深厚覆盖层地基潜蚀研究综述  

Review of suffusion in deep alluvium foundation

作　　者：罗玉龙[1,2] 张兴杰 张海彬 盛金昌 詹美礼[1] 王惠民[1] 何淑媛 LUO Yu-long;ZHANG Xing-jie;ZHANG Hai-bin;SHENG Jin-chang;ZHAN Mei-li;WANG Hui-min;HE Shu-yuan(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing,Jiangsu 210098,China;Jiangxi Research Center on Hydraulic Structures,Jiangxi Provincial Institute of Water Sciences,Nanchang,Jiangxi 330029,China)

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]江西省水利科学研究院江西省水工安全工程技术研究中心,江西南昌330029

出　　处：《岩土力学》2022年第11期3094-3106,共13页Rock and Soil Mechanics

基　　金：国家重点研发计划(No.2017YFC1502603);国家自然科学基金资助项目(No.51679070);江西省水利科学研究院江西省水工安全工程技术研究中心开放基金项目(No.2020GGCZX01)。

摘　　要：潜蚀是深厚覆盖层渗透稳定性问题中比较主要和突出的一种表现型式,开展深厚覆盖层潜蚀问题的相关试验及理论研究,对于保障中国已建、待建重大水电工程的安全均具有重要的理论和实际意义。首先,区分了潜蚀与向后侵蚀管涌,指出潜蚀与向后侵蚀管涌的发生机制完全不同,两者不能混淆在一起。与向后侵蚀管涌相比,潜蚀更具隐蔽性,其发生发展机制更加复杂。其次,从潜蚀发生的几何条件、水力条件及潜蚀数学模型等3个方面详细梳理总结了潜蚀研究的相关进展。最后,结合雅鲁藏布江下游水电开发等国家重大工程,提出未来应着重加强对原状覆盖层土体内部稳定性评价,对极端条件、复杂渗流条件、复杂地层条件下潜蚀发生发展机制,潜蚀时间效应及其长期影响的评价和控制,对潜蚀本构关系及其数学模型等方面的试验及理论研究。Suffusion is the main and prominent form of seepage stability in deep alluvium foundation. It is of great theoretical and practical significance to carry out relevant experiments and theoretical studies on suffusion in deep alluvium foundation for the safety of major hydropower projects under construction and to be built in China. In this paper, firstly, it is pointed out that the mechanisms of backward erosion piping and suffusion are completely different, so they cannot be confused together. Compared with backward erosion piping, suffusion is more subtle, and its mechanism is more complex. Secondly, the research of suffusion is summarized in detail from three aspects: geometric condition, hydraulic condition and mathematical model. Finally, combined with the lower Yarlung Tsangpo River hydropower development and other major national projects, the following aspects should be emphasized,including the evaluation of internal stability in deep alluvium foundation, the mechanism of suffusion initiation and progression under extreme conditions, complex seepage conditions and formation conditions, the evaluation and control of suffusion time effect and its long-term impact, and the experimental and theoretical research of suffusion constitutive relation and its mathematical model.

关 键 词：深厚覆盖层 渗透稳定性 潜蚀 向后侵蚀管涌 

分 类 号：TU433[建筑科学—岩土工程]