Abstract: Combining the occurrence characteristics of the gently inclined mediumthick ore body in a certain mining area，comparing the economic and technical conditions of two mining methods,the mining method suitable for the ore body is selected as the subsection empty field with flat bottom structure and subsequent filling mining method，and the structural parameters of ore block and stope mining technology are introduced in detail.In order to reduce the engineering quantity of outofpulse mining and facilitate the passage of trackless equipment in the stope,the uphill from the ore is in a pseudotilted form,and most of the mining and cutting works are arranged in the veins.Compared with the subsection empty field subsequent filling mining method with a bottom trench,the cuttingtocut ratio is reduced by about twothirds,and the dilution rate is also reduced by about onehalf,with significant economic benefits.It has guiding significance for the mining of similar ore bodies.

Key words: orebody gently inclined medium thick orebody,subsequent filling method of subsection empty field with flat bottom structure,ratio of extractiontocut,dilution rate