开挖浅埋煤层条件下山区地表移动及变形规律预计

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英文篇名：Analysis on Surface Movement and Deformation Laws under Excavation of Shadow Seam in Mountain Areas 作者：任杰 ; 王爱军 ; 焦姗 ; 王晓娅 英文作者：REN Jie;WANG Ai-jun;JIAO Shan;WANG Xiao-ya;Taiyuan University of Technology;Hydrogeology and Environmental Geology Survey Center,China Geological Survey;The Third Geological Exploration Institute,China Metallurgical Geology Bureau; 关键词：浅埋煤层 ; 地表移动 ; 概率积分法 英文关键词：shadow seam;;surface movement;;probability integral method 中文刊名：MTJS 英文刊名：Coal Technology 机构：太原理工大学;中国地质调查局水文地质环境地质调查中心;中国冶金地质总局第三地质勘查院; 出版日期：2019-03-10 出版单位：煤炭技术 年：2019 期：v.38;No.303 基金：服务国家重大战略和国土开发保护地质调查(DD20160335) 语种：中文; 页：MTJS201903022 页数：4 CN：03 ISSN：23-1393/TD 分类号：68-71

摘要

地下煤层开采后,其变形影响经采空区及上覆岩层传至地表形成采煤沉陷区,从而引起地表移动和变形,但是关于山区地表移动计算成果较少,以霍东矿区某煤矿为例,在利用概率积分法计算移动盆地地表变形的基础上,考虑地形因素并通过MATLAB程序计算采煤影响下山区地表下沉和变形规律。通过对比主断面上平地变形和山区变形,可以发现修正后的下沉量曲线不同于平地变形曲线,呈"碗"形;滑移影响参数的选取直接影响山区地表移动变形修正计算模型结果;山区的地形因素对变形影响较大,尤其是在地形起伏较大的地区。
        Ground surface movement and deformation are induced by formed coal mining subsidence area, because of deformation influences goaf and overlying strata spreading to surface after underground coal mining. But there are less calculation results on deformation and movement in mountain areas. So a coal mine with shadow coal seam in Huodong mining area is taking as an example, surface subsidence and deformation regulation are calculated through MATLAB procedures considering terrain factors, based on deformation laws of moving basin calculated by probability integral method. It can be concluded that subsidence curves are different between plain and mountain area, and it′ s a bowel-shaped curve after modifying; the shape of curves are determined by the selection of slip-influenced directly; terrain factors in have great influence on surface deformation, especially in areas with large undulating topography compared with the results between plain and mountain areas.

引文

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