中文摘要：

针对地震、爆破等动力荷载作用下裂隙岩体的动力学特性问题,采用水泥浆制作试样,模拟具有不同数量平行贯通裂隙的岩体,利用Hopkinson压杆对试样施加应变率为100,140,170的动力荷载,得出试样在高应变率下的动态应力-应变曲线.对应力-应变曲线的分析表明：裂隙岩体具有应变率敏感性;破坏岩体的最终变形随着裂隙率降低而减小.

英文摘要：

In view of the dynamic characteristics of fractured rock mass under dynamic loads of earthquake, blasting, dynamic digging, and so on, specimens are made by cement grout to simulate rock mass with different quantities of parallel cross fractures. Then by using the Hopkinson pressure bar, the specimens are loaded at the strain rates of 100, 140 and 170 respectively, and the dynamic strain-stress curve of the specimens was obtained at high strain rate. The analysis of the strain-stress curve shows that fractured rock mass is sensitive to strain rate, and the final deformation of destructive rock mass will decrease with the lowering of fracture rate.