Study on high and steep slope stability of surface mine based on RFPA-SRM  

作　　者：WANG Dong CAO Lan-zhu PIAO Chun-de XUE Ying-dong WANG Meng 

机构地区：[1]College of Resource and Environment Engineering, Liaoning Technical University, Fuxin 123000, China [2]School of Mineral Resources and Geoscience, China University of Mining ＆ Technology, Xuzhou 221008, China [3]Western Open-pit Mine, Pingzhuang Energy Corporation, Chifeng 024076, China

出　　处：《Journal of Coal Science & Engineering(China)》2011年第2期119-123,共5页煤炭学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China （50375026）; the Project of Liaoning Province Department of Education （20060387） Liaoning Province, Guideline Plan Project on Safety in Production and Development of Technology （[2009] No. 88）

摘　　要：The instability and failure mechanism of high and steep slopes in surface mines, and the basis for some reasonable landslide prevention measures were provided using the RFPA-SRM. Based on the actual progress of the Pingzhuang Western Surface Mine and based on strength reduction method, the dynamic instability processes of the top high and steep slope was simulated. Also, the landslide mode was determined, the characteristics of the displacement distribution, the deformation, failure, and the stress distribution in the slope were demonstrated, and the stability was calculated. Conclusions can be drawn as follows： the landslide or failure of high and steep slopes on a surface mine is a gradual process, in which the slope undergoes the generation, expansion, and connection of the fractures and the displacement increases until landslide occurs; a small portion of the upper rocks fail due to the tension and the lower rocks fail due to the shear; the potential sliding surface is combined and the essential cause of the landslide is the shear stress concentration.

关 键 词：strength reduction method high and steep slope slope stability landslide mechanism RFPA-SRM 

分 类 号：TU457[建筑科学—岩土工程] TU452[建筑科学—土工工程]