在‘有色金属’去年第10期上,看到了‘薄矿脈开采中的采准佈置问题’一文,我们认为其中某些论点是不合理的,有的恰好起到了效果的反面,茲根据我们在实际工作中的体会提出一些看法:薄矿脈的产状多是不够正规的,这是与它的成因条件有关系,因为薄矿脈多系裂隙热液充填的原生矿床(中南所有钨脈状矿脈全系如此),它的形状是随着裂隙原有形状为转移的。所以多不正规变化比较复杂,如分支复合、断层交替、大小不均,尖灭再现、倾斜时缓时急甚至反向等现象,因而增加我们对这类矿床的开采复杂化,而对于某些相隣很近而变化又大的矿脈更是一个问题。如采取合采的话,有时贫化率 In the “Nonferrous Metals” last year, we saw the issue of “the problem of the placement of quasi-metals in the mining of thin veins.” We think some of these arguments are unreasonable and some just do the opposite. According to our In practice, some comments are made on the following points: The occurrence of thin veins is often not formal enough, which is related to its genetic conditions. Because of the primary deposits of thin veins and multi-system fissured hydrothermal fluids Like the whole system), its shape is with the original shape of the fracture as the transfer. Therefore, the more informal changes are more complex, such as branch compounding, fault alternation, unevenness of size, sharpness and reappearance, slow or even slowing when tilted, which will increase the complexity of mining for such deposits. For some Adjacent neighbors and changes in the veins is more of a problem. If taken together, sometimes the rate of dilution