An intelligent monitoring system for leakage of tunnel segments

Abstract

The present invention discloses an intelligent monitoring system for leakage of tunnel segments, which includes a plurality of leakage sensors and a main control device; both the leakage sensors and the main control device are connected to the inner wall of the tunnel segments; the leakage sensors are used to generate electrical signals when leakage occurs on the inner wall of the tunnel segments; the main control device connects the leakage sensors with external intelligent terminal devices. When leakage occurs, the leakage sensors transmit corresponding electrical signals to the external intelligent terminal devices through the main control device, and the external intelligent terminal devices can then learn that there is a leakage situation inside the tunnel segments. The intelligent monitoring system for leakage of tunnel segments of the present invention can accurately and effectively detect whether there is a leakage phenomenon inside the tunnel segments during the construction and operation processes, facilitate the staff to understand the leakage situation inside the tunnel at any time, and make a timely response and treatment, providing a technical basis for the reasonable maintenance of the tunnel.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel engineering monitoring, and in particular to an intelligent monitoring system for water leakage of tunnel segments. Background Art

[0002] As the available ground space in cities becomes saturated, underground space infrastructure will increase day by day. In the process of underground space infrastructure construction, since most subway tunnels are located below the groundwater level, water leakage frequently occurs in operating subway tunnels, and its harm will affect the structural stability of the tunnel and the service life of the tunnel. Therefore, it is essential to effectively prevent and control water leakage in the tunnel. However, since the tunnel segments are buried deep underground, the staff cannot timely know whether water leaks into the pipeline from the joints of two adjacent tunnel segments.

[0003] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0004] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a tunnel segment water leakage intelligent monitoring system is provided, which aims to intelligently monitor whether the tunnel segment is leaking water.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0006] A tunnel segment water leakage intelligent monitoring system comprises a plurality of water leakage sensors and a main control device; the water leakage sensors and the main control device are both arranged on the inner wall of the tunnel segment; the water leakage sensors are used to generate electrical signals when water leakage occurs on the inner wall of the tunnel segment; the main control device is connected to the water leakage sensors and external intelligent terminal devices respectively.

[0007] The intelligent monitoring system for water leakage in tunnel segments, wherein the water leakage sensor comprises a water-permeable plate and an elastic sensing component, one side of the water-permeable plate is connected to the tunnel segment, and the other side is connected to the elastic sensing component; the elastic sensing component is used to deform when absorbing water to generate a corresponding electrical signal.

[0008] The intelligent monitoring system for water leakage of tunnel segments, wherein the thickness of the elastic sensing component gradually increases from the center to both ends in its length direction, so that the side of the elastic sensing component away from the permeable plate forms a curved surface with an angle; when the elastic sensing component absorbs water, the angle decreases.

[0009] The intelligent monitoring system for water leakage in tunnel segments, wherein the elastic sensing component includes an elastic water-permeable carrier, an elastic bearing sheet, a graphene conductor element, and a signal cable connected in sequence. A plurality of water-absorbing deformation units are arranged in the elastic water-permeable carrier; the plurality of water-absorbing deformation units are distributed at both ends of the elastic water-permeable carrier in the length direction; on one side of each water-absorbing deformation unit away from the water-permeable plate, it abuts against the elastic water-permeable carrier.

[0010] The intelligent monitoring system for water leakage in tunnel segments, wherein the water-absorbing deformation unit includes a water-permeable soft shell and a plurality of water-absorbing and swelling grains. The plurality of water-absorbing and swelling grains are located inside the water-permeable soft shell; when the plurality of water-absorbing and swelling grains absorb water, the volumes of the plurality of water-absorbing and swelling grains and the water-permeable soft shell both increase.

[0011] The intelligent monitoring system for water leakage in tunnel segments further includes a piezometer. The piezometer is arranged on the outer wall of the tunnel segment and is used to detect the osmotic water pressure borne by the tunnel segment; the piezometer is electrically connected to the main control device.

