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一、前言开采急倾斜极薄矿脉时影响选择采矿方法的主要因素有:1.矿石和围岩的稳固程度;2.矿脉的米·克/吨值(或米百分值)及围岩品位;3.矿脉的类型(单一脉、相邻平行细脉、细网脉带等)和矿脉的分枝复合、膨缩弯曲、错动以及矿岩接触情况。从开采技术角度来分析:矿石和围岩稳固或较稳固,围岩含矿或矿岩接触不明显、矿脉的分枝复合、膨缩弯曲现象明显的单脉或相邻平行细脉、细网脉带一般适合于浅孔留矿法(包括留
I. INTRODUCTION The main factors influencing the mining method selection when mining very steep ultrathin veins are: 1. the stability of the ore and the surrounding rock; 2. the m / g (or m percents) of the veins and the grade of the surrounding rock ; 3. The types of veins (single veins, adjacent parallel veins, fine veins, etc.) and the branching of veins, swelling and bending, dislocation, and contact with ore. Analysis from the mining technology point of view: the ore and surrounding rock solid or solid, surrounding rock ore or rock contact is not obvious, the branching of vein branch, swelling and bending obvious single or adjacent parallel veins, fine mesh Veins are generally suitable for shallow hole retention method (including stay