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A platform for research: civil engineering, architecture and urbanism
Stability Analysis of Earth-rockfill Dam Slope under the Condition of Reservoir Water Level Fluctuation and Continuous Rainfall
In order to study the influence of reservoir water level fluctuation and continuousrainfall on the seepage and stability of small and medium earth-rockfill dams, based on theunsaturated seepage theory, this paper carries out the finite element simulation of seepage andstability of earth-rockrill dam slope under the condition of seepage stress coupling when thereservoir water level fluctuated and the rainfall with different intensities is continuous. Theresults show that: ①When the fluctuation rate of reservoir water level is the same but therainfall intensity is different, the variation difference of the safety factor of upstream anddownstream dam slope is small, the safety factor of upstream and downstream dam slope is moresensitive to water level fluctuation, and the safety factor of upstream dam slope is moresensitive to water level fluctuation than that of downstream dam slope; ②The most dangerouscondition of the upstream dam slope is the combination of sudden drop of reservoir water level by2 m/d and continuous rainfall of 15 mm/d, while that of the downstream dam slope is the combination of sudden rise of reservoir water level by 2 m/d and continuous rainfall of 15 mm/d. The results ofthis study are as a reference for correctly understanding the seepage and stability law of earth-rockfill dam slope under the condition of reservoir water level fluctuation and continuousrainfall, and for analyzing the risk and managing the emergency of small and medium homogeneousearth-rockrill dams under extreme working conditions.
Stability Analysis of Earth-rockfill Dam Slope under the Condition of Reservoir Water Level Fluctuation and Continuous Rainfall
In order to study the influence of reservoir water level fluctuation and continuousrainfall on the seepage and stability of small and medium earth-rockfill dams, based on theunsaturated seepage theory, this paper carries out the finite element simulation of seepage andstability of earth-rockrill dam slope under the condition of seepage stress coupling when thereservoir water level fluctuated and the rainfall with different intensities is continuous. Theresults show that: ①When the fluctuation rate of reservoir water level is the same but therainfall intensity is different, the variation difference of the safety factor of upstream anddownstream dam slope is small, the safety factor of upstream and downstream dam slope is moresensitive to water level fluctuation, and the safety factor of upstream dam slope is moresensitive to water level fluctuation than that of downstream dam slope; ②The most dangerouscondition of the upstream dam slope is the combination of sudden drop of reservoir water level by2 m/d and continuous rainfall of 15 mm/d, while that of the downstream dam slope is the combination of sudden rise of reservoir water level by 2 m/d and continuous rainfall of 15 mm/d. The results ofthis study are as a reference for correctly understanding the seepage and stability law of earth-rockfill dam slope under the condition of reservoir water level fluctuation and continuousrainfall, and for analyzing the risk and managing the emergency of small and medium homogeneousearth-rockrill dams under extreme working conditions.
Stability Analysis of Earth-rockfill Dam Slope under the Condition of Reservoir Water Level Fluctuation and Continuous Rainfall
FENG Zhihu (author) / LIANG Yukai (author) / HUANG Peiteng (author) / ZHUANG Jie (author) / JIA Yanxiang (author)
2020
Article (Journal)
Electronic Resource
Unknown
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