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以攀钢白马铁矿一期工程1600主平硐的开挖为例,介绍了在软弱破碎岩层中大断面隧道的施工方法及注意事项。
Taking the excavation of 1600 main adit of Baima Iron Mine Phase I Project in Panzhihua Iron and Steel, for example, the construction methods and precautions of large cross - section tunnel in soft and broken rock are introduced.