Abstract
Reservoir drawdown and rainfall have important influence on bank landslides, but existing research on these two factors is too idealistic. A new reservoir drawdown model was proposed for the rapid drawdown stage based on the consideration of reduction, navigation and power generation. A rainfall model was proposed considering actural rainfall and rainfall time based on fifty years of daily rainfall data. At last, taking Baishuihe landslide as an example, the landslide stability was analyzed under the combined influenced of rainfall and reservoir drawdown. Results show that the Baishuihe landslide is mainly influenced by reservoir drawdown. The terminal reservoir drawdown model can reduce the effect of continuous decline of reservoir on landslide and the stability decreases about 0.7%~1.2% compared with normal scenario. The reservoir drawdown model proposed in this paper is of significance to the reservoir operation in the Three Gorges Reservoir.
Highlights
The change of reservoir water level and rainfall are important factors inducing reservoir bank landslide [1,2,3]
The maximum daily drop of 0.6 m/d set in the previous period limits the benefit of the three Gorges Dam, so it is necessary to study the influence of increasing the decline rate of reservoir water level on the stability of landslide
Baishuihe landslide is located in Baishuihe Village, Shazhenxi Town, the south bank of the Yangtze River, according to the three Gorges Dam site 56km
Summary
The change of reservoir water level and rainfall are important factors inducing reservoir bank landslide [1,2,3]. The maximum daily drop of 0.6 m/d set in the previous period limits the benefit of the three Gorges Dam, so it is necessary to study the influence of increasing the decline rate of reservoir water level on the stability of landslide. The above research ignores the actual dispatching of reservoir water level and the distribution of rainfall, and two important influencing factors are oversimplified. In this paper, taking Baishuihe landslide as an example, based on the actual reservoir water dispatching, a dispatching model for increasing the decline rate of reservoir water level is proposed, and according to the rainfall data of Zigui in the past 50 years, rainfall and rainfall loading time are fully considered. The stability of Baishuihe landslide under different reservoir water decline rates and rainfall conditions is studied In this paper, taking Baishuihe landslide as an example, based on the actual reservoir water dispatching, a dispatching model for increasing the decline rate of reservoir water level is proposed, and according to the rainfall data of Zigui in the past 50 years, rainfall and rainfall loading time are fully considered. the stability of Baishuihe landslide under different reservoir water decline rates and rainfall conditions is studied
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
