长江中下游护岸工程段崩岸原因分析——以彭兴洲—江心洲段为例

摘要

Revetments collapse occurs frequently in the middle and lower reaches of the Yangtze River,which has brought serious engineering failures and adverse influence on the anti flood and channel stability along the Yangtze River.It is urgent to resolve this problem right now.Taking Pengxingzhou-Jiangxinzhou as an example and basing on the data of field investigation,this paper tries to find out the main causes of revetments collapse.After theoretically analyzing the various factors which may lead to revetments collapse,it indicates that the increasing erosion because of the thalweg approaching the shoreline and the poor resistance of soil erosion are main causes of revetments collapse in this section."Expanding the scope of the guardian,stabilizing the slope toe,and smoothing the shoreline" will be the principle in the subsequent revetment reinforcement.%长江中下游河道中护岸工程段崩岸频发,带来了严重的工程失效问题,在很大程度上影响着长江沿岸防洪抗汛、稳定航道等功能,这一问题亟待解决.为探究长江中下游护岸工程段崩岸的主要原因,以彭兴洲—江心洲护岸段崩岸为例,基于现场调研资料,对可能导致其崩岸的各个因素展开理论分析,分析认为深泓贴岸淘刷加剧、岸坡土质抗冲性较差是造成该工程段崩岸的主要原因,故而提出以“扩大守护范围,稳固护岸岸脚,平顺岸线”为后续护岸工程加固的原则.