巴润矿水介质间隔装药数值模拟分析  

Numerical Simulation of Water Dielectric Interval Charging in Barun Mine

作　　者：邵红光 王德胜 黄冕 兰盾 马一超 Shao Hongguang;Wang Desheng;Huang Mian;Lan Dun;Ma Yichao(School of Civil and Resource Engineering,University of Science and Technology BeiJin)

机构地区：[1]北京科技大学土木与资源工程学院

出　　处：《现代矿业》2017年第11期192-195,共4页Modern Mining

摘　　要：在深凹露天矿山台阶爆破过程中,炮孔含水现象普遍,含水炮孔可能会引起顶部大块率高、底部根底多等不良爆破效果。在进行水孔爆破时,不同的水层位置会对爆破结果产生一定的影响。结合巴润矿的实际生产情况,针对水层位于底部、中部时的两种情况,基于非线性动力学分析软件LS-DYNA,采用流固耦合算法模型,从数值模拟角度对不同的装药结构进行了分析计算。对比分析了两种情况的计算分析结果,综合分析了单元有效应力云图以及炮孔底部、台阶边坡节点的有效应力最大值,讨论了爆炸后应力波的传播特点以及不同装药结构的优缺点,得出了一些有意义的结论,并给出了完善水孔爆破作业的建议。In the process of bench blasting in deep concave open-pit mine,the phenomenon of water hole is happened generally,so,the poor blasting effects（ high large rate of the top of hole and many blasting foundations are occurred at the bottom of hole） can be occurred. During the process of water hole blasting,the influence of different water-layer location to blasting effects is different. According to the actual production situation of Barun Mine,under the conditions of the water-layer is located at the bottom or middle of blasting hole,the different charging structures are simulated and analyzed from the simulation aspects by adopting fluid-solid coupling algorithm model based on the nonlinear dynamic analysis software LS-DYNA. The simulation results is analyzed,the unit effective stress cloud diagram and the maximum effective stress of the hole bottom and step slope are analyzed comprehensively,the transmission characteristics of the stress wave after blasting is discussed,besides that,the advantages and disadvantages of different charging structures are also studied in depth. Based on the above discussion results,some meaningful conclusions are obtained,and some suggestions about optimizing water hole blasting operation are given.

关 键 词：深凹露天开采 台阶爆破 水孔爆破 水介质间隔装药 流固耦合算法 数值模拟 

分 类 号：TD235.4[矿业工程—矿井建设]