老采空区诱发地裂缝成因及其影响分析  

Analysis on the Causes and the Impact of Ground Fissures Induced Old Goaf

作　　者：王明立[1] 

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013

出　　处：《矿山测量》2014年第4期63-66,6,共4页Mine Surveying

基　　金：国家科技重大专项项目(2011zx05064)资助

摘　　要：地裂缝是一种常见的地质灾害现象,对工农业设施产生较大的危害。文中利用地表移动计算方法针对某煤矿老采空区诱发变电站场地地裂缝的形成原因、发展趋势进行分析。研究表明:在煤矿开采影响下,老采空区的存在是诱发拟建场区地裂缝的主要原因,地裂缝主要发生在水平拉伸变形大于6.0 mm/m的区域。随着煤矿开采对本区域影响的结束,拟建区地层不会产生新的地裂缝,采取必要的技术处理措施后,地裂缝灾害不会对拟建建(构)筑物安全产生较大影响,拟建场址可继续作为变电站场址使用。Ground fissures are a common geological disasters phenomenon and produce greater harm for the industrial and agricultural facilities. In the paper,the author analyzed the causes and the development trends of the ground cracks induced old goaf using the surface movement calculation method in substation site in a coal mine. Research showed that the old goaf was the main reason for the ground fissures of the proposed area under the impact of coal mining. Ground fissures occurred mainly in the area that horizontal tensile deformation was greater than6. 0mm /m. Proposed district formation would not produce a new fissure with the end of the influence of coal mining in the region.Ground fissures would not produce significant impact on the safety of the proposed buildings after taking the necessary treatment measures. The proposed site could continue using as the substation site.

关 键 词：开采沉陷 地裂缝 老采空区 地基稳定性 

分 类 号：TD993[矿业工程—选矿]