摘要
边坡的失稳受到降雨、植被等因素的影响。以2010年海南吊罗山滑坡实例为研究对象,从气候和植被的角度出发,考虑雨水渗流和植被破坏的影响;通过数值计算和三轴试验,分析了吊罗山滑坡的诱发原因及影响机理。研究发现:吊罗山湿热交替气候的降雨蒸发作用使红粘土出现缩胀性裂缝,以及山坡原有热带雨林被破坏后改种槟榔树,是滑坡发生的两个主要原因。
The instability of slope is affected by rainfall, vegetaion and other factors. Taking Hainan Diaoluo landslide in 2010 as the research object and considering rainwater seepage and vegetation destruction from the point of view of climate and vegetation, this paper analyzed ,the inductive factors and the impact mechanism of landslide by numerical calculation and triaxial tests. The results show that there are two main reasons inducing the Diaoluo Mountain landslide. One is the shrink and swell fractures of the red clay, which is caused by the ahemative action of rainfall and evaporation in hot and humid climates of Diaoluo Mountain, the other one is the replanting areca in original tropical rainforest.
出处
《自然灾害学报》
CSCD
北大核心
2014年第1期144-148,共5页
Journal of Natural Disasters
基金
国家科技支撑计划项目(2013BAK05B03)
关键词
滑坡
降雨
静止土压力系数
槟榔树
植物根系
三轴试验
landslide
rainfall
coefficient of static earth pressure
areca
plant root system
triaxial test
