide column 33, and the upper ends of the multiple anti-detachment support rods 31 are unidirectionally clamped with the shield segment body 2, thereby effectively preventing the isolation sleeve 1 from detaching from the inner side of the embedded point 21, achieving the automatic locking and embedding effect of the isolation sleeve 1, and monitoring the inner wall depth of the tunnel to facilitate early warning of water seepage.

[0042] like Figure 2-3 As shown, in a specific embodiment, at least one sealing ring 15 is provided between the sealing seat 13 and the isolation sleeve 1, and a locking pressure ring 16 is provided on the side of the sealing seat 13 facing the monitoring section 12, and the locking pressure ring 16 abuts against the sealing ring 15. Specifically, two sealing rings 15 are locked by two locking pressure rings 16 on both sides of the sealing seat 13. After the sealing ring 15 is deformed under pressure, it can stably seal between the sealing seat 13 and the isolation sleeve 1, thereby improving the stability of the electrical components in the monitoring section 12. A sealing hollow seat 5 is provided in the monitoring section 12, and the cross section of the sealing hollow seat 5 is a T-shaped structure, and the bottom of the sealing hollow seat 5 abuts against the sealing seat 13, and the end of the sealing hollow seat 5 is connected to the end of the monitoring section 12; the wireless transmission module 43 is provided in the sealing hollow seat 5.

[0043] like Figure 2As shown, in a specific embodiment, the power module includes a battery 6 and a power connection box 7, the battery 6 is arranged in the monitoring section 12, the power connection box 7 is arranged in the sealed hollow seat 5, the end of the sealed hollow seat 5 is provided with a sealing sleeve 51 connected to its inner cavity, and the power connection box 7 is connected to the outside through a wire 8 inserted in the sealing sleeve 51. In addition, the monitoring module 4 also includes a fluorescent ring 44 and at least one indicator light 45, and the fluorescent ring 44 and the indicator light 45 are arranged on the outer end wall of the sealed hollow seat 5. The fluorescent ring 44 and the multiple indicator lights 45 can be used to warn in dim light conditions, and the situation of the monitoring point can be intuitively displayed by changing the light color of the indicator light 45, so that it is convenient for the inspectors to quickly and intuitively check the point and improve the inspection efficiency.

[0044] like Figure 2 and Figure 6-7 As shown, in a specific embodiment, the water seepage monitoring device also includes a directional leakage mechanism 9, which is arranged in the cavity between the isolation sleeve 1 and the sealing hollow seat 5, and the directional leakage mechanism 9 can absorb and directionally discharge the leaked water. The directional leakage mechanism 9 includes an active drainage pipe 91, a hollow sleeve 92, a rubber elastic ring 93, a water-permeable pressure ring 94, a water absorption ring 95 and a particle filter ring 96; the rubber elastic ring 93 is sleeved on the outer wall of the hollow sleeve 92 at intervals, and the rubber elastic ring 93 can seal the hollow sleeve 92 and the isolation sleeve 1, the end of the hollow sleeve 92 is provided with a water-permeable pressure ring 94, the hollow sleeve 92 is provided with a water absorption ring 95 and a particle filter ring 96, and one end of the active drainage pipe 91 passes through the sealing hollow seat and is connected to the hollow sleeve 92.

[0045] Specifically, in the present embodiment, a plurality of rubber elastic rings 93 are fixedly provided on the outer side of the hollow collar 92, so that the hollow collar 92 is connected to the inner wall of the isolation sleeve 1 through the plurality of rubber elastic rings 93, and then the plurality of rubber elastic rings 93 can achieve further sealing while the two sealing rings 15 are sealing, so as to facilitate the effective sealing of the installation of the battery 6 when the sealing ring 15 fails, and keep the leaked water flowing into the particle filter ring 96 and the water absorption ring 95 inside the rubber elastic ring 93 through the water-permeable pressure ring 94, so that the leaked water can be filtered through the particle filter ring 96 to avoid the blockage of the water absorption ring 95 caused by excessive water particles, and the leaked water can be adsorbed by the water absorption ring 95 to reduce the moisture inside the isolation sleeve, and one end of the active drainage pipe 91 passes through the sealing hollow seat and is connected with the hollow collar 92, so that the water exceeding the adsorption amount of the water absorption ring 95 can be diverted to the drainage system of the tunnel through the active drainage pipe 91, so as to realize active and directional drainage operation, and then effectively reduce the water seepage point pressure on the inner wall of the tunnel.

