三软地层下连采连充工作面巷道支护优化研究  

Study on Optimization of Roadway Support in Continuous Mining and Filling Working Face under Three Soft Strata

作　　者：鲁浪 汪锋 周景奎 刘明明 邹玉龙 祝伟豪 LU Lang;WANG Feng;ZHOU Jingkui;LIU Mingming;ZOU Yulong;ZHU Weihao(College of Energy and Mining Engineering,Shandong University of Science and Technology,Qingdao 266590,China;State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology,Shandong University of Science and Technology,Qingdao 266590,China;School of Mining and Mechanical Engineering,Liupanshui Normal University,Liupanshui 553004,China;Liangjia Coal Mine,Shandong Energy Luxi Mining Group,Longkou 265700,China)

机构地区：[1]山东科技大学能源与矿业工程学院,山东青岛266590 [2]山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地,山东青岛266590 [3]六盘水师范学院矿业与机械工程学院,贵州六盘水553004 [4]山东能源鲁西矿业集团梁家煤矿,山东龙口265700

出　　处：《煤炭技术》2024年第10期12-17,共6页Coal Technology

基　　金：国家自然科学基金项目(52274129);山东省高等学校青创科技支持计划项目(2022KJ320);贵州省科技支撑计划项目(黔科合支撑[2023]一般247)。

摘　　要：梁家煤矿2112连采连充工作面采充过程中出现了两侧煤、两侧充填体和一侧煤一侧充填体3种类型巷道。针对3种巷道开采过程中差异化变形问题,通过数值模拟分析巷道塑性区及位移场分布特征,研究巷道围岩变形规律,提出优化方案。研究结果表明:由于煤、充填体强度不同,3种巷道在塑性区和位移场分布上差异较大。巷道在开采过程中出现差异化变形,两侧煤巷道变形最为严重,一侧煤一侧充填体次之,两侧充填体最小,最大顶底板移近量分别为548、310、47 mm,最大两帮移近量分别为442、330、37 mm。在巷道顶板、煤帮增加支护对3种巷道进行优化,巷道优化后最大顶底板移近量减小了69.2%,最大两帮移近量减小了77.1%,提高了巷道围岩支护效果和整体稳定性。During the mining and flling process of 2112 continuous mining and filling working face in Liangjia coal mine,there are three types of roadways:coal on both sides,filling body on both sides and filling body on one side of coal.Aiming at the problem of differential deformation in the mining process of three kinds of roadways,the distribution characteristics of plastic zone and displacement field of roadways are analyzed by numerical simulation,the deformation law of roadway surrounding rock is studied,and the optimization scheme is put forward.The results show that due to the different strength of coal and filling body,the distribution of plastic zone and displacement field in three kinds of roadways is quite different.The roadway has differential deformation during the mining process.The deformation of the coal roadway on both sides is the most serious,followed by the filling body on one side of the coal,and the filling body on both sides is the smallest.The maximum displacement of the roof and floor is 548 mm,310 mm and 47 mm,respectively.The maximum displacement of the both sides is 442 mm,330 mm and 37 mm,respectively.The three kinds of roadways are optimized by increasing support in the roof and coal sides of the roadway.After the optimization of the roadway,the maximum displacement of the roof and floor is reduced by 69.2%,and the maximum displacement of the both sides is reduced by 77.1%,which improves the supporting effect and overall stability of the surrounding rock of the roadway.

关 键 词：连采连充 围岩变形 塑性区 巷道支护 优化设计 

分 类 号：TD325[矿业工程—矿井建设] TD353