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本文对当前国内矿山使用的下盘漏斗崩落法进行了评叙。文中指出使用该法往往使巷道掘进、支护和维修费用及其材料消耗急据增加,以及引起漏斗间的残柱和残矿的较大损失。笔者认为,应进一步研究试验和寻求降低采切比,使用无漏斗分段崩落法。在生产实践中、根据具体条件,分别选用分段平巷全面崩落法,分段平巷倾向分段崩落法,分段上山走向分段崩落法以及分段上山窄分段崩落法。
In this paper, the current domestic mining use of under-tray funnel caving method was reviewed. The article pointed out that the use of this method often makes roadway tunneling, support and maintenance costs and material consumption according to an urgent increase, as well as the funnel caused by the residual column and residual ore greater loss. I believe that further research should be conducted and seeking to reduce the cut-off ratio, the use of non-funnel sub-caving method. In production practice, according to specific conditions, respectively, the use of sub-level roadway full caving method, section laneway caving subsidence method, the sub-section uphill to subsidence caving and sub-uphill narrow caving method.