Key technologies of shallow resources green mining

Green mining needs coordination of mining and environmental protection,a series of advantages of open-underground mining make it the key to realize the shallow seam resource green mining.Two kinds of mining pattern's mutual interference will cause a series of new technical problems.How to make complementary advantages of open-pit and shaft mining,simultaneously minimizing the mutual interference is a problem needed to solve in open-underground mining.In order to guarantee several open-underground mine's safety mining and achieve good results,we have taken effective measures to solve a series of key problems.