[0046] When the humidity sensor 42 is monitoring water seepage, the leaked water is actively adsorbed and directionally discharged through the directional leakage mechanism 9 fixed between the isolation sleeve 1 and the sealing hollow seat 5. During the adsorption and drainage process, the leaked water can be filtered through the particle filter ring 96 to avoid clogging of the water absorption ring 95 due to excessive water particles. The leaked water can be adsorbed by the water absorption ring 95 to reduce the moisture inside the isolation sleeve, and the water exceeding the adsorption amount of the water absorption ring 95 can be diverted to the drainage system of the tunnel through the active drainage pipe 91, thereby realizing active and directional drainage operations, thereby effectively reducing the water seepage point pressure on the inner wall of the tunnel.

[0047] like Figure 1-8 As shown, during the construction of the shield tunnel, multiple shield segment bodies 2 are assembled along the axis of the shield tunnel to form multiple support rings, and then a pre-buried point 21 is formed between the end corners of each of the four adjacent shield segment bodies 2. When the water seepage monitoring device in the embodiment of the present application is assembled to detect water seepage on the inner wall of the shield tunnel, the water seepage monitoring device can be plugged into the inner side of the pre-buried point 21 before the shield segment body 2 is grout-sealed, specifically:

[0048] The bottom end of the isolation sleeve 1 is welded and fixed to the support seat 32, so that the guide column 33 is positioned and supported by the support seat 32; the bottom end of the sliding push frame 34 is inserted into the middle of the guide column 33 and is in close contact with multiple anti-detachment support rods 31, and the upper end of the sliding push frame 34 is connected to the sealing seat 13 through the support spring 35, and the bottom ends of the multiple anti-detachment support rods 31 all pass through the grouting guide groove 14 and are rotatably connected to the guide column 33 through the column pin, so that the isolation sleeve 1 drives the multiple anti-detachment support rods When 31 is inserted into the inner side of the embedded point 21, the sliding push frame 34 slides with the inner side of the guide column 33 under the support of the support spring 35 and presses down the multiple anti-detachment support rods 31 synchronously. The multiple anti-detachment support rods 31 are in an extended state relative to the axis of the guide column 33. The upper ends of the multiple anti-detachment support rods 31 are unidirectionally clamped with the shield segment body 2, thereby effectively avoiding the separation of the isolation sleeve 1 from the inner side of the embedded point 21, and realizing the automatic locking and embedding effect of the isolation sleeve 1.

[0049] When grouting the connection gaps of multiple shield segment bodies 2, the slurry is injected into the installation section 11 of the isolation sleeve 1 through the grouting guide groove 14, so that the anti-detachment support rod 31 and the sliding push frame 34 can be cured, further improving the stability of the pre-embedded isolation sleeve 1 and avoiding the situation of detachment and falling due to vibration. Two humidity sensors 42 are arranged at the upper end of the guide column 33, so that the bottom ends of the two humidity sensors 42 penetrate the guide column 33 and contact with the slurry, and the power is turned on. The wireless transmission module 43, the power box 7, the vibration sensor 41 and the humidity sensor 42 are electrically connected, and then after the slurry is cured, the two humidity sensors 42 can continuously monitor the water seepage deep in the inner wall of the shield tunnel in real time.

