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Infiltration and counter-infiltration testing and measuring method

A measurement method and experimental technology, applied in the field of experimental measurement of groundwater infiltration and reverse osmosis

Inactive Publication Date: 2006-03-08
INST OF MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this experimental method only measures the seepage properties located on a straight line, and in actual working conditions it is often necessary to understand the infiltration and reverse seepage properties on a section, so it is necessary to design an experimental method that meets the actual requirements

Method used

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  • Infiltration and counter-infiltration testing and measuring method
  • Infiltration and counter-infiltration testing and measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Such as figure 2 As shown, several small spaces are opened on a plexiglass box 5 with openings at both ends for installing the pressure sensor 4; the plexiglass box 5 is filled with soil and compacted, and then the pressure sensor 4 is installed in the plexiglass box On the body 5 and go deep into the soil, one deck of water-permeable stones 31,32 are respectively placed on the openings at both ends of the plexiglass box body 5 . Place the open end of the plexiglass box 5 vertically. When water seeps from the upper end, the water penetrates evenly into the soil through the permeable stone 31. As the water penetrates from top to bottom, the pressure sensors 4 at different parts measure the infiltrated water. Measured to obtain the infiltration properties of the soil.

Embodiment 2

[0016] The installation steps of the measuring device are the same as in Embodiment 1. Place the open end of the plexiglass box 5 vertically. When the lower end of the plexiglass box 5 is immersed in water, the water will penetrate into the soil evenly through the permeable stone 32. As the water penetrates from bottom to top, the pressure of different parts Sensor 4 measures the infiltration of water and thus the reverse seepage properties of the soil.

Embodiment 3

[0018] The installation steps of the measuring device are the same as in Embodiment 1. The open end of the plexiglass box 5 is placed horizontally, allowing water to infiltrate into the soil through the permeable stone 31 or the permeable stone 32 to measure the horizontal infiltration property.

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Abstract

The method includes following steps: (1) filling soil mass to be tested into a box body opened at two ends and impacting it; (2) homogenized medium is installed on two ends of soil mass; (3) setting up several pressure sensors on a side surface of the box and embedded to inside soil mass; (4) placing two ends of box opening in vertical position, and infiltration of water from upper and lower end, or placing two ends of box opening in horizontal position and infiltration of water from two sides horizontally. Permeability coefficient obtained from studying infiltration and exfiltration through the invented apparatus possesses practical meaning.

Description

technical field [0001] The invention relates to an experimental measurement method for studying groundwater infiltration and reverse osmosis. Background technique [0002] When studying landslides caused by rainfall and water level fluctuations, it is necessary to measure and evaluate groundwater. Therefore, the infiltration and reverse seepage properties of slopes under different working conditions have become the focus of research. The key parameter describing the properties of infiltration and reverse infiltration is the permeability coefficient. If the research is carried out under the condition of natural rainfall, the total amount of rainfall and the rainfall per unit time cannot be controlled. The tube measurement method is commonly used at present. Such as figure 1 As shown, the pipe 1 is filled with soil, and the pressure sensors 2 are evenly distributed on the pipe 1 along the axial direction of the pipe 1 . When water infiltrates from the upper part of pipe 1, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V9/02
Inventor 刘曰武
Owner INST OF MECHANICS CHINESE ACAD OF SCI