特厚煤层短壁综放大断面切眼巷道围岩控制研究OA
Study on surrounding rock control of large cross-section open-off cut in short-wall fully mechanized top-coal caving of extra-thick coal seam
以山阴金海洋南阳坡煤矿特厚煤层短壁综放工作面为研究对象,针对跨度达8.7 m的综放大断面切眼支护设计,既要满足有效控制切眼巷道围岩变形,又要尽可能减少支护材料浪费和支护成本偏高的问题,利用数值模拟软件FLAC3D研究了不同支护方案下顶板预应力场分布特征,确定了大跨度切眼的支护形式为锚杆、金属菱形网、锚索+W钢带以及单体支柱等的联合支护形式,通过校核支护参数,支护设计均能够满足要求,最后对围岩变形量进行了现场观测,浅部、深部基点离层值分别为9mm、…查看全部>>
Taking the short-wall fully-mechanized caving face of extra-thick coal seam in Nanyangpo Mine of Shanyin Jinyang as the research object,aiming at the support design of fully-mechanized enlarged section cut with a span of 8.7 m,it is necessary to meet the requirements of effective control of surrounding rock deformation of cut roadway,and to minimize the waste of support materials and the high cost of support.The numerical simulation software FLAC3D was used …查看全部>>
王志根;汪国安;本亚敏·哈里克
山阴金海洋南阳坡煤矿,山西朔州 036000中国矿业大学(北京)能源与矿业学院,北京 100083中国矿业大学(北京)能源与矿业学院,北京 100083
矿山工程
大断面切眼数值模拟理论计算顶板控制现场实测
large cross-section open-off cutnumerical simulationtheoretical calculationroof controlfield measurement
《煤炭与化工》 2024 (2)
14-19,6
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