Damage parameter identification of joint rock mass in underground opening
WANG Huaning 1, LU Aizhong 2, CAO Zhiyuan 1
1.Key Laboratory of Solid Mechanics of MEO Dep. of Engineering Mechanics Tongji University Shanghai 200092 China 2.Institute of Civil Engineering Shandong University of Science and Technology
Abstract：Based on the theory of displacement back analysis and the theory of geometrical damage, identification of damage parameters in joint rock mass is studied in this paper. The identification reliability of different parameters is discussed respectively according to the different number of crack group contained in the rock mass. Then the parameter combinations with high accuracy are obtained. For the cases in which the initial values have great effect on the accuracy of the result, Monte Carlo method is used to optimize the initial values,and the result shows that identification precision is improved greatly.
王华宁；吕爱钟；曹志远；. 巷道裂隙岩体的损伤参数辨识[J]. 岩土工程学报, 2001, 23(5): 593-597.
WANG Huaning 1, LU Aizhong 2, CAO Zhiyuan 1. Damage parameter identification of joint rock mass in underground opening. Chinese J. Geot. Eng., 2001, 23(5): 593-597.
