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Soil column testing apparatus for simulating solute transport in consolidated soil

A technology of solute migration and test equipment, applied in the direction of measuring equipment, instruments, scientific instruments, etc., can solve the problems of unstable infiltration rate, large human influence, uneven soil density, etc.

Pending Publication Date: 2017-02-15
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: (1) The experimental results are greatly affected by human beings, because the soil density in the artificially filled soil column is inhomogeneous, and the manual filling of the soil column is time-consuming and laborious; (2) The experiment is limited by the type of soil, It can only be applied to some artificially screened soils with a single component and poor collapsibility (such as sandy soil, gravel soil, etc.), and cannot simulate the movement of pollutants in consolidated soil under natural conditions.
(3) The permeation rate is unstable when the pollutant solution is injected

Method used

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  • Soil column testing apparatus for simulating solute transport in consolidated soil
  • Soil column testing apparatus for simulating solute transport in consolidated soil
  • Soil column testing apparatus for simulating solute transport in consolidated soil

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with drawings and embodiments.

[0015] as attached figure 1 As shown, the pressurized consolidation device includes a pneumatic reversing valve 1-1, a cylinder 1-2, a piston rod 1-3, a pressure plate 1-4, a reaction screw 1-5, a base 1-6, a precision Pressure gauge 1-7, high-pressure air pipe 1-8, pneumatic pressure regulating valve 1-9, reaction beam 1-10, fastening nut 1-11 and first permeable stone 1-12, one end of high-pressure air pipe 1-8 is connected to the air One end of the press is connected to the cylinder 1-2, the upper part of the cylinder 1-2 is provided with a pneumatic reversing valve 1-1 and a pneumatic pressure regulating valve 1-9, the precision pressure gauge 1-7 is connected to the upper part of the cylinder 1-2, and the cylinder 1 -2 is placed on the reaction beam 1-10, the upper end of the piston rod 1-3 is located in the cylinder 1-2, and the lower end passes through the end o...

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Abstract

The invention discloses a soil column testing apparatus for simulating solute transport in consolidated soil. The apparatus mainly comprises a pressurization and consolidation device and a soil column seepage device, wherein the pressurization and consolidation device mainly controls a pressurization disk via an air compressor and an air cylinder to apply a pressure onto a soil sample in a soil column so as to allow the soil sample to be consolidated, and then the soil column seepage device is used for seepage testing of the consolidated soil sample. According to the invention, a water head at the upper part of the soil column can be maintained at a constant value by controlling the placing height of Mariotte's bottle, so pore water in the soil column is allowed to be transported in the consolidated soil under the condition that the water head maintains constant, and the phenomena of transport and diffusion of pollutants in the consolidated soil under a constant water head condition is simulated.

Description

technical field [0001] The invention relates to a soil column test device for simulating the movement of solute in consolidated soil, which can carry out the test of solute movement in the consolidated soil under the condition of constant water head. Background technique [0002] The discharge of pollutants in modern society has caused serious groundwater pollution. Pollutants discharged from the surface dissolve and infiltrate into groundwater with rainfall, migrate and spread along the direction of groundwater runoff, causing damage to the groundwater environment, affecting the living environment of animals and plants, and gradually eroding the foundations of buildings, affecting human society and buildings security. Therefore, the study of soil solute transport has become an important research topic in environmental geotechnical engineering. Soil column test is an important method to study soil solute transport. [0003] At present, when soil column tests are carried o...

Claims

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Application Information

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IPC IPC(8): G01N13/00
CPCG01N13/00
Inventor 谢海建张春华王韶伊王顺玉陈云敏
Owner ZHEJIANG UNIV
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