西南交通大学学报2011，Vol.46Issue(6)：966-972,7.DOI:10.3969/j.issn.0258-2724.2011.06.013
滑坡稳定性分析点安全系数法的应用条件
Application Condition of Point Safety Factor Method for Stability Analysis of Landslide
摘要
Abstract
To determine the landslide stage for suitable application of the point safety factor method, calculational results obtained using this method and the rigid-body limit equilibrium method were analyzed and compared, and factors influencing point safety factor were analyzed. The results show that the beginning stage of the plastic flow state of sliding zone is suitable to the use of point safety factor, so the applicable condition of the point safety factor method is the critical state of sliding beginning. At the stage, in a two-dimension condition the whole safety factor based on the point safety factor method shows a good agreement with that based on the rigid-body limit equilibrium method; in a three-dimension condition, the calculated results are accorded with the reserving strength concept, I. E., the safety factor of sliding decreases K times when its shear strength decreases K times.关键词
滑坡/滑动机制/点安全系数/数值计算Key words
landslide/ sliding mechanism/ point safety factor/ numerical computation分类
天文与地球科学引用本文复制引用
杨涛,马惠民,代杰,杨延鑫..滑坡稳定性分析点安全系数法的应用条件[J].西南交通大学学报,2011,46(6):966-972,7.基金项目
国家自然科学基金资助项目(50808149) （50808149）
中央高校基本科研业务费专项基金资助项目(SWJTU09CX007) （SWJTU09CX007）
