西藏驱龙铜多金属矿项目冻土层爆破及剥离技术研究

Study on Blasting and Stripping Technology of Permafrost Layer in Qulong Copper Polymetallic Mine Project in Tibet

冻土层爆破与剥离是影响西藏驱龙铜多金属矿露天采剥项目正常生产的技术难题之一。对冻土层的形成、主要影响因素进行了详细地分析研究,结合有关爆破经验参数对其进行了爆破设计,采用爆破试验收集实际数据,不断调整和优化相关爆破参数,达到了冻土层松动爆破的预期效果。同时,根据设备配置情况对其生产效率,冻土层爆破、剥离、昼夜温差影响等因素进行了综合分析,总结出“小规模爆破、及时采剥”的冻土层爆破及剥离技术处理方案。

Blasting and stripping of permafrost layer is one of the technical problems that affect the normal production of open-pit stripping in Qulong Copper Polymetallic Mine in Tibet. In this paper, the formation of frozen soil layer and the main influencing factors are analyzed and studied in detail. Combining with the relevant blasting experience parameters, the blasting design is carried out. The actual data are collected by the blasting test, and the relevant blasting parameters are adjusted and optimized continuously. Finally, the expected effect of the loose blasting of permafrost layer is achieved. At the same time, the factors such as production efficiency, permafrost blasting and stripping and the influence of diurnal temperature variation are comprehensively analyzed according to the equipment configuration, and the treatment scheme of “small-scale blasting, timely stripping” of permafrost layer blasting and stripping technology is summarized.