Study on mining experiment of layer falling in one difficult tin orebody

Focus on the complicated geologic conditions, low-grade reserves and difficult mining conditions of one soft tin orebody, We succeed in the experiment of soft-rigid false bottom layer falling combining natural conditions with on-site practice. At present, this mining method is wholly spreaded and applied in this mine as a result of good adaptability, security and good technical targets etc, at the same time, good benefits in economy are gained.