采空区上方斜坡地形塌陷灾害研究——以申家山采空塌陷为例  

Subsidence in a slope terrain above the mined-out area:a case study of the mining subsidence in Shenjia mountain

作　　者：罗川[1] 陈剑文[1] 官在平 

机构地区：[1]中国地质大学(武汉)工程学院,湖北武汉430074 [2]湖北兴发化工集团股份有限公司,湖北宜昌443711

出　　处：《水文地质工程地质》2015年第3期156-160,共5页Hydrogeology & Engineering Geology

基　　金：国家大坝安全工程技术研究中心开放基金(NDSKFJJ1204);中央高校基本科研业务费专项资金资助项目(CUG090104)

摘　　要：以梁家山坡(申家山)磷矿采空塌陷为例,分析了地下采矿所引起的斜坡体塌陷的形成原因,即采空区上覆岩体在重力作用下向坡体下方临空面发生变形、破裂和移动,其发育受地质因素与采矿因素共同作用的影响;并用不同经验式估算得出该区内受地下采空区影响的高程范围,证实申家山是由地下采矿引起的采空塌陷。然后将其与盐池河山崩相对比,对二者在外在表现、形成过程及形成原因方面的不同点展开了讨论,二者虽然同样受采空区的影响,但是由于地质条件的不同,导致最终的破坏型式不同。Mechanism of the mining subsidence in the Shenjia Mountain is analyzed in this paper. The overlying rock mass of the underground mined-out area was deformed,split and moved to the free surface under the bottom of the slope by gravity,and subsidence occured finally. Its development was determined by the combined effects of geological factors and mining factors. Different empirical formulae were used to estimate the elevation range affected by the underground mined-out area in the region. The results show that the Shenjia Mountain mining subsidence was caused by underground mining. Differences in the extenal manifestation,formation process and causes between the mining subsidence in the Liangjiahillside（ Shenjia Mountain） and the Yanchihe Landslide is also discussed. They are affected by mined-out area,but different geological conditions lead to different failure types.

关 键 词：采空区 盐池河山崩 梁家坡采空塌陷 裂隙带 

分 类 号：TD167[矿业工程—矿山地质测量]