基于模糊多准则决策模型的废弃矿井抽水蓄能电站选址研究

Site selection of pumped storage power station in abandoned mines:Results from fuzzy-based multi criteria decision model

抽水蓄能电站建设投资大,对环境、社会、经济和安全要求严格,电站选址面临诸多因素制约。废弃矿井拥有天然高差和空间资源,将废弃矿井改造成抽水蓄能电站,可节约成本、缩短建设工期。本文基于阈值理论提出废弃矿井抽水蓄能电站选址初步筛选模型,运用专家意见与三角模糊TOPSIS决策耦合模型对通过初步筛选的矿井进行综合评价与优化排序,结合可持续发展和资源再利用要求,提出了最佳抽水蓄能电站选址的多阶段决策过程和方法体系。结果表明:选址决策的关键性指标分别为矿井水量、水位差、与电网的距离、地下空间、地震发生频率、地下围岩支护稳定性和当地用电量,矿井本身的自然条件在抽水蓄能电站改造中起决定性作用。备选矿井中石圪节煤矿最适合开展矿后抽水蓄能电站建设。

The construction of Pumped storage power station entails large investment,strict requirements on environment,society,economy and safety,thus its site selection is highly influenced by numerous factors.Abandoned mines have natural elevation difference and space resources,which could save cost and shorten construction period for project modification of abandoned mines into pumped storage power stations.Based on the threshold theory,this paper puts forward the preliminary screening model for the location of abandoned mine pumped storage power station,comprehensively evaluates and optimizes the selected mines by using the coupling model of expert opinion and triangular fuzzy TOPSIS decision-making,and puts forward the multi-stage decision-making process and method system for the location of optimal pumped storage power station in combination with the requirements of sustainable development and resource reuse.The results show that the key indicators of site selection decision are mine water volume,water head,the distance from power grid,underground space,earthquake frequency,underground surrounding rock support stability and local power consumption.The natural conditions of the mine itself play a decisive role in the transformation of the pumped storage power station.Amony the alternative,Shigejie Coal Mine is the most suitable mine for the site of the pumped storage power station.