摘要
由于路基开挖,川藏铁路规划区K208大型古滑坡群局部复活,威胁道路安全。在分析滑坡区工程地质条件的基础上,利用FLAC3D建立滑坡地质模型,模拟滑坡在未开挖、开挖后和治理后,分别在天然工况、暴雨工况以及地震工况下的剪切变形分布特征。安全系数计算结果表明,未开挖时,边坡在3种工况下均处于稳定状态;开挖后,边坡在天然工况和地震工况下处于基本稳定状态,在暴雨工况下处于不稳定状态;治理后,边坡在3种工况下均处于稳定状态。
The big landslide group at K208 of planning area of Sichuan Tibet Railway has locally revived as a result of road excavation. As thus, the road is in danger. On the basis of engineering geological condition analysis of landslide area, a geological model is constructed by using FLAC3D to analyze the deformation of landslide. The distribution characteristics of shearing deformation of slope in nature, rain and earthquake conditions before excavation, in excavating and after engineering treatment are simulated respectively. The safety factors for each condition have been calculated. It shows that： （a） the slope is stable before excavation; （b） the slope is basically stable in nature and earthquake condition after excavation, but instable in rain condition; and （c） the slope is stable in three conditions after engineering treatment.
出处
《水力发电》
北大核心
2016年第11期42-46,共5页
Water Power
基金
中国地质调查局项目(12120113038000)
中国中铁二院工程集团有限责任公司科研计划(二院科字201303)
关键词
滑坡
稳定性分析
数值模拟
FLAC3D
川藏铁路规划区
landslide
stability analysis
numerical simulation
FLAC3D
planning area of Sichuan Tibet Railway
