中深孔爆破掏槽方式在巷道掘进中的研究及应用

Research and application of deep hole blasting in tunnel excavation in coal mine

钻眼爆破,是煤矿常用的掘进方法之一。中深孔爆破技术,是钻眼爆破重要研究课题。能否实现中深孔爆破,对巷道掘进速度、安全效果、施工成本都有较大影响。当前因中深孔爆破技术在理论和实践上都存在许多制约因素。本文着重论述经过二十余次的中深孔爆破试验总结出的掏槽方式及优缺点。

Drilling and blasting is one of the main driving methods in coal mine. medium-length hole blasting technology is an important research topic in drilling hole blasting. Whether to achieve the deep hole blasting, have a greater impact on the roadway excavation speed, safety, construction costs. At present, there are many constraints in theory and practice, the medium-length hole blasting technology have not been effective application and popularization in the coal mining enterprises, focuses based on cutting test more than 20 times the advantages and disadvantages were summed up in this paper.