摘要
陡峭的地形条件、软弱的岩土体组合、新构造运动条件是滑坡形成的基本条件,地震及极端季候条件是导致滑坡发生的直接诱发因素,而人类不合理的开挖、人工绿化灌溉、地震及持续降水则是今后滑坡体局部复活的重要因素.利用传递系数法,对滑坡体的稳定性进行验算,发现铁三小Ⅰ,Ⅱ,Ⅱ_1,Ⅲ号滑坡体在自然状态下均处于稳定—基本稳定状态,在地震及暴雨状态下处于基本稳定欠稳定状态.
A steep topography,soft soil and rock structure and neotectonic conditions will trigger a landslide,earthquake or extreme climate.Human excavation,artificial afforestation,and continuous rainfall would be the important factors for their recurrence.Here the stability results of the Tiesanxiao landslide were presented by the transfer coefficient method,showing that the Ⅰ,Ⅱ,Ⅱ_1 and Ⅲ landslides thereof are in a stable state under the natural condition,but will become unstable when an earthquake or rainstorm occurs.
出处
《兰州大学学报(自然科学版)》
CAS
CSCD
北大核心
2015年第3期339-343,350,共6页
Journal of Lanzhou University(Natural Sciences)
基金
国家重点基础研究发展计划(973计划)项目(2014CB744703)
国家自然科学基金面上项目(41172328)
中央高校基本科研业务费专项资金自由探索项目(lzujbky-2014-267)
关键词
滑坡
形成条件
稳定性分析
兰州
landslide
formation condition
stability analysis
Lanzhou