基于功效和耦合的铁路与露天煤矿协调度评价

为定量评价我国铁路运输状况和露天煤矿生产的协调关系,引入容量耦合理论建立耦合度模型,定量分析了煤矿生产系统和外运系统的协调程度及子系统和参数对系统整体的影响,研究了露天煤矿采掘、运输设备的运用指标和铁路外运系统数量、载重、波动等参数的选择,采用改进的功效系数法对不同参数进行同量化处理,最后通过实例检验模型反映现实生产的能力.结果表明:露天煤矿与预期相比,较低的入矿车数对系统协调造成了较大的影响,其贡献率仅为其他指标中最小数值的20%;接发列车的不均衡系数对系统不协调影响较小,若日平均入矿车数提高到计划数量的80%,则系统耦合度提高了17%.

Evaluation of Coordination between Railway Transportation and Open-Pit Mining Based on Efficacy and Coupling

In order to evaluate the coordination relationship between railway transportation system and open-pit production,a coupling degree model is established under the capacity-coupling theory.This model quantitatively analyzes the coordination level of mine production and transportation systems as well as the effects of subsystems and system parameters on the whole open-pit mining system.Besides,the indices of open-pit mining and haulage equipments,the parameters choice of wagon quantity,load and fluctuation in railway transportation are discussed,and an isometric transformation is applied using an improved efficacy method.Finally,a case study is conducted to verify the model ability in reflecting the real productivity.The results show that compared with expectation,a lower daily average number of wagons has a larger effect on the system coordination level,with only 20% contribution ratio of the minimum value of other indexes;however,the unbalanced factor of trains has a smaller effect on the system coordination.Moreover,the coupling index will be raised by 17% if the daily average number of wagons is increased to 80% of the original plan.