[0012] The intelligent monitoring system for water leakage in tunnel segments, wherein the piezometer includes a box body, and a baffle, an elastic bladder assembly, and a graphene resistance sensing sheet arranged inside the box body; there is a sealed space between the baffle and the side wall of the box body facing the outside of the tunnel segment; a plurality of pressure inlet holes are arranged on the side wall; the elastic bladder assembly is located on the side of the baffle away from the side wall; both the elastic bladder assembly and the pressure inlet holes communicate with the sealed space; the graphene resistance sensing sheet is arranged on the elastic bladder assembly, and the graphene resistance sensing sheet is used to generate a corresponding electrical signal when the elastic bladder assembly deforms.

[0013] The intelligent monitoring system for water leakage in tunnel segments, wherein the elastic bladder assembly includes a first elastic bladder and at least one second elastic bladder, and the volume of the second elastic bladder is smaller than that of the first elastic bladder.

[0014] The intelligent monitoring system for water leakage in tunnel segments, wherein the graphene resistance sensing sheet includes a bearing sheet, a graphene conductor layer, and a signal transmission line; the graphene conductor layer is arranged inside the bearing sheet; the signal transmission line is electrically connected to the graphene conductor layer and the main control device respectively.

[0015] The intelligent monitoring system for water leakage in tunnel segments, wherein the main control device includes a control circuit board, a data receiving port, and a wireless signal transmission device; the control circuit board is electrically connected to the data receiving port and the wireless signal transmission device respectively; the wireless signal transmission device is connected to an external intelligent terminal device.

[0016] Beneficial effects: By installing the leakage sensor on the inner wall of the tunnel segment, when leakage occurs, the leakage sensor transmits corresponding electrical signals to the external intelligent terminal device through the main control device, and the external intelligent terminal device can then learn that there is a leakage situation inside the tunnel segment. The intelligent leakage monitoring system for tunnel segments of the present invention can accurately and effectively detect whether there is a leakage phenomenon inside the tunnel segments during the construction and operation processes, facilitating the staff to understand the leakage situation in the tunnel at any time and make timely response and treatment, providing a technical basis for tunnel leakage warning and reasonable maintenance. Description of the Drawings

[0017] Figure 1 is the first view of the intelligent leakage monitoring system for tunnel segments described in the present invention;

[0018] Figure 2 is the second view of the intelligent leakage monitoring system for tunnel segments described in the present invention;

[0019] Figure 3 is the third view of the intelligent leakage monitoring system for tunnel segments described in the present invention;

[0020] Figure 4 is the assembly schematic diagram of the leakage sensor and two adjacent tunnel segments in the present invention;

[0021] Figure 5 is the structural schematic diagram of the leakage sensor described in the present invention;

[0022] Figure 6 is the structural schematic diagram of the osmotic pressure gauge described in the present invention;

[0023] Figure 7 is the cross-sectional schematic diagram of the osmotic pressure gauge described in the present invention;

[0024] Figure 8 is the internal structural schematic diagram of the graphene resistance sensing sheet described in the present invention;

[0025] Figure 9 is the functional principle block diagram of the intelligent leakage monitoring system for tunnel segments described in the present invention;

[0026] Figure 10 is the functional principle block diagram of the external intelligent terminal device in the present invention. Detailed Embodiments

[0027] To make the objectives, technical solutions and advantages of the present invention clearer and more definite, the following further elaborates on the present invention with reference to the accompanying drawings and by way of examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] The present invention provides an intelligent monitoring system for water leakage in tunnel segments, as Figures 1-3 shown, which includes a plurality of water leakage sensors 1 and a main control device 2; when the number of the water leakage sensors 1 is more than one, any two adjacent water leakage sensors 1 are arranged at intervals. The water leakage sensors 1 can be flexibly installed at any place where water leakage is likely to occur on the tunnel segment 100, such as the inner wall of the tunnel segment 100 or the joint between the inner walls of two adjacent tunnel segments 100. When the water leakage sensor 1 is located at the joint between two adjacent tunnel segments 100, the water leakage sensor 1 is respectively connected to the inner walls of the two adjacent tunnel segments 100. Specifically, a part of the water leakage sensor 1 is attached to the inner wall of one tunnel segment 100, and the other part is attached to the inner wall of the other tunnel segment 100. Preferably, the areas of the water leakage sensor 1 in contact with the two adjacent tunnel segments 100 are equal.

