甘肃省黄土地区特殊路基设计要点

黄土是第四纪的一种特殊堆积物。由于黄土具有易溶蚀、易冲刷、湿陷性、各向异性等工程特性,使得黄土地区的路基容易产生多种特有的问题和病害。黄土路堑边坡容易出现剥落、冲刷、滑坍、泥流等变形破坏;黄土路堤工坡面易遭雨水冲刷,形成沟槽,路肩和坡面容易发生滑坍。本文介绍了甘肃地区的黄土特性,论述了特殊路基的设计要点。

Design Points on Special Roadbed of Loess Area in Gansu Province

Loess is a kind of special sediment in Quaternary. Due to the engineering features of loess, such as easily dissolved, easily washed, collapsible and anisotropy, loess roadbed can easily produce a varfety of specific problems and diseases. Loess slope prone to falling off, erosion, collapse and slide, mud flows and other deformation; loess embankment slope prone to water erosion, the formation of grooves, hard and slippery slope prone to collapse. This thesis describes the characteristics of loess in Gansu praince and discusses the design points of the special roadbed.