Abstract: With the mining going deeper, the mining environment will become increasingly worse.It has become urgent to study the mining technology for deep-lying mineral resource and the extraction of large thick broken deep-seated orebodies is now a worldwide challenge.Taking the 1# orebody in Jinchuan No.2 mining section as the case, the two-step stoping scheme with pillars and the continuous stoping scheme without pillars based on the downward mechanized cementing back-filling method are introduced.Their advantages and disadvantages are analyzed, which can be of great reference significance to similar mines.

Key words: Deep mining, Broken orebody, Large-scale mining, Mining method