[0029] The main control device 2 is connected to the tunnel segment 100; the main control device 2 also connects the water leakage sensor 1 to an external intelligent terminal device 200. When water leaks to the inner wall of the tunnel segment 100, the water leakage sensor 1 in contact with the inner wall of the tunnel segment 100 generates a corresponding electrical signal; the electrical signal is collected by the main control device 2 and transmitted to the external intelligent terminal device 200. The external intelligent terminal device 200 can know that water leakage occurs in the tunnel segment 100 according to the electrical signal, so as to display the current water leakage condition of the tunnel segment 100 through the external intelligent terminal device 200.

[0030] The intelligent monitoring system for water leakage in tunnel segments further includes a warning device, and the warning device includes a buzzer and a warning lamp; the buzzer and the warning lamp are both electrically connected to the main control device 2; when the main control device 2 receives the electrical signal, it controls the buzzer to turn on and the warning lamp to flash to prompt the staff that water leakage occurs inside the tunnel, so as to facilitate the staff to handle it in time.

[0031] In the present invention, by installing the water leakage sensor 1 on the inner wall of the tunnel segment 100, when water leakage occurs, the water leakage sensor 1 generates an electrical signal and sends the electrical signal to the main control device 2. The main control device 2 can know that water leakage occurs in the tunnel segment 100, and then transmits the corresponding electrical signal to the external intelligent terminal device 200 through the main control device 2. The external intelligent terminal device 200 can display that water leakage occurs. The intelligent monitoring system for water leakage in tunnel segments of the present invention can accurately and effectively detect whether water leakage occurs inside the tunnel segment 100 during the construction and operation process, facilitate the staff to understand the water leakage situation in the tunnel at any time, and make a timely response and treatment, providing a technical basis for the early warning and reasonable maintenance of tunnel water leakage.

[0032] asFigure 4 and Figure 5 As shown in Figure 5 , the water seepage sensor 1 includes a permeable plate 11 and an elastic sensing component 12. Both ends of the permeable plate 11 in the length direction are respectively connected to the tunnel segment 100 by screws or bolts and are in contact with the inner wall of the tunnel segment 100, so that when water seeps to the inner wall of the tunnel segment 100, the permeable plate 11 can immediately absorb the water. As Figure 4 shown in Figure 4 , when the water seepage sensor 1 is installed at the joint of two adjacent tunnel segments 100, the permeable plate 11 can be respectively in contact with the inner walls of the two adjacent tunnel segments 100, so that when the seepage water flows to the inner wall of the tunnel segment 100 through the gap between the two adjacent tunnel segments 100, the permeable plate 11 can immediately absorb the water and transfer the water to the side away from the tunnel segment 100, thereby improving the detection sensitivity of the water seepage sensor 1. The elastic sensing component 12 is located on the side of the permeable plate 11 away from the tunnel segment 100 and is connected to the permeable plate 11 to absorb the seepage water transmitted by the permeable plate 11.

[0033] The elastic sensing component 12 is electrically connected to the main control device 2. When water seepage occurs, the elastic sensing component 12 absorbs water and deforms, thereby generating a corresponding electrical signal and transmitting the electrical signal to the main control device 2, and then transmitting it to the external intelligent terminal device 200 through the main control device 2 to notify the external staff of the water seepage condition of the tunnel segment.

[0034] The thickness of the elastic sensing component 12 gradually increases from the center to both ends in its length direction, so that a curved surface with an included angle is formed on the side of the elastic sensing component 12 away from the permeable plate 11; when the elastic sensing component 12 absorbs water, the deformation amount at both ends of the elastic sensing component 12 in its length direction is greater than the deformation amount at its center, so that the included angle decreases.

