【作者】 付天光；

【导师】 费鸿禄；

【作者基本信息】 辽宁工程技术大学 ， 岩土工程， 2002， 硕士

【摘要】 中深孔爆破是地下金属矿山采矿普遍采用的技术手段。该项技术的难点集中在如何提高爆破块度的均匀度指标、降低炸药单耗及器材的消耗量、降低矿石贫化率等实际问题上。“多排同段递减爆破技术”就是在这种背景下提出来的。 本文在现代爆破理论的基础上，分析了多排同段爆炸应力场的作用过程以及柱状装药结构中等效单元球状药包所激发的应力场特点，建立了炸药爆炸能量分布方程，明确了影响爆炸能量利用率的因素，构建了炮孔充填物运动过程模型，得出计算合理充填长度方程。在理论分析和现场多次试验的基础上，提出了多排同段递减爆破技术，同时得出最佳爆破参数。更多还原

【Abstract】 Middle-deep hole blasting technology is usually employed in underground metal mining. The difficult part of this technology focuses on several practical problems such as how to improve the equality of blasting block,how to decrease the consumption of explosive factor and blasting equipment and how to reduce the rate of lost mineral block. Concerning this,"the blasting technology of progressive decreasing multi-row and simultaneity" is presented.On the basis of modern blasting theories,the moving process of explosive stress field of multi-row and simultaneity is analyzed and the characteristics of stress field inspired by equivalent effect cell of globosity charge in cylindrical charge structure are considered. Thus energy distributing equation of detonator explosion is established and the explosive energy utilizing rate factors are known. So the moving process model of the hole filling is constructed and the equation of calculating reasonable filling length is produced. On the basis of theory analysis and a number of spot experiments,the blasting technology of progressive decreasing multi-row and simultaneity is presented and the best blasting parameters are obtained.更多还原