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相邻急倾斜薄矿脉的特点,就是相邻矿脉间距较近,一般为1～4米左右;个别达8米;矿体厚度一般为0.05～3米不等;倾角在60～80°左右。此类薄矿脉常见于中南地区的钨、锡矿山以及云南的某铜矿。目前对此类矿脉无论采取分采或混采,均存在一些问题。 1.对于间距2～6米的矿脉,采用分采时,不仅保留平巷顶柱、增大采切工程量和架设平巷假顶或加强支护,而且有时在相邻平巷掘进中突然被打穿,影响安全生产。
The characteristics of the adjacent steeply dipping thin veins are that the distance between adjacent veins is relatively close, usually about 1 to 4 meters; the individual reaches 8 meters; the thickness of the ore body generally ranges from 0.05 to 3 meters; and the dip angle is about 60 to 80 degrees. Such thin veins are common in the central and southern regions of tungsten, tin mines and a copper mine in Yunnan. At present, no matter whether the ore veins are divided or mixed, there are some problems. 1. For ore veins with spacing of 2 ~ 6 meters, when adopting sub-mining, not only the top pillar of the drift is reserved, but the amount of cutting and cutting works and erecting alley false roof or reinforcement support are increased, and sometimes suddenly Been punctured, affecting the safety of production.