Application of the strength reduction FEM to diversion tunnel plug stability  

作　　者：Su Kai Wu Hegao 

机构地区：[1]State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China

出　　处：《Engineering Sciences》2010年第4期26-30,共5页中国工程科学（英文版）

基　　金：National Natural Science Foundation of China(No.50809051)

摘　　要：Firstly,the common design principles for diversion tunnel plug are generalized,and two kinds of numerical analysis methods are discussed.Then the strength reduction FEM is introduced in numerical model analysis and the design steps of the plug's length are illustrated.During the progress to determine the plug's length,the equivalent plastic strain on the potential slip surface is assumed as the flag to tell the failure against sliding,and the plug stability is overall estimated from the plastic zone range and connectivity.

关 键 词：diversion tunnel PLUG STABILITY safety factor strength reduction FEM 

分 类 号：TV698.1[水利工程—水利水电工程] TU457[建筑科学—岩土工程]