束状深孔拉槽爆破参数优化研究  

Research of Blasting Parameter Optimization for Bunch-deep-holes Cutting

作　　者：刘优平[1] 张鸿[1] 黄刚海[2] 

机构地区：[1]南昌工程学院 [2]中南大学

出　　处：《金属矿山》2011年第5期4-8,11,共6页Metal Mine

基　　金：国家自然科学基金项目(编号:50969007);江西省教育厅青年科学基金项目(编号:GJJ10272)

摘　　要：凡口铅锌矿间柱采场受过去采矿扰动影响,矿岩破碎,掘进切割天井困难。借鉴束状孔爆破的原理,采用束状深孔对间柱采场进行拉槽,取代天井为后续爆破提供自由面和补偿空间。采用ANSYS/LS-DYNA对拉槽孔爆炸应力场进行分析,确定合理拉槽爆破参数。研究结果取得良好现场应用效果。Due to the disturbance by the former mining,it was difficult to crush rocks and cut the shafts for pillars＇ mining in Fankou Lead-zinc mine.Referring to the principle of bunch-holes blasting,the bunch-deep-hole technique was adopted to cut the pillar stope and to provide free surfaces and compensated space for later blasting instead of the shaft.Then,ANSYS/LS-DYNA was used to analyze the blast stress field of cutting holes to determine the parameters for cutting blasting.This research got well result in practical application.

关 键 词：采矿工程 束状孔拉槽 ANSYS/LS-DYNA 装药结构 

分 类 号：TD235.33[矿业工程—矿井建设]