Research on load characteristics of roadway rock burst and anti-impact supporting equipment
In response to the frequent occurrence of rockburst accidents causing structural damage to hydraulic supports and leading to coal mine safety accidents,the load spectrum characteristics under typical rockburst were obtained by analyzing the energy released based on rockburst,and the performance requirements for the anti-impact device of the support were proposed,and the honeycomb ener-gy absorption structure arranged by hexagonal tubes was studied.The finite element model of the anti-impact device and the dynamic model of the overall stress coupling system between the load(rock layer)and the hydraulic support of the anti-impact device were con-structed,and the dynamic response of the support under typical impact load characteristics was analyzed.The results show that the ap-plication of the honeycomb structure anti-impact device can reduce the force of the piston by about 40％,and the force at the joint of the piston and the roof of the hydraulic support is more stable.It can play a great role in anti-impact and pressure reduction,and has impor-tant significance in promoting the prevention and control of rock burst disaster.
rock bursthydraulic supportanti-impact devicefinite element analysis
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