Abstract：There are many slopes adjacent to water in nature，such as river banks，coastal dykes，earth dams，and reservoir and lake banks. Rapid drawdown of water levels often induces landslides of this kinds of slopes. A large-scale model test was performed to investigate the failure mode and causes of landsides of the slope adjacent to water during rapid drawdown of water level. The model slope is 15 m long，6 m high and 5 m wide，and the height of sloping part is 4 m. A water-level control system was developed to implement the simulation of the rapid drawdown of water level. Pore water pressures，total earth pressures，the slip surfaces and formation and development process of cracks on the slope were recorded during the simulation process by digital camera，high precision sensors，side tracers，etc.. The model test results indicate that the pore water pressure inside the slope showed a significant delay related to the drawdown of water level outside the slope. It indicates that measures that can lower the water levels inside the slope should be helpful to stabilize the slope. The failure mode that developed during rapid drawdown of water level was of the multiple retrogressive type. The experimental results can provide an improved understanding of the physical behavior and failure mode of soil slopes subjected to rapid drawdown of water level.
贾官伟，詹良通，陈云敏. 水位骤降对边坡稳定性影响的模型试验研究[J]. 岩石力学与工程学报, 2009, 28(09): 1798-1803.
JIA Guanwei，ZHAN Liangtong，CHEN Yunmin. MODEL TEST STUDY OF SLOPE INSTABILITY INDUCED BY RAPID DRAWDOWN OF WATER LEVEL. , 2009, 28(09): 1798-1803.
