CN218211469U

CN218211469U - Tunnel gushes water monitoring devices

Info

Publication number: CN218211469U
Application number: CN202222220492.8U
Authority: CN
Inventors: 李时昌; 刘长猛; 张颖; 李峰; 盛娜; 蒙丹珑; 王宇星; 陈晓芳; 刘睿
Original assignee: Hebei Construction Investment Transportation Investment Co ltd
Current assignee: Hebei Construction Investment Transportation Investment Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-01-03
Anticipated expiration: 2032-08-23

Abstract

The utility model discloses a tunnel water burst monitoring device, which comprises an inserting pipe inserted into a drainage pipe for fixing and a flowmeter mounting pipe fixedly mounted at the outer end of the inserting pipe, wherein the other end of the flowmeter mounting pipe is fixedly provided with a turbulent flow control pipe, and the top of the flowmeter mounting pipe is provided with a flowmeter for measuring water flow; the turbulent flow control pipe adopts a soft rubber pipe, and the end part drainage section is set to be in a closed state that two side walls are attached when no water flow exists and in a structure that the two side walls are gradually opened along with the increase of the water flow pressure until the two side walls are in a full-open state when the water flow exists; or the turbulent flow control pipe adopts the PVC pipe, vertical pressure boost section that has a take the altitude including one section is vertical upwards, the utility model discloses the micro-change of water yield in can the real-time supervision tunnel drain pipe does not receive turbulent flow or the influence of non-full pipe, and monitoring accuracy is high.

Description

Tunnel gushes water monitoring devices

Technical Field

The utility model relates to a tunnel monitoring devices that gushes water belongs to the track traffic field.

Background

Along with the deep propulsion of railway and highway construction, unfavorable geological tunnels such as rich water, fracture zones and karst are more and more. Along with this, receive the influence of groundwater for tunnel construction safety risk and operation safety risk are very high. The discharge amount of tunnel underground water is obtained through real-time monitoring, the change trend of the underground water amount is analyzed, the sudden water gushing risk possibly existing can be identified in the construction process, the risk of blockage of a drainage pipeline can be identified in the operation process, and then the tunnel construction safety risk and the operation safety risk are reduced. How to monitor the underground water quantity of the tunnel in real time is a difficult problem to be solved in front of tunnel technicians.

In the prior art, the method is generally lagged behind when the underground water quantity is judged by analyzing the phenomena of blockage of a pipe orifice of a drainage pipe 5 by sediments and the like. There is also a method of determining the amount of groundwater by monitoring the water level of the drainage ditch 6 (the drainage pipe 5 and the drainage ditch 6 are vertically arranged, and fig. 1 is a schematic structural view of a longitudinal section of the drainage pipe 5 and a cross section of the drainage ditch 6). Gutter water level monitoring is typically accomplished using a water level sensor. Water level sensors fall into two broad categories, contact and non-contact. The contact type needs to place a sensor in water to measure data, and mainly comprises a measuring weir meter, a vibrating wire type osmometer and a fiber grating osmometer. Non-contact requires that a sensor probe, including ultrasonic level meters and radar level meters, be placed over the gutter for measurement.

(1) Contact level sensor:

although the measurement accuracy of the vibrating wire osmometer and the fiber grating osmometer is higher than that of the measuring weir meter, if the water flow in the drainage ditch 6 contains more silt, the vibrating wire osmometer and the fiber grating osmometer can be blocked, and the measurement is influenced; meanwhile, the price of the vibrating wire osmometer and the fiber grating osmometer is higher than that of a measuring weir meter, so that the vibrating wire osmometer and the fiber grating osmometer are also more commonly used as the measuring weir meter. Fig. 2 is a diagram of the field installation of a weir meter. However, the weir meter needs to install a weir plate in the drainage ditch 6 and punch a hole on the drainage ditch cover to install the weir meter; meanwhile, a special vibrating wire type data acquisition instrument is required to be equipped to calculate the water level. The data acquisition instrument then connects the data to the tunneling network via wireless or RS-485 lines.