[0050] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A shield tunnel inner wall water seepage monitoring device, characterized in that: include: An isolation sleeve, which is installed in a pre-buried point formed between the end corners of four adjacent shield segments, and has an axially arranged installation section and a monitoring section, with a sealing seat provided between the installation section and the monitoring section; A clamping portion, the clamping portion is arranged on the installation section, the clamping portion includes an anti-detachment support rod, the anti-detachment support rod can be extended and contracted relative to the installation section, and the anti-detachment support rod is unidirectionally clamped with the shield segment body when extended; A monitoring module, wherein the monitoring unit comprises a vibration sensor, a humidity sensor and a wireless transmission module, wherein the vibration sensor is located in the sealing seat, the humidity sensor is located in the mounting section, and the wireless transmission module is located in the monitoring section, and the vibration sensor and the humidity sensor are electrically connected to the wireless transmission module respectively; A power supply module, wherein the power supply module is used to supply power to the monitoring module.

2. The shield tunnel inner wall water seepage monitoring device according to claim 1, characterized in that: The clamping portion also includes a support seat, a guide column and a pushing member, the support seat is arranged at the end of the mounting section, the length direction of the guide column extends along the axial direction of the mounting section and is located in the mounting section, the anti-detachment support rod is movably arranged on the side wall of the guide column, and the pushing member is slidably connected to the guide column and can push the anti-detachment support rod to move.

3. The shield tunnel inner wall water seepage monitoring device according to claim 2, characterized in that: The push member includes a sliding push frame and a supporting spring. The sliding push frame is sleeved on a portion of the outer wall of the guide column. One end of the supporting spring abuts against the sliding push frame, and the other end abuts against the sealing seat. The humidity sensor is arranged on the upper part of the guide column.

4. The shield tunnel inner wall water seepage monitoring device according to claim 2, characterized in that: There are multiple anti-detachment support rods, which are arranged at intervals along the circumference of the guide column. The side wall of the installation section is provided with a grouting guide groove for the anti-detachment support rod to pass through when it is extended. The grouting guide groove can also allow slurry during grouting to enter the installation section.

5. The shield tunnel inner wall water seepage monitoring device according to any one of claims 1 to 4, characterized in that: At least one sealing ring is provided between the sealing seat and the isolation sleeve, and a locking pressure ring is provided on the side of the sealing seat facing the monitoring section, and the locking pressure ring abuts against the sealing ring.

6. The shield tunnel inner wall water seepage monitoring device according to claim 5, characterized in that: A sealed hollow seat is provided in the monitoring section, the cross section of the sealed hollow seat is a T-shaped structure, the bottom of the sealed hollow seat is abutted against the sealing seat, and the end of the sealed hollow seat is connected to the end of the monitoring section; the wireless transmission module is provided in the sealed hollow seat.

7. The shield tunnel inner wall water seepage monitoring device according to claim 6, characterized in that: The power module includes a battery and a power connection box, the battery is arranged in the monitoring section, the power connection box is arranged in the sealed hollow seat, the end of the sealed hollow seat is provided with a sealing sleeve connected to its inner cavity, and the power connection box is connected to the outside through a wire inserted in the sealing sleeve.

8. The shield tunnel inner wall water seepage monitoring device according to claim 6, characterized in that: It also includes a directional leakage mechanism, which is arranged in the cavity between the isolation sleeve and the sealing hollow seat, and can absorb and directionally discharge the leaking water.

9. The shield tunnel inner wall water seepage monitoring device according to claim 8, characterized in that: The directional leakage mechanism includes an active drainage pipe, a hollow sleeve ring, a rubber elastic ring, a water-permeable pressure ring, a water absorption ring and a particle filtering ring; The rubber elastic ring is sleeved on the outer wall of the hollow ring at intervals, and the rubber elastic ring can seal the hollow ring and the isolation sleeve. A water-permeable pressure ring is arranged at the end of the hollow ring, and the water absorption ring and the particle filter ring are arranged inside the hollow ring. One end of the active drainage pipe passes through the sealing hollow seat and is connected with the hollow ring.

10. The device for monitoring water seepage on the inner wall of a shield tunnel according to any one of claims 6 to 9, characterized in that: The monitoring module further comprises a fluorescent ring and at least one indicator light, and the fluorescent ring and the indicator light are arranged on the outer end wall of the sealed hollow seat.

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