Auxiliary device for testing ion concentration of drainage water of tunnel blind pipe

Abstract

The utility model discloses an auxiliary device for testing ion concentration of drainage water of a tunnel blind pipe, which comprises a replaceable filter screen rod (2) connected with the tunnel blind pipe (1), one end of the replaceable filter screen rod (2) is connected with a flow cell (4) through a water pipe (3), a water inlet (41) is arranged at the bottom of one side of the flow cell (4), and a water outlet (42) is arranged at the top of the other side of the flow cell (4). A group of probe hole sites (43) are also arranged in the tank body of the flow cell (4), a sensor probe (44) is embedded in each probe hole site (43), and the sensor probes (44) are connected with an external water quality analyzer (46) through data lines (45). The device has the advantages that the efficiency and the accuracy of detection data are improved, the dynamic change of ion components and ion concentration in seepage water of the tunnel drainage blind pipe is mastered in real time, and the influence of water pipe blockage and blind pipe characteristics on the detection data is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel drainage detection, in particular to an auxiliary device for testing the ion concentration of tunnel blind pipe drainage. Background Technique

[0002] With the rapid development of infrastructure construction, China has achieved great achievements in tunnel engineering construction, and at the same time, it has also brought problems of disease treatment in the process of tunnel operation and maintenance. Due to the different construction times, design standards, construction techniques and strata penetrated by tunnels, the crystallization blockage of drainage blind pipes caused by the interaction of multiple factors weakens the drainage capacity of the tunnel drainage system, destroys the dynamic balance between the water flow entering the tunnel and the water flow flowing out of the tunnel, and leads to damage to tunnel circuits, corrosion of equipment, damage to lining structures, frost heaving and cracking of concrete, damage to ground buildings and the water environment around the tunnel. Eventually, the tunnel drainage system is severely blocked and fails.

[0003] At present, the blind pipe is an important part of the tunnel drainage system and is also the last channel for groundwater to flow out. The degree of blockage of blind pipe crystallization determines the smoothness of the drainage system. Blind pipe crystallization is a complex physical and chemical process. Scientifically monitoring the ion concentration in blind pipe drainage is of great significance for predicting the growth state and blockage degree of crystalline substances in blind pipes. Due to the concealment of the tunnel drainage system, and the blind pipe is curved, the water flow in the pipe is not full, and the flow rate changes greatly. Therefore, traditional water quality monitoring instruments cannot be applied to tunnel blind pipe ion monitoring. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems of difficult, low-efficiency and low-accuracy detection of the existing tunnel blind pipe water quality, and provide an auxiliary device for testing the ion concentration of tunnel blind pipe drainage, improve the efficiency and accuracy of detection data, and grasp the dynamic changes of ion components and ion concentration in the seepage water of tunnel drainage blind pipes in real time, so as to avoid the influence of water pipe blockage and blind pipe characteristics on detection data.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An auxiliary device for testing the ion concentration of tunnel blind pipe drainage includes a replaceable filter rod connected to the tunnel blind pipe. One end of the replaceable filter rod is connected to a flow-through cell through a water pipe. An inlet is provided at the bottom of one side of the flow-through cell, and an outlet is provided at the top of the other side. A group of probe holes are also provided in the cell body of the flow-through cell, and a sensor probe is embedded in each probe hole. The sensor probe is connected to an external water quality analyzer through a data line for real-time monitoring of the water quality of blind pipe drainage.

[0007] Furthermore, the replaceable filter rod includes a rod body, and connectors with sealing rings are provided at both ends of the rod body. One end is connected to the drainage outlet of the tunnel blind pipe through the connector, and the other end is connected to a water pipe, which is then connected and fitted with the water inlet of the flow-through cell.

[0008] Furthermore, a coarse filter and a fine filter are provided in the inner cavity of the replaceable filter rod. The coarse filter is on the side close to its water inlet, and the fine filter is on the side close to its water outlet.

[0009] Furthermore, both the coarse filter and the fine filter are arranged along the radial cross-section of the inner cavity of the replaceable filter rod, and their areas are also the same as the radial cross-sectional area of the inner cavity of the replaceable filter rod.

