岩土力学2018，Vol.39Issue(3)：1009-1019,1070,12.DOI:10.16285/j.rsm.2017.0926
平推式滑坡运动距离计算模型
Method of sliding distance calculation for translational landslides
摘要
Abstract
Translational landslides are widely spread in red layers area in Sichuan Basin.This type of landslide develops in sub-horizontal bedrock composed of sandstone and mudstone,normally with the dip angle of 3 to 5 degrees,10 degrees at most.Based on geo-mechanical model and sliding process analysis,with the application of the principle of energy conservation,we derived the theoretical sliding distance calculation formula of translational landslide.Three groups of physical simulation tests were established.Group test Ⅰ simulated the sliding distance under the water pressure generated under different conditions of widths and different water heads.Then the theoretical formula was tested by comparing the calculated results and group Ⅰ physical simulation test results.By comparison,the overall distribution shape of uplift pressure under the bottom of sliding body was close to rectangle with very few groundwater penetration points along the shear outlet.To verify the theoretical formula,group tests Ⅱ and Ⅲ were established thereafter.Each group of tests fixed the width and water head respectively.Meanwhile the shear outlet of physical model was set to two types totally blocked and totally seeping water.The results of three groups of physical simulation tests verified the reliability and applicability of theoretical formula.Applying the theoretical formula to Shizishan landslide to calculate the sliding distance,and the calculation results showed the good applicability of the method.The research has some guidance and practical value to prevention and mitigation of translational landslides.关键词
平推式滑坡/运动距离/计算模型/物理模拟/扬压力分布特征Key words
translational landslide/sliding distance/calculation model/physical simulation/distribution shape of uplift pressure分类
建筑与水利引用本文复制引用
唐然,许强,吴斌,范宣梅..平推式滑坡运动距离计算模型[J].岩土力学,2018,39(3):1009-1019,1070,12.基金项目
国家创新研究群体科学基金(No.41521002) （No.41521002）
国家自然科学基金重点项目(No.41630640).This work was supported by the Science Fund for Creative Research Groups of the National Natural Science Foundation of China (41521002) and the Key Program of National Natural Science Foundation of China (41630640). （No.41630640）
