香丽高速公路K39滑坡稳定性研究与防治  

Stability Study and Prevention of Landslide at K39on Shangri-La to Lijiang Expressway

作　　者：魏家旭 周文皎 张玉芳 WEI Jia-xu;ZHOU Wen-jiao;ZHANG Yu-fang(Yunnan Construction and Investment Holding Group Co.Ltd.,Kunming 650000,China;China Academy of Railway Sciences Co.Ltd.,Beijing 100081,China;Railway Engineering Research Institute,China Academy of Railway Sciences Co.Ltd.,Beijing 100081,China)

机构地区：[1]云南省建设投资控股集团有限公司,昆明市650000 [2]中国铁道科学研究院集团有限公司,北京市100081 [3]中国铁道科学研究院集团有限公司铁道建筑研究所,北京市100081

出　　处：《公路》2020年第3期29-35,共7页Highway

基　　金：云南省交通运输厅科技计划项目,云交科教2018-34。

摘　　要：香丽高速公路K38+955~K39+095段,主要以高陡路堑方式从斜坡坡脚通过,受雨季连续的强降雨影响,坡体出现不同程度变形滑动的现象。现场对该滑坡的地形地貌、地层岩性、岩土体结构特征和水文地质条件等进行了详细勘察,并对其滑坡性质、成因机制进行了研究,运用不平衡推力法对滑坡进行了稳定性分析。结果表明:该边坡仍处在不稳定状态,在暴雨工况下仍有可能继续变形破坏。因此,根据滑坡推力的计算结果,提出了有效的综合整治措施,可为当地同类滑坡防治工程提供借鉴。Taking the landslide sections on K38+955-K39+095of Shangri-La to Lijiang Expressway as the study object,the section route mainly passes through the foot of the slope by excavation.Affected by the continuous heavy rainfall in rainy season,the slope appears different degrees of deformation and sliding.The landform,stratigraphic lithology,rock and soil structure characteristics and hydrogeological conditions of the landslide are investigated in detail.The nature and mechanism of the landslide are analyzed,and the stability of the landslide is analyzed by using the unbalanced thrust method.The results show that the slope is still in an unstable state and may continue to deform and damage under rainstorm conditions.Therefore,according to the calculation results of landslide thrust,effective comprehensive control measures are put forward to provide reference for similar local landslide control projects.

关 键 词：高陡路堑边坡 滑坡性质 失稳破坏 边坡稳定 防治工程 

分 类 号：P642.22[天文地球—工程地质学]