顶板垮断作用下巷道支护体系抗冲击能力研究
Impact resistance research of roadway support system under roof collapse
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摘要: 为研究煤层开采过程中上覆坚硬顶板岩层垮断诱发巷道支护体系冲击失稳的问题，指导矿井冲击地压灾害防控，以宽沟煤矿I010203工作面为背景，采用Abaqus数值分析软件，对动静荷载组合作用下坚硬顶板巷道支护体系进行了精细化数值模拟，分析了动载的传播过程以及巷道围岩在动静载组合作用下动力响应特征，在对巷道支护体系抗冲击能力进行了验算的基础上评估了防冲能力。结果表明：目前的支护体系可有效抵抗的历次大能量事件产生的冲击荷载。Abstract: To investigate the impact instability of the roadway support system caused by the collapse of the overlying hard roof strata during the coal mining process, and to guide the prevention and control of mine rock burst disasters, taking I010203 working face of Kuangou Coal Mine as the background, Abaqus numerical analysis software was used and a refined model was established to simulate and analyze the support system of the hard roof roadway under the combined action of dynamic and static loads, the propagation process of dynamic loads, as well as the dynamic response characteristics of roadway surrounding rock under the combined action of dynamic and static loads, are also analyzed. The anti-impact capacity was evaluated on the basis of checking the anti-impact capacity of the roadway support system. The results show that the current support system can effectively resist the impact loads generated by previous large-energy events.
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Keywords:
- rock burst /
- roof collapse /
- roadway support /
- dynamic response /
- shock disturbance
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