皖南山区某高速公路红砂岩特性及其路基施工工艺研究

新鲜红砂岩暴露在大气环境下或受到干湿循环作用,易崩解破碎,工程地质性质降低.如果用它作路基填料,必须进行相应的工程技术措施处理,才能使其路用性能得到改善,达到各项标准.在分析先前科研工作者对红砂岩的相关研究成果基础上,结合本高速公路标段出露红砂岩的特点,本文通过试验,在填筑、施工工艺等方面对其进行了研究,得出了适用于本高速公路的红砂岩路基施工工艺.其研究成果对相似工程的施工具有较好的指导作用.

RED SANDROCK PROPERTIES AND SUBGRADE CONSTRUCTION TECHNOLOGY STUDY ON IT ALONG AN EXPRESSWAY IN THE SOUTH MOUNTAINOUS AREA OF PROVINCE ANHUI

Red sandrock easier crumbles when it is exposed in the air or influenced by dry and damp alternation environment, which results in its bad engineering geology properties. So it has to be technologically dealt with when it is used as filling material of subgrade so as to improve its engineering properies and meet all engineerig criteria. Based on the analysis of former study data,and local characteristics of exposed red sandrock of this expressway, through experiment, it was studied from different angles, such as filling technoloty, construction technology. And a proper construction technology was gotten for this expressway. Red sandrock in this area has been seldom studied before, so the results in this paper are new supplements to it. And the results can be beneficial reference to future similar project.