深部孤岛构造区冲击地压监测多参量关联性研究

Study on Multi-parameter Correlation of Rock Burst Monitoring in Deep Island Tectonic Area

为合理确定深部复杂地质条件和开采条件区掘进工作面冲击地压监测多参量间的关联性,提升冲击危险监测预警的实时性和准确性,以某矿3314孤岛工作面运输巷掘进工作面为工程背景,将地音、锚索锚固力和钻孔应力作为主要研究对象,结合深部巷道围岩损伤破坏特征,进行了构造区冲击地压监测多参量的敏感性分析。分析结果表明:地音对巷道围岩破坏的“敏感性”最高,其次为锚索锚固力,钻孔应力最低。基于敏感性分析确定了多参量监测的关联性和有效性,在所研究范围内,深部复杂条件掘进工作面冲击地压多参量监测预警应以地音监测为核心,结合锚索锚固力及钻孔应力监测数据进行综合分析,研究结果可为类似条件的冲击地压监测提供理论依据及工程参考。

In order to reasonably determine the correlation between multiple parameters of rock burst monitoring in driving face of deep complex geological conditions and mining conditions, and improve the real-time and accuracy of rock burst monitoring and early warning, the driving face of transport roadway in 3314 isolated working face of a mine was taken as the engineering background, and the ground sound, anchor cable anchorage force and borehole stress were taken as the main research objects. Combined with the damage and failure characteristics of surrounding rock in deep roadway, the sensitivity analysis of multiple parameters of rock burst monitoring in structural area was carried out.The analysis results show that the "sensitivity" of ground sound to roadway surrounding rock damage is the highest, followed by the anchor cable anchorage force, and the drilling stress is the lowest. Based on sensitivity analysis, the relevance and effectiveness of multi-parameter monitoring are determined.Within the scope of the study, the multi-parameter monitoring and early warning of rock burst in deep excavation face under complex conditions should take sound monitoring as the core, and comprehensively analyze the monitoring data of anchor cable anchorage force and borehole stress. The research results can provide theoretical basis and engineering reference for rock burst monitoring under similar conditions.