深厚极松散煤层沿空巷道变形控制技术研究  

Research on the Deformation Control Mechanism of the Roadway Along Goaf in Extremely Loose and Thick Coal Seam

作　　者：经来旺 张开放[2] 经纬 张浩[3] JING Laiwang;ZHANG Kaifang;JING Wei;ZHANG Hao(School of Mechanical and Photoelectric Physics, Anhui University of Science and Technology, Huainan Anhui 232001, China;School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan Anhui 232001, China;Luling Coal Mine of Huaibei Mining Co., Ltd., Huaibei Anhui 234113, China)

机构地区：[1]安徽理工大学力学与光电物理学院,安徽淮南232001 [2]安徽理工大学土木建筑学院,安徽淮南232001 [3]淮北矿业股份有限公司芦岭煤矿,安徽淮北235000

出　　处：《安徽理工大学学报（自然科学版）》2022年第1期39-43,共5页Journal of Anhui University of Science and Technology:Natural Science

基　　金：国家自然科学基金资助项目(519040012);深部煤矿采动响应与灾害防控国家重点实验室开放基金(SKLMRDPC19KF02);安徽省博士后研究人员科研活动经费资助项目(2018B268);安徽省高等学校自然科学研究重点项目(KJ2019A0099)。

摘　　要：为研究极松散特厚煤层沿空巷道变形控制技术,以淮北矿业股份有限公司芦岭煤矿8煤层沿空巷道为背景,理论分析“平顶棚+锚梁+超前注+网布”支护方案的合理性,再通过ABAQUS仿真计算,模拟分析该支护方案对围岩蠕变变形的控制效果。经与现场实际监测数据对比,数值模拟结果和现场监测结果基本吻合。巷道在支护后大约第40d进入稳定阶段;经过180d,顶板蠕变下沉量仅为0.0101m,左帮蠕变变形量为0.0795m,底臌蠕变变形量为0.3396m,右帮蠕变变形量为0.1244m。达到预期的支护效果,满足矿井安全运营的要求,充分论证了“平顶棚+锚梁+超前注+网布”支护方案的科学性与合理性。In order to study the deformation control technology of the roadway along the goaf in extremely loose and thick coal seams,the rationality of the"flat roof+anchor beam+advanced injection+mesh cloth"support scheme was theoretically analyzed in the background of the roadway along the goaf in the 8th coal seam of Luling Coal Mine of Huaibei Mining Co.,Ltd.,and then through the ABAQUS simulation calculation,the control effect of the support scheme on the creep deformation of the surrounding rock was simulated and analyzed.Compared with the actual monitoring data on site,the numerical simulation results were basically consistent with the on-site monitoring results.The roadway entered into the stable stage in about 40 days after the support and 180 days later,the creep subsidence of the roof was only 0.0101m,with the left side creep deformation of 0.0795m,the bottom heave creep deformation of 0.3396m and the right side creep deformation of 0.1244m reaching the expected support effect and meeting the requirements of safe operation of the mine,which fully demonstrates the scientificity and rationality of the support scheme.

关 键 词：沿空巷道 变形控制 仿真计算 蠕变 

分 类 号：TD353[矿业工程—矿井建设]