Title :
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
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;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2011 International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4244-8162-0
DOI :
10.1109/ICECENG.2011.6058288