[0010] Furthermore, the specification of the coarse filter is 40 mesh, and the specification of the fine filter is 80 mesh, which are used to filter fine sediment particles in the blind pipe drainage and suspended matters such as waterproof board geotextile filaments in the blind pipe drainage respectively.

[0011] Furthermore, the flow-through cell is of a rectangular shell structure. The probe holes are vertically arranged at the upper part of the flow-through cell, and there is a gap between adjacent two probe holes. The sensor probe is also vertically embedded into the corresponding probe hole.

[0012] Compared with the prior art, the advantages of the technical solution of the present utility model are specifically as follows:

[0013] (1) The monitoring equipment of the present utility model is simply and reliably connected, safe and stable, realizing the external auxiliary monitoring of the blind pipe drainage, and avoiding the situation that test instruments cannot be installed inside the pipe during the ion monitoring of the tunnel blind pipe drainage;

[0014] (2) By connecting a replaceable filter rod with coarse and fine filters at the drainage outlet of the blind pipe, the present utility model effectively prevents the external water pipe from being blocked by the debris in the blind pipe drainage, ensuring the accuracy of the monitoring data;

[0015] (3) The device of the present utility model can assist in real-time obtaining the dynamic changes of the ion components and ion concentrations in the seepage water of the tunnel drainage blind pipe, as well as the change of the blind pipe water flow rate, which has important value for the construction and operation of mountain tunnels in water-rich strata. Description of the Drawings

[0016] Figure 1 It is the measuring point position diagram of the auxiliary device for testing the ion concentration of the tunnel blind pipe drainage of the present utility model;

[0017] Figure 2 It is the structural schematic diagram of the flow-through cell in this embodiment;

[0018] Figure 3 It is the schematic diagram of the flow-through cell connecting the instrument in this embodiment;

[0019] Figure 4 This is a schematic structural diagram of the replaceable filter rod of the present utility model. Detailed implementation manners Embodiment

[0020] To make the present utility model more clearly understood, the following further describes an auxiliary device for testing the ion concentration of tunnel blind pipe drainage in combination with the accompanying drawings. The specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] See Figure 1 , an auxiliary device for testing the ion concentration of tunnel blind pipe drainage, including a tunnel blind pipe 1 provided in a tunnel 5, characterized in that:

[0022] See Figure 1 and Figure 4 , the end of the tunnel blind pipe 1 is connected to a replaceable filter rod 2. The replaceable filter rod 2 includes a rod body 21. Both ends of the rod body 21 are provided with joints 22 with sealing rings. One end thereof is connected to the drainage outlet 1a of the tunnel blind pipe 1 through the joint 22, and the other end is connected to a water pipe 3;

[0023] A coarse filter 23 and a fine filter 24 are provided in the inner cavity of the replaceable filter rod 2. The coarse filter 23 is on the side close to its water inlet, and the fine filter 24 is on the side close to its water outlet. Both the coarse filter 23 and the fine filter 24 are arranged along the radial cross-section of the inner cavity of the replaceable filter rod 2, and their areas are also the same as the radial cross-sectional area of the inner cavity of the replaceable filter rod 2;

[0024] See Figure 1 , Figure 2 and Figure 3 , the water pipe 3 is further connected to the water inlet 41 of the flow cell 4. The water inlet 41 is provided at the bottom on one side of the flow cell 4. The water outlet 42 is provided at the top on the other side of the flow cell 4. A group of vertical probe holes 43 are also provided in the cell body of the flow cell 4, and a gap 43a is provided between adjacent two probe holes 43;

[0025] The sensor probe 44 is vertically embedded in the corresponding probe hole 43, and the sensor probe 44 is connected to an external water quality analyzer 46 through a data line 45 for real-time monitoring of the water quality of the blind pipe drainage.

[0026] When in use, it can be carried out according to the following steps, including:

[0027] (1) Select a monitoring point at the drainage outlet 1a of the tunnel blind pipe 1 and connect the replaceable filter rod 2. The other end of the replaceable filter rod 2 is connected to the water inlet 41 of the flow cell 4 through the water pipe 3, as shown in Figure 1 and Figure 2 ;

[0028] (2) One end of the flow-through cell 4 is connected to the blind pipe drainage passing through the replaceable filter rod 2, and the other end discharges water through the water outlet 42, as Figure 2 shown;

[0029] (3) Insert the sensor probe 44 into the probe hole 43 of the flow-through cell 4, and connect it to the water quality analyzer 46 with the data line 45, as Figure 3 shown;

[0030] (4) After the blind pipe drainage enters the cell body of the flow-through cell 4, the liquid level accumulates upward in the cell body until it touches the lower detection end of the sensor probe 44, and then continues to rise and is discharged through the water outlet 42.

