学 院 土木工程学院 专业班级 11地质①班 学 号 学生姓名 指导教师 提交日期 2015年6月4日 摘 要 本文针对“”雅安地震时甘洛县田坝镇挖夯村二组木吉滑坡,阐明了滑坡区域地质环境,并详细研究了滑坡的工程地质条件,区域地质条件,对地层岩性进行分析,对滑坡的岩体结构和己经产生的变形破坏现象进行了详细的调查和分析,确定滑坡的基本变形特征,初步判断木吉滑坡为牵引式滑坡。分析了滑坡的滑动面以及滑床的特征,同时分析了滑坡的形成机制,以及各种因素对滑坡形成的影响。影响滑坡稳定性的因素有地层岩性、地形地貌、地质构造、水文地质条件、气象、地震活动、人类活动等。 根据木吉滑坡主要受降水和地震等因素的影响,进行了分工况进行研究,运用slide软件,采用库伦-摩尔模型,通过简化Bishop法对滑坡的几种工况进行分析,确定其稳定性系数。随后运用传递系数法对滑体进行条分,然后算出各工况下的稳定性系数。结果表明由于暴雨工况下洪水水位的变化以及雅安地区地震的影响对滑坡的稳定性影响很大。 通过对木吉滑坡稳定性进行分析之后,对滑坡的滑坡发展变化趋势及危害性预测,对滑坡提出了裂缝封填+抗滑桩、裂缝封填+桩板墙(抗滑桩+挡土板)两种防治性意见。 关键词:木吉滑坡;影响因素 ;滑坡特征 ;稳定性分析与评价 ABSTRACT According to "" earthquake Ganluo when Tian Ya dig Nanba rammed village two groups Muji background landslide, This article explains the landslide regional geological environment and a detailed study of landslide engineering geological conditions, regional geology, the formation lithology analysis of rock mass structure and has produced the phenomenon of deformation landslide destroyed a detailed investigation and analysis, Landslides basic deformation characteristics, the initial judge Muji traction landslide landslide analyzed landslide sliding surface and the sliding bed features. Simultaneous analysis of the formation mechanism of the landslide, and the influence of various factors on the formation of the landslide, landslide stability factors are lithology, topography, geological structure, hydrogeological conditions, weather, seismic activity, human activity. According to Muji landslide and earthquake mainly affected precipitation and other factors, the division conducted a case study using slide software, using the Coulomb - Moore model is analyzed by Bishop method landslide several conditions to determine its stability factor. Then transfer coefficient method using slider body is slice, and