(2) Non-contact water level sensor

Compared with a radar liquid level meter, the ultrasonic liquid level meter has a simple structure and low price, so that the ultrasonic liquid level meter is widely applied in a non-contact mode, and a field installation drawing of the ultrasonic liquid level meter is shown in figure 3 (in the drawing, symbols are B: a blind area, D: a hole distance, L: a material level, H: an installation height, F: a material level fullness and L = H-D). The working principle is as follows: the probe firstly sends ultrasonic waves downwards, the ultrasonic waves are reflected back to the probe after meeting the water surface, and the distance from the probe to the water surface is calculated by utilizing the round-trip time and the sound velocity. Since a cover plate needs to be laid above the drainage ditch 6, the cover plate needs to be removed or punched and heightened when the ultrasonic liquid level meter is installed. The data of the ultrasonic liquid level meter is directly calculated in the equipment through wired transmission, and if the data are transmitted wirelessly, a wireless transmitter is required to be added.

The water level sensor is adopted to monitor the water level change of the drainage ditch 6, and the method is not accurate enough because the top surface of the water flow in the drainage ditch is measured, and the waves are unstable; and when sediment in the bottom of the ditch changes, the cross section of the ditch is affected, so that the micro-change of the underground water level is difficult to accurately describe.

In addition, the water discharged from the tunnel ring to the drain pipe often runs short of the pipe and is turbulent, and it is difficult to monitor the water by using a flow meter. However, the change trend of the underground water volume and the water pressure of the key sections of the tunnel is an important basis for the control of the tunnel construction safety and the operation safety. Therefore, it is an urgent technical problem to design a special water level monitoring device capable of real-time monitoring of the flow rate of the drainage pipe (non-full pipe and turbulent flow).

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve above-mentioned technical problem, provide a tunnel monitoring devices that gushes water, the micro-change of water yield in can real-time supervision tunnel drain pipe does not receive turbulent flow or the influence of non-full pipe, and the monitoring precision is high.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a tunnel water burst monitoring device comprises an inserting pipe inserted into a drainage pipe for fixing and a flowmeter mounting pipe fixedly mounted at the outer end of the inserting pipe, wherein a turbulent flow control pipe is fixedly arranged at the other end of the flowmeter mounting pipe, and a flowmeter for measuring water flow is arranged at the top of the flowmeter mounting pipe;

the turbulent flow control pipe adopts a soft rubber pipe, and the end part drainage section is set to be in a closed state that two side walls are attached when no water flow exists and in a structure that the two side walls are gradually opened along with the increase of the water flow pressure until the two side walls are in a full-open state when the water flow exists; or the turbulence control pipe adopts a PVC pipe and comprises a vertical pressurizing section with a certain height vertically upwards.

The utility model discloses technical scheme's further improvement lies in: the length direction of the flowmeter installation pipe is the same as that of the drain pipe.

The utility model discloses technical scheme's further improvement lies in: the length direction of the flowmeter installation pipe is perpendicular to the length direction of the drain pipe.

The utility model discloses technical scheme's further improvement lies in: when the turbulent flow control pipe is a soft rubber pipe, the section structure is a conical structure with the diameter of the water outlet reduced.

The utility model discloses technical scheme's further improvement lies in: when the turbulent flow control pipe is a PVC pipe, the bottom of the vertical pressurizing section is connected with a horizontal leading-out section which is fixedly connected with the flowmeter installation pipe; the top of the vertical pressurizing section is connected with a horizontal drainage section; the horizontal leading-out section and the horizontal drainage section are respectively vertical to the vertical pressurization section, and the horizontal leading-out section and the horizontal drainage section are mutually vertical.

The utility model discloses technical scheme's further improvement lies in: when the turbulence control pipe is a PVC pipe, the bottom of the vertical pressurizing section is fixedly connected with the flow meter installation pipe, and the top of the vertical pressurizing section is connected with the horizontal drainage section, and the flow meter installation pipe is the same as the horizontal drainage section in length direction and is perpendicular to the vertical pressurizing section respectively.

The utility model discloses technical scheme's further improvement lies in: the height of the vertical pressurizing section is 10-20 cm, and the length of the horizontal drainage section is 5-10 cm.

The utility model discloses technical scheme's further improvement lies in: the inserting pipe is a PVC pipe, and the outer diameter of the inserting pipe is matched with the inner diameter of the drain pipe.

