钟家山煤矿区采煤沉陷发育特征及发展趋势分析

Analysis of Zhongjiashan Coalmine Area Coal Mining Subsidence Development Characteristics and Trend in Development

采煤沉陷属于渐进式的地质灾害,具有发生比较缓慢、历时长、不容易察觉、危害性大等特点。钟家山煤矿区采煤沉陷灾害始发于20世纪60年代初期,于20世纪80年代中后期最盛,20世纪90年代后期少有发生。区内采煤沉陷表现形式以裂缝、塌陷坑为主,主要发育于采空区、巷道及老窑分布区域。目前采煤引起的地表变形已基本稳定,但局部区域发生地面塌陷的可能性高,仍需加强防范。

The coal mining subsidence is a kind of progressive geological hazard, with characteristics of relatively slow arising, long duration, not easy to detect and great harmfulness. Coal mining subsidence hazard in the Zhongjiashan coalmine area originated in early 1960s, prevailing in middle to later 1980s, to later 1990s it’s rare. Representations of subsidence in the area have mainly fissures and sinkholes, developed above worked out area, roadways and old mine distribution areas. Coal mining caused surface deformations are basically steady at present, but in local areas still have possibility of occurrence, need to strengthen prevention.