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一、总工程师的技术指导及经常要考虑的问题(一)对地下资源的开采必须掌握由上向下,由二翼向中间进行开采的顺序。因此,勘探资料必须完整,水平沿脈探矿坑道应开到尽端。总工程师根据这些地质勘探资料与每年要求之出矿量,划分出采矿区域,计算生产效率,采取集中探准的办法,按设计进行开采,这是技术领导者的主要责任。(二)采矿要集中在一个中段进行开采,这个技术思想是由开采顺序而来的。每个矿山开采应当是采取退却式的开采方法,在退却式的开采下,就应当急速的给回采矿柱创造有利条件。因此一个矿山的开采,应分四个不同的作业中段:①回采矿柱中段;②采矿中段;③采准中段;④开拓中段。而上部同采矿柱区段与下部采矿区段之水平超前距离应为50公尺,60°的安息角。(其超前距离与安息角是根据岩质情况与中段之距离,矿脈之宽狭、矿体倾斜角及采矿方法而确定之)。这样既可加速矿柱之回采,又不影响采矿的正
First, the chief engineer’s technical guidance and often to consider the problem (a) of the underground resources exploitation must grasp from top to bottom, from the second wing to the middle of the order of mining. Therefore, the exploration data must be complete and the level should be exhausted to the extreme along the pyroclastic tunnel. Based on these geological prospecting data and the amount of ore released each year, the chief engineer is responsible for allocating the mining area, calculating the production efficiency, and adopting the method of centralized exploration and mining according to the design. (B) Mining should be concentrated in a middle section of mining, the technical idea is from the mining order. Each mining operation should adopt a withdrawn mining method, which should be expeditiously returned to the mining column under retreating mining. Therefore, the mining of a mine should be divided into four different medium-sized sections: ① middle section of mining pillar; ② middle section of mining; ③ middle section of mining; ④ middle section of exploration. The upper part of the mining column section with the lower part of the mining section of the horizontal advance distance should be 50 meters, 60 ° angle of rest. (The lead distance and the angle of rest are determined by the distance between the rock mass and the middle part, the width of the veins, the inclination angle of the ore body and the mining method). This will speed up the pillars of mining, mining does not affect the positive