强冲刷条件下大型钢丝网卵石包填槽护底结构

Large wire mesh pebble bag structure for river bottom protection against strong scouring

抛石(枕)结构在内河航道整治工程中广泛应用,但对于水深、流急等流态较为复杂的河段,传统结构无法满足河道抗冲要求。针对这一不足,提出了一种新型结构——大型钢丝网卵石包结构。通过力学模型对钢丝网卵石包漂移距及稳定性进行分析,研究了结构的尺寸。结合枝江—江口河段工程进行运用,取得了较好的效果。

Riprap and stone pillow are widely used in inland waterway regulation engineering,but the traditional structure is not sufficient against scouring in reaches with deep water and high velocity where the flow regime is complex.In this work,a new large wire mesh pebble bag structure is proposed to make up for the deficiency.A mechanical model is put forward to analyze the drift distance and stability and the structure’s size is studied.This structure is utilized in Zhijiang-Jiangkou waterway project and is proven effective.