在深露天矿的设计和生产实践中,广泛采用在工作帮形成窄平台区段(留矿柱)的方法来降低露天矿生产初期的生产剥采比。因此,越来越需要根据影响因素的变化进一步更完善地确定露天矿工作区基本参数允许值的方法。有的文献提出,可根据采矿作业沿矿体接触线的延深速度和矿柱扩帮的延深速 In the design and production practice of deep open-pit mines, the method of forming a narrow platform section (retaining pillar) in the work area is widely adopted to reduce the production stripping ratio in the early stage of open-pit mines. Therefore, it is more and more necessary to further determine the allowable values ​​of the basic parameters of the open pit mine working area according to the changes of the influencing factors. Some literature suggests that according to the depth of ore mining operation along the line of contact with the extension and extension of ore column to help speed