颗粒级配对堤坝碎石土内部渗透侵蚀影响的试验研究

Experimental study on the effect of grain composition on the seepage erosion in gravel soil

渗透作用是造成土石坝和堤防工程破坏的重要诱因,研究碎石土内部渗流侵蚀规律具有重要的理论意义和工程价值。文章利用试验研究的方法,探索了颗粒级配对堤坝碎石土内部渗透侵蚀影响。结果显示,碎石土的颗粒级配变化范围越窄,越有利于提高其抗渗稳定性。基于研究成果,建议在碎石土堤坝施工过程中选择颗粒级配范围较窄的碎石土,以提高堤坝的抗渗性能。

Seepage is an important inducement for the destruction of earth-rockfill dam and dike projects.It is of great theoretical significance and engineering value to study the law of seepage erosion in gravel soil.In this paper,the method of experimental study is used to explore the effect of grain composition on the internal seepage erosion of gravel soil.The results show that the narrower the range of grain composition is,the more favorable it is to improve its impermeability.Based on the results,it is suggested that the gravel soil with narrow grain composition should be selected during the construction to improve the impermeability of the dam.