露天矿排土场堆置参数优化

设计合理的排土场堆置参数可以达到降低露天矿的排岩成本并保持排土场的稳定性的目的。在建立通用的堆置参数优化的多目标规划模型基础上，结合国内某露天矿实际情况，首先确立单排岩台阶稳定性、总排土场的稳定性与堆置参数的关系，之后在考虑碎岩的运输过程及排土场随排弃任务推进的空间几何演化规律下，建立排岩工作的运输成本及管理费用与堆置参数的函数关系表达式，从而得到该矿以排土场稳定性及排岩成本为优化目标的排土场堆置参数优选模型;对该模型求解得到最佳的排土场堆置参数：台阶数目为4，平盘宽度取最小平盘宽度57 m，单个排岩台阶高度30 m，排土场总堆置高度为120 m，排土场边坡角为26°，该结果与矿山实际情况相符合。

Heap Parameters Optimization of Open-pit Mine Waste Dump

The reasonable stacking parameters of waste dump would achieve the purpose of reducing the dumping cost and maintaining the waste dump security.On the base of multi- objective programming model for optimizing the stacking parameters，and considering the practical situation of an open-pit mine at home，the relationship between the single bench stability，the stability of the overall waste dump，and the stacking parameters was determined firstly.Then，the functional relationships express between the stacking parameters and the transport and management cost of waste rocks was established by considering the waste transport process and the spatial geometry evolution laws with the enlargement of the waste dump area.Based on this，the stacking parameters optimizing model of waste dump was obtained under the purpose of keeping the stability of waste dump and the reducing the dumping costs.The optimal stacking parameters was solved by the model as follows：the number of dump steps is 4，the minimum dump bench width value is 57 m，the height of single step is 30 m，the height of each dumping bench is 120 m，and the slope angle of waste dump is 26°.This result was in accord with the actual situation.