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铁路围岩分为几级
更新时间: 2021-01-08 14:41:29  

1、一般把围堰分6个等级,主要用于隧道的开挖。等级越高,施工难度越大。按土的性质分土围堰和岩石围堰。按深度分深埋围堰和浅埋围堰。

2、如果是计算开凿价格的话,级别的划分主要是根据岩石的特征来划分的,根据不同岩性的刚性坚硬度来划分,一般可以分为坚硬-半风化(软坚)-风化(软石)三个等级。当然每一个等级还可以细分围多个等级。

关键词: 铁路 围岩 分为

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