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Experimental area underground water level accurate control system and method

A groundwater level and control system technology, applied in the control/regulation system, liquid level control, non-electric variable control and other directions, can solve the problems of control accuracy and speed need to be improved, and achieve the effect of fast and efficient groundwater level adjustment and easy control

Active Publication Date: 2016-07-20
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the control accuracy and speed still need to be improved

Method used

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  • Experimental area underground water level accurate control system and method
  • Experimental area underground water level accurate control system and method

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Experimental program
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Effect test

Embodiment 1

[0025] This embodiment is a precise control system for the groundwater level in the test area, such as figure 1 shown. This embodiment includes: a sand and gravel infiltration layer 2 arranged at the lower part of the original soil layer 1 in the experimental area, and a collection and drainage pipe network 3 arranged horizontally and vertically is buried in the sand and gravel infiltration layer. The connecting pipe 4 is at least connected to a vertically arranged pre-fill drainage well 5, the pre-fill drainage well is connected to the water outlet pipe 6 and the water inlet pipe 7, and the water inlet pipe is connected to the water supply tank 8; the original The soil layer is provided with at least one groundwater level logging well 9; the bottom of the groundwater level logging well is provided with a groundwater level gauge 10, and the connecting pipe is provided with a connecting valve 11 and a drainage pressure gauge 12. The bottom of the filling and drainage well is ...

Embodiment 2

[0059] This embodiment is an improvement of the first embodiment, which is the refinement of the original soil layer and the sand and gravel seepage layer in the first embodiment. At least one layer of filter gauze is arranged between the original soil layer and the gravel infiltration layer described in this embodiment, and the mesh number of the filter gauze is not less than 60 mesh.

[0060] To ensure that the water flow pressure field on the soil surface is similar to the soil in the plain area, a reverse filter gauze is set between the original soil layer and the sand and gravel infiltration layer. The anti-filter gauze can use filter gauze or other filter materials. Considering that the amount of use is very large, the present embodiment selects low-cost filter gauze for use.

Embodiment 3

[0062] This embodiment is an improvement of the above embodiment, and is a refinement of the collection and drainage pipe network of the above embodiment. The collection and drainage pipe network described in this embodiment is made of hard plastic or metal pipes, and is in the shape of a grid (such as figure 2 Shown), the pipe wall is evenly distributed with less than 1 mm permeable holes.

[0063] In this embodiment, pipes are vertically staggered and connected, and the distances between the vertically connected parts are equal to form a grid shape, so as to form a uniform inlet and outlet pipe network. Due to the many connected parts of the square grid, the pressure of water in the grid-shaped pipe network is relatively uniform, which can form a uniform water pressure on the soil, and can also quickly and evenly discharge the water in the soil.

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Abstract

The invention relates to an experimental area underground water level accurate control system and method. The experimental area underground water level accurate control system comprises a sandstone percolation layer in which a water supply and drainage pipe network is horizontally and vertically arranged in an embedded way. The water supply and drainage pipe network is at least connected with a vertically arranged prefilling drainage well through a communicating pipe. The bottom part of an underground water level logging well is provided with an underground water level indicator. The communicating pipe is provided with a communicating valve and a water supply and drainage pressure gauge. The bottom part of the prefilling drainage well is provided with a prefilling drainage level indicator. A water inlet pipe is provided with a water inlet valve and a water inlet flowmeter. A water outlet pipe is provided with a water outlet valve and a water outlet flowmeter. The water level in the prefilling drainage well is controlled based on the height of the underground water level of an original soil layer and other various parameters, and the water level of the original soil layer is influenced by water pressure of the prefilling drainage well so that the objective of accurately controlling the underground water level of the original soil layer can be achieved. The water level of the prefilling drainage well is quite easy to control, and pressure of the prefilling drainage well can also be rapidly transferred to the original soil layer so that rapid and efficient underground water level adjustment can be realized.

Description

technical field [0001] The invention relates to a precise control system and method for groundwater level in a test area, which is a hydrological experiment system and method, a SPAC (soil-vegetation-atmosphere continuum) system test system and method, and a system and method for large-scale experiments. Experimental system and method for automatic control of underground water level in residential area. Background technique [0002] The groundwater process is an important part of the water cycle process, which is closely related to surface infiltration, soil water leakage, soil water evaporation, and vegetation growth. In order to accurately understand and study the influence of groundwater on the water cycle process, vegetation growth, soil ecology and other processes, it is necessary to simulate the soil groundwater level. With the deepening of people's understanding, the scale of groundwater level simulation experiments is getting bigger and bigger. As the scale increas...

Claims

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Application Information

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IPC IPC(8): G05D9/12G01N33/24
CPCG01N33/24G05D9/12
Inventor 龚家国赵勇尚毅梓王建华邵薇薇秦韬
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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