【作者】 廖成孟；

【导师】 马建军； 蔡陆军；

【作者基本信息】 武汉科技大学 ， 采矿工程， 2007， 硕士

【摘要】 根据大冶铁矿生产所需,研究探讨了适合矿山由露天坑回采转至地下回采的安全回采工艺的确定,以便具体解决此过程中可能面临的各种复杂问题。目前露天矿转地下回采一般面临许多复杂问题,为了保证安全生产,应需进行边坡稳定性定性分析,地下生产作业工艺介绍,覆盖层与回采空区适时处理,放矿溜井雨季冲渣预防及其处理措施,建立合理回采放矿制度。在高陡边坡处理方面,结合实际情况先分析了露天开采与地下开采对边坡及其弱面的影响、边坡在水的影响下的破坏方式,再进行稳定性分析,最后分析了覆盖回填层对边坡的影响;在回采工艺上通过分析相关地下开采实际情况,对此无底柱分段崩落法的实际应用如凿岩、优化爆破、出矿方式和相关的通风安全进行相关的剖析,并对回采爆破的炮孔程序生成与放矿数值仿真模拟模型的研究作了一定的探讨;在雨季冲渣灾害方面结合相关实际与理论,通过分析裂隙构造、水文地质情况和采矿活动等影响成因,提出了具体结果与预防措施。更多还原

【Abstract】 The safe mining craft method, which is put forward to solve all kinds of complicated problems of the underground mining after the open-pit mining, is researched to adapt to the underground mining beneath the strip mine. Nowadays because of the puzzling complicated problems of the underground mining after and beneath the strip mine, it is necessary to analyze the stability of the high steep slope of the strip mine and the expatiation of the underground mining craft. Also establishing the suitable mining system is needed to solve the filling of overlay in mining hollow and prevent the debris flow in the rainy season. The paper discusses all of the problems above.In the aspect of the high steep slope of the strip mine, as well as the influence of the overlay and debris fall in mining hollow, the stability of the slope is analyzed based on the matter of the fact, the analysis of the slope and crannies influenced by the mining of the open-pit and underground shaft, and slope destroy mode evoked by water. In the aspect of mining craft of the Pillarless Sublevel Caving, such proceedings as drilling, blasting optimization, ore drawing mode and the related ventilation are introduced as the numerical particle simulation of ore drawing and blasting-hole configuration map auto-drafted by computer programming are discussed. Then according to factors such as the crannies configuration, water geology and mining movement, the debris flow in the rainy season are systemically analyzed and guarded against flooding into the underground shafts through collapse areas. All in all, the in-depth study of the all aspects of the mining after and beneath the open-pit mining about the Daye Iron mine has the definite meaning as use for reference.更多还原