Civil Engineering Department;
Beijing Polytechnic University;
Beijing 100022;
P.R.China;
Civil Engineering Department;
Chongqing University;
Chongqing 400044;
P.R.China;
Institute of Engineering Geology;
Chengdu University of Technology;
Chengdu 610059;
P.R.China;
dynamic response; discrete element method; rock mass engineering;