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Xu Y.F.,State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering | Xu Y.F.,Hunan hydro power and design institute | Shen Z.Z.,Hohai University | Shao C.X.,State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering | Shao C.X.,Hohai University
Advanced Materials Research | Year: 2013

Based on the actual conditions of the project and related experience, the seepage model diversion tunnel and its surrounding rock mass was built to analyze its seepage stability. The field was calculated by using finite element method(FEM) and cut-off negative pressure method. Two typical cross-sections and working conditions were chosen to evaluate the seepage stability of the surrounding rock mass. According to the results, the seepage gradient is larger when one tunnel is filled with water while the other is empty. The maximum seepage gradient is less than the allowable seepage gradient, so the surrounding rock mass of the diversion tunnel can meet the demand of seepage stability. © (2013) Trans Tech Publications, Switzerland. Source

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