Investigating ground movements caused by the construction of multiple tunnels in soft ground using laboratory model tests
Investigating ground movements caused by the construction of multiple tunnels in soft ground using laboratory model tests
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DOI：
10.1139/t07-018
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发表时间：
2007-06
影响因子：
3.6
通讯作者：
D. Chapman;S. Ahn;D. Hunt
中科院分区：
文献类型：
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作者：
D. Chapman;S. Ahn;D. Hunt
软土地基中单隧道上方地表移动的预测已经建立，并且可以使用基于高斯曲线的半经验方法进行估计。然而，与紧密间隔的多个隧道，特别是并排（sbs）隧道相关的地面移动的预测还没有得到很好的理解，因此，用于该应用的简单预测方法目前在其准确性方面相当有限。本文介绍了一系列的小规模（1/50）的实验室模型试验（在1克进行）在Speswhite高岭土进行的结果。进行这些测试是为了更好地了解与密集多隧道（sbs）相关的短期地面运动。从这些测试中观察到的地面运动结果显示了许多在已发表的案例研究中观察到的全尺寸特征。这些结果相比，常用的高斯曲线预测方法，并证明潜在的不准确性…
The prediction of the ground movements above single tunnels in soft ground is well established and can be estimated using semi-empirical methods based on the Gaussian curve. However, the prediction of ground movements associated with closely spaced multiple tunnels, in particular side-by-side (sbs) tunnels, is not as well understood, and therefore simple predictive methods for this application are currently quite limited in terms of their accuracy. This paper describes results from a series of small-scale (1/50) laboratory model tests (conducted at 1g) carried out in Speswhite kaolin clay. These tests have been conducted to gain a greater understanding of the short-term ground movements associated with closely spaced multiple (sbs) tunnels. The observed ground movement results from these tests have shown many of the characteristics observed at full-scale in the published case studies. These results are compared to the commonly used Gaussian curve prediction method and demonstrate the potential inaccuracy ...