Deformation behavior of discontinuous rock due to large-scale vertical excavation: comparison between prediction by numerical analysis and measurement
This paper describes the validity of the Multiple Yield Model (MYM) based on the comparison between the prediction by MYM analysis and the measurement results of two cases history about the large vertical excavation about 30m in depth and 100m in width for nuclear power plants. MYM is a kind of finite element method constituted the mechanical properties of intact rock and discontinuity systems in rock mass, and can be analyzed the non-linearity of deformation under loading and unloading stress paths. For analyzing, the geometrical model of rock mass were determined from test adit and borehole observations about the discontinuity conditions such as orientation, spacing, persistence, and the physical parameters were determined by laboratory test using core specimens and also considering scale effect. As the results of MYM analysis, both of the deformation mode and displacement were well corresponded to the measurement and we have been confirmed that the actual behavior of discontinuous rocks can estimate by MYM in practical accuracy .
N.Iwata T.Sasaki J.Yosida K.Sasaki R.Yoshinaka
Chuden Consultants Co.,Ltd., Hiroshima, Japan Suncoh Consultants Co.,Ltd.,Tokyo, Japan Geosphere Research Institute,Saitama University,Saitama ,Japan
国际会议
香港
英文
1-5
2009-05-19（万方平台首次上网日期，不代表论文的发表时间）