地质科技情报2017，Vol.36Issue(2)：244-248,5.DOI:10.19509/j.cnki.dzkq.2017.0232
黄土—红层接触面滑坡稳定性可靠性分析
Reliability Analysis on Loess-Red Mudstone Interface Landslide Stability
摘要
Abstract
The stability of the loess-red mudstone interface landslide which has variability,randomness and unccrtainty is affected by multiple factors.In order to thoroughly analyse the factors,the Monte-Carlo method was combined with the state function of reliability analysis on landslide stabilization established by transmitting coefficient method and was introduced to obtain the reliability analysis results indexed by instability probability Pf and reliability β.In this study,loess-red mudstone interface landslide in TianshuiLongxi landslide belts was taken as example,and both site investigation and laboratory experiment were applied to investigate the basic characteristics of the landslide,the properties of rock and soil and influencing factors.Based on the analysis of landslide formation mechanism,statistical analysis and theory analy sis on sliding soil cohesion(c),internal friction angle(φ) was conducted to get their mean values,standard deviations,variation coefficients and distribution rules with the aid of the VC++ design program,so as to calculate the instability probability Pf and reliabilityβ.The analysis result shows that the stability of the landslide obtained bythis method is consistent with the stability analyzed by traditional analysis methods,but this method improved the accuracy of landslide stability evaluation through multi-perspective and multi-index analysis of landslide stability.关键词
黄土—红层接触面滑坡/稳定性/Monte-Carlo法/可靠性分析Key words
loess-red mudstone interface landslide/stability/Monte-Carlo simulating method/reliability analysis分类
地质学引用本文复制引用
陈龙飞,刘高,田华,林磊..黄土—红层接触面滑坡稳定性可靠性分析[J].地质科技情报,2017,36(2):244-248,5.基金项目
国家重大基础研究发展计划(973计划)项目(2014CB744700) （973计划）
