采动影响下大断面厚煤顶煤巷支护机理及其优化  

Support Mechanism and Optimization of Large Section Thick Coal Top Coal Roadway under Influence of Mining

作　　者：马晓川 李殿福 杨长德 李其平 刘时麟 Ma Xiaochuan;Li Dianfu;Yang Changde;Li Qiping;Liu Shilin(School of Mining Engineering and Geology,Xinjiang Institute of Technology,Urumqi 830023,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Xuzhou 221116,China;Xinjiang Changji Heze Tengda Mining Co.,Ltd.,Changji 831116,China)

机构地区：[1]新疆工程学院矿业工程与地质学院,乌鲁木齐830023 [2]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221116 [3]新疆昌吉市菏泽腾达矿业有限责任公司,新疆昌吉831116

出　　处：《煤矿机械》2023年第5期121-125,共5页Coal Mine Machinery

基　　金：新疆维吾尔自治区高校科研计划自然科学项目(XJEDU2018Y052);煤炭资源与安全开采国家重点实验室-新疆工程学院联合开放研究基金项目(SKLCRSM-XJIEKF005);新疆工程学院科研基金项目(2020xgy232302)。

摘　　要：为解决菏泽腾达煤矿1503运输顺槽煤层厚度变化大、煤层顶板自稳能力差,巷道断面跨度大,采动影响下易发生围岩变形,顶板、帮部支护难度增加影响掘进施工安全及工效问题,结合工作面地质条件及现场实际情况,通过FLAC3D数值模拟分析方法对采动影响下巷道支承压力变化规律进行研究分析,并采用数值模拟和力学理论计算方法对巷道支护设计方案进行模拟对比分析,确定了巷道支护方案。现场验证结果表明,巷道采用该支护设计方案进行支护后,巷道围岩变形得到有效控制,为类似条件下煤巷支护提供了参考。In order to solve the problems that the thickness of the 1503 transport gateway in Heze Tengda coal mine changes greatly,the self stability of the coal seam roof is poor,the roadway section span is large,the surrounding rock deformation is easy to occur under the influence of mining,and the difficulty of roof and side support increases,which affects the safety and efficiency of tunneling construction,combined with the geological conditions of the working face and the actual situation on site,the change law of the roadway bearing pressure under the influence of mining was studied and analyzed through FLAC3D numerical simulation analysis method.The numerical simulation and mechanical theory calculation methods were used to simulate and compare the roadway support design scheme,and the roadway support scheme is determined.The field verification results show that the deformation of the surrounding rock of the roadway is effectively controlled after the roadway is supported by the new support design scheme,which provides a reference for coal roadway support under similar conditions.

关 键 词：采动影响 大断面 支撑压力 数值模拟 支护方案 

分 类 号：TD353[矿业工程—矿井建设]