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- W2377227611 abstract "In the paper, the granular model which contains interface and matrix was introduced, considering the softening behavior of cohesion parameters. In the calculation of FLAC-3D, according to the evolution and distribution of shear strain increments, minimum principal stresses and in surrounding rock of a circular tunnel after excavation. The numerical simulation based on equilibrium shows that higher shear strain increments form an intersecting shear bands network and extends to the depth of the surrounding rock; the phenomenon of the regions with higher minimum principal stresses separated by the regions without higher minimum principal stresses, and the spacing is uniform. With an increase of the tunnel diameter, the number and length of shear bands increases; the annular regions with higher and lower minimum principal stresses get more obvious. At a high confining pressure,clear and ordered distribution of what mentioned above are found on diametrically apposite of the tunnel, and the results are similar to the zonal disintegration phenomenon found in situ." @default.
- W2377227611 created "2016-06-24" @default.
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- W2377227611 date "2013-01-01" @default.
- W2377227611 modified "2023-09-23" @default.
- W2377227611 title "Numerical simulation of roadway surrounding rock deformation and destruction" @default.
- W2377227611 hasPublicationYear "2013" @default.
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