The Influence of Rock Fragment Cover on Soil Infiltration Properties

China Rural Water and Hydropower ›› 2020 ›› (2) : 100-104.

FANG Kai 1 ，ZHENG Jia-xing2 ，ZHANG Li 3 ，LI Zi-chun3 ，ZHAO Yu3

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Soil infiltration is a complicated process, and the rock fragment cover will affect soil infiltration properties. In this paper, the related parameters of soil infiltration properties are analyzed through gravel covering experiment and soil-gravel mixing experiment. The results show that the stable infiltration rate, sorptivety, hydraulic conductivity and soil effective porosity decrease with the increase in gravel coverage soil-gravel mixing degree. In the infiltration of different gravel coverage soil-gravel mixing degree, the variation of relative parameters is significant (P< 0.05). This shows that the effective porosity of the soil decreases with the increase in the gravels, and the water movement channel is so complicated as to limit the infiltration of water. In the soil-gravel mixing experiment, sorptivety, hydraulic conductivity and soil effective porosity decreases sharply with the increase in gravel coverage soil-gravel mixing degree, which is higher than those in the gravel covering experiment. The gravels in the soil can change the soil infiltration properties. Studying the effect of gravel on soil infiltration characteristics further is of practical significance. It is significant to study the possibility of using the rock fragment cover to maintain soil and water for engineering slopes.

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rock fragment cover / soil infiltration properties / soil-gravel mixing / slope protection / soil infiltration rate ;soil hydraulic conductvity / soil infiltration test / soil porosity

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FANG Kai ，ZHENG Jia-xing，ZHANG Li ，LI Zi-chun ，ZHAO Yu. The Influence of Rock Fragment Cover on Soil Infiltration Properties. China Rural Water and Hydropower. 2020, 0(2): 100-104

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Received	Revised	Published
2019-05-09	2019-07-12	2020-02-15
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2020-08-16

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