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我矿多年采用浅孔留矿法和留矿-全面法联合开采。起初都采用一般的留矿法底部结构,在采场大量放矿时,木漏斗由于大块堵塞,二次破碎频繁,损坏严重。 1959年以来,我矿逐步进行了底部结构改革,采用了把切割与运输水平合为一层的平底结构;或有漏矿口-电耙道的出矿结构。本文主要介绍漏矿口-电耙道出矿结构(见下图)。漏矿口的布置受矿块地质条件的影响,有大有小,大至沿矿房长度全面上挑为一个,间或保留1～2个矿柱;小至每隔5米左右开凿一个1.2×1.8米的漏矿口,与
Mine for many years using shallow hole stay mining method and stay - a comprehensive mining method. At the beginning, the general structure of the bottom of ore retention method was adopted. When a large amount of ore was drained in the stope, the wooden funnel was severely damaged due to large blockage and frequent secondary crushing. Since 1959, the mine has undergone a structural reform of the bottom gradually, using a flat-bottom structure that combines cutting and transport levels, or a mine-out structure with electric mine harrows. This paper introduces the mine mouth - electric rake Road ore structure (see below). The layout of the mine mouth by the ore block geological conditions, ranging from large and small, along the length of the mining room to pick a comprehensive, or keep 1 to 2 pillars; small to every 5 meters to dig a 1.2 × Leakage 1.8 meters, with