工作面过斜交空巷围岩控制技术研究  

Study on Control Technology of Surrounding Rock during Working Face Oblique Crossing Empty Roadway

作　　者：柳军涛 要天富 武德峰 高林生[3] LIU Juntao;YAO Tianfu;WU Defeng;GAO Linsheng(Jinneng Holding Coal Industry Group Xindadi Company,Jinzhong 032700,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Xuzhou 221116,China;School of Safety Engineering,North China Institute of Science and Technology,Beijing 101601,China)

机构地区：[1]晋能控股煤业集团新大地公司,山西晋中032700 [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]华北科技学院安全工程学院,北京101601

出　　处：《煤炭技术》2023年第9期68-73,共6页Coal Technology

摘　　要：针对工作面过空巷期间发生片帮、冒顶及压架等技术难题,以新大地公司综采工作面过斜交大断面托顶煤空巷为背景,建立了UDEC数值计算模型,反演分析了15405工作面回采期间残余煤柱应力演化规律、裂隙扩展特征以及表面位移变化规律,总结了工作面前方托顶煤空巷围岩失稳变形机理。基于密实充填控制思路,提出了高水材料分段密闭充填技术用于大断面托顶煤空巷围岩的稳定控制。现场试验效果良好,研究成果可指导类似地质条件下工作面过空巷期间的安全回采。In view of the technical problems such as wall spalling,roof fall and frame pressing during the goaf crossing of the working face,establishes UDEC numerical calculation model based on the background of the inclined large section supporting coal goaf crossing the fully mechanized working face of Xindadi company,and analyzes the evolution law of residual coal pillar stress,the characteristics of fissure expansion and the change law of surface displacement during the recovery of the 15405 working face,and summarizes the instability deformation mechanism of the surrounding rock of the side supporting coal goaf in the working face.Based on the idea of dense filling control,puts forward the technology of sectional closed filling with high water content material for the stability control of surrounding rock of of large cross-section top-supporting coal roadway.The technology which has succeed in field test can guide the safe mining during the working face crossing the roadway under similar geological conditions.

关 键 词：大断面 托顶煤巷道 失稳机理 高水材料充填 

分 类 号：TD353[矿业工程—矿井建设]