摘要
基于九里山矿16071工作面采矿地质条件,通过现场观测得到了九里山矿底抽巷失稳变形破坏过程:喷体开裂、帮部错动外鼓、顶板下沉甚至冒落、整体收敛变形失修;并通过数值模拟方法从垂直方向、水平方向综合分析得到该工作面底抽巷的最佳层位选择:底抽巷距煤层底板的垂向距离为11 m;水平方向上内错工作面巷道5 m。
Based on the mining geological conditions of 1607 working face in Jiulishan Mine,through field observation,the instability deformation process of the bed plate tunnel was obtained:shotcrete cracking,lateral dislocation and external bulge,roof subsidence and even caving,overall convergence deformation and disrepair.Through numerical simulation method,the optimal layer selection of floor drainage roadway in the working face was obtained from vertical and horizontal directions.The vertical distance between the floor drainage roadway and the coal seam floor is 11 m,and the horizontal direction is 5 m.
作者
李楠
孟冯超
赵高博
Li Nan;Meng Fengchao;Zhao Gaobo(Jiaozuo Coal Industry Company,Henan Energy and Chemical Industry Group Co.,Ltd.,Jiaozhuo 454150,China;School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,China)
出处
《能源与环保》
2021年第12期287-292,304,共7页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
国家自然科学基金资助项目(51774111)。
关键词
底抽巷
层位选择
数值模拟
瓦斯抽采
floor drainage roadway
layer selection
numerical simulation
gas drainage
