Determination of critical slip surface of fractured rock slopes based on fracture orientation data  

作　　者：ZHANG Wen CHEN JianPing ZHANG Wu L Yan MA YuFei XIONG Hui 

机构地区：[1]College of Construction Engineering,Jilin University [2]College of Automotive Engineering,Jilin University

出　　处：《Science China(Technological Sciences)》2013年第5期1248-1256,共9页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.40872170,40902077,41072196);Doctoral Program Foundation of Higher Education of China(Grant No.20090061110054);Jilin University's 985 Project(Grant No.450070021107);Graduate Innovation Fund of Jilin University(Grant No.20121073);Basic Research of Jilin University(Grant No.421032184424)

摘　　要：The critical slip surface of a fractured rock slope tends to extend along the fractures.Thus,fracture orientation plays a critical role in determining the critical slip surface.Based on fracture orientation data,this paper examines the critical slip surfaces of fractured rock slopes.Given that the surface of a fractured rock slope extends along the fracture surfaces,or the wedges,with each composed of two arbitrary fractures,the critical slip surface is determined via stochastic dynamics.In addition,a fracture frequency method is proposed as a means of analyzing the critical slip surface.According to this method,the critical slip surface slips in whichever direction has the lowest fracture frequency.Based on the stochastic dynamics method and the fracture frequency method,the critical slip surface of the slope is finally determined,that is,the critical slip surface takes the form of a plane passing the slope toe with a dip of 120° and a dip angle of 45°.

关 键 词：fractured rock slope critical slip surface stochastic dynamics method fracture frequency method 

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