以西商高速调查项目为例，分析了K11＋750~K12＋460处膨胀土滑坡的形成原因，结合该处滑坡的地形地质条件，提出支挡工程和排水工程的综合防治措施，为陕南地区各等级公路的建设及地质灾害防治工作提供依据。%This paper is based on the investigation project of Xi-Shang highway,analyzed the causes for the landslide expansion soil at K11+750~K12+460,combined with the topographic and geological conditions,proposed retaining engineering and drainage engineering comprehensive prevention and control measures,and provide the basis for the work of prevention and control of construction and geological disasters of all high-way in the southern area of Shaanxi province.
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