The application of TOPSIS method to deep mine water environmental quality assessment

Effective use of resources is an important issue for sustainable development of mining. The quality assessment and classified use of deep mine water is an important way to ease mine water crisis. With mining depth increasing in Huize lead-zinc mine, water inflow is significantly increasing. In this paper, deep mine water environmental quality is assessed by TOPSIS method and comprehensive index method. The results show that the groundwater quality of deep middle is good, which is I III kind of water. In addition, according to monitoring data of water inflow over the years, the available and stable minimum extraction volume of deep mine water is 6500-11500 m³/d. It can be considered for mine filling water, acquisition factory water, municipal water and domestic water.