[0035] As Figure 4 and Figure 5 shown in Figure 5 , the elastic sensing component 12 includes an elastic water-permeable carrier 121, an elastic bearing sheet 122, a graphene conductor element 123 and a signal cable 124 connected in sequence. A plurality of water absorption deformation units 13 are arranged in the elastic water-permeable carrier 121; the plurality of water absorption deformation units 13 are distributed at both ends of the elastic water-permeable carrier 121 in the length direction; the signal cable 124 electrically connects the graphene conductor element 123 to the main control device 2.

[0036] When water seepage occurs, the water source sequentially enters the water absorption and deformation unit 13 through the water permeable plate 11 and the elastic water permeable carrier 121. The water absorption and deformation unit 13 expands and deforms, pushing up both ends of the elastic water permeable carrier 121 in the length direction, thereby driving the graphene conductor element 123 to deform through the elastic bearing piece 122 and generating a corresponding electrical signal. The main control device 2 transmits this electrical signal to the external intelligent terminal device 200, and external staff can then learn that water seepage has occurred in the tunnel.

[0037] The thickness of the water permeable plate 11, the elastic bearing piece 122, and the graphene conductor element 123 is uniformly arranged along their respective length directions. The water absorption and deformation unit 13 is not arranged at the center of the elastic water permeable carrier 121 near the included angle, and the water absorption and deformation units 13 are arranged at both ends of the elastic water permeable carrier 121 along its length direction, making the middle of the elastic water permeable carrier 121 thin and both ends thick. When water seepage occurs, only both ends of the elastic water permeable carrier 121 in its length direction produce large deformations, and the center near the included angle hardly deforms, thereby increasing the deformation amount of the elastic water permeable carrier 121 and enhancing the induction sensitivity of the graphene conductor element 123.

[0038] The graphene conductor element 123 of the present invention has excellent properties such as good flexibility, high sensitivity, and being not easily affected by electromagnetic interference.

[0039] Initially, one side of each water absorption and deformation unit 13 away from the water permeable plate 11 abuts against the elastic water permeable carrier 121 to ensure that once the water absorption and deformation unit 13 absorbs water, even if the water absorption and deformation unit 13 only produces a small expansion deformation, it can still push up the elastic water permeable carrier 121, thereby abutting against the graphene conductor element 123 through the elastic bearing piece 122 and causing the graphene conductor element 123 to generate a corresponding electrical signal, greatly improving the detection sensitivity and detection accuracy of the water seepage sensor 1.

[0040] In a specific embodiment of the present invention, the cross-section of the water absorption and deformation unit 13 is a rhombus, and its two obtuse-angled diagonals abut against the elastic water permeable carrier 121 along the thickness direction. The present invention designs the cross-section of the water absorption and deformation unit 13 as a rhombus, so that the water absorption and deformation unit 13 can not only have sufficient stretching elasticity, but also always abut against the elastic water permeable carrier 121, and can achieve the best water absorption and deformation effect with the least number of water absorption and deformation units.

[0041] The water absorption and deformation unit 13 includes a water-permeable soft shell 131 and a plurality of water-absorbing and swelling grains 132. The plurality of water-absorbing and swelling grains 132 are located inside the water-permeable soft shell 131. When the plurality of water-absorbing and swelling grains 132 absorb water, the volumes of both the plurality of water-absorbing and swelling grains 132 and the water-permeable soft shell 131 increase. Specifically, the cross-section of the water-permeable soft shell 131 is diamond-shaped. The water-absorbing and swelling grains 132 are made of a water-absorbing and swelling material. In a specific embodiment, the water-absorbing and swelling grains 132 are water-absorbing resin swelling grains.

