Monitoring instrument wiring structure of sleeve lining reinforced water conveyance tunnel
By using an arched protective pipe, an external extension pipe, and a straight protective pipe wiring structure in the water conveyance tunnel, the problem of the monitoring instrument shielding wire being torn apart by the hardening shrinkage of concrete during the secondary lining process was solved, thereby improving the stability and safety of the monitoring instrument and simplifying the operation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GANSU PROVINCE JINGTAICHUAN ELECTRIC POWER IRRIGATION MANAGEMENT BUREAU (GANSU PROVINCE JINGTAICHUAN ELECTRIC POWER IRRIGATION PROJECT HEADQUARTERS)
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-12
AI Technical Summary
During the secondary lining process of water conveyance tunnels, the shielding wires of monitoring instruments are easily broken by the shrinkage of hardened concrete, resulting in a high risk of instrument damage. Existing wiring methods are complex and unsafe to operate.
The shielding wires of the monitoring instruments are collected and run through a single protective pipe using arched protective pipes, external extension pipes, and straight protective pipes. This prevents the shielding wires from contacting the subsequently poured concrete. Through the design of the protective pipes, the shielding wires of all the monitoring instruments are gathered at the top and run through a single protective pipe. This design protects the shielding wires of all the monitoring instruments and prevents them from contacting the subsequently poured concrete, reducing the risk of instrument damage, improving the safety and durability of the pouring process, and eliminating the need to tie the shielding wires to the reinforcing steel mesh.
The design of the protective tube reduces the risk of damage to the monitoring instrument, improves the safety and durability of the pouring process, simplifies the operation process, avoids direct contact between the shielding wire and the concrete, and enhances the stability and reliability of the monitoring instrument.
Smart Images
Figure CN224233291U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water conveyance tunnel monitoring technology, and in particular to a wiring structure for a monitoring instrument for a reinforced water conveyance tunnel. Background Technology
[0002] With the development of my country's water conservancy and hydropower industry, the number and scale of hydraulic tunnels are constantly expanding. As water conveyance tunnels operate under high loads for extended periods, structural deterioration and defects are inevitable, leading to decreased service performance and difficulty in meeting operational requirements. Lining reinforcement is an important method for strengthening water conveyance tunnels; however, the mechanical properties of newly poured reinforced concrete and existing deteriorated concrete differ significantly. Ensuring the coordinated stress distribution of the two materials is crucial for the project's success. Therefore, monitoring instruments need to be deployed during construction to promptly obtain information on the contact status between the old and new concrete structures. Currently, in lining reinforcement projects for water conveyance tunnels, the installation of monitoring instruments follows the installation method used in traffic tunnel engineering. The monitoring instruments are fixed to the reinforcing mesh of the secondary lining by binding or welding. The instrument's shielding wire is tied to the secondary lining's reinforcing mesh with wire, and the shielding wire joint is pre-installed in a location convenient for monitoring. Finally, the instrument and shielding wire are cast together into the concrete.
[0003] The water conveyance tunnel has a narrow cross-sectional space, and the above-mentioned wiring method is complicated to operate. During the pouring of the secondary lining, there is a risk that the concrete hardening and shrinkage will break the shielding wire, and the risk of instrument damage is relatively high. Utility Model Content
[0004] This utility model proposes a wiring structure for monitoring instruments in reinforced water conveyance tunnels, which solves the problem in the prior art where concrete hardening and shrinkage during the pouring of secondary lining can break the shielding wire.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] A wiring structure for monitoring instruments in a reinforced water conveyance tunnel includes an existing lining, monitoring instruments, and an arched protective pipe. Multiple monitoring instruments are arranged at equal intervals along the arch and installed on the inner surface of the existing lining.
[0007] All the shielding wires of the monitoring instruments are threaded into the arched protective pipe. All the shielding wires converge at an outlet on the arched protective pipe and extend outward to the signal acquisition point outside the tunnel. The arched protective pipe is installed on the inner surface of the existing lining.
[0008] Furthermore, it also includes an external extension pipe, which is installed on the inner surface of the existing lining. All shielding wires converge at an outlet position on the arched protective pipe and pass through the external extension pipe, connecting to the signal acquisition point outside the tunnel. The end of the external extension pipe away from the arched protective pipe extends to the outside of the tunnel.
[0009] Furthermore, it also includes a straight protective pipe, which is connected to the bottom opening of the arched protective pipe. The straight protective pipe is installed on the inner surface base plate of the existing lining. A monitoring instrument is installed on the inner surface base plate of the existing lining. The shielding wire of the monitoring instrument passes through the straight protective pipe and further through the arched protective pipe.
[0010] Furthermore, the monitoring instrument is fixed to the inner surface of the existing lining by bolts.
[0011] Furthermore, the arched protective pipe, the outer extension pipe, and the straight protective pipe are all installed on the inner surface of the existing lining using fixing buckles.
