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Earth-pillar percolation simulating device

A simulation device and soil column technology, which is applied in the direction of measuring device, soil material testing, permeability/surface area analysis, etc., can solve the problems that the soil solution test analysis cannot be satisfied, and achieve the effect of reasonable structure

Inactive Publication Date: 2010-06-16
NINGXIA ACADEMY OF AGRI & FORESTRY SCI
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Problems solved by technology

[0002] As a soil measurement experimental device, the soil column has a main structure: a cylindrical column with soil in the column, and sampling holes are distributed at different heights on the barrel wall of the cylindrical column. According to the needs of the experiment, only Sampling and analysis of soil samples at different heights through sampling holes, but the test analysis of soil solution cannot meet the requirements

Method used

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Embodiment Construction

[0014] Such as figure 1 , 2 , 3, in the soil column 1, according to the requirements of the test and research, two infiltration pipes 2 are placed horizontally at different planned depths in the soil column, and the right end of each infiltration pipe protrudes from the wall of the soil column. The pipe 7 is connected with the water collecting bottle 6, and the outer wall of the percolation pipe is connected with the wall of the soil column in a sealed manner. Since the infiltration pipe is buried inside the soil layer in the soil column, due to the influence of the compact soil pores, there is negative pressure in the infiltration pipe, which affects the free flow of the seepage water sample in the soil. Therefore, in order to facilitate the measurement of the seepage water sample, a vent pipe 3 is installed at the left end of the percolation pipe, and the upper end of the vent pipe stretches out from the upper end of the soil column to communicate with the atmosphere. A fi...

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Abstract

The invention relates to experimental facilities in agriculture, in particular to an earth-pillar percolation simulating device. In the simulating device, a horizontally arranged filter tube is arranged in an earth pillar; one end of the filter tube extends out of the wall of the earth pillar to be connected with a water collecting bottle; the outer wall of the extending end of the filter tube is hermetically connected with the wall of the earth pillar; and the other end of the filter tube is sealed. The earth-pillar percolation simulating device simulates agricultural soils after being irrigated under the condition of undisturbed soil layer, and measures the water percolating capacity (percolation rate) in unit area and unit time and the content of contaminant in water percolation so as to calculate the discharge rate of the contaminant in farmland subsiding water in an area range and provide a scientific proof for agricultural subsiding water contamination preventing and controlling technology. The device has the characteristics of reasonable structure and practicability.

Description

technical field [0001] The invention relates to an agricultural experimental device, in particular to a soil column percolation simulation device. Background technique [0002] As a soil measurement experimental device, the soil column has a main structure: a cylindrical column with soil in the column, and sampling holes are distributed at different heights on the barrel wall of the cylindrical column. According to the needs of the experiment, only Sampling and analysis of soil samples at different heights through sampling holes is not enough for the laboratory analysis of soil solution. Contents of the invention [0003] The purpose of the present invention is to provide a soil column percolation simulation device which can conveniently extract the soil solution in the soil. [0004] To achieve the above object, the technical solution of the present invention is: a soil column seepage simulation device, comprising a soil column, characterized in that a horizontally place...

Claims

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Application Information

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IPC IPC(8): G01N15/08G01N33/24
Inventor 赵天成刘汝亮王世荣李友宏王芳陈晨洪瑜
Owner NINGXIA ACADEMY OF AGRI & FORESTRY SCI
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