抚顺市区地裂缝特征及形成机理分析

Characteristic and mechanism analysis of geofracture in Fushun City

文章运用遥感、地质、物探、化探、测量、钻探等勘查方法,对抚顺市区地裂缝特征和形成机制进行了系统研究。研究成果表明,抚顺煤田采空区物质亏损引起原始地应力场失衡,原始应力场失衡引发侧向拉伸引力,侧向拉伸引力作用造成断层发生局部活化效应,导致岩石地质体结构发生变化继而引发地裂缝。指出地裂缝是由地质环境条件作为主控因素、采煤工程活动作为诱发因素形成的。研究成果为深刻认识抚顺市区地裂缝成灾机理,预测抚顺市区地裂缝的发展趋势,提供了可资借鉴的理论基础及决策依据。

This paper researches geo-fracture characteristics and formation mechanism of Fushun through RS, geology, geophysical survey, chemical prospecting, survey and drilling exploration and others. The research results indicate that the material loss of Fushun coal mining goaf causes the initial stress field to the unbalanced, which brings up the lateral stretch attraction. This results in partial activation effect of fault and the change of rock geologic structure, then the change leads to the geo-fracture. Also it points out the geology environmental condition is a master factor to geo-fracture formation, and the coal-mining is inducing factor. The results provide basic theory and policy-making rules to understanding the geo-fracture mechanism and forecasting the development in Fushun .