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System and method for measuring soil infiltration capability

A measurement system and soil technology, applied in soil material testing, measurement devices, permeability/surface area analysis, etc., can solve problems affecting test measurement accuracy, poor representativeness, small infiltration area, etc., and achieve accurate soil infiltration performance, Guarantee the original state and satisfy the effect of sufficient water supply

Inactive Publication Date: 2008-07-16
CHINA AGRI UNIV
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Problems solved by technology

But at the same time, the infiltration area is small (diameter 20cm), the depth is shallow (20-30cm), the representativeness is poor, and there is side seepage during the test, which affects the measurement accuracy of the test

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  • System and method for measuring soil infiltration capability
  • System and method for measuring soil infiltration capability
  • System and method for measuring soil infiltration capability

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Embodiment Construction

[0028] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] The principle of the present invention is as follows. In the early stage of soil infiltration, the speed of water flow into the soil is very fast. As time goes on, the infiltration rate continues to decrease and finally tends to be stable, reaching a stable infiltration rate. This change in time. In the case of point source water supply, a circular soil saturation zone will initially appear on the surface, and as time goes on, while keeping the water supply intensity constant, this circular saturation zone will gradually increase, and finally reach A stable wet radius. A curve of soil infiltration rate and soil wetting radius changing with time is shown in Figure ...

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Abstract

The invention discloses a system for measuring soil infiltration performance and includes a constant flow water supplying device, a point source inflow device, a soil storage device and a timing device. The constant flow water supplying device is connected with a point source inflow device, used for supplying water to the point source inflow device with a constant flow and monitors the output stream; the point source inflow device is arranged on the surface of the soil stored by a soil storage device and used for leading the water flow provided by the constant flow water supplying device to enter the soil with a point source inflow mode; the soil storage device is used for storing the soil and monitoring a wetting front of the soil; a timing device is used for recording the time corresponding to the quantity of the water provided by the constant flow water supplying device and the wetting front of the soil and acquiring the soil infiltration rate of the corresponding time according to the stream flow and a wetting radius of the soil of the corresponding time, thus meeting the condition of sufficient water supplying during the test process and ensuring the undisturbed performance of the soil; thereby being able to measure the soil infiltration performance simply and accurately.

Description

technical field [0001] The invention relates to the technical field of soil infiltration performance measurement, in particular to a point source inflow measurement system and method for soil infiltration performance. Background technique [0002] Infiltration refers to the process of water entering the soil and is an important link in the natural water cycle. The process of soil infiltration involves surface runoff, distribution of soil moisture after irrigation or rainfall, the replenishment of shallow groundwater by rainfall, and the migration of pollutants such as fertilizers and pesticides with water. Studying this process is of great significance for increasing soil infiltration, reducing surface runoff, and preventing soil erosion. [0003] Soil infiltration is an inherent property of soil. In the process of infiltration, the soil infiltration rate is high at the beginning, decreases with time, and finally tends to be stable, reaching a stable infiltration rate. Th...

Claims

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Application Information

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IPC IPC(8): G01N15/08G01N33/24G06F19/00
Inventor 雷廷武毛丽丽原翠萍刘汗闫丽娟
Owner CHINA AGRI UNIV
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