贵州红粘土工程地质特征探讨

贵州为典型的喀斯特地貌，广泛分布的碳酸盐岩，亚热带的温湿季风气候，为红粘土的形成提供了良好条件，在地表除基岩裸露地段外，普遍分布着一层棕红、褐黄色高塑性红粘土。红粘土是一种区域性特殊土，具有表面收缩、上硬下软、裂隙发育的特征。这类土虽然具有较高的天然含水率及孔隙比大的弱点，但也具朋较高的地基强度与较低的地基压缩性，是良好的建筑基础。

Probe into Engineering Geological Features of Red Clay in Guizhou Province

In Guizhou Province,there are typic al karst geomorphy,and wide distrib utive carbonatites,and moist monso on climate of subtropics.It had provided good con ditions for formation of red clay.On the surface,besides outcrop of base ment rocks,distributed widely one layer of high plastic red c lay.The red clay is one kind of region al special clay.There are propertie s of surface contract,hard in upper part and soft in lower part an d fracture develop.In this clay,there are weak points of higher natural m oisture content and bigger porosity,but there are also higher f oundation strength and lower compre ssibility of foundation,so that is a good building basement.