山区公路滑坡灾害问题及对策分析以云南元(江)磨(黑)高速公路为例

随着西部公路建设的蓬勃发展,越来越多的高等级公路必须穿越山区丘陵地带,这样必然导致大量的公路滑坡的出现,危及公路的正常运行及安全。本文以云南元(江)磨(黑)高速公路为例,在分析公路沿线自然环境条件及地质构造条件等的基础上,研究公路沿线的地质灾害的特点及危害,重点研究公路沿线所发育的滑坡的分布特征、危害、形成机制及整治对策和措施。研究表明,山区公路滑坡不仅与滑坡发育的工程地质条件有关,而且与工程设计方案及公路建设过程施工方案等人为因素有关。

ANALYSE ON THE LANDSLIDE HAZARD AND ITS PREVENTION COUNTERMEASURE IN MOUNTAINOUS EXPRESSWAY

With the development of highway system in western China, more and more expressway has been built in mountainous regions. Many landslides may occur as a result of expressway construction, and could threaten the normal operation and safety of highway. In this paper, natural environment conditions and geological structural conditions of Yuanjiang - Mohei expressway in Yunnan Province are analyzed. Characteristics and risks of geological hazards along the expressway are studied. Their distribution characteristics and forming mechanism of landslides as well as its future development trends and control measures are also assessed. It is concluded that the landslides on mountainous roads are not only related to the engineering geological conditions, but also related to wrongful project designs and incorrect construction methods.