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采用雷达技术对石太高速公路山区挖石方段路基路面进行检测分析,研究发现沥青路面发生翻浆、沉陷和龟裂病害的主要原因是地下水浸入路基导致路基顶面潮湿松散所致。通过采取在硬路肩下设置路基纵向渗沟,路面结构层中增设级配碎石排水层、贫水泥混凝土封水层等相应的处治技术措施,取得了良好的技术效果,避免了以往路面当年挖补、当年又破坏的循环维修工作。本项研究可供山区高速公路路面新建与维修养护时借鉴。
Radar technology was used to detect and analyze the roadbed in the dug excavation section in the mountainous area of Shitai Expressway. The main reason for the occurrence of the subgrade, subsidence and cracked disease in the asphalt pavement was that the groundwater infiltrating the subgrade caused the humid and loose surface of the subgrade. By taking the longitudinal embankment of embankment under the shoulder of hard road, the corresponding treatment measures of grading macadam drainage layer and lean cement concrete sealing layer are added in the pavement structure layer, and good technical effects are obtained, which avoids the previous excavation, The same time, destruction of the cycle of maintenance work. This study can be used as a reference for the new construction and maintenance of mountain highway pavement.