Since the technical scheme is used, the utility model discloses the technological progress who gains is:

the utility model discloses a pressure boost effect of turbulent flow control tube for water in the flowmeter installation pipe is full pipe all the time, thereby realizes the purpose of flowmeter monitoring tunnel drain pipe water yield, has solved that rivers are the turbulent flow in the tunnel drain pipe, and when non-full pipe water, the problem of unable monitoring water yield micro-change improves the monitoring accuracy.

Drawings

FIG. 1 is a schematic structural view showing a longitudinal section of a drain pipe and a cross section of a drain ditch;

FIG. 2 is a schematic view of a weir meter installation in the field;

FIG. 3 is a schematic view of the installation of an ultrasonic level gauge;

fig. 4 is a schematic structural diagram of a first embodiment of the present invention;

FIGS. 5a-5c are schematic diagrams of different states of the outlet section of the turbulent control tube according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a second embodiment of the present invention;

fig. 7 is a schematic structural view of a turbulent flow control tube according to a second embodiment of the present invention;

fig. 8 is a schematic perspective view of a third embodiment of the present invention;

the device comprises a flow meter 1, a flow meter 2, a flow meter installation pipe 3, a turbulence control pipe 3-1, a horizontal leading-out section 3-2, a vertical pressurizing section 3-3, a horizontal drainage section 4, a plug pipe 5, a drainage pipe 6 and a drainage ditch.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

the first embodiment is as follows:

as shown in figure 4, the tunnel water burst monitoring device comprises an inserting pipe 4, a flowmeter installation pipe 2 and a turbulence control pipe 3 which are sequentially connected in series, wherein the inserting pipe 4 is inserted into a tunnel drain pipe 5 and extends into a certain distance, so that the device is stable and reliable in installation. The top of the flowmeter installation pipe 2 is provided with a flowmeter 1 for measuring the flow of water. The flow meter mounting pipe 2 may have the same longitudinal direction as the drain pipe 5, or may have a direction perpendicular to the longitudinal direction of the drain pipe 5 (i.e., the same longitudinal direction as the drain 6).

The turbulent flow control pipe 3 is made of a soft rubber pipe and has certain deformation capacity. The end part drainage section is set to be in a closed state that two side walls are attached when no water flow exists, and is in a structure that the two side walls are gradually opened to be in a full-open state along with the increase of the water flow pressure when the water flow exists; FIG. 5a is a diagram showing the closed state of the drainage segment of the turbulent control tube 3 when the outlet water pressure is not applied, i.e., the amount of water is 0; FIG. 5b is a diagram showing a half-open state when the water discharge section of the turbulent control tube 3 is under the pressure of the water flowing out when a certain amount of water flows; fig. 5c is a view showing that the tunnel drain pipe 5 has a large amount of water discharged and the turbulent control pipe 3 is fully opened.

This embodiment is through opening and shutting of turbulent control pipe 3, and the water in the flowmeter erection tube 2 that makes is full pipe all the time to realize the purpose of flowmeter monitoring tunnel drain pipe water yield.

The second embodiment:

as shown in fig. 6, the present embodiment is different from the first embodiment in that: the length direction of the flowmeter installation pipe 2 of the embodiment is the same as that of the drain pipe 5, the turbulence control pipe 3 is a PVC pipe and comprises a vertical pressurizing section 3-2 with a certain height vertically upwards, a horizontal leading-out section 3-1 is connected to the bottom of the vertical pressurizing section 3-2, and the horizontal leading-out section 3-1 is fixedly connected with the flowmeter installation pipe 2 as shown in FIG. 7; the top of the vertical pressurizing section 3-2 is connected with a horizontal drainage section 3-3; the horizontal leading-out section 3-1 and the horizontal drainage section 3-3 are respectively vertical to the vertical pressurizing section 3-2, the horizontal leading-out section 3-1 and the horizontal drainage section 3-3 are also vertical to each other, and the horizontal drainage section 3-3 is consistent with the drainage ditch 6 in direction.

This embodiment highly realizes the pressure boost effect through vertical pressure boost section 3-2, and the water in the flowmeter erection tube 2 that makes is full pipe all the time to realize the mesh of flowmeter monitoring tunnel drain pipe water yield.

