Device for testing drainage performance of tunnel drainage plate

Abstract

The utility model belongs to the technical field of tunnel waterproof construction, and particularly relates to a drainage performance testing device for a tunnel drainage plate. The testing device comprises a tunnel simulation body composed of a barrel, a primary supporting structure, a drainage plate and a secondary lining structure, the primary supporting structure, the drainage plate and the secondary lining structure are sequentially arranged on the inner wall of the barrel, the drainage plate is annularly arranged, the drainage face faces the primary supporting structure, sealant is arranged on the two sides of the drainage plate respectively, and the sealant is combined with the primary supporting structure and the secondary lining structure respectively, so that a water passing space is formed in the drainage face of the drainage plate. The water passing space is communicated with a water injection pipe and a water drainage pipe, the water injection pipe and the water drainage pipe are provided with flowmeters respectively, a pressure sensor is arranged in the water passing space, and the flowmeters and the pressure sensor are electrically connected with a controller respectively; the test device performs experimental detection on the drainage performance of the drainage plate by simulating the tunnel environment, and has the characteristics of short experimental period and high test accuracy.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel waterproof construction, and specifically relates to a drainage performance testing device for a tunnel drainage board. Background Art

[0002] The design of drainage and water drainage for railway tunnels in my country follows the principle of "combining prevention, drainage, interception and blocking, adapting to local conditions and comprehensive management". Generally, mountain tunnels are designed as drainage tunnels, and the principle of "primarily drainage" or "primarily blocking, with limited discharge" is adopted according to the geological and hydrological environment of the tunnel surrounding rock. Usually, drainage boards are installed between the initial support and the secondary lining of the water-rich section to enhance drainage. Since the drainage board is a point-shaped convex shell special-shaped structure, its drainage capacity is currently only theoretically calculated, but there is no relevant research data on its actual drainage effect in tunnel engineering. Utility Model Content

[0003] The utility model aims to provide a testing device for testing the drainage performance of a drainage plate in a simulated tunnel environment, which has the characteristics of short experimental period and high test accuracy.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A tunnel drain plate drainage performance testing device, characterized in that it includes a tunnel simulation body composed of a cylinder, a primary support structure, a drain plate and a secondary lining structure sequentially arranged on the inner wall of the cylinder, the drain plate is arranged circumferentially with the drainage surface facing the primary support structure, sealants are respectively arranged on both sides of the drain plate, the sealants are respectively combined with the primary support structure and the secondary lining structure, so that the drainage surface of the drain plate forms a water-passing space, the water-passing space is respectively connected to a water injection pipe and a drainage pipe, the water injection pipe and the drainage pipe are respectively provided with flow meters, a pressure sensor is arranged in the water-passing space, and the flow meter and the pressure sensor are respectively electrically connected to a controller.

[0006] Additional technical features of the above-mentioned tunnel drainage board drainage performance test device include:

[0007] ——The water injection pipe and the drainage pipe are sealed and penetrate the cylinder, the primary support structure and are connected to the water flow space; or the water injection pipe and the drainage pipe are sealed and penetrate the secondary lining structure, the drainage board and are connected to the water flow space;

[0008] ——The water injection pipe or drainage pipe adopts two sets of pipes, which are respectively placed on both sides of the drainage board;

[0009] ——The water injection pipe corresponds vertically to the drainage pipe, the water injection pipe is located at the lower part of the cylinder, and the drainage pipe is located at the upper part of the cylinder;

[0010] ——The controller includes a PLC and / or Ethernet / serial communication conversion module, which is used to transmit the collected water pressure and water flow data to a host computer through a switch or a conversion line. The host computer includes a data analysis and storage module.

