【摘要】 对山西省临汾地区4个县的地方煤矿安全现状进行研究,收集了200多份地方煤矿安全现状综合评价资料。利用层次分析法,建立了地方煤矿安全现状综合评价指标体系;采用模糊综合评价方法,对临汾地区4个县的地方煤矿以县级为单位分别进行了模糊综合评价及分析比较研究,论述了模糊综合评价方法的有效性及其在地方煤矿系统安全评价中的应用前景,为模糊综合评价方法在矿业系统工程的推广应用拓展了思路。更多还原

【Abstract】 Simulation study on distribution regularity of fore abutment pressure under different mining conditions was conducted according to the coal seam conditions in Yima Changcun Mine,on the basis of theoretical computation and by using UDEC discrete element software.The results showed that the peak value of abutment pressure did not change greatly with the increase of mining thickness,but the peak value point migrated into coal body;the width of limit equilibrium zone of the abutment pressure increased evidently;the peak value of abutment pressure markedly changed from point distribution to regional distribution.oning processes are convenient for the computer programs.更多还原