[0042] When a water leakage occurs, water enters the water-permeable soft shell 131 through the water-permeable plate 11 and the elastic water-permeable carrier 121, causing the water-absorbing and swelling grains 132 to absorb water and expand in volume inside the water-permeable soft shell 131, resulting in deformation of the water-permeable soft shell 131. The water-permeable soft shell 131 jacks up the elastic water-permeable carrier 121 from both ends in the length direction of the elastic water-permeable carrier 121, reducing the included angle of the elastic water-permeable carrier 121, causing deformation of the graphene conductor element 123 and generating a corresponding electrical signal. The electrical signal is transmitted to the main control device 2 through the signal cable 124 and is finally received by the external intelligent terminal device 200. The external intelligent terminal device 200 obtains the information of water leakage in the tunnel. The main control device 2 continues to monitor the change of the electrical signal through the water leakage sensor 1.

[0043] As Figure 4 and Figure 5 shown, a fixed hinge 3 is further provided on the water leakage sensor 1. The fixed hinge 3 is arranged at the included angle and is respectively connected to the graphene conductor element 123, the elastic bearing piece 122 and the elastic water-permeable carrier 121 to position the graphene conductor element 123, the elastic bearing piece 122 and the elastic water-permeable carrier 121 from the center of the water leakage sensor 1, ensuring that when water leakage occurs, the deformation amounts at both ends in the length direction of the elastic water-permeable carrier 121 are greater than the deformation amount at its center, and the center may not even generate deformation, thereby further improving the sensitivity and accuracy of the water leakage sensor 1 in monitoring water leakage conditions.

[0044] As Figures 1-3As shown, the intelligent monitoring system for water leakage in tunnel segments further includes a piezometer 4. The piezometer 4 is arranged on the outer wall of the tunnel segment 100 and is used to detect the seepage water pressure borne by the tunnel segment 100. The piezometer 4 is electrically connected to the main control device 2 and transmits data to an external intelligent terminal device 200 via the main control device 2, so as to record, monitor and analyze the seepage water pressure borne by the tunnel segment 100 through the external intelligent terminal device 200. When the seepage water pressure value is equal to a preset threshold, the main control device 2 controls the buzzer and the warning light to turn on; wherein, the preset threshold is the critical seepage water pressure value at which water leakage occurs in the tunnel segment 100.

[0045] As Figure 6 and Figure 7 shown, the piezometer 4 includes a box body 41, a baffle 42, an elastic bladder assembly 43 and a graphene resistance sensing sheet 44. The piezometer 4 is an integral embedded part, that is, the box body 41 is integrally formed and has a receiving cavity. Before the tunnel segment 100 is prefabricated and shipped from the factory, a threaded groove is reserved on the tunnel segment 100. A thread 410 is provided outside the box body 41, and the thread 410 is matched with the threaded groove, so that the box body 42 is threadedly connected into the threaded groove.

[0046] The baffle 42, the elastic bladder assembly 43 and the graphene resistance sensing sheet 44 are all arranged inside the box body 41; specifically, the periphery of the baffle 42 is connected to the box body 41, and there is a gap between the baffle 42 and the side wall 411 of the box body 41 facing the outside of the tunnel segment 100 to form a sealed space 45. A plurality of pressure inlet holes 5 are provided on the side wall 411. The plurality of pressure inlet holes 5 are arranged in sequence and at intervals; the pressure inlet holes 5 penetrate through the side wall 411 and are thus communicated with the sealed space 45, so that the seepage water pressure outside the box body 41 can enter the sealed space 45 through the pressure inlet holes 5.

[0047] The elastic bladder assembly 43 is arranged on the baffle 42 and is located on the side of the baffle 42 away from the side wall 411; an opening is provided on the elastic bladder assembly 43, and an opening matching the elastic bladder assembly 43 is provided on the baffle 42, so that the elastic bladder assembly 43 is communicated with the sealed space 45. The graphene resistance sensing sheet 44 is arranged on the elastic bladder assembly 43 and is electrically connected to the main control device 2.

