This paper introduces controlled blasting technology on signal chamber of pit-bottom and main haulage roadway, which are of complex condition, lithological character and highly security.
介绍了采用控制爆破技术施工位于井底车场及主要运输大巷的信集闭峒室，条件复杂，岩性变化大，要求安全性高。
The quality of the haulage road in a large-scale open pit directly affects the operating costs and haulage efficiency of the trucks.
大型露天矿运输道路质量的好坏直接关系到矿用汽车运行成本和运输效率。
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