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本文根据辽源矿务局西安煤矿矿震监测资料研究,初步认为:矿震具有频度高、强度低、烈度大、震源集中和周期性活动的特点。矿震的震相与构造地震有明显差异,可划分冲击、冒落两种类型;在空间上集中分布采场附近地质构造复杂部位,尤其煤往体周围;发震较高时间段是每年3—4月、10—12月份,每月下旬;强矿震与本区构造地震活动、采场密集分布及采深增加有密切关系;矿震的成因是区域应力场和矿区局部应力场共同作用结果,而以采矿活动为主导因素。
According to the research of mine monitoring data of Xi’an Coal Mine of Liaoyuan Mining Bureau, this paper preliminarily considers that the mine shock has the characteristics of high frequency, low intensity, large intensity, concentrated focal point and periodic activities. The seismic phases of earthquakes are obviously different from that of tectonic earthquakes and can be divided into two types: impact and fall. Concentrated distribution of complex geological structures around the stope, especially around coal bodies, - April, October-December and late of each month. Strong earthquakes are closely related to the tectonic activities in this area, the intensive distribution of stope and the increase of mining depth. The cause of mine shock is the interaction between regional stress field and local stress field in mining area As a result, mining activities are the dominant factor.