scholarly journals Study on the seepage control effect for the dam foundation of CHIPWI hydropower Station at upper stream IRRAWADDY RIVER

2019 ◽  
Vol 304 ◽  
pp. 022001
Author(s):  
Hao dong Cui ◽  
Zhi Wang ◽  
Wei Zhang ◽  
Qin hua Wu
Keyword(s):  
Hydropower Station ◽  
Control Effect ◽  
Dam Foundation ◽  
Seepage Control

Research on the Optimization of Dam Foundation Seepage Control System

2012 ◽  
Vol 594-597 ◽  
pp. 1143-1148
Author(s):  
Jun Wang
Keyword(s):  
Control System ◽  
Optimization Design ◽  
Hydropower Station ◽  
Sand Layer ◽  
Dam Foundation ◽  
Stage Design ◽  
Processing Scheme ◽  
Seepage Control ◽  
Curtain Grouting ◽  
The Right

The starting time of Dragonite hydropower station in Dadu River Sichuan delayed, which led to the depth of the cofferdam cut-off wall reduced in actual construction. In order to adapt to this situation, it’s necessary to optimize the processing scheme of sand layer dam foundation which is put forward in the feasibility study stage. Combined with the characteristics of engineering, considering to reduce or cancel the curtain grouting in coarse grain granite foundation of riverbed on the right bank in the feasibility stage design, this paper is aimed to study on the optimization design of Dragonite hydropower station dam foundation. The paper has not only a great guiding significance in engineering construction process, but also gives references to the similar earth-rock dam project for treatment of sand layer dam foundation and the arrangement of dam foundation seepage control system.

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.

Analysis for the Seepage Stability of the Upstream Cofferdam of One Hydropower Station

2013 ◽  
Vol 441 ◽  
pp. 286-290
Author(s):  
Yu Lin Yuan ◽  
Yun Feng Peng
Keyword(s):  
Safety Factor ◽  
Theoretical Basis ◽  
Circle Method ◽  
Control Design ◽  
Hydropower Station ◽  
Software Analysis ◽  
Seepage Control ◽  
Geological Conditions ◽  
The Stability

According to the geological conditions of upstream cofferdam and foundation of the hydropower station, analysis for the seepage of the upstream cofferdam used SEEP/W module of Geo-studio software. Analysis for the stability used SLOPE/W module with Swedish circle method and Bishop method. Safety factor of the upstream and downstream in different conditions was obtained. The results show that the design of the upstream cofferdam was reasonable, and it will provide theoretical basis for Seepage control design of cofferdam.

The Effect of Curtain Boundary on the Dam Foundation Seepage Control

2014 ◽  
Vol 638-640 ◽  
pp. 755-758
Author(s):  
Shao Jun Huo ◽  
Fu Guo Tong ◽  
Gang Liu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Calculation ◽  
Numerical Analysis ◽  
Boundary Conditions ◽  
The Finite Element Method ◽  
Dam Foundation ◽  
Seepage Control ◽  
Main Work ◽  
Element Method

The dam foundation seepage control is usually a main work of dam design. This paper presented the effects of different concrete curtain boundary conditions on the dam foundation seepage control through numerical calculation with the finite element method. The results show that the depth of concrete curtain strongly depends on the permeability of dam foundation. The middle of curtain should be deeper than its sides if the permeability of central riverbed is higher. Therefore the design of curtain should be based on the numerical analysis of the dam foundation seepage with different curtain boundary conditions in order to make sure the safety and economy.

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.

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