[0048] The external water pressure of the tunnel segment 100 sequentially passes through the pressure inlet hole 5 and the sealed space 45, enters the elastic bladder assembly 43, and causes the elastic bladder assembly 43 to expand and deform; the graphene resistance sensing sheet 44 attached to the elastic bladder assembly 43 generates a strain change, thereby converting the deformation physical quantity of the elastic bladder assembly 43 into a corresponding electrical signal and transmitting the electrical signal to the main control device 2. The main control device 2 transmits the resistance value to the external intelligent terminal device 200, and the external intelligent terminal device 200 analyzes and calculates the osmotic water pressure value according to the resistance value, so as to achieve the purpose of monitoring the osmotic water pressure of the tunnel segment 100 under low load.

[0049] A filter screen 6 is further arranged in the box body 41. The filter screen 6 is located in the sealed space 45 and blocks the plurality of pressure inlet holes 5 to filter sediment and prevent sediment from entering the sealed space 41.

[0050] As Figure 6 and Figure 7 As shown, the elastic bladder assembly 43 includes a first elastic bladder 431 and at least one second elastic bladder 432; the graphene resistance sensing sheets 44 are arranged on both the first elastic bladder 431 and the second elastic bladder 432. Both the first elastic bladder 431 and the second elastic bladder 432 are spherical bladders, and the volume of the second elastic bladder 432 is smaller than the volume of the first elastic bladder 431. The graphene resistance sensing sheet 44 has high sensitivity, and the graphene resistance sensing sheet 44 can grow on the surfaces of the first elastic bladder 431 and the second elastic bladder 432. When the first elastic bladder 431 and the second elastic bladder 432 have a small volume contraction or expansion, the resistance of the graphene resistance sensing sheet 44 changes.

[0051] After a small amount of water enters the sealed space 45 through the pressure inlet hole 5, the small amount of water can enter the second elastic bladder 432, and the second elastic bladder 432 expands and deforms. The graphene resistance sensing sheet arranged on the second elastic bladder 432 generates a strain change, thereby converting the deformation physical quantity of the second elastic bladder 432 into a corresponding electrical signal. The graphene resistance sensing sheet 44 is wound around the surfaces of the first elastic bladder 431 and the second elastic bladder 432.

[0052] There are two second elastic bladders 432, and they are symmetrically distributed on both sides of the first elastic bladder 431, as Figure 6 and Figure 7As shown in the figure. After a large amount of water enters the closed space 45 through the inlet pressure hole 5, the large amount of water can enter the first elastic bladder 431 and / or the two second elastic bladders 432. The first elastic bladder 431 and / or the second elastic bladders 432 expand and deform, and the graphene resistance sensing sheet disposed on the first elastic bladder 431 and / or the second elastic bladders 432 generates a strain change, thereby generating a corresponding electrical signal.

[0053] As Figure 8 shown, the graphene resistance sensing sheet 44 includes a carrier sheet 441, a graphene conductor layer 442, and a signal transmission line 443; the graphene conductor layer 442 is disposed within the carrier sheet 441; the signal transmission lines 443 are respectively electrically connected to the graphene conductor layer 442 and the main control device 2. A lead hole is provided on the box body 42, and the signal transmission line 443 passes through the lead hole and is electrically connected to the main control device 2. In a specific embodiment of the present invention, the carrier sheet 441 is a polydimethylsiloxane carrier sheet (PDMS carrier sheet).

[0054] In an embodiment of the present invention, the graphene conductor layer 442 is a three-dimensional upright graphene conductor layer; by using the graphene conductor layer 442, the graphene resistance sensing sheet 432 has excellent properties such as good flexibility, high sensitivity, and being not easily affected by electromagnetic interference.

[0055] During the pouring stage of the tunnel segment 100, the installation position of the piezometer 4 is reserved by modifying the steel form of the tunnel segment 100, so as to achieve the precise embedding of the piezometer 4, and the outer surface of the box body 41 is flush with the outer surface of the tunnel segment 100, so as to avoid the problem of water leakage from the installation gap between the piezometer 4 and the tunnel segment 100 when installing the piezometer 4 on the finished tunnel segment 100 later. This high-precision pre-embedding method can well control the final installation attitude of the piezometer 4 and achieve the expected design effect.

