Abstract:Yaogangxian Tungsten Mine since1914mined, up to now, after nearly a hundred years of mining, shallow ore basic have been mined. At present, there are only a small amount of residual ore. The central ore bodies especially most easily mining veins also has been removed. Considering the future development of the mine, the problem to be solved is the deep inclined and extra-narrow difficult-mining ore. But the original mining method is not applicable to such difficult-mining ore body. Therefore, under ...