[0011] Compared with the prior art, the tunnel drainage board drainage performance testing device provided by the utility model has the following advantages: the testing device is composed of a cylinder, a primary support structure, a drainage board and a secondary lining structure which are sequentially placed on the inner wall of the cylinder to form a tunnel simulation body, a water-passing space is formed on both sides of the annular drainage board by sealant, the water-passing space is respectively connected to the water injection pipe and the drainage pipe to realize pressurized water injection and drainage experiments, the structure is simple and compact, and is convenient for simulating drainage performance testing at the tunnel construction site; secondly, flow meters are respectively arranged on the water injection pipe and the drainage pipe, a pressure sensor is arranged in the water-passing space, the flow meter and the pressure sensor are respectively electrically connected to the controller, the flow rate is automatically adjusted, the water pressure of the drainage board, the instantaneous flow rate of water injection and drainage, the time period flow rate and other data are detected in real time, and the data are collected and analyzed by the controller, so that the drainage performance index of the tunnel drainage board can be quickly known, the experimental period is shortened, the detection efficiency is improved, the information is automatically collected, the experimental data is more accurate, and it has the advantages of convenient operation, economy and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a structural schematic diagram of a tunnel drainage performance testing device. DETAILED DESCRIPTION

[0013] The structure and working principle of the tunnel drainage performance test device provided by the utility model are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] In the description of the present invention, unless otherwise specified, the terms "circumferential", "vertical", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0015] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set / provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0016] like Figure 1 As shown, the structure of the tunnel drainage performance test device includes a cylinder 1, a primary support structure 2, a drainage board 3 and a secondary lining structure 4 sequentially arranged on the inner wall of the cylinder 1 to form a tunnel simulation body, the drainage board 3 is arranged in a circumferential direction and the drainage surface faces the primary support structure 2, and sealants 5 are respectively arranged on both sides of the drainage board 3. The sealants 5 are respectively combined with the primary support structure 2 and the secondary lining structure 4, so that the drainage surface of the drainage board 3 forms a water-passing space 6, and the water-passing space 6 is respectively connected to the water injection pipe 71 and the drainage pipe 72. The water injection pipe 71 and the drainage pipe 72 are respectively provided with flow meters (711, 721), and a pressure sensor 8 is arranged in the water-passing space 6. The flow meter (711, 721) and the pressure sensor 8 are respectively electrically connected to the controller 9.

[0017] The working principle is as follows: the inner wall of the cylinder 1 of the device is provided with a primary support structure 2, a drainage board 3 is laid in an annular direction, and a secondary lining structure 4 is added. Since sealants 5 are provided on both sides of the drainage board 3, a closed water-passing space 6 is formed on the drainage surface of the drainage board 3. The water-passing space 6 is connected to the water injection pipe 71 and the drainage pipe 72 respectively. A pressure sensor 8 is provided in the water-passing space 6. The water injection pipe 71 and the drainage pipe 72 are provided with flow meters (711, 721) and switch valves (712, 722) respectively, which are all uniformly adjusted by the controller 9 after being electrically connected, so as to realize the experimental purpose of pressurized water injection and drainage detection. During the detection process, after the water pressure reaches the predetermined value of the experiment, the instantaneous or time period water intake and drainage volume are transmitted to the controller 9 in real time for calculation and analysis, so that the drainage performance data obtained are highly accurate and the analysis data are more comprehensive.

[0018] It should be noted that the primary support structure 2 and the secondary lining structure 4 are both formed by concrete spraying. In order to be close to the tunnel environment, the primary support structure 2 uses C20 concrete and the secondary lining structure 4 uses C35 concrete; the drainage surface of the drainage board 3 is distributed with dot-shaped protrusions; the controller 9 is electrically connected to the flow meter (711, 721) and the pressure sensor 8, which includes necessary power lines, communication lines, solenoid valve groups and other components.

