摘要
根据软弱岩体中起主要作用的影响因素，将软弱岩体分为软弱型、破碎型、软弱破碎型、高应力型和膨胀型等五种。给出了相应的分类指标及其与《工程岩体分级标准》（国家标准）中参数Ｑ的对应值，以及不同类型软岩隧道围岩变形定性规律和失稳规律，有助于正确及时地对软弱岩体稳定性作出评价。
Based on the main effcting reason, the soft rock can be classed into five classifications, i.e. the weak rock, fragmental rock, weak and fragmental rock, swelling rock and high stress rock. The classification indexes and corresponding Q value of Standard for engineering classification of rock masses of each soft rock classification are given in this paper. The deformation of each soft rock tunnels is also analysed.
关键词
软弱岩石
围岩分类
软岩隧道
围岩变形
soft rocks, rock classification, soft rock tunnels, surrounding rock deformation
