Rock Mechanics and Rock Engineering

, Volume 18, Issue 1, pp 1–15 | Cite as

Analyses of disking phenomenon and stress field in the region of an underground powerhouse

  • Weishen Zhu
  • Guangyu Li
  • Kejun Wang


The large underground power chambers of Ertan Hydropower Station will be built near the abutment on the left bank in a region with high initial stresses. In this paper, a statistical analysis is presented for the phenomenon of core disking in the dam site. On the basis of a number of stress measurements, the region of the river valley could be divided into three different geostress zones. It is shown that there exists a rather high horizontal stress of up to 30 MPa, and even over 60 MPa at the bottom of the river bed. A least square method has been introduced to get a continuous field of stress, which approximates the variable measured stress data.


Civil Engineer Stress Field River Valley Initial Stress Measured Stress 
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Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • Weishen Zhu
    • 1
  • Guangyu Li
    • 1
  • Kejun Wang
    • 1
  1. 1.Institute of Rock and Soil MechanicsAcademic SinicaWuhanChina

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