Study on the influence of seepage field and stability of earth-rock dam with core with rainfall infiltration and drawdown of reservoir water lever

Author

Zhang, Xiao-Fei ; Ni, Sha-Sha ; Sun, Li-Chang ; Jiang, Wen-Shuang

Author_Institution

Coll. of Civil Eng. & Archit., Guangxi Univ., Nanning, China

fYear

2011

fDate

16-18 Sept. 2011

Firstpage

1777

Lastpage

1781

Abstract

Based on the theory of saturated-unsaturated unsteady seepage of porous media and finite element method, it simulates seepage field of naban earth-rock dam with core under the action of rainfall infiltration and reservoir water level drawdown, including nine calculation conditions with different rainfall intensity, rainfall duration and reservoir water level decrease. Then based on the seepage field, it gets the safety factor of upstream slope of earth-rock dam with core using the limit equilibrium method. It also analyzes the rules of seepage field and slope stability with time and the influence of velocity of reservoir water level drawdown, rainfall intensity, rainfall duration on seepage field and slope stability. It will be help with reservoir regulation and daily management.

Keywords

dams; finite element analysis; geotechnical engineering; mechanical stability; rain; reservoirs; rocks; structural engineering; earth rock dam stability; finite element method; limit equilibrium method; porous media; rainfall duration; rainfall infiltration; rainfall intensity; reservoir water level drawdown velocity; slope stability; unsaturated unsteady seepage; upstream slope safety factor; Conductivity; Educational institutions; Nickel; Reservoirs; Stability analysis; Three dimensional displays; drawdown of reservoir water lever; earth-rock dam with core; rainfall infiltration; seepage field; stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Control Engineering (ICECE), 2011 International Conference on

Conference_Location

Yichang

Print_ISBN

978-1-4244-8162-0

Type

conf

DOI

10.1109/ICECENG.2011.6058288

Filename

6058288