近充填体崩矿过程爆破振动控制研究  

Study on Blasting Vibration Control during Mining near the Fill-mass

作　　者：刘优平[1,2] 龚敏[1] 赵江倩[2] 黄刚海[2] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]南昌工程学院土木与建筑工程学院,江西南昌330099

出　　处：《矿冶工程》2011年第5期13-17,共5页Mining and Metallurgical Engineering

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

摘　　要：采用ANSYS/LS-DYNA分析凡口铅锌矿间柱采场近充填体炮孔的爆炸应力场,提取充填体内一系列节点的振动速度,加以对比分析,以优化炮孔装药结构,控制爆破对充填体的影响。研究结果表明:炸药在炮孔内分布越均匀,爆破对充填体的破坏效应越小;采用空气间隔装药时,爆破能量分布更为均匀,能更有效地控制爆破振动。ANSYS/LS - DYNA was used to analyze blast stress field of blast-hole near the fill-mass in column stope in Fankou Lead-zinc Mine. The vibration velocity of a series of nodes inside the fill-mass was extracted for comparison and analysis, so as to optimize the hole＇s charging structure, bringing the blasting effect to the fill-mass under the control. Research results showed that more even distribution of explosives in blasting hole could reduce the breaking effect of blasting to fill-mass, and air-dech charging structure could bring a more even distribution of blasting energy, resulting in blasting vibration under more effective control.

关 键 词：采矿工程 爆破振动 ANSYS/LS—DYNA 充填体 装药结构 

分 类 号：TD853.34[矿业工程—金属矿开采]