Practice of irregular jamb exploitation in Anqing copper mine

This paper focuses on the form of ore body and irregular "two steps" of the pillar stope after the exploitation of the two sides of Anqing Copper Mine Deposit stope mining, proposing the solutions of Medium-length Ring Blasting Subdrifting and small aperture "VCR" method, for overcoming the high ratio of traditional drilling cutting mining, low efficiency, labor intensity, poor safety and so on. Besides, the solutions brought the benefits of increasing the high and stable production, ensuring the technical skills, and achieving significant economic effectiveness. Moreover, the methods can also provide a reference for other related coal mining.