多种地质采矿因素复合影响下开采沉陷规律分析  

Analysis of mining subsidence law under the compound influence ofvarious geological and mining factors

作　　者：康新亮 蔡音飞[2] KANG Xinliang;CAI Yinfei(Geology Department,Xishan Coal Electricity Group Co.,Ltd.,Taiyuan 030053,China;College of Mining Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]西山煤电(集团)有限责任公司地质处,山西太原030053 [2]太原理工大学矿业工程学院,山西太原030024

出　　处：《矿业安全与环保》2021年第4期75-80,共6页Mining Safety & Environmental Protection

基　　金：山西省自然科学基金面上项目(201901D111074)。

摘　　要：为了研究山区倾斜煤层重复开采条件下的地表沉陷规律及其影响因素,以镇城底矿南六采区下组煤首采工作面为例,通过设立地表移动观测站,得到观测站所在的28620工作面的地表移动变形主要参数,并分析沉陷规律与机理。观测结果分析表明,在工作面两侧地形条件、老采空区条件类似的情况下,倾向主断面上沉陷曲线形态呈现不对称性分布,其原因主要是两侧微观地形差异、地表覆被差异和老采空区形成时间差异的联合影响造成的,地质、采矿多因素复合影响下的沉陷规律不能简单套用单因素影响下的规律。研究结果可为当地矿山开采和地物保护提供指导,为其他复合因素影响下的开采沉陷研究提供参考。In order to study the surface subsidence law and its influencing factors of inclined coal seam in mountainous area under the condition of repeated mining,taking the first mining face of the lower coal group in south No.6 mining area of Zhenchengdi Mine as an example,the main surface movement and deformation parameters of the 28620 working face where the observation station is located are obtained,and the settlement law and mechanism are analyzed.The analysis of the observation results shows that,as the topography and goaf conditions on both sides of the studying working face are similar,the subsidence curves appear asymmetrical in the dip principle section,the main reason is the combination of micro-topography difference,surface vegetation and formation time difference of goaf.The subsidence law under the compound influence of geological and mining factors cannot be simply applied to the law under the influence of single factor.The results can provide guidance for local mining and protection of ground features,and provide reference for the research of mining subsidence under the influence of other compound factors.

关 键 词：山区 缓倾斜煤层 重复开采 地表沉陷 主断面 地质因素 采矿因素 复合影响 

分 类 号：TD325[矿业工程—矿井建设] TD175