潭邵高速公路所经邵阳地区的膨胀土是典型的弱膨胀土 ,同时夹杂分布有少量的中膨胀土。膨胀土曾引起大量的路堑边坡、路基边坡的滑坡失稳和坍塌破坏 ,护坡、挡土墙断裂毁坏等 ,对工程进度和形象都产生了不良影响。为此 ,潭邵高速公路公司专门成立了膨胀土研究课题组 ,通过大量的实验研究与工程实践 ,摸清了该处膨胀土的特性 ,并找到了较好的处置措施 The expansive soil in the Shaoyang Expressway passing Shaoyang Expressway is a typical weak expansive soil with a small amount of medium expansive soil. Expansive soil has caused a large number of cutting slope, landslide instability and collapse of roadbed slope failure, slope protection, wall rupture damage, etc., have a negative impact on the progress and the image of the project. To this end, Tan Shao expressway company set up a special group of expansive soil research, through a large number of experimental research and engineering practice, find out the characteristics of the expansive soil and found a better disposal measures