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以某露天煤矿为研究背景,根据该矿区工程地质特点,采用极限平衡法,针对易燃区边坡第1开采阶段进行边坡稳定性评价。通过计算可知,在保证内排跟进速度的情况下,第1阶段条采方案可满足矿区生产要求。在此基础上,结合现场实际情况,针对第2阶段边坡控制开采方案进行研究,进而确定条采煤层厚度、宽度、开采边界以及内排土场参数,确保露天煤矿安全生产。
Taking a opencast coal mine as a research background, according to the engineering geological characteristics of the mine, the slope stability was evaluated for the first mining stage in the flammable zone by the limit equilibrium method. It can be seen from the calculation that in the case of ensuring the follow-up speed of the inner row, the first phase of the strip mining scheme can meet the production requirements of the mining area. On this basis, combined with the actual situation in the field, the second stage of slope control mining program to study, and then determine the thickness of the coal seam, width, mining and internal dump site parameters to ensure the safety of open-pit coal mine production.