Failure experimental study on energy laws of rock under differential dynamic impact velocities

The dynamic impact experiments and static loading experiments for sandstones were conducted.In dynamic impact experiments,the dissipated energy and the total absorbed energy were calculated during sandstone failure process under the different impact velocity.In the static load experiments,the total absorbed energy of sandstones when failure was calculated.Besides,the failure absorbed energy under dynamic impact and static load was contrasted and analyzed.The experiment results show that,in order to achieve the same damage degree,the sandstone can dissipate more energy under static uni-axial load than that under dynamic impact.