高速公路浸水路堤渗透稳定特性试验分析  

Experimental study on seepage stability of immerseable subgrade of highway

作　　者：杨飞翔 Yang Feixiang(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]中铁二院工程集团有限责任公司,四川成都610031

出　　处：《山西建筑》2022年第4期134-136,共3页Shanxi Architecture

摘　　要：水的渗透破坏是影响浸水路堤稳定性的重要因素之一。通过对杭兰高速公路某沿河浸水路基填料开展渗透稳定试验,分析该填料的渗透破坏类型和临界水力坡降,判断路基渗流最不利位置处的渗透稳定性。结果表明:该填料的渗透破坏类型为过渡型管涌,临界水力坡降为0.656,在路基渗流最不利位置处的渗流坡降为0.571,大于填料允许水力坡降0.437,即在该处将发生渗流破坏,需采取一定的防排渗措施。Seepage failure is one of the important factors to affect the stability of immseable subgrade.A series of seepage stability tests in one of the immseable subgrade of Hanglan Expressway were conducted to explore the seepage failure type and critical hydraulic gradient value.And also,the most disadvantage point of this seepage subgrade was discussed.The test results show that the seepage failure type of this filling is transition piping,the critical hydraulic gradient value is 0.656 and the most disadvantage point’s hydraulic gradient value is 0.571,which is bigger than the allowed hydraulic gradient value 0.437.Namely,piping erosion damage will happend at this point and some anti-seepage measures need to be taken.

关 键 词：浸水路基 渗透破坏 临界水力坡降 

分 类 号：U416.12[交通运输工程—道路与铁道工程]