Because top coal is not stable, a roadway with thick top coal often appears to mine pressure problems, such as bolt failure, cable breakage, and roof caving. In particular, these problems are more serious in rockburst mines. Based on a cable breakage case of No. 3 roadway in Xingcun coal mine, the paper analyzed the stress and elastic energy evolution law of surrounding rock and stress state of cable in the 3# roadway by means of the numerical simulation method. Thus, the cable breakage mechanism of the roadway with thick top coal in rockburst mine was revealed. Then, because surrounding rock grouting can reduce the stress concentration of surrounding rock and cable, surrounding rock grouting technology was proposed as control technology of cable breakage. Finally, parameters of surrounding rock grouting were designed and applied in the No. 3 roadway. The field results showed that surrounding rock grouting technology can be one of the solutions for cable breakage of roadway with thick top coal in rockburst mine. The research results of this paper can provide certain theoretical and practical value for mine pressure control of roadway.

中文翻译：

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某岩爆矿厚顶煤巷道断缆机理及控制

由于顶煤不稳定，顶煤较厚的巷道常出现锚杆断裂、电缆断裂、顶板崩落等采压问题。尤其是这些问题在岩爆矿山中更为严重。以兴村煤矿3号巷道断缆为例，采用数值模拟方法，分析了3#巷道围岩应力、弹性能演化规律及索道应力状态。从而揭示了岩爆矿厚顶煤巷道的断缆机理。然后，由于围岩注浆可以减少围岩和电缆的应力集中，因此提出了围岩注浆技术作为电缆断裂的控制技术。最后，对围岩注浆参数进行了设计和应用。3车道。现场试验结果表明，围岩注浆技术可以成为岩爆矿井顶煤厚巷道断缆的解决方案之一。本文的研究成果可为巷道矿压控制提供一定的理论和实用价值。