关中环线阳郭段滑坡灾害调查与防治对策

Investigation and protection of landslide in the Yangguo segment of Guanzhong Loop Highway

为进一步研究公路边坡滑坡灾害的形成机理和原因,找出影响其破坏程度的各种因素,并提出灾害防治对策建议,采用实地调查和理论分析的手段对陕西关中环线阳郭段进行了研究。查明了研究路段边坡滑坡的概况,对7处主要滑坡点的形态、成因和发展趋势进行了分析;从上边坡和下边坡两个方面阐释了滑坡产生的原因,认为地形地貌、地层岩性、人类活动、降雨和水文地质条件以及排水系统和植被覆盖度为影响滑坡发育的主要因素;最后针对滑坡灾害提出了加强地表和地下排水、边坡防护和设置抗滑桩等防治对策。研究成果具有一定的适用性,可为公路工程防减灾提供一定的依据。

In order to study the formation mechanism of landslide in highway, and to find out the in fluence factors of damage and the proposals for disaster prevention and control, field survey and the oretical analysis were used to investigate the Yangguo Segment of Guanzhong Loop Highway. The general situation of landslide in the segment was found out and the configuration, origin, and devel opment of the landslides in the 7 main landslide spots were analyzed. The causes of landslide was analyzed from both upper slope and lower slope and topography, landforms, rocks, human activi ties, rainfall, geological conditions, drainage system and vegetation coverage were considered to be the main factors influencing the development of landslide. Prevention measures to landslide, such as strengthening surface and subsurface drainage, consolidating slope protection and setting antislide piles, were proposed. The conclusions reached and measures proposed are adaptable, and can be used in highway engineering to provide some references for disaster mitigation.