基于协调开采技术的相邻露天矿开采程序优化

针对相邻露天矿实施协调开采带来的长期经济效益与开采程序变化影响短期经济效益之间存在矛盾的问题,运用露天采矿学的基本原理,研究相邻露天矿开采程序优化。分析协调开采技术的特点及采场贯通的影响因素,提出采区划分方案优化准则;建立采场、排土场形态优化模型,给出相邻采场贯通时间的计算方法,并提出贯通后采场、排土场形态优化方法。笔者结合工程实例对模型进行了验证,结果表明:通过优化采场、排土场形态,可有效减少剥离量,增加内排空间,提高贯通采场期间两矿经济效益。

Optimization of mining sequence based on coordination mining technology between two adjacent open pits

To resolve the contradiction between long-term economic benefits generated by coordinating mining technology and short-term profits affected by changing mining sequences, we used the basic principles of surface mining to optimize the mining sequences of two adjacent open pits. We first analyzed the characteristics of coordination mining technology and influencing factors for unifying stopes, then proposed an optimization criterion about mining district dividing schemes, also built optimization models about forms of stope and dump and gave a method to calculate the time of unifying stopes, and finally proposed an method to optimize forms of stope and dump after stopes were unified. The proposed models were verified through an engineering example. The results show that optimizing forms of stope and dump can reduce overburden, increase internal dump space reasonably, and enhance economic benefits of open pits in the process of unifying stopes.