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Dynamic Instability of Tunnel in Blocky Rock Mass

Dynamic Instability of Tunnel in Blocky Rock Mass
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摘要 The displacements and geometry of the rock blocks and the properties of the rock struc-ture play an important role in the stability of tunnels.Based on the key block model,the dynamic instability analysis of underground tunnel subjected to intensive short-time compressional wave was conducted.The instability of the tunnel caused by the spallation and the inertial effect was distin-guished.And the influence of the roof contour curvature of tunnel was also determined. The displacements and geometry of the rock blocks and the properties of the rock structure play an important role in the stability of tunnels. Based on the key block model, the dynamic instability analysis of underground tunnel subjected to intensive short-time compressional wave was conducted. The instability of the tunnel caused by the spallation and the inertial effect was distinguished. And the influence of the roof contour curvature of tunnel was also determined.
作者 戚承志 陈灿寿 钱七虎 罗健
机构地区 Department of Civil Engineering PLA University of Science and Technology
出处 《Transactions of Tianjin University》 EI CAS 2008年第6期457-463,共7页 天津大学学报（英文版）
基金 Supported by Beijing Natural Science Foundation and Key Program of Scientific Planning of Beijing Education Committee (No.KZ200810016007)
关键词 blocky rock mass dynamic instability discontinuity surfaces key block 块状岩体 动态不稳定性 不连续面 建筑施工
分类号 U451.2 [建筑科学—桥梁与隧道工程]
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共引文献22

Transactions of Tianjin University
2008年 第6期

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