某铅锌矿分段凿岩阶段空场法试验研究  

Experimental Research on Open-Stope Mining Method of Sublevel Rock Drilling in the Lead-Zinc Mine

作　　者：赵文奇[1,2] 张亭 刘武团[3] 何良军 ZHAO Wen-qi;ZHANG Ting;LIU Wu-tuan;HE Liang-jun(Northwest Institute of Mining and Metallurgy,Baiyin 730900,China;Efficient Deep Mining and Disaster Control Engineering Laboratory,Baiyin 730900,China;Deep Mining Company of Baiyin Nonferrous Metals Group Co.Ltd.,Baiyin 730900,China)

机构地区：[1]西北矿冶研究院,甘肃白银730900 [2]甘肃省深井高效开采与灾变控制工程实验室,甘肃白银730900 [3]白银有色集团股份有限公司深部矿业公司,甘肃白银730900

出　　处：《甘肃冶金》2020年第5期6-10,共5页Gansu Metallurgy

摘　　要：针对某铅锌矿急倾斜厚矿体赋存状态、开采技术条件和矿的稳固程度,开展了分段凿岩阶段空场法试验;采准工程布置优化为改进B型,可节省工程量约30%;切割拉槽采用间隔装药分次爆破技术,有效避免了爆破悬顶和立槽产生;爆破回采时扇形中深孔A区采用孔底高威力起爆和B区孔口交错装药措施,降低了炸药单耗和装药量;可为类似矿体开采提供经验借鉴。Aiming at the occurrence state of the steeply inclined thick orebody,mining technical conditions and the stability of the mine in a lead-zinc mine,experimental research was carried out which about the open-stope mining method of sublevel rock drilling;the mining standard project layout was optimized to the improved type B,which could save about 30%of the engineering amount;the blasting technology of interval charging and staged blasting is adopted to cut the groove,which can effectively avoid the occurrence of blasting hanging roof and vertical groove;in the area of fan-shaped medium deep hole during blasting mining,it reduces the unit consumption and charge of explosives which is A-zone uses the hole bottom high-power detonation and the B-zone hole opening staggered charging measures;which can be used for reference in similar ore body mining.

关 键 词：分段凿岩阶段空场法 改进B型布置 间隔装药分次爆破 炮孔密集程度 

分 类 号：TD853[矿业工程—金属矿开采]