基于三维精细数值模型的李楼铁矿爆破参数优化  

Blasting Parameters Optimization in Lilou Iron Mine Based on 3D Refined Numerical Model

作　　者：龚永超 陆锦涛 林卫星 欧任泽 杨春[3] GONG Yongchao;LU Jintao;LIN Weixing;OU Renze;YANG Chun(Changsha Institute of Mining Research Co.,Ltd,Changsha,Hunan 410012,China;National Engineering Research Center for Metal Mining,Changsha,Hunan 410012,China;Central South University,Changsha,Hunan 410012,China)

机构地区：[1]长沙矿山研究院有限责任公司,湖南长沙410012 [2]国家金属采矿工程技术研究中心,湖南长沙410012 [3]中南大学,湖南长沙410012

出　　处：《矿业研究与开发》2020年第11期16-20,共5页Mining Research and Development

基　　金：国家科技支撑计划项目(2013BAB02B04)。

摘　　要：为优化李楼铁矿扇形中深孔爆破参数,采用AUTO CAD与ANSYS/LS-DYNA联合建模技术构建了精细化双排扇形孔三维数值模型,并采用工作面分割三维实体的方法改善了该复杂精细模型的拓扑结构,实现了模型六面体网格划分。基于显式动力分析软件LS-DYNA数值模拟结果,以地表爆破振动速度控制为主要目标,结合矿石爆破块度空间分布形态,确定了李楼铁矿的最优爆破参数为:排距1.9m,孔底距3.0m。In order to optimize the parameters of fan-shaped medium and deep holes in Lilou iron mine,a 3 Drefined model for double-row fan-shaped holes was established by combining AUTO CAD with ANSYS/LS-DYNA.And the topological structure of the complex refined model was improved by using working face to segment 3 Dsolid,and the hexahedral mesh of the model was realized.According to the numerical simulation results of the explicit dynamic analysis software LS-DYNA,taking the vibration velocity control of surface blasting as the main objective and combining the spatial distribution of ore blasting fragmentation,the optimal blasting parameters of Lilou iron mine are determined as follows:the row spacing of blast holes s 1.9 m,and the bottom distance of holes is 3.0 m.

关 键 词：爆破参数 数值模型 震动速度 

分 类 号：TD235.4[矿业工程—矿井建设]