Collapse Settlement of a Clay Core Rockfill Dam during the First Impoundment

2009 ◽  
Author(s):  
F. Jafarzadeh ◽  
T. Heidari ◽  
A.R. Azami
Keyword(s):  
Rockfill Dam ◽  
Clay Core ◽  
Core Rockfill Dam

STRUCTURAL DESIGN OF NEW LINING FOR DIVERSION TUNNELS: ROGUN DAM AND HPP PROJECT

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Idin Ebrahimi ◽  
Niloofar Binazadeh ◽  
Abolfaz Mehinrad
Keyword(s):  
Structural Design ◽  
Concrete Lining ◽  
River Diversion ◽  
Rockfill Dam ◽  
Clay Core ◽  
Core Rockfill Dam

Rogun dam is a 335m high clay core rockfill dam which will be constructed on Vakhsh River in Tajikistan. Originally, two diversion tunnels with similar geometry were designed for discharging the seasonal floods, up to 3290m3/s. River diversion was carried out in November 1987 and a 45m high rockfill cofferdam was constructed. However, because of two collapses in the diversion tunnels, the cofferdam was overtopped in May 1993. Reconstruction of these tunnels started in 2009 and the collapsed areas were repaired. Nowadays, the design of complementary rehabilitation including new concrete lining for those parts of the tunnels will be used as tailrace tunnels are underway. The present paper describes the present conditions of diversion tunnels No. 1 and 2, explains the procedure used for the structural design of these tunnels, and presents the results of such design.

Stress-Deformation Numerical Analysis of Clay Core Rockfill Dam Based on Duncan-Chang E-B Model

2013 ◽  
Vol 275-277 ◽  
pp. 1436-1440
Author(s):  
Hong Hai Zhang ◽  
Ai Min Gong ◽  
Chun Yan Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Stress Level ◽  
Normal Operating Condition ◽  
Rockfill Dam ◽  
Distribution Rule ◽  
Safe State ◽  
Clay Core ◽  
Core Rockfill Dam

Used static finite element method to analyse the clay core rockfill dam of laojunshan reservoir whith Duncan-Chang E-B model. The results shows that the maximum of stress level is 0.78 under completion mode, and the maximum of stress level is 0.9 under normal operating condition. The stress and displacement value of the dam as well as its distribution rule is normal, and the maximum of stress level is less than 1. The possibility of occurring hydraulic split for core-wall is very small, and the dam is in a safe state.

Effect of freeze–thaw cycles on the deformation behavior of gravelly soil in the 300 m-high earth core rockfill dam

2021 ◽  
Vol 80 (8) ◽  
Author(s):  
Feng Ming ◽  
Xiu-Ling Ren ◽  
Jin-guo Wang ◽  
Zhi-wei Zhou ◽  
En-Long Liu ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Freeze Thaw ◽  
Earth Core ◽  
Rockfill Dam ◽  
Gravelly Soil ◽  
Core Rockfill Dam

Real-time compaction quality monitoring of high core rockfill dam

2011 ◽  
Vol 54 (7) ◽  
pp. 1906-1913 ◽  
Author(s):  
DengHua Zhong ◽  
DongHai Liu ◽  
Bo Cui
Keyword(s):  
Real Time ◽  
Quality Monitoring ◽  
Rockfill Dam ◽  
Core Rockfill Dam
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