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涡北矿8#煤层采用综采放顶煤开采工艺,为对其冒放性进行评价和分类,以8203工作面为例,采用开采深度、煤层厚度和强度、夹矸厚度和强度、裂隙发育程度作为评价因素,综合运用模糊数学分类法、函数计算分类法和层次分析等数学方法对顶煤的冒放性进行评价。经过分析评判及现场观测,得出该矿8#煤层的冒放性极好。
In order to evaluate and classify the caving property of 8 # seam in Xubei Mine, fully mechanized top coal caving mining technology is adopted. Taking 8203 face as an example, the mining depth, coal seam thickness and strength, Degree as the evaluation factor, the integrated use of fuzzy mathematics classification, functional calculation classification and analytic hierarchy process and other mathematical methods to evaluate the top coal caving. After analysis and judgment and on-site observation, it is concluded that the coal seam # 8 of this mine has excellent caving ability.