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通过对宏顺石灰石山坡露天矿开采现状分析和对山坡露天矿建立螺旋运输坑线的应用技术研究,提出:螺旋运输坑线适合于自上而下形成单台阶等宽平台的山坡露天矿开采;对于孤立的山体高度大于50 m,山体倾角大于45°的山坡露天矿,采用螺旋坑线运输可形成固定运输道路,提高道路运输的安全性;对于分层开采垂直孔分次起爆的山坡露天矿应优选螺旋运输坑线运输。
Based on the analysis of the current status of the mining on the Hongsun limestone hillside open pit mine and the application technology of establishing the spiral transportation pit line on the hillside open pit mine, it is proposed that the spiral transportation pit line is suitable for the mining of hillside open pit with a single step wide platform formed from top to bottom. For slopes and open-cast mines with mountain heights greater than 50 m and mountain inclination greater than 45 °, the use of spiral pit transport can form a fixed transport road and improve the safety of road transport. For the stratified mining, Spiral pit transportation should be preferred.