[0019] In the structure constituting the above-mentioned tunnel drainage board 3 drainage performance testing device,

[0020] In one embodiment, the water injection pipe 71 and the drainage pipe 72 are placed outside the cylinder 1, and the two seals penetrate the cylinder 1, the primary support structure 2 is connected with the water-passing space 6, and the communication seal interface is on the upper drainage surface of the drainage board 3; of course, the water injection pipe 71 and the drainage pipe 72 can also be placed inside the cylinder 1, and the two seals penetrate the secondary lining structure 4, the drainage board 3 is connected with the water-passing space 6, and the communication seal port penetrates the lower part of the drainage board 3 until the drainage surface;

[0021] ——Preferably, the water injection pipe 71 or the drainage pipe 72 adopts two sets of pipelines, which are respectively placed on both sides of the drainage board 3 in the circumferential direction, that is, when pressurized water is injected, the two pipelines are respectively injected with water from both sides of the drainage board 3 at the same time, and the drainage pipe 72 is simultaneously drained from both sides of the drainage board 3, so that the water injection and drainage processes are more balanced. This structure is closer to the current tunnel drainage form, and the drainage performance index obtained is closer to the actual application environment, and the reference value is higher;

[0022] ——Furthermore, the water injection pipe 71 and the drainage pipe 72 correspond vertically, the water injection pipe 71 is located at the lower part of the cylinder 1, and the drainage pipe 72 is located at the upper part of the cylinder 1. By injecting water from bottom to top, the gas remaining on the drainage surface of the drainage board 3 can be completely emptied, so that the water pressure data in the water space 6 and the drainage flow data of the drainage pipe 72 are more accurate;

[0023] ——Preferably, the controller 9 includes a PLC and / or Ethernet / serial communication conversion module, which is used to transmit the collected water pressure and water flow data to the host computer 10 through a switch or a conversion line. The host computer 10 includes a data analysis and storage module. In this embodiment, the interface is an RS232 interface or an RS232-usb method. The real-time experimental data obtained is transmitted to the computer through three different connection methods such as wired, Bluetooth or WIFI. The data analysis and storage module of the host computer 10, that is, the data processing software in the computer, analyzes and processes the test data to achieve different experimental purposes, such as drawing time-flow, time-pressure, pressure-flow and other change curves, so that the drainage performance data obtained is accurate, the relevant test results are intuitive, and the experimental items are comprehensive.

[0024] The above-described implementation modes are only used to illustrate the technical solution of the utility model, and are not limiting conditions for the implementation of the utility model. Therefore, any other modifications or equivalent replacements of configuration dimensions and internal structures made to the technical solution of the utility model, as long as they do not depart from the spirit and scope of the technical solution of the utility model, should be included in the scope of the claims of the utility model.

Claims

1. A tunnel drainage board drainage performance testing device, characterized in that: The tunnel simulation body is composed of a cylinder, a primary support structure, a drainage board and a secondary lining structure which are sequentially arranged on the inner wall of the cylinder, the drainage board is arranged in a circumferential direction with the drainage surface facing the primary support structure, sealants are respectively arranged on both sides of the drainage board, the sealants are respectively combined with the primary support structure and the secondary lining structure, so that the drainage surface of the drainage board forms a water-passing space, the water-passing space is respectively connected to a water injection pipe and a drainage pipe, the water injection pipe and the drainage pipe are respectively provided with flow meters, a pressure sensor is arranged in the water-passing space, and the flow meter and the pressure sensor are respectively electrically connected to a controller.

2. A tunnel drainage board drainage performance testing device according to claim 1, characterized in that: The water injection pipe and the drainage pipe seal penetrate the cylinder, the primary branch structure and are connected to the water passage space; or the water injection pipe and the drainage pipe seal penetrate the secondary lining structure, the drainage board and are connected to the water passage space.

3. A tunnel drainage board drainage performance testing device according to claim 1, characterized in that: The water injection pipe or the drainage pipe adopts two sets of pipelines, which are respectively placed on both sides of the drainage plate in the circumferential direction.

4. A tunnel drainage board drainage performance testing device according to claim 1 or 3, characterized in that: The water injection pipe corresponds vertically to the drainage pipe, the water injection pipe is located at the lower part of the cylinder, and the drainage pipe is located at the upper part of the cylinder.

5. A tunnel drainage board drainage performance testing device according to claim 1, characterized in that: The controller includes a PLC and / or an Ethernet / serial communication conversion module, which is used to transmit the collected water pressure and water flow data to a host computer through a switch or a conversion line. The host computer includes a data analysis and storage module.

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