摘要
本文根据Hawkes应力波理论,采用图解法对南芬露天铁矿孔内不同装药结构、装药品种及不同起爆方法条件下的炮孔周圈爆炸应力场作了图解分析和计算。计算结果表明在孔径相同情况下,克服根底的主要因素是炮孔底部装药品种,最佳起爆方式是能加强底板作用力的起爆法。计算结果与南芬铁矿现场试验情况比较接近。
Based on Hawkes stress wave theory, the stress field around the blastholes at Nen Fen open pit Mine was analysed and calculated using graphic analysis by varying priming methods and blasting charges. The results showed that the key to the toe problem is the blasting explosives in the bottom of blastholes, and that the reasonable priming method is such that the stresses at floor levels of benches can be enhanced.
出处
《矿冶工程》
CAS
CSCD
北大核心
1992年第4期18-21,共4页
Mining and Metallurgical Engineering
关键词
高威力炸药
起爆
算图法
露天开采
High explosive, Priming method, Graphic analysis
