高水位长期浸泡背景下堤防土体工程边坡稳定性研究  

Study on Stability of Embankment Soil Slope under Long-Term Immersion of High Water Level

作　　者：许艳杰[1] XU Yan-jie(Shenyang Water Conservancy Construction Survey and Design Institute Co.Ltd.,Shenyang 110000,China)

机构地区：[1]沈阳市水利建筑勘测设计院有限公司,沈阳110000

出　　处：《水利科技与经济》2023年第5期12-16,26,共6页Water Conservancy Science and Technology and Economy

摘　　要：考虑到堤防在汛期会受到高水位长期浸泡等不利影响,为了研究堤防土体工程的边坡稳定性,设计水库稳定性试验,构建砂槽模型。通过高水位的长期浸泡和水位的突然下降,对堤防边坡的稳定性进行监测。结果表明,堤防长期暴露在高水位下时,由整个断面形成的土体强度会在短时间内迅速下降,堤后水流出逸点均位于堤脚附近;主体为黏性土的堤防模型迎水坡更容易发生较大的渗透破坏。Considering that the embankment will be affected by long-term immersion of high water level in the flood season,in order to study the slope stability of the embankment soil engineering,the reservoir stability test is designed and the sand channel model is constructed.The stability of embankment slope is monitored through long lasting immersion of high water level and sudden drop of water level.The results show that when the embankment is exposed to high water levels for a long period of time,the strength of the soil formed by the entire section decreases rapidly within a short period of time,and the water escape point behind the embankment is near the embankment foot;the upstream slope of the embankment model with the main body of cohesive soil is more prone to large seepage damage.

关 键 词：高水位 长期浸泡 堤防土体 边坡 稳定性 

分 类 号：TV871[水利工程—水利水电工程]