黑沟主堆上坝料开采硐室爆破

Chamber Blasting for Stone Exploitation in Hei-gou

介绍黑沟主堆上坝料开采硐室爆破所采用的特殊方法。在硐室掘进过程中,由于施工的其中一条硐室掘进控制导线与设计方位线偏差,导致药室的最小抵抗线由原设计的40m增大到实测的57m,调整装药结构、装药位置及条形药包的装药量,合理利用已掘进成形的药室形状采用条形聚能药包进行超大抵抗线硐室大爆破。对于条形药包的端部采用类哑铃形装药结构,加大条形药室端部药量的措施。利用喷雾器实现湿式钻眼。查阅、检索到相关资料,未找到超过57m抵抗线、类哑铃形装药结构和喷雾器硐室大爆破的相关报道。

The special method for chamber blasting is recommended for stone exploitation in Hei-gou dig into the process inside in the hole room, because of the construction of among them, the deviation of a hole room which is dug into the control direct line and design line cause the minimum holdout line of the chamber form 40 m to the 57 m. But charge composition is regulated, charge place and charge quantity is calculated again, energy focused charge is used to the extra-long restrict of chamber blasting. The charges amount measure is added for linear charges end to take similar dumbbell shape. Making use of the sprayer can realize wet type in humid hole drilling. No related data, the similarity dumbbell charges form construction with the related report, are found to exceed 57 m holdout line, this is minority in material data indexed and consulted.