Study on Unstable Seepage Field Characteristic and Seepage Control Measures of Wutagou Floodway

2010 ◽  
Author(s):  
Zhenzhong Shen ◽  
Chenliang Li ◽  
Liqun Xu ◽  
Ying Ma
Keyword(s):  
Control Measures ◽  
Seepage Field ◽  
Field Characteristic ◽  
Seepage Control

scholarly journals Assessing the Efficiency of Seepage Control Measures in Earthfill Dams

2020 ◽  
Vol 38 (5) ◽  
pp. 5667-5680
Author(s):  
Ali Torabi Haghighi ◽  
Anne Tuomela ◽  
Ali Akbar Hekmatzadeh
Keyword(s):  
Control Measures ◽  
Seepage Control ◽  
Earthfill Dams

Three-Dimensional Seepage Analysis and Seepage Control System Optimization of a Hydropower Project

2012 ◽  
Vol 468-471 ◽  
pp. 2433-2436
Author(s):  
Wen Ting Zhan ◽  
Qing Xu
Keyword(s):  
Control System ◽  
Three Dimensional ◽  
System Optimization ◽  
Field Analysis ◽  
Hydropower Project ◽  
Seepage Field ◽  
Seepage Analysis ◽  
Dam Foundation ◽  
Seepage Control ◽  
Water Head

The study is conducted for the 3-D seepage field analysis and the seepage control measurements optimization of a hydropower project, which is located in Sichuan Province, China. The seepage control measurements are introduced in this paper. An equivalent method is adopted to simulate drainage holes and the approach of determining equivalent permeability coefficient is presented. The 3-D seepage field with seepage control system is analyzed comprehensively by the water head contours, uplift on the dam foundation, and so on. The necessities of setting the grouting curtain and the drainage holes are discussed respectively. Further the optimal design of the grouting curting and drainage holes of the dam foundation is studied. The results show that special attention should be paid to ensure the well-operation of the seepage control system and the optimization of decreasing the depth of the drainage curtains and grouting curtains properly can be considered.

Seepage Field Study of Xiaowan Hydropower Project

2011 ◽  
Vol 243-249 ◽  
pp. 4501-4505
Author(s):  
Yong Xiang Wang ◽  
Qing Xu ◽  
Ji He ◽  
Sheng Hong Chen
Keyword(s):  
Control System ◽  
Three Dimensional ◽  
Arch Dam ◽  
Hydropower Project ◽  
The Finite Element Method ◽  
Seepage Field ◽  
Dam Foundation ◽  
Initial Flow ◽  
Seepage Control ◽  
Geological Conditions

The Xiaowan Hydropower Project is located in the middle and lower reaches of the Lancang River in Yunnan Province, China. The arch dam of this project, with a height of 294.5m, is by far the highest dam of its type that has been completed in the world. The great water potential makes it necessary to assess the seepage behavior in the dam-foundation system. Due to the complexity of geological conditions and seepage control system, the research is full of challenges. In this paper, the finite element method (FEM) is adopted to simulate the three-dimensional seepage field. The initial flow method and the boundary pre-adjustment method are combined to obtain the seepage free surface and overflow surface under complicated boundary conditions. The hydraulic potential contours, seepage gradient, drainage discharges, and so on, are all analysed and the results show that the seepage control system is reasonable and effective. Furthermore, the results of the seepage field can provide suitable seepage load in the stress-strain and stability analysis for the dam-foundation system of Xianwan. At present, the project is in good operation.

Study on Seepage Control in Complicated Hydrogeological Conditions on the Right Bank of JinPing-I Hydropower Station

2014 ◽  
Vol 686 ◽  
pp. 132-141
Author(s):  
Yan Wu
Keyword(s):  
Three Dimensional ◽  
Control Measures ◽  
Hydropower Station ◽  
Element Analysis ◽  
Underground Powerhouse ◽  
Factors Affecting ◽  
Seepage Control ◽  
Hydrogeological Conditions ◽  
Jinping I Hydropower Station ◽  
The Right

With consideration of the special hydrogeological conditions and layout characteristics of the hydraulic structures, the seepage control measures of dam abutment and underground powerhouse on the right bank of JinPing-I hydropower station is drawn up. Based on the three dimensional finite element analysis of seepage control with dry area virtual flow constant mesh analysis method, the rationality of the seepage control measures of dam abutment and underground powerhouse has been verified and the key factors affecting the effect of seepage have been compared. In combination with the curtain of dam abutment, the curtain of underground powerhouse is reasonable. The results showed that the steel liner of penstock after the curtain is necessary.

Optimization Study on Drainage System for Canal of Middle Route Project of SNWT in Expansive Soil Area with High Groundwater Level

2014 ◽  
Vol 580-583 ◽  
pp. 2023-2028
Author(s):  
Hao dong Cui ◽  
Jia Fa zhang ◽  
Guo Sheng zhu ◽  
De Xu Wu ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Water Level ◽  
Groundwater Level ◽  
Water Pressure ◽  
Drainage System ◽  
Expansive Soil ◽  
Control Measures ◽  
Seepage Field ◽  
Finite Element Technology ◽  
North Water ◽  
Soil Area

The seepage field regulation is important for the stability canal liner plate and slope for along the Middle Route of the South-to-North Water Transfer Project, especially for stretches excavated in expensive soil area with groundwater level. In order to analyzing the rationality and efficiency of seepage regulation measures comprehensively, a typical section was modeled, and the seepage field was simulated with the 3D finite element technology. The distribution of seepage field was analyzed and the seepage control measures were compared. The results show that water pressure on the underside of canal pavement would be reduced significantly by the measures, such as the measure of drainage cushion with drainage holes which open just when ground water level is higher than the canal water level, the measure with drainage cushion replaced by the drainage board. The differences among the two kinds of measure were compared. Their application conditions were discussed and proposed.

Application of AutoBank in the Dike Reinforcement Calculation of Lower Qinhe River

2014 ◽  
Vol 638-640 ◽  
pp. 766-769
Author(s):  
Wen Juan Cui ◽  
Li Qin Li ◽  
Wei Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Control Measures ◽  
The Finite Element Method ◽  
Reinforcement Scheme ◽  
Important Method ◽  
Seepage Control ◽  
Before And After ◽  
Reinforcement Design ◽  
River Dike

Calculation of seepage stability is important method in selection and justification of reinforcing dike seepage control measures. In the reinforcement design of the Qinhe river dike downstream, the finite element method of AutoBank is used to calculate the seepage stability of the dike reinforced before and after, and an economic and reasonable reinforcement scheme is selected then.

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