Research on energy-releasing and energy-absorbing support system based on rock burst

In order to effective control rock burst disasters,this paper takes the high strength energy-releasing and energy-absorbing support system as the research direction,selects the excavation activity of the coal mine in the deep well of the high fort in Binchang Mining Area as the test object.This paper analyzes the relationship between stress and strain of surrounding rock,studies the supporting characteristic curve of surrounding rock,and combined with the characteristics of energy propagation of rockburst,puts forward the concept of “working point drift hypothesis” and “drift work” under the condition of impact ground pressure.The five-D working condition design of support system based on installation load,support strength,bolt length,surrounding rock surface displacement and impact work is defined,and the five-D working condition point diagram method of energy-absorbing and punching support is developed,and the reasonable support and nurse condition parameters are determined.The industrial test of the No.203 roadway in Gaojiapu Coal Mine,the strong dynamic phenomenon did not occur during the mining,and the observation results of the mine pressure parameters are consistent with the design,which verifies the feasibility of the design of the energy-absorbing support system for the impact ground pressure control.