兖州矿区某矿矿震活动规律研究
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摘要
根据兖州矿区某矿2004年11月～2009年3月监测矿震台网记录资料,研究了矿震震源定位精度的方法、震源空间分布与构造、较大矿震与原地应力、矿震与开采的关系。认为利用3分向矿震记录,并采用偏振分析和波形相关分析的方法可以提高震源定位精度;矿震发生与开采速度成正相关,在高发期与顶板周期来压呈相应同步关系,并且与开采进程不稳定程度密切相关的矿震导致顶板垮塌,形成强烈风暴摧毁了封堵墙。研究结果表明,3分向地震记录和波形分析在灾害性质诊断方面具有重要作用,为科学布置工作面,处置构造和高应力区,控制合理开采进度和防治矿震灾害提供了重要依据,是探索矿震预测的一条重要途径。
By using the observation data of mining earthquakes occurred from November 2004 to March 2009 in a coal mine of Yanzhou,Shandong province recorded by the seismic network,the sources of mining earthquakes are located and the following questions are studied:methods of improving the accuracy of mining earthquake source location;relationship between distribution of sources of mining shock and the tectonic background;relationship between large mining earthquakes and the in-situ ground stress;relationship between mining earthquakes and the process of mining;relationship between the mining shock and the disaster event that envelop wall is destroyed;the law of seismicity of mining earthquakes series.The primary results are obtained as follows:by using the methods of polarization analysis and wave form correlation analysis,the source location accuracy can be improved under the condition of sparse networks.The results show that it is the mining shock that made the top tray near the residual column of coal rake collapse and then formed strong blast that destroyed the envelope wall.It is also shown that the three component seismometer and wave form analysis have important effect in diagnosing the properties of mining disasters.
By using the observation data of mining earthquakes occurred from November 2004 to March 2009 in a coal mine of Yanzhou,Shandong province recorded by the seismic network,the sources of mining earthquakes are located and the following questions are studied:methods of improving the accuracy of mining earthquake source location;relationship between distribution of sources of mining shock and the tectonic background;relationship between large mining earthquakes and the in-situ ground stress;relationship between mining earthquakes and the process of mining;relationship between the mining shock and the disaster event that envelop wall is destroyed;the law of seismicity of mining earthquakes series.The primary results are obtained as follows:by using the methods of polarization analysis and wave form correlation analysis,the source location accuracy can be improved under the condition of sparse networks.The results show that it is the mining shock that made the top tray near the residual column of coal rake collapse and then formed strong blast that destroyed the envelope wall.It is also shown that the three component seismometer and wave form analysis have important effect in diagnosing the properties of mining disasters.
引文
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[2]HORNER R B,HASEGAWA H S.The seismotectonics of the southern Saskatchewan[J].Canadian Journal of Analytical Sciences,1978,(15):1 341–1 355.
[3]GEIGER L.Probability method for the determination of earthquake epicenters from the arrival time only[R].Washington:Bulletin of Saint Louis University,1912.
[4]陈运泰,顾浩鼎.震源理论[R].北京.国家地震局地球物理研究所,中国科学技术大学研究生院,1990.(CHEN Yuntai,GU Haoding.Theory of seismic source[R].Beijing.Institute of Geophysics,China Earthquake Administration,Graduate University of the Chinese Academy of Sciences,1990.(in Chinese))
[5]付淑芳,刘宝诚.地震学教程[M].北京:地震出版社,1991:1–594.(FU Shufang,LIU Baocheng.Seismology[M].Beijing:Earthquake Press,1991:1–594.(in Chinese))
[6]JAEGER J C,COOK N G W,ZIMMERMAN R W.Fundamentals of rock mechanics[M].Third edition.London:Chapman and Hall,1979.
[7]COOK N G W.A study of failure in the rock surrounding underground excavations[D].South Africa:University of the Witwatersrand,1962.
[8]和雪松,李世愚,潘科,等.矿山地震与瓦斯突出的相关性及其在震源物理研究中的意义[J].地震学报,2007,29(3):314–327.(HE Xuesong,LI Shiyu,PAN Ke,et al.Mining seismicity,gas outburst and the significance of their relationship in the study of physics of earthquake source[J].Acta Seismologica Sinica,2007,29(3):314–327.(in Chinese))
[9]BUHOYINO G.1985.矿山压力与冲击地压[M].李玉生译.北京:煤炭工业出版社,1981:1–123.(BUHOYINO G.Mining pressure and coal outburst[M].Translated by LI Yusheng.Beijing:Coal Industry Press,1981:1–123.(in Chinese)
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