Study on influence of ecological slope protection
on slope rock-soil body’s matric suction |
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| Authors: | QI Guo-qing HUANG Run-qiu |
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| Institution: | 1. Sichuan University, Chengdu 610065, China; 2. Guangzhou Sihang Institute of Engineering Technology, Guangzhou 510230, China;
3. National Laboratory of Geological Hazard and Engineering Geological Environment Protection Chengdu University of Technology, Chengdu 610059, China |
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| Abstract: | The effects of vegetation transpiration and blocking surface runoff are researched; and three main influences of ecological slope protection on water content of slope rock-soil body and matric suction are put forward. The three aspects of influence are as follows: (1) The action of vegetation’s transpiration consumes the moisture of slope rock-soil body; and it recedes the water content of slope; increases the matric suction and benefits the stability of slope; (2) Vegetation blocks surface runoff and increases the rainfall infiltration, and it makes the water content increased, matric suction receded and disadvantage the stability of slope; (3) How the change of slope body water content and matric suction will benefit the stability of slope because of the existence of vegetation. All these decide by rainfall amount and rainfall type. Therefore, the slope must be made up into waterproof and drainage treatment for the ecological slope protection in area, with flush rainfall and torrential rain. |
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| Keywords: | ecological slope protection matric suction transpiration runoff coefficient |
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