Abstract: An iron ore mine began to bring into production in 1980.Shaft development and open stoping mining method is adopted.Up to now，many goafs of have been formed.The upper goafs of ore body Ⅰ has not been timely treated after the end of stoping，and the goaf has accumulated water，while the lower ore body Ⅲ is in the stoping stage，the stoping process and the remaining goaf may cause disturbance to the upper goaf，which may cause the water in the upper goaf to rush to the stoping areas， and there are potential safety hazards.In order to guarantee the safety of the lower orebody Ⅲ stoping process and solve the security threats，this paper adopts the method of combining field investigation，theoretical analysis，quantitative and qualitative analysis to carry out the study of goaf self-stability analysis，follow-up safety mining area，comprehensive disposal measures.The study results show that the eight independent goafs are temporarily in a relatively stable state，but long time exposure can lead to risk of roof caving.The KQ1# and KQ8# goaf affect the upper goafs area and the remaining goafs will not affect the upper goafs.It can ensure the safety of the upper goafs area and the safety of the follow-up mining work by filling the KQ5#、KQ6#、KQ8# goafs and sealing off the KQ1#、KQ2#、KQ3#、KQ4#、KQ7# goafs.

Key words: Underground mining, Goaf, Open stoping method, Filling, Comprehensive disposal