界沟矿7_(2)11工作面防砂煤岩柱留设研究  

Study on reserved design of anti-sand coal column under 7_(211) working face of Jiegou mine

作　　者：周晓敏 杨本水[1] ZHOU Xiaomin;YANG Benshui(Anhui Jianzhu University,Hefei,230601,China)

机构地区：[1]安徽建筑大学,安徽合肥230601

出　　处：《华北科技学院学报》2023年第4期67-74,共8页Journal of North China Institute of Science and Technology

基　　金：国家自然科学基金(51774007,51274007)。

摘　　要：在详细分析松散层底部“四含”的富水性及岩土物理性质的基础上,以界沟煤矿7_(2)11工作面为地质背景,利用FLAC3D软件建立了7_(2)煤开采的工程地质模型,研究了采动后顶板岩层位移、应力及塑性区变化规律。按数值分析法、规程法和实测类比法确定了留设的防砂安全煤岩柱高度最大为24.6m,结合工程实际情况,工作面可安全生产,研究结果为松散含水层下近煤层安全开采提供了指导和借鉴。Based on the detailed analysis of the water richness and geotechnical physical properties of the “aquifer IV” at the bottom of the loose layer,the engineering geological model of 7_(2) coal mining was established by using FLAC3D software to study the displacement,stress and plastic zone changes of the roof layer after mining,taking the 7_(211) working face of Jiegou Coal Mine as the geological background.According to the numerical analysis method,the procedure method and the measured analogy method,the maximum height of the remaining sand control safety coal rock column is 24.6m,combined with the actual situation of the project,the working face can be safely produced,and the research results provide guidance and reference for the safe mining of near the coal seam under the loose aquifer.

关 键 词：松散层 数值模拟 防砂煤岩柱 垮落带 

分 类 号：TD745[矿业工程—矿井通风与安全]