平顺抛石护岸水毁模式及机理

Water damage modes and mechanism of riprap revetment

平顺抛石护岸工程在长江中下游应用较为广泛,能够增强堤岸的抗洪能力,保障沿江城乡防洪安全或控制有利河势。然而,护岸块石常常发生滑落导致抛石护岸破坏。针对抛石护岸的水毁破坏问题,进行了抛石护岸实际水毁情况调研及水槽试验研究,认为平顺抛石护岸水毁主要表现为护岸块石的流失、滑落以及岸坡变形,导致坡面土体裸露,提出了抛石护岸的3种水毁破坏模式并分析了相应的破坏机理。

The riprap revetment is widely used in the middle and lower reaches of the Yangtze River , which canenhance the flood resistance of the embankment and can ensure the safety of flood control and control the favorable river potential.However , rubbles crept down frequently , which can lead to the damage of revetment.For the problem of waterdamage in riprap revetment , the actual destruction modes of riprap revetments and flume experiments about riprap damagewere researched.It is believed that the water damage of smooth riprap revetment is mainly manifested as the loss, slide and slope deformation of the revetment rocks , which leads the surface soil of slope to be exposed.In this paper , three typesof water damage modes are proposed and the corresponding damage mechanism is analyzed.