广州市某河涌整治工程地质问题分析及软基处理对策

Analysis of Geological Problem and Countermeasures of Soft Foundation Treatment of a River Regulation Project in Guangzhou

广州市某河涌整治工程主要包括堤防重建和水闸改建,地处软土区,工程地质条件复杂。通过勘探、原位试验、室内实验等地质勘察方法,针对地基渗透稳定、地震液化、边坡稳定性、沉降变形及抗滑稳定性等工程地质问题进行分析评价,并依据软土工程特性及建筑工程特征分别采用换土垫层法、塑料插板排水固结法、深层搅拌桩和桩基础等地基处理方法,效果较好。

The rebuilding dike and sluice reconstruction are included in river regulation project in Guangzhou, the engi-neering geological condition is complex and belongs to soft soil. In the paper, through geological prospecting methods, such as exploration, in-situ test and laboratory experiment,the engineering geological problems are analyzed and evalua-ted ,for instance, foundation, the liquefaction of the earthquake, the liquefaction, slope stability , settlement deformation and anti - sliding stability. At the same time, according to the properties of soft soil engineering and the characteristics of con-struction engineering, the soil cushion method, the plastic plate drainage consolidation method, the deep mixing pile and pile foundation and other foundation treatment methods are adopted to deal with the problem respectively, and better re -sults have been achieved.