岩溶发育区微差爆破孔间殉爆引起拒爆的分析  

STUDY ON MISFIRE INDUCED BY SYMPATHETIC DETONATION BETWEEN BOREHOLE OF MILLISECOND BLASTING IN KARST-DEVELOPED AREA

作　　者：郭学彬[1] 蒲传金[1] 冯德润 杨玉平 

机构地区：[1]西南科技大学环境与资源学院,绵阳621010 [2]双马水泥股份有限公司石灰石矿,绵阳621716

出　　处：《中国矿业》2005年第11期73-75,共3页China Mining Magazine

摘　　要：在岩溶发育区进行深孔台阶微差爆破,溶洞和裂缝可能贯通相邻炮孔,先爆孔产生的冲击波,容易通过裂缝殉爆后爆孔的装药,从而破坏起爆网络,产生拒爆。本文通过某石灰石矿爆破实例,分析了在岩溶发育区采用电雷管———导爆索起爆网路进行深孔台阶微差爆破时,岩溶裂隙引起相邻孔装药殉爆,进而产生拒爆的原因,并提出了克服此类拒爆事故的有效措施。Borehole of long hole bench millisecond blasting in Karst-developed area is transfixed by karst cave and cranny. Charge of other borehole is blasted by shock were of earlier blasting boreholes through cranny, consequently priming circuit is destroyed and misfire is brought, Based on some blasting of certain limestone mine in this paper, reason of produced misfire of karst cave and cranny brought about sympathetic detonation of neighbouring boreholes is analyzed. Some good measure of prevent misfire is advanced,

关 键 词：爆炸力学 微差爆破 岩溶发育区 残爆 拒爆 

分 类 号：TD235.38[矿业工程—矿井建设]