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 infiltration rate of the surface soil, disturb the surface soil structure, etc., and achieve the effects of low cost, simple operation and guaranteed accuracy.

Inactive Publication Date: 2011-11-23
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 sur

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

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Experimental program
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Effect test

Embodiment 1

[0025] as attached figure 2 , 3 As shown, the present invention can only measure the shortcoming of the infiltration rate below the soil surface for the current Kyufu instrument method, and proposes a specific device for surface water collection and covering soil, so that the Kyueff instrument method is also applicable to the measurement of surface soil infiltration rate. Determination.

[0026] A method for measuring surface soil infiltration rate, comprising the steps of:

[0027] 1. Making a round tube. Two metal round tubes 3 and 4 with a height of 16 cm and inner diameters of 10 cm and 20 cm were made, and the wall thickness of the metal round tubes was 3 mm. The lower edge of the metal round tube is ground into a knife-edge shape;

[0028] 2. Arrange the round tube. Place the edged end of the small metal round tube 3 on the horizontal surface of the area to be tested, and press and rotate it slightly to ensure that it is in close contact with the ground; The large ...

Embodiment 2

[0033] A method for measuring surface soil infiltration rate, except that in step 1, the metal round pipe is a steel round pipe, the height of the round pipe is 18cm, the thickness of the pipe wall is 5mm, and the height of the covering soil in step 3 is 10cm. All are identical with embodiment one.

Embodiment 3

[0035] A method for measuring surface soil infiltration rate, except that in step one, the circular pipe height is 20cm, the pipe wall thickness is 2mm, and the cover soil height is 8cm in step three, all the other are the same as embodiment one.

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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 of the 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 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 is also an important indicator that reflects the ability of soil to conserve water and resist erosion. The Guelph Permeameter is a commonly used instrument for measuring the infiltration rate below the soil surface. At present, many scholars at home and abroad try to use it to measure the infiltration rate of the surface soil, but because it needs to disturb the structure of the surface soil during the measurement process, so There is a large deviation between the measured surface soil infiltration rate...

Claims

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Application Information

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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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