束状孔当量球形药包爆破漏斗试验研究  

Blasting Crater Experiment and Research on Equivalent Spherical Charge by Bundle-Holes

作　　者：史秀志[1] 田建军[1] 王怀勇[1] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《矿业研究与开发》2008年第5期83-85,共3页Mining Research and Development

摘　　要：根据冬瓜山矿床的特点与开采技术条件，对束状深孔等效孔径当量球形药包爆破新工艺进行了创新性研究和试验。取得了如下成果：等效束状孔爆破效果明显好于大孔爆破，合理的束间距范围应为：L0=（1～1．5）d0，且多束孔同时起爆，其爆破作用效果比单束孔好，从爆破比能看，多孔粒状铵油炸药比乳化硝铵炸药爆破效果好：Based on the characteristics and mining conditions of Dongguashan deposit,a new equivalent spherical charge blasting technique with large diameter bundle - hole is explored and tested. The blast effect of equivalent Bundle - holes, with rational bundle spacing from 1d0 to 1.5d0,is clearly better than that of large - diameter hole blasting. Comparing with single - bundle holes blasting, the effect of multibundle holes blasting at one time is better. In view of blast specific energy, the blasting effect of porous granular ANFO is superior to that of emulsified ammonium nitrate explosives.

关 键 词：等效束状孔 束间距 最佳埋深 爆破漏斗试验 

分 类 号：TD235.4[矿业工程—矿井建设]