Long‐term deformation of mountain tunnel lining and ground under swelling rock condition
Long‐term deformation of mountain tunnel lining and ground under swelling rock condition
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DOI：
10.1002/geot.201500024
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发表时间：
2015-10
期刊：
影响因子：
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通讯作者：
N. Isago;K. Kawata;A. Kusaka;T. Ishimura
中科院分区：
文献类型：
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作者：
N. Isago;K. Kawata;A. Kusaka;T. Ishimura
为了监测在役公路隧道的变形，需要定期进行检测，并根据需要采取相应的措施。然而，由于永久性衬砌的开裂和路面的隆起经常发生，因此很难从施工和服务阶段获得的数据来评估这些变形特征的发展。本文根据6年的现场测量结果和数值分析，讨论了变形机理和对策的效果。利用钻孔数据分析了隧道变形与缺陷发生的关系。本文还讨论了地基特征呈膨胀状态时隧道变形的机理，以及衬砌荷载与支护措施之间的关系。
To monitor deformation in a road tunnel in service, periodical inspections are performed and countermeasures are taken as needed. Cracking of the permanent lining and heaving of the road surface often occur, however, so it is difficult to assess the development of such deformation features from data acquired during the construction and service stages. In this paper, the deformation mechanism and the effect of countermeasures are discussed based on the results of in situ measurements over a six‐year period and of numerical analysis. The relationship between tunnel deformation and the occurrence of defects is examined using boring data. The mechanism of tunnel deformation when the characteristics of the ground indicates a swelling condition, and the relationship between the load acting on tunnel lining and the behaviour of countermeasures are also mentioned.