Experimental Study On Impact Failure Of Coalrock Combination

With the rapidly development of economy and the main position of industrial industry in economy,the energy resources and consumption have increased gradually.When the mining of ground mineral resources is mined up,the depth of mining resources in many countries are also increased which is called deep mining.However,with the deepening of mining or deep mining process,there are some existing rock mechanics theory that can not be explained exactly on the deep complex rock performance.When the depth of mining is increasing,many complex geography and natural geological problems are also accompanied by the occurrence of coal mine safety accidents,so the safety of people in the roadway has been greatly affected.The volatility of the dynamic disturbance of the coal-rock mass is one of the more severe disasters in the underground engineering.In view of the dynamic mechanical characteristics of coal and rock,this paper makes a slight improvement on the SHPB experimental device.Two stress slices are placed on the rod and the transmission bar,and the stress wave of the coal and rock mass is better obtained.It is found that the one-dimensional stress theory is not applicable to the calculation of wave shape of coal and rock mass.Therefore,this paper presents a hierarchical calculation of the waveform of coal and rock mass.The dynamic characteristics of layered rock mass under dynamic disturbance are analyzed by using rock mechanics and rock impact dynamics.The damage process of the layered rock mass under impact loading is obtained by analyzing the data and analyzing the data and analyzing the damaged specimen at the same time.The damage process of the layered rock specimen under the impact load is obtained by analyzing the data under the SHPB test system.The stress-strain curve is obtained by using the one-dimensional stress theory.Through the analysis of the experimental data,the fracture characteristics and data are analyzed by experimental analysis.The results of the stress-strain curve is obtained by the SHPB experimental system.The failurecharacteristics of the rock assemblage specimen under uniaxial impact are analyzed by Ansys software,and the simulation results are combined with the results of the experimental analysis.Performance analysis and analysis of the kinetics of coal and rock failure mechanism.