摘要
介绍了用于滑坡稳定性可靠度分析的MonteCarlo模拟法、中心点法、验算点法和统计矩法。在分析三峡库区二里半滑坡工程地质特征的基础上,采用稳定性系数作为状态函数,对滑坡稳定性可靠度进行了分析,结果表明在175m水位+暴雨、水位由175m骤降+暴雨、暴雨+Ⅵ烈度地震等工况下二里半滑坡的稳定性均较差,破坏概率较高,需要进行治理。
Factors that affect the landslide stability have uncertain features, so it is very necessary to process reliability analysis in landslide stability. The methods of landslide stability reliability analysis have been introduced in this paper, including Monte Carlo simulation method, mean point method, checking point method and rosenblueth method. Based on the engineering geological property analysis of Erliban landslide, with the stability factor as performance function, the landslide stability reliability has been computed. The analysis results show that the landslide stability is worse and highly probable to cause failure under some conditions,which include the condition of 175 m water level accompanying rainstorm and the condition of the water level dropping from 175 m to 145 m accompanying rainstorm and the condition of rainstorm accompanying the earthquake of Ⅶ degree. And it needs prevention.
出处
《地质科技情报》
CAS
CSCD
北大核心
2005年第B07期177-179,183,共4页
Geological Science and Technology Information
关键词
滑坡
稳定性
可靠度分析
破坏概率
landslide
stability
reliability analysis
failure probability
