邵阳至怀化高速公路红粘土的发育特征及防护

对邵阳至怀化高速公路隆回县境内发育的红粘土的分布、组成、物理力学特征进行了分析.本处发育的红粘土除具有天然含水量、孔隙比、液限、塑限高的特点外,大多具有弱～中等膨胀性.根据红粘土的野外和室内试验成果,提出了膨胀性红粘土的膨胀潜势的划分办法,对红粘土的地基承载力的选择也进行了讨论.根据红粘土的一般特性及其具有膨胀性的特点,对路基和边坡分别提出了相应的治理、防护措施.

Charicteristics and Protection of Red Clay in Shaoyang-huaihua Highway

The characteristics on distribution, component and mechanics have been analysed on red clay of Shaoyang-huaihua highway, in Longhui County, Hunan province. It is high in natural water content, void ratio, liquid limit and plastic limit of red clay in the area. Most of red clay are feeble-middle expansive soil. According to outdoor and indoor experimnents of red clay, the partition method has been discussed on expansive red clay. Meanwhile choicing of ground bearing pressure also has been discussed on red clay. According to general characteristics and expansive characteristics, the schemes to dispose of and prevent red clay have been put forward on road foundation and slop.