Papers by Author: Min Zhu

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Authors: Rui Hong Wang, Yu Zhou Jiang, Min Zhu, Yu Wang
Abstract: Based on the results of triaxial unloading tests,the stress-strain characteristics and failure characteristics of rock mass have been discussed. Considering unloading degree as an important parameter,an elastic-brittle-plastic mechanical model has been established according to the unloading stress condition,which considers that unloading yield function varies linearly between Griffith with Hoek-Brown criterion after rock mass receives plastic deformation caused by unloading. Taking jinshajiang excavation slope of a hydropower station as engineering background, the three-dimensional continua fast Lagrangian analysis software FLAC3D is employed in the slope stability analysis under the excavation, and the distribution characteristics of the slop deformation is studied.
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Authors: Le Hua Wang, Jian Wu Li, Ying Xia Li, Jia Cheng Wang, Jian Rong Li, Min Zhu
Abstract: After the excavation of abutment slope, the stress redistributed and the rock mass quality degradation damaged. According to fore-and-aft change of stresses for excavation, the authors divided excavation area and chose suitable mechanical parameters of rock mass for different excavation area. We used theory and methods of unloading rock mass mechanics and used elastic-plastic viscous damage mechanics model to give 2-D finite element analysis of stress and strain for typical profiles. And then we analyzed the changes of stress and deformation of the slope at nature and unloading conditions, analyzed deformation and stability at different reinforcement areas of the slope to choose reasonable reinforcement area. Strengthening plans of rock mass are analyzed and compared to choose reasonable reinforcement plan. The research results herein can offer beneficial reference for the design and the construction engineers.
2583
Authors: Jie Liu, Shi Wei Luo, Liang Peng Wan, Min Zhu
Abstract: According to the research of geology condition in Ge-he-yan's back rock mass slope,set up the homologous engineering geology model, carried on parts of qualitative analysises, combined with numerical analysis method based on the unloading rock mass theory, gave the quantitative analysis of the engineering geology model, then got the special deformation mechanism of this slope.
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