某古滑坡病害成因与整治措施研究  

On the Causes and Remediation Measures of an Ancient Landslide Hazard

作　　者：林灿阳 LIN Canyang(Institute of Hydrogeology and Engineering Geology Survey of Fujian Province,Zhangzhou 363000,Fujian,China)

机构地区：[1]福建省水文地质工程地质勘察研究院,福建漳州363000

出　　处：《路基工程》2024年第6期205-212,共8页Subgrade Engineering

基　　金：福建省自然科学基金项目:全埋刚架桩抗滑机理及其基于Pasternak地基模型的有限差分计算方法研究(2022J01155)。

摘　　要：某古滑坡因公路建设从其前缘经过、开挖扰动且未采用有效加固措施导致滑坡复活变形;且隧道右侧弃土场开挖使其对滑体前缘的反压作用失效,进一步加剧了滑坡变形。通过现场踏勘、地质勘察、深部位移监测成果,明确该滑坡的滑面位置,进行稳定性分析计算确定滑坡下滑力,采用在滑坡中部和前部各设置一排预应力锚索抗滑桩,辅以排水工程进行综合整治。施工期及工后监测表明边坡深部变形位移趋于收敛,说明滑坡治理是有效的。An ancient landslide forepart was excavated due to the highway construction,disturbance and failure to adopt effective reinforcement measures resulted in landslide revival.In addition,the excavation of the dumping ground on the bottom-right of the landslide made the counterpressure of the leading edge invalid,which further aggravated the landslide deformation.According to the site investigation,geological survey,deep displacement monitoring achievements,sliding surface was comfirmed.Furthemore,stability analysis was carried out to determine sliding force,then two rows of prestressed anchor anti-slip piles on the middle and front part of the landslide were set,supplemented by drainage works for comprehensively treated the landslide.Construction period and post-construction monitoring shows that the deep deformation displacement of the landslide tends to converge,which poved the landslide treatment was successful.

关 键 词：古滑坡区域 公路工程 病害成因 整治措施 锚索抗滑桩 截排水 

分 类 号：U418.55[交通运输工程—道路与铁道工程]