非饱和膨胀土边坡破坏机理与稳定性分析  

Analysis Methods of Unsaturated Expansive Soils Slope

作　　者：汪明元[1] 徐晗[2] 杨洪[2] 周欣华[2] 

机构地区：[1]浙江大学岩土工程研究所,杭州310027 [2]长江科学院水利部岩土力学与工程重点实验室,武汉430010

出　　处：《南水北调与水利科技》2008年第1期151-153,158,共4页South-to-North Water Transfers and Water Science & Technology

基　　金：国家“十一五”科技支撑计划

摘　　要：膨胀土具有胀缩性、裂隙性、超固结性,其工程性质特殊,即使很缓的边坡也可能失稳,南水北调中线工程膨胀岩土渠段长达340km,渠坡的处理技术、分析方法与长期稳定性是关键问题。分析了非饱和膨胀土边坡的破坏特点、破坏机理与影响因素,并对处理措施的作用机理与模拟方法进行了分析,在此基础上探讨了非饱和膨胀土边坡稳定性的分析方法,并对南水北调中线工程新乡段膨胀岩土渠坡进行了分析,得到了初步成果。Expansive soils take on the properties of expansion, fissure and over-consolidation. Even much gentle slope could lose stabilization. The length of expansive soils and rocks ditch part of the Mid-line Water transfer from South to North is 340 km, so the disposal technique, analysis methods and the long term stability of ditch slope are the key problems. The wreck character, mechanism, and the correlative faetors of unsaturated expansive soils and rocks slope are analyzed. The mechanism and numerical modeling methods for disposal measures are studied. The analysis method for unsaturated expansive soils and rocks ditch slope is discussed. Xinxiang ditch part is preliminarily analyzed and some significative results are obtained.

关 键 词：非饱和膨胀土 稳定性分析 边坡 南水北调工程 

分 类 号：TV68[水利工程—水利水电工程] TU443[建筑科学—岩土工程]