彬长矿区采煤工作面冲击地压发生机理及防治技术

发布时间：2018-06-17 06:10

本文选题：冲击地压 + 工作面　；参考：《西安科技大学》2015年硕士论文

【摘要】：开展彬长矿区冲击地压发生机理及防治技术研究具有重要的工程应用价值。本文以彬长矿区801102采煤工作面为依托,采用理论分析、数值模拟和现场监测相结合的手段对采煤工作面冲击地压的发生机理、危险性评价和防治技术进行研究。主要结论是:(1)研究了彬长矿区801102工作面冲击地压发生机理,分析了801102工作面冲击地压的规律和类型。结果表明:煤层高水平应力和生产技术因素是801102工作面发生冲击地压的主要影响因素,冲击地压的类型为压力型冲击地压。(2)完成了801102工作面冲击地压危险性评价和危险区域划分。采用综合指数法研究各采矿地质因素对801102工作面冲击地压的影响权重,得到该工作面的危险指数为0.78,危险状态为强冲击危险状态;采用FLAC3D数值模拟软件对801102工作面采场应力进行模拟,研究得出煤柱、巷道顶底板和超前工作面80m范围为采煤工作面冲击危险区域。(3)阐述了微震法预测冲击地压理论,完成了801102工作面微震数据预测分析。研究得出801102工作面微震分布具有区域性,主要分布于采掘活动影响区域和顶底板45m范围以内;大能量微震事件发生前一段时间内微震活动比较活跃,为工作面及时采取治理措施提供依据。(4)提出801102工作面危险区域治理措施,确定钻孔卸压和煤层注水参数,现场监测表明,治理措施的减冲解危效果明显,为安全生产提供了保障。
[Abstract]:It has important engineering application value to study the mechanism and prevention technology of rock burst in Binchang mining area. In this paper, based on the 801102 coal mining face in Binchang mining area, the mechanism, risk assessment and prevention technology of rock burst in mining face are studied by means of theoretical analysis, numerical simulation and field monitoring. The main conclusions are as follows: (1) the mechanism of rock burst in 801102 face of Binchang mining area is studied, and the law and type of rock burst in 801102 face are analyzed. The results show that the high level stress of coal seam and the technical factors of production are the main influencing factors of the impact ground pressure in 801102 face. The type of percussive ground pressure is pressure-type percussive ground pressure. The comprehensive index method is used to study the influence weight of mining geological factors on the impact ground pressure of 801102 working face. The dangerous index of the working face is 0.78 and the dangerous state is strong impact dangerous state. By using FLAC3D numerical simulation software, the stress of 801102 face stope is simulated. It is concluded that the coal pillar, the roof and floor of roadway and the leading working face are the perilous area of coal mining face impact within 80 m.) the theory of predicting impact ground pressure by microseismic method is expounded. The prediction and analysis of microseismic data in 801102 working face have been completed. The results show that the distribution of microearthquakes in 801102 working face is regional, mainly within the area affected by mining activities and within 45 m of roof and floor, and the microseismic activities are active in the period before the large energy microseismic events. This paper puts forward the measures of controlling dangerous area in 801102 face, and determines the parameters of borehole pressure relief and coal seam water injection. The field monitoring shows that the effect of the treatment measures on reducing erosion and resolving danger is obvious. It provides guarantee for production safety.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD324

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