Abstract: There are a lot of tailings neutralization slags produced by Guizhou pressurized preoxidation beneficiation and smelting production discharge into tailings ponds,which are costly;a large amount of deep resources in Shuiyindong Gold Deposit are in karst confined water,which is threatened by floods.The mining plan is progressing slowly.A large number of tailings neutralization slags produced by pressurized preoxidation are taken as the main materials for grouting water treatment,by adopting neutralization slags grouting treatment and environmental transformation technology,the process parameters and technical indicators of grouting treatment are improved,the cost of grouting treatment has changed from 91.7 yuan/t for strong drainage planned in the early stage to 27.2 yuan/t.In the same time,through the neutralization slags grouting technology and repeated comparison and demonstration of materials and experimental inspections,the ratio of cement to neutralized slag is roughly controlled within 1∶2,and a complete set of preoxidized neutralized slags grouting technology is applied to the karst confined water process system,so as to reduce the cost of production and prevention of water,ensure the proved resources meet the conditions for the safety of ore body mining,solve the technical problems of confined water grouting treatment encountered in the process of resource mining,and realize the succession of mine resources.

Key words: Karst confined water,Tailings neutralization slags,Grouting technology