沈海复线高速公路某滑坡深部位移监测分析

Analysis of Deep Displacement Monitoring on a Landslide of Shenhai Highway

沈海复线高速公路漳州某段路堑边坡在施工中发生滑坡,同时相邻段边坡出现裂缝。基于深部位移监测技术,研究了裂缝边坡的深部位移变化特征。首先介绍了裂缝边坡(滑坡)的位移监测情况;然后分析了监测数据,分析表明该滑坡深部位移变化可分为治理过程中变形加剧阶段和工后变形稳定阶段,变形加剧是由于滑体在外界因素影响下沿滑动带滑动引起的;最后结合工程地质条件和现场调查,分析了坡体在治理过程中短期内变形加剧的原因。并通过比较治理过程中和工后位移变化特征,得知边坡治理措施在阻止坡体变形方面发挥了一定作用。

A cutting slope at Zhangzhou section of Shenhai Highway had cracks appeared when its adjacent slope collapsed in the process of construction,so the deep displacement variation of the slop with cracks was discussed in this paper based on the deep displacement monitoring technique. Firstly the crack slope( landslide) displacement monitoring scheme was introduced,then the monitoring data were analyzed and the result showed that the change of deep displacement could be divided into two phases: phase of deformation increasing in the construction process and deformation stable phase after construction,increasing deformation was caused under external factors by body-sliding along the sliding face. Finally,combined with the engineering geological condition and field investigation,the reasons of the increasing deformation in short term were discussed. And by comparing displacement characteristics in the construction process and after construction,it showed that slope control measures had contributed much to prevent the slope deformation.