膨润土防水毯在挡土墙病害治理中的应用

Application of Waterproof Blanket in Highly Filled Retaining Wall Treatment

为防止高填方挡土墙因回填土压实系数不达标和排水不畅等原因出现墙后填土含水量过饱和出现病害,针对南方多雨地区此类已建工程的事故处理,以及为将来的工程设计提出行之有效的防排水处理措施,结合工程实例进行了分析。介绍工程概况,描述事故发生背景,对比常规处理方法存在的缺点和局限性,剖析事故发生原因,提出治理措施及膨润土防水毯的应用方法,为今后类似问题的处理和设计提供借鉴。

In high filling areas,if the coefficient of backfill soil consolidation can reach relative standards and water is drained poorly,retaining wall back filling soil water supersaturation will occur probably,which will cause accidents due to poor quality. In order to prevent such accidents,especially in southern rainy regions,measures shall be taken for waterproofing,drainage and water treatment. In combination of an actual project case,described are the project profiles, accident happening background,analyzed are disadvantages and limitations of conventional treatment methods and accident causes and proposed are treatment measures. Introduced is the application method of geosynthetic clay liner, which can provide a fast,reliable,practical and economical way for similar problem treatment and design.