近水平露天煤矿端帮靠帮开采方式与剥采比研究

运用露天采矿学的基本原理,提出了端帮靠帮开采的基本方法、实现形式、基本条件以及靠帮开采的意义,给出了靠帮开采剥采比的概念;在单一煤层和复合煤层情况下,推导出了2种端帮靠帮开采方式的靠帮开采剥采比计算公式,建立了不同煤层厚度和覆盖物厚度对靠帮开采剥采比影响趋势预测的数学模型和图示方法.结果表明：在近水平露天煤矿实施端帮靠帮开采,可以降低剥采比,提高煤炭资源回收率和经济效益,同时也丰富了露天开采方法与设计理论.

Research on the Mining Method and Stripping Ratio of Steep End-Slope Mining in Surface Coal Mines with Flat Coal Deposit

Based on the basic principles of surface mining, the essential methods, the realization form, the basic conditions and the significance of the steep end-slope mining were proposed. The concept of the steep end-slope mining stripping ration was put forward. The formulas of steep end-slope mining stripping ratio were obtained under the conditions of the single coal seam and multiple coal seams. The forecast mathematical models and figure illustrating methods of variation trend of steep end-slope mining stripping ratio with different thickness of coal seams and overburden were established. The results show that the stripping ratio is reduced and the recovery ratio and economic benefit are improved with steep end-slope mining in flatted surface coal mine. The content has the vital significance for enriching design theory and guiding the mining operation of surface mine.