基于统计分析的近距离煤层上行开采可行性判别方法  

Feasibility discrimination method of upward mining in close-distance coal seam based on data statistics

作　　者：袁光明[1] 何团 YUAN Guangming;HE Tuan(Chongqing Vocational Institute of Engineering,Chongqing 402260,China;State Key Laboratory of Coal Resources in Western China,Xi'an University of Science and Technology,Xi'an 710054,China;School of Mining and Geomatics,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]重庆工程职业技术学院,重庆402260 [2]西安科技大学西部煤炭绿色安全开发国家重点实验室,陕西西安710054 [3]河北工程大学矿业与测绘工程学院,河北邯郸056038

出　　处：《采矿与岩层控制工程学报》2021年第3期17-27,共11页Journal of Mining and Strata Control Engineering

基　　金：西部煤炭绿色安全开发国家重点实验室开放基金课题资助项目(SKLCRKF20-04)。

摘　　要：调研了目前近距离煤层上行开采可行性判别的常用方法,在开采地质条件日益复杂、下部煤层采高不断增大的开采背景下,分析了现有评价方法的适用性与局限性。基于丰富的近距离煤层上行开采案例统计,通过理论分析提出了以上部煤层台阶错动量为核心指标判别近距离煤层上行开采的可行性。运用UDEC数值模拟软件,开展大量数值模拟试验,构建以下部煤层开采厚度、煤层间距、层间岩层岩性指数为参量的上部煤层台阶错动量预计公式,得到台阶错动量与单一参数的协同关系。基于此,最终提出基于数据统计分析的近距离煤层上行开采可行性判别方法,该方法可靠性高,适用性强、应用操作简单,具有一定的理论与实用价值。运用基于统计分析的近距离煤层上行开采可行性判别方法指导工程实践,经验证现场应用效果良好。This paper investigates the common methods for assessing the feasibility of upward mining in closedistance coal seam,and analyzes the applicability and limitations of existing evaluation methods under the background of increasingly complex geological conditions and increasing mining height of the lower coal seam.Based on abundant cases statistics of upward mining in close-distance coal seams,it proposes that the upper coal seam step subsidence is the core index to assess the feasibility of upward mining of close-distance coal seams.A large number of numerical simulation tests were carried out using the UDEC code,prediction formula of upper coal seam step subsidence including thickness of the lower coal seam,coal seam spacing,the interlayer lithology index as parameters was constructed.Synergistic relationship between the step subsidence and a single parameter was obtained.Finally,the feasibility discrimination method of upward mining of close-distance coal seam based on massive data statistics is proposed.This method has high reliability,strong applicability and simple operation,which has certain theoretical and practical value.It has been used to guide the engineering practice,and the field application effect is good after verification.

关 键 词：近距离煤层 上行开采 台阶错动量 可行性判别 

分 类 号：TD823[矿业工程—煤矿开采]