聚能爆破掘进技术在平顶山矿区的应用

摘要

Most coal mine in Pingdingshan mining depth greater than 800 m, four mine rock roadway Pingdingshan shares rock hard, the stress is high, the tunneling process, and the presence of low blasting efficiency, low and footage overbreak serious problem. Blasting operations using the cohesive energy blast tunneling technology and design parameters and blasting hole layout program. Engineering practice shows that the scheme round robin footage increased by 15%overbreak roadway reduced by 50%, saving 20 percent of the cost, technical and economic good effect.%平顶山矿区大部分矿井采深大于800 m，平煤股份四矿岩巷岩石硬、地应力高，在掘进的过程中，存在爆破效率低、进尺低和超欠挖严重的问题。在掘进爆破作业中采用聚能爆破掘进技术，并设计了爆破参数和炮孔布置方案。工程实践表明，该方案单循环进尺提高了15%，巷道围岩超欠挖降低了50%，节约了20%的成本，技术经济效果良好。