[0056] As Figure 9 shown, the main control device 2 includes a control circuit board 21, a data receiving port 22, and a wireless signal transmission device 23; the control circuit board 21 is respectively electrically connected to the data receiving port 22 and the wireless signal transmission device 23; the wireless signal transmission device 23 is connected to an external intelligent terminal device 200, thereby realizing wireless data transmission between the main control device 2 and the external intelligent terminal device 200.

[0057] The piezometer 4, the water leakage sensor 1, and the main control device 2 can be installed on the same tunnel segment 100 or distributed on different tunnel segments 100. In one embodiment, as Figure 1As shown, the leakage water sensor 1 and the main control device 2 are installed on the same tunnel segment 100, and the leakage water sensor 1 is located at the place where the tunnel segment 100 is prone to water leakage; the osmotic pressure gauge 4 is installed on another tunnel segment 100. Another embodiment, as Figure 2 shown, the leakage water sensor 1 is located at the joint of two adjacent tunnel segments 100 and is respectively connected to the inner walls of the two adjacent tunnel segments 100; the osmotic pressure gauge 4 (since the osmotic pressure gauge 4 needs to be installed on the outer wall of the tunnel segment 100, the osmotic pressure gauge 4 is not shown in this figure) and the main control device 2 are assembled with any one of the two adjacent tunnel segments 100. Another embodiment, as Figure 3 shown, the leakage water sensor 1, the osmotic pressure gauge 4 and the main control device 2 are respectively assembled with different tunnel segments 100, and the leakage water sensor 1 is located on the tunnel segment 100 prone to water leakage.

[0058] The main control device 2 can be set on the inner surface of any tunnel segment in the tunnel pipeline, or can be embedded in the tunnel segment 100 by modifying the segment steel form during the pouring stage of the tunnel segment 100 according to the manufacturing and assembling method of the tunnel segment 100 and the installation and operation method of the tunnel shield section detection equipment; and as Figure 3 shown, the signal cable 124 and the signal transmission line 443 are arranged along the steel bars 300 inside the tunnel segment 100 to be aggregated at the main control device 2; this wiring method will not have an adverse impact on the structure and performance of the tunnel segment 100.

[0059] The external intelligent terminal device 200 can be a terminal device such as a computer or a mobile phone; as Figure 10 shown, the external intelligent terminal device 200 includes at least one processor 201, a display screen 202, and a memory 203, and may further include a communication interface 204 and a bus 205. Among them, the processor 201, the display screen 202, the memory 203 and the communication interface 204 can complete mutual communication through the bus 205. The display screen 202 is set to display a user guidance interface preset in the initial setting mode. The communication interface 204 can transmit information. The processor 201 can call the logical instructions in the memory 203 to execute the acquisition and analysis calculation of the electrical signals and data output by the leakage water sensor and the osmotic pressure gauge.

[0060] In addition, when the logical instructions in the above-mentioned memory 203 are implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium.

[0061] The memory 203, as a computer-readable storage medium, can be configured to store software programs and computer-executable programs, such as the program instructions or modules corresponding to the methods in the embodiments of the present disclosure. The processor 201 executes functional applications and data processing by running the software programs, instructions or modules stored in the memory 203, that is, realizes the acquisition and analysis calculation of the electrical signals and data output by the seepage water sensor and the piezometer.

[0062] In summary, the present invention provides an intelligent monitoring system for seepage water in tunnel segments. The present invention installs the piezometer, the seepage water sensor and the main control device on the tunnel segment, and uploads the data detected by the piezometer and the seepage water sensor to an external intelligent terminal device through the main control device. After the external intelligent terminal device acquires and analyzes the electrical signals and data output by the seepage water sensor and the piezometer, the osmotic water pressure borne by the tunnel segment and whether seepage water occurs are obtained. Comprehensive intelligent monitoring can more completely and effectively reflect the seepage water state of the shield tunnel during construction and operation, providing a technical basis for tunnel seepage water early warning and reasonable maintenance.

