Investigation and assessment on mountain tunnels and geotechnical damage after the Wenchuan earthquake
Investigation and assessment on mountain tunnels and geotechnical damage after the Wenchuan earthquake
复制标题
汶川地震后山岭隧道及岩土损坏调查与评估
DOI：
10.1007/s11431-009-0054-z
复制
发表时间：
2009-02-01
期刊：
影响因子：
--
通讯作者：
Yuan Song
中科院分区：
文献类型：
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作者：
Wang ZhengZheng;Gao Bo;Yuan Song
2008年5月12日，四川东部中国西部地区汶川镇发生8.0级强烈地震。5月18日地震发生后，西南交通大学组织灾情调查组赶赴灾区，开展灾情调查和信息数据收集工作。本文概述了这次地震灾害对山岭隧道和岩土工程的调查结果。对隧道进行了系统的勘察，包括地质条件、设计文件、施工和维护记录，并根据裂缝的宽度和长度、隧道上方斜坡的稳定性和地下水涌出情况对所调查隧道的破坏程度进行了评估。结果表明，山岭隧道的破坏主要集中在滑坡和崩塌较大的洞口，隧道内部的破坏以断层位移为主。希望通过本文的分享，能够提高山区隧道的抗震性能，完善抗震设计和施工程序。
On May 12, 2008, a strong earthquake with a magnitude of 8.0 (Ms) struck Wenchuan town, in the eastern Sichuan area of west China. Following the earthquake on May 18, the Southwest Jiaotong University organized a damage survey team and dispatched it to the affected area for the investigation into the damage and collection of information and data. This paper outlines the findings of this investigation on the earthquake disaster to mountain tunnels and geotechnical engineering. The systematic investigation, involving geological conditions, design documents, construction and maintenance records of the tunnels, has been conducted and the degree of damage to investigated tunnels has been assessed according to the width and length of cracks, the stability of the slope above the tunnel, and the condition of the groundwater inrush. The results show that the major damage of the mountain tunnels was mainly concentrated in the tunnel portals due to widespread landslides and rockfalls, and the inner part of investigated tunnels suffered moderate damages mainly due to fault displacements. It is hoped that the information shared herein could enhance the outstanding of seismic behavior of mountain tunnels and improve seismic design and construction procedures.