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Method for regulating and controlling water and soil on basis of layered soil

A soil, water and soil technology, applied in the field of water and soil regulation, achieves the effects of simple construction, convenient material selection, and reduction of ineffective soil evaporation

Inactive Publication Date: 2019-08-30
QINGHAI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of water shortage in the desert, great engineering schemes such as "Red Flag River" and "Sky River" have been proposed in China. However, whether these projects can solve the problem of water shortage in the desert still faces multiple challenges in the fields of technology, economy, society and ecology. daunting challenges and great uncertainty

Method used

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  • Method for regulating and controlling water and soil on basis of layered soil
  • Method for regulating and controlling water and soil on basis of layered soil
  • Method for regulating and controlling water and soil on basis of layered soil

Examples

Experimental program
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Effect test

Embodiment 1

[0038] 1.1 Test material

[0039] Sand, gravel and chestnut soil in Xining urban area were selected as the soil for testing. The expansive clay was obtained by directly crushing chestnut soil and passing through a 0.075mm sieve. All soils were air-dried and sieved for later use (chestnut soil 2mm; sandy soil 2mm; clay soil 0.075mm). The drying method was used to measure the initial soil water content, dry bulk density and saturated water content of the soil, the soil particle composition was measured by the straw method, and the saturated hydraulic conductivity was measured by the constant head method (Table 1). The particle size of crushed stone is 1-3cm, which is construction sandstone. The cohesive soil soil-rock mixed medium is obtained by mixing clay and crushed stone, and the mixing ratio is 30% of the total mass of crushed stone.

[0040] Table 1 Basic physical properties of soil

[0041]

[0042] 1.2. Test method

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Abstract

The invention relates to a method for regulating and controlling water and soil on the basis of layered soil. The method is used for improving soil and specifically comprises the steps of digging sandditches in original soil, filling the sand ditches with sand, and covering the sand ditches filled with the sand with an expansive soil-stone mixed medium layer; the expansive soil-stone mixed mediumlayer comprises expansive clay and macadam; the sand ditches consist of sand soil, the sand soil is fine sand collected from a river channel or prepared artificially, the cross section of each sand ditch is elliptical, the long diameter of each sand ditch is 0.5-1 m, the short diameter of each sand ditch is 0.3-0.5 m, and the longitudinal section of each sand ditch is in an arc shape; every two adjacent sand ditches are formed in a wave line shape, and vegetation is planted on the original soil between every two adjacent sand ditches. The method can enhance the infiltration capacity of the soil and reduce the ineffective evaporation of the soil, thereby achieving the purpose of regulating and controlling the water and soil.

Description

technical field [0001] The invention relates to the technical field of water and soil regulation, in particular to a soil and water regulation method based on layered soil. Background technique [0002] my country is one of the countries with the most prominent environmental problems in the world. The total area of ​​arid and semi-arid areas is 5.04 million square kilometers, of which the arid area is 2.96 million square kilometers. In arid and semi-arid areas, rainfall is scarce, rainwater is concentrated, and vegetation is scarce, leading to problems such as water shortages in the region, and prominent ecological and environmental problems. Regional land desertification has become one of the serious problems in our country. At present, the area of ​​desertified land has reached 1.7311 million KM 2 , another 301,000 KM 2 The land has a clear trend of desertification. [0003] People have been exploring desertification control methods. There are many desertification con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 甘永德贾仰文魏加华解宏伟朱运强吕红玲甘清华朱厚华
Owner QINGHAI UNIVERSITY
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