[0012] Furthermore, it also includes a lining concrete, which is poured inside the existing lining, and the monitoring instrument is located between the contact surface between the existing lining and the lining concrete.
[0013] The positive effects of this utility model are as follows: through the design of the protective tube, the shielding wires of all monitoring instruments are protected and gathered at the top, and then pass out from the same protective tube, which avoids the shielding wires from contacting the subsequently poured concrete, reduces the risk of instrument damage, improves the safety and durability of the pouring, and eliminates the need to tie the shielding wires to the steel mesh. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the wiring structure of the monitoring instrument in the reinforced water conveyance tunnel after the concrete lining has been poured.
[0015] Figure 2 This is a first schematic diagram of the wiring structure of the monitoring instrument for the reinforced water conveyance tunnel according to the present invention;
[0016] Figure 3 This is a schematic diagram of the second structure of the wiring structure for the monitoring instrument in the reinforced water conveyance tunnel of this utility model.
[0017] Figure 4 This is a schematic diagram of the three-way pipe head structure in this utility model;
[0018] Figure 5 This is a schematic diagram of the four-way pipe head structure in this utility model;
[0019] Figure 6 This is a schematic diagram of the fixing buckle structure in this utility model;
[0020] In the picture:
[0021] 1. Existing lining; 2. Concrete lining; 3. Arched protective pipe; 4. Monitoring instruments; 5. External extension pipe; 6. Shielded wire; 7. T-joint; 8. Four-way joint; 9. Fixing buckle; 10. Straight protective pipe. Detailed Implementation
[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.
[0023] To address the aforementioned issues, this embodiment provides a wiring structure for monitoring instruments in a reinforced water conveyance tunnel. The installation of the monitoring instruments and the protection of the shielding wires are completed before the secondary lining steel mesh is tied, which maximizes the use of the internal space of the water conveyance tunnel.
[0024] Example 1
[0025] Combination Figure 1-6 As shown, a monitoring instrument wiring structure for a reinforced water conveyance tunnel includes an existing lining 1, a monitoring instrument 4, and an arched protective pipe 3. The arch of the arched protective pipe 3 is adapted to the shape of the inner wall of the tunnel.
[0026] Multiple monitoring instruments 4 are provided, and the multiple monitoring instruments 4 are arranged at equal intervals along an arch and installed on the inner surface of the existing lining 1.
[0027] All the shielding wires 6 of the monitoring instruments 4 are inserted into the arched protective pipe 3. All the shielding wires 6 converge at an outlet position on the arched protective pipe 3 and extend outward to the signal acquisition point outside the tunnel. The arched protective pipe 3 is installed on the inner surface of the existing lining 1.
[0028] An outlet is provided in the middle of the top of the arched protective pipe 3, from which the shielded wires 6 of all the monitoring instruments 4 can converge and pass out.
[0029] To reinforce the existing lining 1, a layer of inner lining concrete 2 needs to be added to the inside of the existing lining 1. The inner lining concrete 2 is poured inside the existing lining 1, and the monitoring instrument 4 is located between the contact surface of the existing lining 1 and the inner lining concrete 2.
[0030] In this embodiment, before reinforcement, all monitoring instruments 4 need to be installed on the inner surface and bottom surface of the existing lining 1 to form an arched array of monitoring instruments 4.
[0031] After the array of monitoring instruments 4 is installed, a wire threader is used to thread the shielded wire 6 of each monitoring instrument 4 into the arched protective tube 3.
[0032] In practice, the monitoring instrument can be installed on the bottom plate of the monitoring section, i.e. the inner bottom surface of the tunnel. After the monitoring instrument is installed, the shielding wire 6 is threaded into the arched protective pipe 3 using a wire threader.
[0033] After the base plate is completed, the monitoring instruments 4 for measuring points such as the arch waist, arch shoulder, and arch crown are installed and wired from bottom to top.
[0034] At the installation location of monitoring instrument 4, a three-way pipe head 7 is used to collect the shielded wire 6, and at the arch, a four-way pipe head 8 is used to gather all the shielded wires 6 together.
[0035] Example 2
[0036] Combination Figure 1-6 As shown, based on Example 1:
[0037] It also includes an outer extension pipe 5, which is installed on the inner surface of the existing lining 1. All shielding wires 6 converge at an outlet position on the arched protective pipe 3 and pass through the outer extension pipe 5. The outer extension pipe 5 is connected to the signal acquisition point outside the tunnel. The end of the outer extension pipe 5 away from the arched protective pipe 3 extends to the outside of the tunnel.
[0038] The arched protective pipe 3 is connected to the external extension pipe 5 through the four-way pipe head 8.
[0039] In actual use, the shielded wires 6 of all monitoring instruments 4 enter the outer extension pipe 5 from the outlet in the middle of the top of the arched protective pipe 3, and then connect to the signal acquisition point outside the tunnel from the outer extension pipe 5.
