石马河流域阻水桥梁防洪评价分析

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摘 要：石马河流域内樟木头镇现有8座旧桥不能满足防洪要求，需对现有桥梁进行改扩建。该研究以圣罗兰桥为例，从阻水桥梁对石马河流域的壅水、河势影响、堤防稳定和河道冲淤方面的影响进行了系统分析，并根据旧桥阻水严重的情况及工程建设对河道的影响，提出了合理的安全防护措施。

关键词：防洪评价;阻水;河势影响

中图分类号 U442.3+3 文献标识码 A 文章编号 1007-7731（2022）05-0159-03

Abstract： The existing 8 old bridges in Zhangmutou town of the Shima river basin can′t meet the flood control requirements， existing bridges need to be renovated and extended. This study takes the Saint Laurent Bridge as an example， based on the analysis of the influence of blocked bridges on the stability of embankments and river erosion and silting in Shima River Basin， reasonable safety protection measures are put forward according to the serious water blocking situation of old Bridges and the influence of engineering construction on river.

Key words： Flood control evaluation; Water blocking; River situation impact

在河道管理范围内开展工程建设活动，往往会导致河道水流形态变化，不利于河道维持冲淤平衡，甚至有的工程会影响河道水质和河势稳定，对水利工程管理和防汛抢险有着较大影响[1]。（剩余3399字）