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Method for measuring permeation rate of surface soil

A surface soil and rate technology, applied in the field of soil physics, can solve the problems of inability to accurately measure the surface soil infiltration rate, disturb the surface soil structure, etc., and achieve the effects of low cost, simple operation, and guaranteed accuracy.

Inactive Publication Date: 2012-10-10
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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Problems solved by technology

[0003] The present invention aims at the shortcomings of the current Küeff instrument method that disturbs the surface soil structure and cannot accurately measure the infiltration rate of the surface soil, and proposes a water-collecting and soil-covering device on the surface, which can measure the surface soil without destroying the surface soil structure. Soil Infiltration Rate Method

Method used

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  • Method for measuring permeation rate of surface soil
  • Method for measuring permeation rate of surface soil
  • Method for measuring permeation rate of surface soil

Examples

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Effect test

Embodiment 1

[0025] As attached figure 2 , 3 As shown, the present invention addresses the shortcoming that the current Guevometer method can only measure the infiltration rate below the surface of the soil, and proposes a special device for collecting water and covering soil on the surface, so that the Guevometer method is also suitable for the infiltration rate of surface soil. Determination.

[0026] A method for measuring the infiltration rate of surface soil includes the following steps:

[0027] 1. Making round tubes. Two metal round pipes 3 and 4 with a height of 16 cm and an inner diameter of 10 cm and 20 cm were produced, and the wall thickness of the metal round pipes were both 3 mm. The bottom edge of the metal round tube is polished into a blade shape;

[0028] 2. Lay out the round pipe, place the edge of the small metal round pipe 3 on the horizontal surface of the area to be measured, press and rotate it slightly to ensure that it is in close contact with the surface; take the ce...

Embodiment 2

[0033] A method for measuring the infiltration rate of surface soil. Except in step 1, the metal pipe is a steel pipe, the height of the pipe is 18cm, the thickness of the pipe wall is 5mm, and the height of the overburden in step 3 is 10cm. The same as the first embodiment.

Embodiment 3

[0035] A method for measuring the infiltration rate of surface soil, except that in step one, the height of the round pipe is 20cm, the thickness of the pipe wall is both 2mm, and the height of the covering soil in step three is 8cm, the rest are the same as in the first embodiment.

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Abstract

The invention relates to a method for measuring a permeation rate of surface soil, comprising the steps of: arranging a big metal round tube and a small metal round tube near the water outlet of a Guelph permeameter, wherein the two round tubes take the shape of concentric rings and are same in height and different in diameter; filling soil between the two round tubes; adding water into the soil until the soil is saturated in moisture content; and then measuring the permeation rate of the surface soil. The method has the advantages that: 1, according to the provided installation, the method for measuring the permeation rate of the soil by the Guelph permeameter can be improved, so that the measurement range of the Guelph permeameter is enlarged to a level of being capable of more accurately measuring the permeation rate of the surface soil from a level of being capable of measuring the permeation rate of the soil under the surface only before improvement; 2, the designed small metal round tube can be tightly combined with the surface soil so as to ensure that certain water accumulation is formed in the small metal round tube; and 3, in the designed big metal round tube, the soil is filled in and is saturated by adding water, therefore, during the measurement, water pressure inside and outside the small metal round tube wall can be ensured to be accordant, lateral permeation ofthe accumulated water in the tube to the outside is furthest reduced, and accuracy of a measurement result is ensured.

Description

Technical field [0001] The invention relates to a method for measuring the infiltration rate of surface soil in the technical field of soil physics, in particular to a method for measuring the infiltration rate of surface soil by using an improved device of a Guelph Permeameter. Background technique [0002] Soil infiltration performance is an important water physical property of soil. It is an important parameter that affects the ratio of rainfall into surface runoff and soil water, and it is also an important indicator of soil water conservation and erosion resistance. The Guelph Permeameter is a commonly used instrument for measuring the infiltration rate below the surface of the soil. At present, many scholars at home and abroad try to use it to determine the infiltration rate of the surface soil. However, it needs to disturb the surface soil structure during the measurement process. The measured surface soil infiltration rate has a large deviation from the actual result, whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08
Inventor 熊东红龙翼严冬春翟娟苏正安
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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