堤防渗透侵蚀破坏有关概念辨析  

Concept analysis of seepage erosion damage of levee

作　　者：姚秋玲[1,2] 孙东亚[1,2] 张顺福[1,2] 乔楠 YAO Qiuling;SUN Dongya;ZHANG Shunfu;QIAO Nan(China Institute of Water Resources and Hydropower Research,Beijing 100038;Research Center on Flood&Drought Disaster Reduction of the Ministry of Water Resources,Beijing 100038)

机构地区：[1]中国水利水电科学研究院,北京100038 [2]水利部防洪抗旱减灾工程技术研究中心,北京100038

出　　处：《中国防汛抗旱》2021年第8期7-10,45,共5页China Flood & Drought Management

基　　金：国家重点研发计划课题(2017YFC1502603)。

摘　　要：堤防工程汛期经常出现渗透侵蚀破坏如管涌和接触冲刷险情,也是近年的研究热点。但工程中的管涌和接触冲刷险情,与土力学中的定义并不完全相同。从土力学中渗透破坏形式的概念出发,结合近年渗透破坏模式研究,梳理堤防工程中管涌和接触冲刷险情的概念,将常见的堤防管涌险情明确为逆向侵蚀管涌,将堤防接触冲刷分为堤防不同土体间的接触冲刷和穿堤建筑物与堤防土体间的接触冲刷,后者又可细分为穿堤建筑物与周边土体接触不良形成的集中渗漏侵蚀、涵管破损导致的集中渗漏侵蚀。Seepage erosion,such as piping and contact erosion,often occurs in dikes during flood seasons,which is also one of the hot research topics.However,the piping and contact erosion in dikes are not exactly the same as those defined in the soil mechanics.Starting from the related definition of seepage failure forms in the soil mechanics,combined with the seepage erosion failure model in recent years,combing the concept of piping and contact erosion in dikes,the piping in dikes is called backward erosion piping,and the contact erosion in dikes is classified into between different soils and between the building across dike and the dike body.The latter can be further classified into the concentrated leak erosion caused by poor contact between the building and the surrounding soil and by the cracked conduits.

关 键 词：逆向侵蚀管涌 接触冲刷 穿堤建筑物 渗透侵蚀 堤防工程 

分 类 号：TV871[水利工程—水利水电工程]