Safety Evaluation and Nonlinear Simulation in Soft Argillaceous Shale Tunnel
A deformation analysis and safety evaluation of the soft argillaceous shale tunnel has been presented based on nonlinear criteria. Details regarding the numerical implementation of Guan Kouya tunnel were presented by using the FLAC3D program, and a comparative analysis was conducted with the data in site. Some results are perceived as follows: The whole initial support is almost in a yield state before the construction of the secondary lining, which takes the form of the tension yield from the middle to the bosom of the arch, whereas it appears as the so-called shear band in the 3-4 m near the excavating surface and the arch skewbeck; Some assistant methods, especially the anchor should be applied to enhance the steady stability due to the big compressive stress located at the arch skewback of the two sides in the tunnel. This research is useful to supervise fast excavating and to secure the safety of the tunnel
soft argillaceous shale tunnel deformation nonlinear
HUANG Linchong XU Zhisheng PENG Limin
School of Civil and Architectural Engineering,Central South University,Changsha 410075,Hunan,China;D School of Civil and Architectural Engineering,Central South University,Changsha 410075,Hunan,China
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
2221-2226
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）