基于地音监测技术的多类型冲击地压前兆特征研究  被引量:7

Study on the precursor characteristics of rockbursts based on acoustic emission monitoring technology

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作  者:陆闯 王元杰 陈法兵[1,2,3] 李岩 夏永学[1,2,3] 刘宁 LU Chuang;WANG Yuanjie;CHEN Fabing;LI Yan;XIA Yongxue;LIU Ning(CCTEG Coal Mining Research Institute,Beijing 100013,China;Coal Mining and Designing Department,Tiandi Science&Technology Co.,Ltd.,Beijing 100013,China;Coal Mining Branch,China Coal Research Institute,Beijing 100013,China;School of Mines,China University of Mining and Technology,Xuzhou 221116,China)

机构地区:[1]中煤科工开采研究院有限公司,北京100013 [2]天地科技股份有限公司开采设计事业部,北京100013 [3]煤炭科学研究总院开采研究分院,北京100013 [4]中国矿业大学矿业工程学院,江苏徐州221116

出  处:《采矿与岩层控制工程学报》2023年第1期85-93,共9页Journal of Mining and Strata Control Engineering

基  金:国家“科技助力经济2020”重点专项资助项目(SQ2020YFF0426364);天地科技股份有限公司科技创新创业资金专项资助项目(2019-TD-2-CXY004,2019-TD-2-CXY006)。

摘  要:针对煤矿多类型冲击地压地音监测预警问题,基于冲击地压启动理论和现场地音监测数据,分析了不同类型冲击地压的失稳启动机制,得出冲击地压发生前煤岩体应力变化主要分为持续加载型、动静加载型和循环加卸载型3种;结合实验室煤岩体全应力-应变曲线与声发射监测数据,对煤岩体试件破坏前发生3种类型应力变化的地音前兆特征进行了细化研究,并通过现场实测数据,对3种不同类型冲击地压失稳破坏前地音活动演化规律进行了分析。结果表明:现场冲击地压发生前地音活动演化规律与实验室煤岩体试件破坏前地音前兆特征具有一致性。因此,基于地音监测技术的多类型冲击地压前兆特征研究可以对相应类型冲击地压灾害的防控实现不同程度的指导作用,为煤矿现场防控冲击地压灾害提供一定的理论支撑。Based on the coal burst initiation theory and field ground sound monitoring data,the destabilization initiation mechanism of different types of coal bursts is analyzed.The stress changes in the coal measures before the occurrence of coal bursts are mainly divided into three types:continuous loading type,dynamic and static loading type,and cyclic loading and unloading type.Combined with the full stress-strain curve of the coal measures and acoustic emission monitoring data in the laboratory,the ground sound precursors of the three types of stress changes before the failure of coal specimens are analyzed.The ground sound activity evolution law before the damage of three different types of coal burst destabilization was analyzed through the field measurement data.The results show that the evolution of ground sound activity before the occurrence of coal bursts in the field is consistent with the ground sound precursor characteristics before the failure of coal specimens in the laboratory.Therefore,the research on the precursor characteristics of multiple types of coal bursts based on the ground sound monitoring technology can achieve different degrees of guidance for the prevention and control of the corresponding types of coal burst disasters.

关 键 词:冲击地压 失稳启动机制 前兆特征 地音监测技术 

分 类 号:TD325[矿业工程—矿井建设]

 

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