长江干堤典型管涌险情成因分析及对策研究  

Causes analysis of typical piping dangers of main levees of Yangtze River and countermeasures

作　　者：崔皓东[1] 陆齐 陈劲松[1] 盛小涛[1] 张伟[1] CUI Haodong;LU Qi;CHEN Jinsong;SHENG Xiaotao;ZHANG Wei(Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources,Yangtze River Scientific Research Institute,Wuhan430010,China;Yangtze River Management Office of Anqing City,Anqing246003,China)

机构地区：[1]长江科学院水利部岩土力学与工程重点实验室,湖北武汉430010 [2]安庆市长江河道管理处,安徽安庆246003

出　　处：《水利水电快报》2021年第1期54-58,共5页Express Water Resources & Hydropower Information

基　　金：国家重大研发计划项目(2017YFC1502604,2017YFC0405001)。

摘　　要：管涌是长江堤防最常见也是危害最大的险情之一,至今仍是长江堤防安全的重要威胁。2020年汛期,长江干堤局部超警戒水位持续长达60 d,为近年最长时间,其中,城陵矶最高水位达到34.74 m,也为近年最高水位。以长江干堤岳阳瓦湾段管涌险情为例,利用历史资料和现场调查,根据该段地质条件及渗控措施,建立了三维渗流有限元模型,重点模拟减压井失效及功能发挥工况下,该段地层内渗透比降分布特征,揭示该处管涌险情成因,并探讨相应处理对策。论文研究成果可为类似堤段汛后除险加固提供参考。Piping is one of the most common and harmful dangers of Yangtze River levees and so far it is still a major threat to its safety.In the flood season of 2020,the water level at local area of the main Yangtze River exceeded the warning water level for 60 days,the longest in recent years and the highest water level of Chenglingji Station reached 34.74 meters,the highest in recent years.On the basis of historical data and field investigation,taking the piping danger at Wawan section of Yangtze River main levees in Yueyang as an example and considering the geological conditions and seepage controlling measures,3 D seepage FEM was established.The distribution features of the seepage gradients in the cases of function failing and function normal of the relief well were simulated to reveal the causes of piping dangers and the countermeasures were put forward to provide reference for danger elimination and reinforcement of the similar situations along Yangtze River levees after flood season.

关 键 词：管涌险情 减压井 除险加固 长江干堤岳阳瓦湾段 

分 类 号：TV871.3[水利工程—水利水电工程]