贵州页岩对公路工程的危害及防治措施

The Hazards and Preventive Measures of Shale to the Highway Projects in Guizhou Province

已有的工程实践表明,页岩在大气环境或干湿循环作用下,极易风化、碎落,对公路建设有很大的危害。本文通过对贵州省一条山区公路20年来的观察记录,在查阅大量资料的基础上,认为页岩作为软质岩,在公路工程活动中对公路危害很大。但由于长期以来人们对页岩的工程性质认识不足,导致公路通过页岩地段病害频频出现。因此,掌握页岩的工程特性,正确选择针对危害的防治措施,将可以减少公路后期的维护和病害的治理。

The existing highway engineering shows that the shale weathered and spalled easily in the atmosphere or the wet and dry cycle, so it is a great harm to highway construction. Consulting the observation record of the mountain road in Guizhou Province in the past 20 years and many other materials, the author pointed out that the shale , as a soft rock, is great hazard on the road in the highway engineering activities. However, as for the lack of knowledge of shale , the fre-quent shale diseases have been caused. Thus, taking advantage of the engineering properties of shale, the correct choice of hazard control measures will be able to reduce maintenance and disease management of the road later.