Influence of resistance characteristics of energy-absorbing components on impact resistance of hydraulic columns

ZHANG Jianzhuo1, WAN Chuanxu1, XIAO Yonghui2, CHEN Ce1, WANG Tao1, GUO Hao1

Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (4) : 217-228.

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (4) : 217-228.
SHOCK AND EXPLOSION

Influence of resistance characteristics of energy-absorbing components on impact resistance of hydraulic columns

  • ZHANG Jianzhuo1,WAN Chuanxu*1,XIAO Yonghui2,CHEN Ce1,WANG Tao1,GUO Hao1
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Abstract

Rock burst in roadway is a kind of dynamic disaster caused by sudden release of energy from high stress coal rock. Supporting equipment is often damaged by overload impact. In order to improve the energy absorption and impact resistance of the roadway hydraulic support, this paper constructs a coupling impact model of the column-energy absorbing component under the action of roof pressure, and reveals the optimal resistance mode of the energy absorbing component under the coupling effect of the energy absorbing component and the column. The maximum fluctuation amplitude of the emulsion pressure of the hydraulic column, the peak stress of the column cylinder and the energy absorption are used as evaluation indexes to analyze the influence of the resistance characteristics of the single energy absorbing component and the combined energy absorbing component on the impact resistance of the column. The results show that the resistance-increasing mode is the optimal resistance mode for the energy-absorbing components of the roadway hydraulic support. Compared with the constant resistance energy-absorbing component installed at the bottom of the column, the energy absorption of the resistance-increasing energy-absorbing component installed at the bottom of the column increases by 9.29 %, and does not increase the peak stress of the cylinder. At the same time, it can reduce the impact force generated by hard impact in the process of large energy impact ; compared with the constant resistance energy absorption components installed at the upper and lower ends of the column, the maximum fluctuation amplitude of the emulsion pressure is reduced by 9.79 %, the peak stress of the inner wall of the cylinder is reduced by 13.83 MPa, and the energy absorption is increased by 5.65 %. The research results provide a theoretical basis for the design of energy absorption components of roadway anti-scour hydraulic support.

Key words

energy absorption anti-impact column / energy absorbing component / resistance characteristics / coupling impact; combined energy absorption

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ZHANG Jianzhuo1, WAN Chuanxu1, XIAO Yonghui2, CHEN Ce1, WANG Tao1, GUO Hao1. Influence of resistance characteristics of energy-absorbing components on impact resistance of hydraulic columns[J]. Journal of Vibration and Shock, 2025, 44(4): 217-228

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