干旱气候下高液限黏土质堤防裂隙演变分析  

Analysis of crack evolution in high liquid limit clay embankment under arid climate

作　　者：程诚[1] 张春林[1] 刘金杰 CHENG Cheng;ZHANG Chunlin;LIU Jinjie(Huaihe River Management Bureau of Anhui Province,Bengbu 233000,China;School of Resources and Environmental Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]安徽省淮河河道管理局,安徽蚌埠233000 [2]合肥工业大学资源与环境工程学院,安徽合肥230009

出　　处：《江淮水利科技》2025年第1期31-35,共5页Jianghuai Water Resources Science and Technology

基　　金：安徽省自然科学基金水科学联合基金项目(2308085US08)。

摘　　要：随着全球气候变化加剧,出现极端干旱气候的频率逐渐增加,干旱气候会使高液限黏土质堤防失水收缩产生裂缝。通过室内相似试验、数字图像处理技术以及数值模拟,研究了淮北大堤高液限黏土质堤防的裂隙发育规律。研究结果表明:数字图像处理技术可以高效、准确地识别试样表面的裂隙,有助于分析裂隙发育的趋势;在干燥过程中,堤顶部位裂隙度发育过程分为缓慢发育、快速发育和稳定发育三个阶段;不均匀的光照会加剧堤顶部位的裂隙发育。With the intensification of global climate change,the frequency of extreme arid climate in the world is gradually increasing.The arid climate could cause the high liquid limit clay embankments to shrink and produce cracks.Under indoor similarity test,digital image processing technology and numerical simulation,the fracture development law of high liquid limit clay embankment in Huaibei embankment was studied.The results showed that digital image processing technology could efficiently and accurately identify the cracks on the surface of the sample,which is helpful to analyze the trend of crack development.During the drying process,the development process of fracture degree at the top of the embankment can be divided into three stages,which are slow development stage,rapid development stage and stable development stage.Uneven solar radiation intensity exacerbates the development of cracks at the top of the embankment.

关 键 词：高液限黏土 堤防 干缩裂隙 裂隙度 演变分析 

分 类 号：TU443[建筑科学—岩土工程]