露天剥离危岩定向抛掷硐室爆破设计与实践  

Design and Application of Chamber Blasting and Directional Throwing for Unstable Rock in Open-pit Stripping

作　　者：欧任泽 袁节平[3] OU Renze;YUAN Jieping(Changsha Institute of Mining Research Co.,Ltd,Changsha,Hunan 410012,China;National Engineering Research Center for Metal Mining,Changsha,Hunan 410012,Chinal;Hunan Shizhuyuan Nonferrous Metals Co.,Ltd,Chenzhou,Hunan 423037,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]湖南柿竹园有色金属有限责任公司,湖南郴州市423037

出　　处：《矿业研究与开发》2018年第10期1-5,共5页Mining Research and Development

基　　金："十二五"国家科技支撑计划项目(2015BAB14B01)

摘　　要：柿竹园多金属矿床塌陷区北部立有一陡峭三棱椎山体,严重威胁露天地下联合开采的安全。基于施工安全性、技术经济合理性,优选大规模定向抛掷硐室爆破方案。采用分区分类爆破、集中药包方形布置、药包耦合装药、主副双起爆体等关键技术确保爆破效果。方案实施后,定向抛掷率达到63%,爆破危害控制在合理范围之内,为多金属矿床露天地下联合开采创造了条件。An abrupt triangular pyramid mountain, locating at the north of subsidence area in Shizhuyuan polymetallic mine, seriously affects the safety of combined mining of open-pit and underground. Based on construction safety, as well as technical and economic rationality, the massive chamber blasting and directional throwing method was optimally presented. The blasting effect was ensured by key technologies, such as divisional and classified blasting, square layout of centralized packing, coupling charged, as well as main and auxiliary double initiation body. After the implementation of the scheme, the directional throwing rate reached to 63%, and the blasting hazard was controlled within a reasonable range. The research results created conditions for the combined mining of open-pit and underground in polymetallic deposits.

关 键 词：露天剥离 硐室爆破 定向抛掷爆破 抛掷率 

分 类 号：TD235.4[矿业工程—矿井建设]