KJ768微震监测系统在高瓦斯矿井强矿压灾害预警中的应用
Application of KJ768 Micro-seismic Monitoring System in Early Warning of Strong Mine Pressure Disaster in High Gassy Mines
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摘要: 针对晋煤集团某矿埋深大、高瓦斯和硬顶板煤层开采过程中强矿压灾害,利用KJ768微震监测系统探究高瓦斯矿井强矿压预警的可行性。研究表明:KJ768微震监测系统能够在工作面走向和煤岩层垂向上实现顶板局部破裂的精确定位;通过分析微震频次与工作面推进速度的关系可得出该系统对影响覆岩结构稳定因素变化的敏感性较好;利用每日最大微震事件能量值Emax、每日微震事件总能量∑E24和能量异常系数K划定了强矿压预警阀值,并通过现场强矿压显现的校验,表明KJ768微震监测系统能够有效地对现场强矿压现象进行预测。Abstract: In view of the disasters of strong rock pressure in the process of deep mining, high gas and hard roof coal seam in a mine of Jincheng Coal Group, the feasibility of early warning of strong rock pressure is explored by using KJ768 micro-seismic monitoring system. Research shows: KJ768 micro-seismic monitoring system can accurately locate the local roof rupture in the strike of working face and the vertical direction of coal seam. By analyzing the relationship between micro-seismic frequency and the advancing speed of working face, it can be concluded that the system is sensitive to the change of factors affecting the stability of overburden structure. The early warning threshold of strong rock pressure is delineated by using Emax, total energy∑E24 and energy anomaly K of daily maximum micro-seismic events. The verification of strong rock pressure shows that KJ768 micro-seismic monitoring system can effectively predict the phenomena of strong rock pressure in the field.
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[1] 蒋军军.煤岩失稳破坏声发射—微震特征及在冲击地压预测中应用[D].北京:煤炭科学研究总院,2016. [2] 鲁杰,张磊.坚硬覆岩条件下矿震诱发冲击地压机制与防治技术[J].煤矿安全,2018,49(8):165-168. [3] 欧阳振华,孔令海,齐庆新,等.自震式微震监测技术及其在浅埋煤层动载矿压预测中的应用[J].煤炭学报,2018,43(S1):44-51. [4] 齐庆新,李宏艳,邓志刚,等.我国冲击地压理论、技术与标准体系研究[J].煤矿开采,2017,22(1):1-5. [5] 季成,孔令海,高凯.微震监测技术在煤矿上行开采中的应用[J].煤矿安全,2015,46(9):134-136. [6] 邓志刚,齐庆新,赵善坤,等.自震式微震监测技术在煤矿动力灾害预警中的应用[J].煤炭科学技术,2016, 44(7):92-96. [7] 孔令海,李峰,欧阳振华,等.采动覆岩裂隙分布特征的微震监测研究[J].煤炭科学技技,2016,44(1):109. [8] 蒋金泉,张培鹏,秦广鹏,等.一侧采空高位硬厚关键层破断规律与微震能量分布[J].采矿与安全工程学报,2015,32(4):523-529. [9] 姜耀东,王涛,陈涛,等.“两硬”条件正断层影响下的冲击地压发生规律研究[J].岩石力学与工程学报,2013, 32(S2):3712-3718. [10] 窦林名,贺虎.煤矿覆岩空间结构OX-F-T演化规律研究[J].岩石力学与工程学报,2012,31(3):453. [11] 姜福兴,XUN Luo,杨淑华.采场覆岩空间破裂与采动应力场的微震探测研究[J].岩土工程学报,2003(1):23-25.
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