一、概述裂土具有它特殊的性质,在裂土地区设置挡土墙,应该根据裂土的特性去考虑土压力对墙的作用,使挡土墙设计得更为合理,本文是根据我院在淮南公路路堑挡土墙试验段对土压力测试的结果,结合裂土的超固结性、强膨胀性及多裂隙性去进行分析,并提出几点初步认识。试验段的裂土地层为黄褐色,夹有灰白色条纹,裂隙面偶见铁锰胶膜,土体中含有少量 I. Overview Cracking has its own special properties. Setting retaining walls in the rift areas should consider the effect of earth pressure on the walls according to the characteristics of the rifts so that the design of the retaining wall is more reasonable. The results of earth pressure test in the test section of the retaining wall of the Huainan Highway are analyzed, combined with the over consolidation, strong expansibility and multi-fissure of the fractured soil, and some preliminary understandings are put forward. In the experimental section, the stratum is yellowish brown with gray-white streaks, and the ferrocene film is sometimes seen in the fracture surface. The soil contains a small amount of