道真至新寨高速公路某滑坡稳定性分析与评价  

Analysis and Evaluation of Stability of a Landslide along Daozhen-Xinzhai Highway

作　　者：程卫军[1] 严俊峰 吴银亮[1] CHENG Weijun;YAN Junfeng;WU Yinliang(CCCC Second Highway Consultants Co.,Ltd.,Wuhan 430056,China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉430056

出　　处：《路基工程》2020年第3期214-218,共5页Subgrade Engineering

摘　　要：针对贵州省道真至新寨高速公路和溪至流河渡段(K159+850~K160+080)在建设过程中线路旁出现的不稳定滑坡,通过工程地质调绘和钻探,查明了该滑坡体工程地质和水文地质条件。根据其变形情况,对滑坡的成因、变形特征及稳定性进行了分析,并且对该滑坡进行了稳定性定量评价,经稳定性计算后,发现该滑坡在天然工况和降雨工况下稳定安全系数分别为1.037,0.925,在降雨工况下滑坡处于不稳定状态。最后提出了相应的治理措施,保证高速公路的正常运营。For the section from Hexi to Liuhedu(K159+850~K160+080)of Daozhen—Xinzhai highway in Guizhou province,instable landslide came out along the line.Depending on engineering geological surveying and mapping and drilling,the engineering geological and hydrogeological conditions of the landslide was found out by drilling;the genesis,deformation characteristics and stability of the landslide was then analyzed according to its deformation;furthermore,quantitative evaluation on the stability of landslide was carried out and,with the calculation,it was found that the safety factors of landslide in natural and rainfall conditions were 1.037 and 0.925,respectively,showing the landslide was instable under rainfall condition.Finally,the control measures were proposed to ensure the normal operation of highway.

关 键 词：道真至新寨高速公路 滑坡 稳定性分析 定性评价 治理措施 

分 类 号：P642.22[天文地球—工程地质学]