Zhang L.-M.,Southwest Geotechnical Investigation and Design Institute of China Nuclear Industry |
Zheng M.-X.,East China Jiaotong University |
He M.,Southwest Geotechnical Investigation and Design Institute of China Nuclear Industry
Yantu Lixue/Rock and Soil Mechanics | Year: 2010
During the period of rainfall, groundwater level in the slope will rise; the matric suction and the temporary pore water pressure will change with time and rainfal1; after constructed the anti-slide piles, retaining wall or drainage structures, the change of the nature of slip zone and anti-slide structure settings whether affect the natural drainage channel of landslides, which lead to the groundwater table rising of landslide, then affect the effectiveness of landslide control. This paper discusses variable rule of volumetric water content and matric suction and seepage-field in the landslide under different conditions of rainfall infiltration and groundwater level change that on the saturated-unsaturated seepage model test and analysis of number value. On this basis, the contribution of matric suction to shear strength is considered. Studies have suggested: The matric suction in the landslide influenced by conditions such as the rainfall intensity, etc.; different change laws appear at different depths. So it should be considered that the anti-slide pile projects affect soil property in prevention and cure that soil landslide.