Title of article :
Stability analysis of rock blocks around a cross-harbor tunnel using the improved morphological visualization method
Author/Authors :
Wu، نويسنده , , J. and Zhang، نويسنده , , Z.X. and Kwok، نويسنده , , C.Y.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2015
Abstract :
The morphological visualization method is improved by introducing the separating axes method to the element-block aggregation algorithm and the weighted quick-union method to the complex-block construction algorithm to enhance the computational efficiency of BLKLAB (Zhang and Lei, 2013a). The usage and effectiveness of the modified BLKLAB code are demonstrated through a case study of Xiangʹan tunnel in Xiamen City of China. In this case study, the DifFUZZY method was employed to cluster the orientation data and probabilistic analysis was then performed to get a combination of geological and mechanical properties of discontinuities that is most detrimental to the stability of rock blocks and associated ground-supports. Based on these previous analyses, the fracture network was constructed. The stability of rock blocks around the tunnel was then evaluated, using the improved morphological visualization method in conjunction with the stereo-analytical method. A combination of shot concrete and bolts was proposed as the optimal support system, which agrees with the real situation.
Keywords :
Monte Carlo Method , probabilistic analysis , Morphological visualization , Block theory , Discontinuities , DifFUZZY
Journal title :
Engineering Geology
Journal title :
Engineering Geology