双护盾TBM施工隧洞围岩分类方法及应用  

Application of Rock Mass Classification in Double Shield TBM Construction

作　　者：袭著晖 鲁成勃 王彦峡[2] 章跃林[2] 

机构地区：[1]新疆伊犁河流域开发建设管理局,新疆伊犁835000 [2]中水北方勘测设计研究有限责任公司,天津300222

出　　处：《土工基础》2014年第3期117-119,共3页Soil Engineering and Foundation

摘　　要：针对引水隧洞围岩,在现有规范关于隧洞围岩分类基础上,提出了围岩分类新方法,综合考虑TBM掘进机掘进参数变化、围岩与护盾(管片)之间的间隙、出渣量、弃渣的块径、渣块形状、百分量、渣中刀具破岩新鲜面与围岩中结构面的比例、渣中软硬岩比例等因素,应用于达坂引水隧洞的围岩分类,所提出的方法具有重要的工程应用价值。Based on the current code defined rock mass classification, a new classification method for a water tunnel excavation by using double shield TBM method is proposed in this paper. The new classification method considers the variation of the excavation parameters in the TBM; gap between the surrounding rock mass and the lining; quantity, shape and size of the excavated materials; percentage of the of the structural plane to the machine broke rock fragments; ratio of the soft to hard rock fragments in the excavated materials. This new classification method was used in the Daban Water Diversion Tunnel excavation project.

关 键 词：双护盾掘进机 引水隧洞 围岩分类 

分 类 号：TU452[建筑科学—岩土工程]