灌溉诱发型黄土滑坡离心模型试验研究.pdfVIP

DOI 10.11779/CJGE2016S2028 1 2 3 4 慕焕东 ，宋登艳 ，张茂省 ，邓亚虹 13 33.38 mm 320 kPa 157.08 kPa TU43 A 2016)S2017206 (1989 )E-mail: mhdyhx@ Centrifuge modelling tests on loess landslides induced by irrigation 1 2 3 4 MU Huan-dong , SONG Deng-yan , ZHANG Mao-sheng , DENG Ya-hong (1. Institute of Geotechnical Engineering, Xian University of Technology, Xian 710048; 2. China JK Institute of Engineering Investigation and Design, Xian 710043, China; 3. Xian Center of China Geological Survey, Xian 710054, China; 4. Department of Geology Engineering, Changan University, Xian 710054, China) Abstract: The landslide is a common geological disaster, and the loess landslide instability induced by irrigation is one of the common geological disasters. Irrigation function changes the balance of ground water and reduces the resistance strength of soil mass, resulting in the occurrence of loess landslides. For the loess landslide No.13 of Jiaojiayatou, centrifugal model tests on landslide instability mechanism under irrigation effect are carried out. The deformation characteristics, stress levels and failure modes are revealed. The preporation of centrifugal model considers the influences caused by particle size effect and size effect. The results show: (1) With the increase of loading time and centrifugal acceleration, the settlement, earth pressure, pore water pressure of model slope all gr