A study on the time-dependent character of surrounding rock deformation of a test tunnel

Since the underground hydro-power station usually has several parallel large caverns and the geological condition is often very complex, a test tunnel is often excavated to measure its deformation that developed with time, by which the initial rock stresses and the time-dependent properties of rock mass can be determined by back analysis, the displacement and stability of the surrounding rock can be estimated. A case study is performed, which shows that the predicted displacements of surrounding rock are close to the measured and the parameters of Kelvin-Voigt model of surrounding rock by the method are approximate to that by using the method in [1]. The Ftest to check the error between measured and predicted values is also performed. The results show that they are close to each other remarkably when the significance level is chosen as 0.05. Therefore, the method can simulate the behavior of surrounding rock very well and can be adopted in practice. (A) "Reprinted with permission from Elsevier". For the covering abstract see ITRD E124500.

  • Availability:
  • Authors:
    • LINDE, Y
    • JIANPING, Y
    • YUEZHAO, W
  • Publication Date: 2004-7

Language

  • English

Media Info

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Filing Info

  • Accession Number: 01011587
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Dec 19 2005 3:19PM