Large deformations in deep tunnels excavated in weak rocks:Study on Y-Basque high-speed railway tunnels in northern Spain

作     者：Cosimo Iasiello Juan Carlos Guerra Torralbo Cesar Torrero Fernandez 

作者机构：IRP biuro projektow sp.z.o.o.al.Jana Pawla Ⅱ 1100-828 WarszawaPoland European University of MadridCalle Tajos/n 28670 Villaviciosa de OdonMadridSpain Ayesa Ingenierıa S.A.Paseo Castellana 9128046 MadridSpain 

出 版 物：《Underground Space》 (地下空间（英文）)

年 卷 期：2021年第6卷第6期

页      面：636-649页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：The Authors do not have any organization to acknowledge 

主　　题：Shales Limonite Squeezing Plaxis Tunnel monitoring 

摘      要：Designing the support system for a deep tunnel in weak rock is always challenging,because a misjudgment of real rock behavior can lead to *** the construction of the Legutiano tunnel,which belongs to the high-speed railway network named Y-Basque in Spain,the measured convergences exhibited large deformations,which were significantly higher than those in the detailed *** first glance,these deformations were associated with squeezing,as the tunnel was excavated in flysch-shales and limonite with a maximum cover of approximately 360 *** aim of this study is to perform a retrofit analysis to compare the most popular empirical and analytical approaches for evaluating the squeezing effect,using geotechnical data pertaining to other tunnels excavated in the same area and in the same geological ***,a non-linear finite element analysis,focusing on time-dependent rock behavior,is conducted to reproduce the convergences measured.