抚顺煤田矿震现状及其城市地质环境效应初探

抚顺煤田矿震的平均发震频度达4000次／年，强度急剧增大，已发生ML＝3．7级矿震，研究预测表明最大震级可达4．2级，矿震是由煤田开采引起的，是矿山开采伴生的动力现象，矿震分为断层活动型，顶板活动型和工作面冲击型三种。矿震不会造成地面灾害，但是，矿震与其他潜在地质灾害相互作用具有不溶忽视的危害性。讨论矿震与城市防震，滑坡，区域地质构造活动之间的相互作用。

Present mining tremors in Fushun coal bed and preliminary study on behavior of urban geologic environment

At present the average frequency of mining tremors amounts to 4,000 times per year and ML=3.7 in vibration strength suggest a growing mining tremors energy.The mining tremors are caused by exploiting coal bed and usually exists as a concurrent dynamic happening in mine exploitation.The mining tremors are classified into three types, that is, fault effect, crest-board stress and site impact. However, in the interaction between mining tremors and other potential geologic disasters, there exists a very sevious hazard. This paper accordingly dealts with the interaction among mining tremors, slide, local geological formation effects.