Abstract
In order to understand the two-way coordination of mine water supply and demand in Ningdong coal base, the contradiction between water supply and demand in this area will be solved to some extent. Based on the theory of water resources balance analysis, this paper establishes a two-way coordinated evaluation index system for mine water supply and demand based on survey data. The analytic hierarchy process and entropy method are used to determine the weight of evaluation index. The TOPSIS method is used to evaluate Ningdong coal base Yinchuan, Shizuishan, Lingwu and Wuzhong. Regional mine water supply and demand two-way coordination. The results show that under the current mining mode, the two-way coordination of demand and supply of mine water in Yinchuan area of Ningdong coal base is the best, followed by Lingwu, Wuzhong is worse, and Shizuishan is the worst.
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