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一九六四年,我公司某队在某金矿合矿大断裂破碎带中,开凿了2×1.8的小断面沿脉平巷2500米。在施工中突出的困难是顶板岩石破碎,经常冒顶。在东沿脉平巷中一次冒顶就三天没进尺,多推渣200车左右;22坑雨后一次冒顶,流砂进入巷道,阻塞20米,冒空距离高达12米,地表下陷,一星期没有进尺。针对以上情况,我们采取了一些措施,基本上克服了施工的困难,现把有关资料整理出来,以供同志们参考。
In 1964, a certain team of our company dug 2 × 1.8 small inclined plane along 2,500 meters in a large fault zone of a gold mine. Prominent in the construction of the rock is broken roof, often fall to the top. In the east along the lanes in a fall in the top three days did not enter the ruler, pushing more than 200 cars slag residue; 22 pit after a fall, the sand into the roadway, block 20 meters, take the distance up to 12 meters, the surface subsidence, a week without The footage. In view of the above, we have taken some measures to basically overcome the difficulties of construction. We have now sorted out the relevant information for reference by our comrades.