多点位移计在高速公路高边坡稳定性监测中的应用

随着高速公路修建向山区扩展,公路高边坡问题日趋显著。安全监测能够直观、准确地反映坡体稳定性信息。变形是反映边坡稳定性最直观的物理量,多点位移计作为变形监测仪器在边坡工程中广泛应用。以安徽省汤屯高速公路一高边坡为研究对象,结合多点位移计的监测成果,分析坡体变形的时间、空间特征以及变形的主要影响因素,并把高边坡变形分为变形快速发展、蠕滑变形和变形基本稳定三个阶段,进而探讨降水对边坡变形产生的影响。

APPLICATION OF MULTIPLE-POINT ROD EXTENSOMETER TO HIGH SLOPE OF EXPRESSWAY STABILITY MONITORING

With construction of expressway expanding to mountain area,expressway high slope problems are becoming more and more significant.Safety monitoring can reflect information of slope stability visually and accurately.Deformation is the most intuitive physical quantity,so multi-position extensometers are widely used in slope engineering as deformation monitoring equipment.Researching on a high slope along expressway from Tangkou town to Tunxi city in Anhui province,combining monitoring results of multiple point rod extensometer,the paper analyzed the deformation character in time and space,the main impacting factors of deformation,and the three stages of deformation of high slopes are suggested： the rapid development of deformation,creep deformation and the stability.The paper explored the impact of precipitation on slope deformation.