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Underground water layered monitoring device and method based on dilution method

A monitoring device and groundwater technology, applied in the direction of measuring devices, instruments, etc., can solve problems such as waste of exploration resources, and achieve the effects of avoiding mixed water sample sampling, improving accuracy, and avoiding eccentricity

Pending Publication Date: 2021-12-03
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional single-pipe multi-layer monitoring wells cannot carry out stratified long-term monitoring and sampling because there is no stratification in the pipe, and it will also cause waste of exploration resources

Method used

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  • Underground water layered monitoring device and method based on dilution method
  • Underground water layered monitoring device and method based on dilution method
  • Underground water layered monitoring device and method based on dilution method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] see figure 1 Or 2, this embodiment discloses a groundwater stratified monitoring device based on the dilution method, including a source system 1 , a stratified water isolation system 2 , an acquisition system 3 , a control system 4 and a counterweight 5 .

[0058] The control system 4 includes a surface feeding pipe 401 , a surface water conduit 402 , a feeding water tank 413 and a water injection tank 414 .

[0059] see image 3 The source water tank 413 and the water injection tank 414 are all arranged on the ground surface, and the source water pump is arranged inside the source water tank 413, and the source water pump is connected with the source tap 403 outside the source water tank 413 through a conduit. A digital pressure gauge 407 is installed on the conduit between the input and distribution joints 403 . The source water tank 413 is equipped with a tracer, the tracer is sodium chloride solution, and the purpose is to eliminate the temperature convection cau...

Embodiment 2

[0077] This embodiment discloses a groundwater stratified monitoring method based on the dilution method, based on the device described in Embodiment 1, comprising the following steps:

[0078] 1) According to the geological survey data, determine the spatial information of the relatively impermeable layer, and combine the thickness of the aquifer and the actual survey requirements to determine the position and quantity of the detected aquifer, and then determine the value of M.

[0079] 2) According to the position of the relative impermeable layer, determine the length of the conduit 2015 in each of the layered water barriers 201 to ensure that the subsequent layered water barriers 2011 can be accurately installed in the area of ​​the relatively impermeable layer.

[0080] 3) Using N adapters 202 to connect M layered water barriers 201 together to form a layered water barrier system 2, the bottom end of the layered water barrier system 2 is connected to the counterweight 5, a...

Embodiment 3

[0092] see figure 1 Or 2, this embodiment discloses a groundwater stratified monitoring device based on the dilution method, including a source system 1 , a stratified water isolation system 2 , an acquisition system 3 , a control system 4 and a counterweight 5 .

[0093] The control system 4 includes a surface feeding pipe 401 , a surface water conduit 402 , a feeding water tank 413 and a water injection tank 414 .

[0094] see image 3 The source water tank 413 and the water injection tank 414 are all arranged on the ground surface, and the source water pump is arranged inside the source water tank 413, and the source water pump is connected with the source tap 403 outside the source water tank 413 through a conduit. A digital pressure gauge 407 is installed on the conduit between the input and distribution joints 403 .

[0095] The source distribution joint 403 is connected to M surface source pipes 401, and each surface source pipe 401 is equipped with a smart flow meter...

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Abstract

The invention discloses an underground water layered monitoring device and method based on a dilution method. The method comprises the following steps of 1) determining the position and number of aquifers; 2) determining the length of each wire conduit; (3) assembling the device; (4) pumping out the air of the device, and sinking the device into a drill hole; (5) pumping water into a layered waterproof bag and extruding with the inner wall of the drill hole; 6) closing a water pump after the numerical value of a digital pressure gauge is stable; 7) measuring the parameters of each layer of underground water in the three groups of drill holes as initial values by a plurality of sensors; (8) starting a source feeding water pump, and feeding a fixed amount of tracer solution; 9) recording the data output by the sensors in real time after the tracer solution is put and analyzing the data; and (10) after the conductivity of the underground water recovers to the initial value, repeating the steps (8)-(9) for three times, and averaging the three groups of flow velocity values and flow direction values. According to the invention, the interference of the vertical flow of underground water on the measurement precision can be effectively avoided, the problem of eccentricity of the source feeding device is effectively avoided, and multi-layer monitoring can be carried out on the seepage at different positions of the aquifers.

Description

technical field [0001] The invention relates to the technical field of groundwater monitoring, in particular to a groundwater layered monitoring device and monitoring method based on a dilution method. Background technique [0002] my country is a country with relatively poor groundwater. Especially with the development of our society and the improvement of industrialization, the contradiction between supply and demand of water resources has become increasingly prominent, and a large number of illegal overexploitation of groundwater has brought great pressure to the healthy development of the groundwater system. As the important parameters of the seepage field of the aquifer, the flow velocity and flow direction of groundwater can provide reliable parameter basis for the development and utilization of groundwater, groundwater environmental problems and engineering construction. Therefore, it is of great significance to detect the velocity and direction of groundwater flow. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 梁越孙志伟夏日风张宏杰代磊张斌刘楠楠汪魁徐炜薛宏程邢冰
Owner CHONGQING JIAOTONG UNIVERSITY
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