用PVC管解决风化破碎带井巷掘进爆破效果差的难题

Using PVC tube to solve the problem of poor blasting effect in roadway excavation in weathered fracture zone

在节理裂隙发育、风化破碎程度高的岩层里掘进巷道,爆破效率低是一个普遍存在的难题。用PVC塑料管植入炮孔内进行装药爆破,很好的解决了这一难题,不仅爆破效率高,而且具有装药快、成本低、安全系数高等特点。

The blasting efficiency is low in rock formations with high fracture and joint development, and it is a common difficult problem. It is a good solution to this problem that the PVC plastic tube is implanted in the hole of the blasting hole, which not only has high blasting efficiency, but also has the characteristics of fast charging, low cost and high safety factor.