[0040] It also includes a straight protective tube 10, which is connected to the bottom opening of the arched protective tube 3. The straight protective tube 10 is installed on the inner surface base plate of the existing lining 1. A monitoring instrument 4 is installed on the inner surface base plate of the existing lining 1. The shielding wire 6 of the monitoring instrument 4 passes through the straight protective tube 10 and further through the arched protective tube 3. The straight protective tube 10 on the base plate can adapt to the bottom plane of the existing lining 1.
[0041] Before reinforcement, all monitoring instruments 4 need to be installed on the inner surface and bottom surface of the existing lining 1 to form an arched array of monitoring instruments 4. Then, the arched protective pipe 3, the outer extension pipe 5, and the straight protective pipe 10 are fixed, and the shielding wire 6 is inserted into the arched protective pipe 3, the outer extension pipe 5, and the straight protective pipe 10. All shielding wires 6 are then inserted outward from the outer extension pipe 5. Further steel mesh is then installed, and finally, the concrete lining 2 is poured to complete the reinforcement.
[0042] By designing a protective tube, the shielding wires 6 of all monitoring instruments 4 are protected and gathered at the top, exiting from the same protective tube. This prevents the shielding wires 6 from coming into contact with the subsequently poured concrete, reducing the risk of instrument damage, improving the safety and durability of the pouring process, and eliminating the need to tie the shielding wires to the reinforcing mesh.
[0043] Example 3
[0044] Combination Figure 1-6 As shown, the difference between this embodiment and Embodiment 2 is that:
[0045] The monitoring instrument 4 is fixed to the inner surface of the existing lining 1 by bolts.
[0046] The arched protective pipe 3, the outer extension pipe 5, and the straight protective pipe 10 are all installed on the inner surface of the existing lining 1 by fixing buckles 9; the monitoring instrument 4 is stably and permanently fixed by bolts.
[0047] The arched protective pipe 3, the external extension pipe 5, and the straight protective pipe 10 are installed and fixed by the fixing buckle 9, which ensures the stability of the pipeline.
[0048] The above-described embodiments are detailed and specific, illustrating preferred embodiments of the present utility model. They are only used to illustrate the technical ideas and features of the present utility model, with the aim of enabling those skilled in the art to understand the content of the present utility model and implement it accordingly. However, they are not limited to the present utility model, and the patent scope of the present utility model cannot be limited by this embodiment alone. That is, any equivalent changes or modifications made to the spirit disclosed in the present utility model, without departing from the structure of the present utility model, such as local improvements within the system and modifications or transformations between subsystems, are still within the patent scope of the present utility model.
Claims
1. A wiring structure for monitoring instruments in a reinforced water conveyance tunnel, comprising an existing lining (1), characterized in that, It also includes monitoring instruments (4) and arched protective pipes (3). Multiple monitoring instruments (4) are provided and are installed on the inner surface of the existing lining (1) at equal intervals along the arch. The shielding wires (6) of all the monitoring instruments (4) are inserted into the arched protective pipe (3). All the shielding wires (6) converge at an outlet position on the arched protective pipe (3) and extend outward to the signal acquisition point outside the tunnel. The arched protective pipe (3) is installed on the inner surface of the existing lining (1).
2. The monitoring instrument wiring structure for a reinforced water conveyance tunnel according to claim 1, characterized in that, It also includes an outer extension pipe (5), which is installed on the inner surface of the existing lining (1). All shielding wires (6) converge at an outlet position on the arched protective pipe (3) and pass through the outer extension pipe (5). The outer extension pipe (5) is connected to the signal acquisition point outside the tunnel. The end of the outer extension pipe (5) away from the arched protective pipe (3) extends to the outside of the tunnel.
3. The monitoring instrument wiring structure for a reinforced water conveyance tunnel according to claim 2, characterized in that, It also includes a straight protective tube (10), which is connected to the bottom opening of the arched protective tube (3). The straight protective tube (10) is installed on the inner surface bottom plate of the existing lining (1). A monitoring instrument (4) is installed on the inner surface bottom plate of the existing lining (1). The shielding wire (6) of the monitoring instrument (4) is inserted into the straight protective tube (10) and further inserted into the arched protective tube (3).
4. The monitoring instrument wiring structure for a reinforced water conveyance tunnel according to claim 1, characterized in that, The monitoring instrument (4) is fixed to the inner surface of the existing lining (1) by bolts.
5. The monitoring instrument wiring structure for a reinforced water conveyance tunnel according to claim 3, characterized in that, The arched protective pipe (3), the outer extension pipe (5), and the straight protective pipe (10) are all installed on the inner surface of the existing lining (1) by means of fixing buckles (9).
6. The monitoring instrument wiring structure for a reinforced water conveyance tunnel according to claim 1, characterized in that, It also includes a lining concrete (2), which is poured inside the existing lining (1), and the monitoring instrument (4) is located between the contact surface of the existing lining (1) and the lining concrete (2).