大海则煤矿大采高工作面开采方法模糊评价

Fuzzy Evaluation of Mining Method for Working Face with Large Mining Height in Dahaize Coal Mine

针对大海则煤矿2号煤层存在的问题,对其采煤工作面的开采方法问题进行模糊评价,基于层次分析法,建立了大采高煤层开采方案选择的指标评价体系,并对指标体系中各种影响因素的权重进行了合理分配,基于模糊数学和矩阵分析理论,建立了模糊综合评判模型。结合大海则煤矿2号煤的实际地质情况,开采方案分为分层开采、放顶煤开采与大采高综采,经模糊综合评价后,最终确定为大采高综采最为合理,这与大海则煤矿现场实际生产采用的开采方法一致,验证了该评价模型的合理性与正确性。

In view of problems of No. 2 coal seam in Dahaize Coal Mine,fuzzy evaluation is used to carry out mining method study for the coal mining face. Based on hierarchy analysis,index evaluation system for large mining height broken coal seam mining scheme selection is established,and the various factors affecting the weights of index system are rationally distributed. Based on fuzzy mathematics and the theory of matrix analysis,fuzzy comprehensive evaluation model is established. Combined with the actual geology conditions of No. 2 Coal Mine,mining scheme is divided into layer mining and sub-level caving mining and large mining height fully mechanized caving mining. After fuzzy comprehensive evaluation,we finally determine that large mining height fully mechanized caving mining is the most reasonable; this is consistent with the actual production mining method for Dahaize Coal Mine.