软弱红黏土地层边坡滑坡变形处置措施——以渝湘高速公路ZK124+128-K124+455左侧段位路基为例

Treatment Measures of Slope Landslide Deformation in Weak Red Clay Stratum——Taking the Left Section Subgrade of ZK124 + 128~K124 + 455 of Yu-Xiang Expressway as an Example

路基高边坡在施工过程中会出现不同形式、不同规模的变形与破坏,尤其是软弱地质条件下,边坡极易失稳、滑塌,造成人员伤亡或财产损失。为有效解决边坡开裂、滑塌的现象,需要加强设计勘察阶段对边坡地层的调研,精确掌握岩土分界线,正确绘制工程地质断面图,合理设置相应的支护措施;在施工期间需严格落实截水断流,做好排水,并做到分级开挖、分级防护。文章以渝湘高速公路ZK124+128~K124+455左侧段位路基为例,首先分析了软弱红黏土质边坡滑坡变形的原因和滑坡变形破坏特征,然后进行稳定性计算及分析,并提出适用的解决措施,以提高边坡的整体安全性。

High subgrade slopes will be deformed and damaged in different forms and scales during the construction process. Especially under weak geological conditions, the slope is prone to instability and collapse, resulting in casualties or property losses. In order to effectively solve the phenomenon of slope cracking and collapse, it is necessary to strengthen the investigation of slope strata in the design and survey stage to accurately grasp the geotechnical boundary,correctly draw the engineering geological cross-section map,and reasonably set up the corresponding supporting measures. During the construction period, water cut and flow cut should be strictly implemented, drainage should be done well, and graded excavation and graded protection should also be done. Taking the left section subgrade of ZK124 +128~K124 + 455 of Yu-Xiang Expressway as an example,this paper first analyzes the causes of landslide deformation and landslide deformation and failure characteristics of weak red clay slope. Then, it conducts stability calculation and analysis, and puts forward applicable solutions to improve the overall safety of the slope.