一、前言在矿石和围岩稳固到中等稳固,矿体产状比较规整的急倾斜薄矿脉有色金属地下矿山开采中,浅孔留矿法是应用最广的采矿方法。浅孔留矿法工艺简单,易于掌握,我国钨矿急倾斜薄矿脉单脉开采几乎全部采用此 I. INTRODUCTION In the mining of non-ferrous metal underground mines in the stable ore and surrounding rock with relatively regular ore bodies and steeply inclined thin veins, the shallow hole retention mining method is the most widely used mining method. Shallow hole stay mining method is simple, easy to grasp, our country tungsten oblique steep thin vein pulse single-pulse mining almost all use this