Abstract: In the mining of gently inclined to inclined medium thick ore body,there are many disadvantages,such as difficult ore haulage,large ratio of extractiontostope drift,large loss and dilution.Especially in the lowgrade mine of this type of ore body,how to reduce the mining cost and improve the mining efficiency is the most important direction.Through the optimization of mining and cutting engineering layout,improvement of mining equipment,and application of trackless equipment,it has successfully reduced mining costs,increased the selection grade,and achieved good economic benefits,which can provide referenceand mining experience for similar conditions mine.

Key words: Gently inclined mediumthick ore body,Mechanized mining,Mediumdeep hole mining,Sublevel open stope method