p.o.box 138 northeastern university shenyang 110819 china;
p.o.box 138 northeastern university shenyang 110819 china;
p.o.box 138 northeastern university shenyang 110819 china;
p.o.box 138 northeastern university shenyang 110819 china;
p.o.box 138 northeastern university shenyang 110819 china;
jointed rock masses; shape metrix3D; monte-carlo stochastic simulation method; PFC2D;