矿山地下采空区对地表塌陷影响范围研究  

Study on Mine Underground Gob Area Impact on Surface Subsidence Range

作　　者：黄继烈[1] 余杰[1] 

机构地区：[1]四川省煤田地质局141队,德阳618000

出　　处：《中国煤炭地质》2018年第1期60-64,共5页Coal Geology of China

摘　　要：为研究四川天全县乐英石膏矿开采对地面塌陷的影响,着重分析了区内岩石的工程地质特征,采用公式法计算了冒落带、导水裂隙高度、采空区距地表安全深度,进而对地表影响范围进行了预测,提出了采空区地面塌陷的成因。结果表明:采空区地面塌陷形成主要原因为采空区房、柱设置不规则,采空区跨度大,矿山开采过程中缺乏相应的顶板管理措施;在开采深度未达到采空区距地表安全深度,是区内地表塌陷的主要因素。确定了采空区地表影响范围。To study the impact on surface subsidence from the Leying gypsmn mine exploitation in the Tianquan County, Sichuan, has focused on the analysis of rock engineering geological features in the area. Through the formula method has computed the heights of ca- ving zone and water conducted zone ; safe mining depth of gob area under the surface ; then has predicted surface impact range ; put tot- ward contributing factors of gob area surface subsidence. The result has shown that the main cause of surface subsidence fomlation is ir- regular setting of room and pillar in gob area, working out area has too large span, during the mining process without corresponding roof management measures. Thus the mining depth non - conformity with the safe mining depth requirement is the main causation of surface subsidence. The study has ascertained the gob area surface impacting range.

关 键 词：松软岩组 导水裂隙带 安全开采深度 石膏矿开采 

分 类 号：P642.2[天文地球—工程地质学] X141[天文地球—地质矿产勘探]