基于结构元理论的露天煤矿采剥计划模型

Dynamic optimization of production schedule in open-pit coal mines based on fuzzy structured element

针对露天煤矿开采中年采剥量为模糊数的采剥计划优化问题,引入了模糊结构元理论,将动锥排除法获得的各个地质最优开采体的模糊采剥量用结构元表示,构建基于结构元的露天煤矿采剥计划模型.对某露天煤矿进行实证研究.结果表明:受市场供求关系及技术可行性等影响,该模型可同时得到模糊最佳生产量,可能的采剥顺序,可能的生产寿命及模糊总净现值的隶属函数解析表达,把模糊问题用精确的表达式表示,可为决策者提供更多的信息.

For the sake of dealing the production schedule problem in open-pit,a dynamic optimization method was developed considering the characteristic of fuzzy structured element,and the fuzzy mining capacities of all ＂geologically optimum push-bakes＂ were analysed by the moving cove method.Some open-pit coal mine as a case study was analysed.The results show that considering the problems of supply and demand and technology,the model presents that is the fuzzy production capacity,the fuzzy mining sequence,the fuzzy mine life and the expression of the fuzzy net present value（NPV） membership function,the actual fuzzy problems are analyzed by accurate expression,and more important information are obtained.