Study On The Formation And Treatment Measures Of Expansive Soil Landslide In Luo-Shang Expressway

Highway Engineering in expansive soil slope landslide is a common failure form of slope, and treatment more difficult a geological disasters. This paper relying on Yu-Shang line Luonan to Chakoupu section of expansive soil landslide on the specific engineering, focus on the expansive soil slope landslide formation mechanism and treatment measures of the, accumulation to treat expansive soil landslide of experience and guidance for construction.Through the experiment and investigation of study area topography and geomorphology, expansive soil mineral composition, physical properties, to identify the genesis and engineering properties of Luo-Shang highway expansive soil, put forward for the expansive soil in the area is the identification, classification method, analysis of expansive soilslope in landslide, slip collapse and landslide etc. The main failure form, with traction, structure and tectonics, shallow, multiple sliding and swarms distribution regularity and timing. The failure mechanism of expansive soil landslide is analyzed and the treatment measures are put forward.Combining the expansive soil slope landslide of Luo-Shang Expressway actual conditions, the expansive soil slope prevention measures, drainage system design and construction measures and through the free expansion rate and expansive soil slope landslide fissure position selection of appropriate treatment measures. Luo-Shang Expressway left K11+940~K12+110 and right K14+75~K14+960expansive soil cutting slope landslide as an example, summed up the flexible cage retaining wall construction management principle and construction technology, analysis of the anti-slide pile, anchor frame beam and supporting sewer comprehensive protection technology in the expansive soil slope in construction process and specific requirements. Through real engineering validation, the proposed method is effective and the effect is remarkable.