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薄矿脈矿床的(厚度小于0.7～0.8公尺)特点是:产狀及埋藏条件复杂、厚度小、分支复合現象普遍、接触面不够明显、圍岩矿化不連續、以及品位分佈不均匀等等。因此,所使用的采矿方法与厚矿体显著不同。在开采矿石过程中,它必須部分或大量地采掘圍岩,貧化率远高于厚矿体,而劳动生产率低于厚矿体。在資本主义国家,一般都偏重于厚矿体开采,对这种类型矿床采矿方法的发展是极其緩慢的,原則
The characteristics of the thin veins deposit (less than 0.7-0.8 m in thickness) are that the occurrence and burial conditions are complex, the thickness is small, the branching complex phenomenon is common, the contact surface is not obvious enough, the surrounding rock mineralization is not continuous, and the grade distribution is not uniform Wait. Therefore, the method of mining used is significantly different from that of thick ore bodies. In the process of ore exploration, it must excavate the surrounding rock in part or in large amount, with the depletion rate far higher than that of the thick ore body and lower labor productivity than that of the thick ore body. In capitalist countries, the general emphasis is placed on the mining of thick ore bodies, and the development of mining methods of this type of deposit is extremely slow. The principle