[0031] In this embodiment, the replaceable filter rod 2 is 20 cm long and has a pipe diameter of 4 cm.

[0032] In this embodiment, the flow-through cell 4 is 15 cm high and 25 cm wide, the inner width of its cell body is 22 cm, and the width of each probe hole 43 is 3 cm.

[0033] In this embodiment, the specification of the coarse filter 23 is 40 mesh, which can filter out fine sediment particles in the blind pipe drainage.

[0034] In this embodiment, the specification of the fine filter 24 is 80 mesh, which can filter out suspended substances such as waterproof board geotextile filaments in the blind pipe drainage.

[0035] The utility model is applicable to the ion concentration monitoring of the blind pipe drainage in the water-rich strata mountain tunnels during construction and operation. The monitoring equipment is simply and reliably connected, safe and stable, realizes the external auxiliary monitoring of the blind pipe drainage, solves the problem that it is impossible to install test instruments inside the pipe during the ion monitoring of the tunnel blind pipe drainage, and the water pipe is blocked by the debris in the blind pipe drainage when using an external water pipe. It can assist in obtaining the ion components, the dynamic changes of the ion concentration, and the changes in the blind pipe water flow rate in the water seepage from the tunnel drainage blind pipe in real time, which has important value for the construction and operation of the water-rich strata mountain tunnels.

[0036] Except for the above embodiments, the utility model can also have other implementation manners. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the utility model.

Claims

1. An auxiliary device for testing the ion concentration of drainage water in a tunnel blind pipe, characterized in that: The invention comprises a replaceable filter rod (2) connected to a tunnel blind pipe (1); one end of the replaceable filter rod (2) is connected to a circulation pool (4) via a water pipe (3); a water inlet (41) is provided at the bottom of one side of the circulation pool (4); a water outlet (42) is provided at the top of the other side; a group of probe holes (43) are also provided in the body of the circulation pool (4); a sensor probe (44) is embedded in each probe hole (43); and the sensor probe (44) is connected to an external water quality analyzer (46) via a data line (45).

2. The auxiliary device for testing ion concentration of drainage in a tunnel blind pipe according to claim 1, characterized in that: The replaceable filter rod (2) comprises a rod body (21), and joints (22) with sealing rings are provided at both ends of the rod body (21). One end of the rod body (21) is connected to the drainage outlet (1a) of the tunnel blind pipe (1) through the joint (22), and the other end is connected to the water pipe (3). The water pipe (3) is further connected to the water inlet (41) of the circulation pool (4).

3. The auxiliary device for testing ion concentration of drainage water in a tunnel blind pipe according to claim 2, characterized in that: A coarse filter (23) and a fine filter (24) are provided in the inner cavity of the replaceable filter rod (2), wherein the coarse filter (23) is close to the water inlet side thereof and the fine filter (24) is close to the water outlet side thereof.

4. The auxiliary device for testing ion concentration of drainage water in a tunnel blind pipe according to claim 3, characterized in that: The coarse filter (23) and the fine filter (24) are both arranged along the radial cross-section of the inner cavity of the replaceable filter rod (2), and their areas are also the same as the radial cross-section area of ​​the inner cavity of the replaceable filter rod (2).

5. The auxiliary device for testing ion concentration of drainage water in a tunnel blind pipe according to claim 3, characterized in that: The specification of the coarse filter (23) is 40 meshes, and the specification of the fine filter (24) is 80 meshes.

6. The auxiliary device for testing ion concentration of drainage water from a tunnel blind pipe according to any one of claims 1 to 5, characterized in that: The circulation pool (4) is a rectangular shell structure, the probe holes (43) are vertically arranged at the upper part of the circulation pool (4), and a gap (43a) is provided between two adjacent probe holes (43), and the sensor probe (44) is also vertically embedded in the corresponding probe hole (43).

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