Abstract: The technical problems of the Gaoyang iron mine to solve complex water-rich deposits efficient low-cost mining were introduced.Technology of multilayer bit orebody disc area integration tiered mining cemented filling mining method,high viscous fine grain tailings cemented filling,local curtain note pulp seal locking,rock deformation damage monitoring and the pressure monitoring, and large displacement directed drilling and grout sealing of underground water were adopted.Monitoring and detection methods, water technology and the ore body extraction system were integrated.It improves the recovery of resources, effectively control the roof strata movement, to avoid surface subsidence caused by underground mining and safety risks.Finally, it achieves mine orebody recovery the body of the safe and efficient mining.

Key words: Complex and rich water, Cement filling, Curtain Grouting, Directional, Pressure monitoring