秭归罗圈荒地区微震群事件分析  

ANALYSIS OF MICRO-EARTHQUAKE SWARMS IN LUOQUANHUANG AREA OF ZIGUI COUNTY

作　　者：陈俊华[1] 甘家思[1] 吴海波[1] 张丽芬[1] 丁原文 魏贵春[1] 申学林[1] 

机构地区：[1]中国地震局地震研究所,武汉430071 [2]宜昌市地震局,宜昌443000

出　　处：《大地测量与地球动力学》2009年第6期45-48,共4页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金重点项目(40730317);中国地震局地震研究所所长基金(IS200856078)

摘　　要：基于秭归罗圈荒微震群事件的时空分布、波形特征及震源机制解结果,分析了其成因。这次微震群属于冲击地压型矿震,与煤矿开采及回采工程活动有关,属于偶发的局部应力释放。On the basis of the spatial and temporal distribution, waveform characteristics and results of focal mechanism solution of the micro-earthquake swarms in Luoquanhuang area of Zigui county, the cause of the earth-quakes are analyzed. The event is ore earthquake of rock burst type related to coal mine exploitation and mining activity, the micro-earthquake swarms belong to occasional local stress releasing.

关 键 词：罗圈荒 矿震 采矿活动 震源机制解 应力释放 

分 类 号：P315.63[天文地球—地震学]