Method for efficient section-merging mining of steeply inclined ore body

The invention discloses a high-dipping ore body section merging efficient mining method, which comprises the following steps of: performing section merging on a bottom chamber (12) and an upper chamber (15) of two middle sections in the same area in the vertical direction of an ore body, and arranging upward fan-shaped holes (10) in a bottom rock drilling roadway (9) at the lower part of the bottom chamber (12); a large vertical downward hole (14) of the upper chamber is formed in a top drilling chamber (16) located at the top of the upper chamber (15), the undercut ore collection trench (7) and the ore removal linkage roadway (8) of the bottom chamber (12) are utilized, trackless equipment is adopted for intensively and intensively removing ore in the ore removal linkage roadway (8), and residual ore bodies in the undercut ore collection trench (7) are subjected to ore removal through a remote control carry-scraper. A plurality of middle sections in a mining area can be combined, so that the mining preparati