[0063] It should be understood that the application of the present invention is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. An intelligent monitoring system for tunnel segment water leakage, It is characterized in that It includes a plurality of water leakage sensors and a main control device; the water leakage sensor and the main control device are both arranged on the inner wall of the tunnel segment; the water leakage sensor is used to generate an electrical signal when water leakage occurs on the inner wall of the tunnel segment; the main control device is connected to the water leakage sensor and an external intelligent terminal device respectively; the water leakage sensor includes a water-permeable plate and an elastic sensing component, one side of the water-permeable plate is connected to the tunnel segment, and the other side is connected to the elastic sensing component; the elastic sensing component is used to deform when absorbing water to generate a corresponding electrical signal; the elastic sensing component includes an elastic water-permeable carrier, an elastic bearing sheet, a graphene conductor element and a signal cable connected in sequence, and a plurality of water absorption deformation units are arranged in the elastic water-permeable carrier; A plurality of water-absorbing deformation units are distributed at both ends of the elastic water-permeable carrier in the length direction; and a side of each water-absorbing deformation unit away from the water-permeable plate supports the elastic water-permeable carrier.

2. According to the intelligent monitoring system for tunnel segment water leakage of claim 1, It is characterized in that The thickness of the elastic sensing component gradually increases from the center to both ends in the length direction, so that the side of the elastic sensing component away from the water-permeable plate forms a curved surface with an angle; when the elastic sensing component absorbs water, the angle decreases.

3. According to the intelligent monitoring system for tunnel segment water leakage as claimed in claim 2, It is characterized in that The water absorption deformation unit includes a water permeable soft shell and a plurality of water absorption expansion grains, wherein the plurality of water absorption expansion grains are located in the water permeable soft shell; when the plurality of water absorption expansion grains absorb water, the volumes of the plurality of water absorption expansion grains and the water permeable soft shell both increase.

4. According to the intelligent monitoring system for tunnel segment water leakage of claim 1, It is characterized in that It also includes an osmometer, which is arranged on the outer wall of the tunnel segment and is used to detect the seepage water pressure borne by the tunnel segment; the osmometer is electrically connected to the main control device.

5. According to the intelligent monitoring system for tunnel segment water leakage according to claim 4, It is characterized in that The piezometer includes a box body, and a baffle, an elastic bag assembly and a graphene resistance sensing sheet arranged in the box body; a closed space is provided between the baffle and the side wall of the box body facing the outside of the tunnel segment; a plurality of pressure inlet holes are provided on the side wall; the elastic bag assembly is located on the side of the baffle away from the side wall; the elastic bag assembly and the pressure inlet holes are both connected to the closed space; the graphene resistance sensing sheet is arranged on the elastic bag assembly, and the graphene resistance sensing sheet is used to generate a corresponding electrical signal when the elastic bag assembly is deformed.

6. According to the intelligent monitoring system for tunnel segment water leakage according to claim 5, It is characterized in that The elastic bag assembly includes a first elastic bag and at least one second elastic bag, wherein the volume of the second elastic bag is smaller than that of the first elastic bag.

7. According to claim 5, the intelligent monitoring system for tunnel segment water leakage, It is characterized in that The graphene resistance sensing sheet includes a carrier sheet, a graphene conductor layer, and a signal transmission line; the graphene conductor layer is disposed within the carrier sheet; the signal transmission line is electrically connected to both the graphene conductor layer and the main control device.

8. The intelligent monitoring system for leakage of tunnel segments according to claim 1, characterized in that the main control device includes a control circuit board, a data receiving port, and a wireless signal transmission device; the control circuit board is electrically connected to both the data receiving port and the wireless signal transmission device; the wireless signal transmission device is connected to an external intelligent terminal device.

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