Compared with the first embodiment, the present embodiment does not worry about the aging problem of the soft hose. Meanwhile, the manufacturing is simpler, and the drainage is arranged on the side ditch of the impact ditch.

Example three:

the present embodiment is an improvement of the second embodiment in consideration of the problem that the width of the drainage ditch 6 is insufficient and it is difficult to install the flowmeter 1.

As shown in fig. 8, the present embodiment is different from the second embodiment in that: the flow meter mounting pipe 2 of the present embodiment has a longitudinal direction perpendicular to the longitudinal direction of the drain pipe 5, i.e., the longitudinal direction of the flow meter mounting pipe 2 is the same as the direction of the drain 6. The turbulence control pipe 3 does not comprise a horizontal leading-out section 3-1, and only comprises a vertical pressurizing section 3-2 and a vertical pressurizing section 3-2. The bottom of the vertical pressurizing section 3-2 is fixedly connected with the flowmeter installation pipe 2, the top of the vertical pressurizing section 3-2 is connected with the horizontal drainage section 3-3, and the flowmeter installation pipe 2 and the horizontal drainage section 3-3 are identical in length direction and are respectively perpendicular to the vertical pressurizing section 3-2.

The flowmeter installation pipe 2 is consistent with the ditch direction, and the length is long enough, so that the flowmeter 1 is convenient to install. This embodiment can be used when the width of the drainage ditch 6 is insufficient without considering the width of the drainage ditch 6.

Claims

1. The utility model provides a tunnel monitoring devices that gushes water which characterized in that: the device comprises an inserting pipe (4) inserted into a drain pipe (5) for fixing and a flow meter mounting pipe (2) fixedly mounted at the outer end of the inserting pipe (4), wherein a turbulent flow control pipe (3) is fixedly arranged at the other end of the flow meter mounting pipe (2), and a flow meter (1) for measuring water flow is arranged at the top of the flow meter mounting pipe (2);

the turbulent flow control pipe (3) adopts a soft rubber pipe, and the end part drainage section is set to be in a closed state with two attached side walls when no water flow exists and in a structure with water flow and two gradually opened side walls along with the increase of water flow pressure until the two side walls are in a full-open state; or the turbulence control pipe (3) adopts a PVC pipe and comprises a vertical pressurizing section (3-2) which is vertically upward and has a certain height.

2. The device of claim 1, wherein: the length direction of the flowmeter installation pipe (2) is the same as that of the drain pipe (5).

3. The device of claim 1, wherein: the length direction of the flowmeter installation pipe (2) is vertical to the length direction of the drain pipe (5).

4. The device for monitoring water burst in tunnel according to claim 2 or 3, wherein: when the turbulent flow control pipe (3) is a soft rubber pipe, the section structure is a conical structure with the diameter of the water outlet reduced.

5. The device of claim 2, wherein: when the turbulence control pipe (3) is a PVC pipe, the bottom of the vertical pressurizing section (3-2) is connected with a horizontal leading-out section (3-1), and the horizontal leading-out section (3-1) is fixedly connected with the flowmeter installation pipe (2); the top of the vertical pressurizing section (3-2) is connected with a horizontal drainage section (3-3); the horizontal leading-out section (3-1) and the horizontal drainage section (3-3) are respectively vertical to the vertical pressurizing section (3-2), and the horizontal leading-out section (3-1) and the horizontal drainage section (3-3) are vertical to each other.

6. The device of claim 3, wherein: when the turbulence control pipe (3) is a PVC pipe, the bottom of the vertical pressurizing section (3-2) is fixedly connected with the flowmeter installation pipe (2), the top of the vertical pressurizing section is connected with the horizontal drainage section (3-3), and the flowmeter installation pipe (2) and the horizontal drainage section (3-3) are identical in length direction and are perpendicular to the vertical pressurizing section (3-2) respectively.

7. The device for monitoring water burst in tunnel according to claim 5 or 6, wherein: the height of the vertical pressurizing section (3-2) is 10-20 cm, and the length of the horizontal drainage section (3-3) is 5-10 cm.

8. The device of claim 1, wherein: the inserting pipe (4) is a PVC pipe, and the outer diameter of the inserting pipe is matched with the inner diameter of the drain pipe (5).