摘要
福建地处我国东南沿海地区,每年台风暴雨季期间都会有大量的滑坡发生。为研究已产生滑动带的滑坡体在强降雨条件下的渗流及稳定性变化,采用Seep与Slope软件对福建德华马坪滑坡进行了渗流场的模拟和稳定性的计算,得出了渗流场及稳定性的变化规律。结果显示:对于已存在有滑动带的马坪滑坡,坡顶区域范围内的雨水入渗已成为控制该滑坡体稳定性的关键因素。坡体的稳定性在降雨结束后的第一天最低,之后坡体的稳定性逐渐提高。其结果真实的反映了滑体稳定性现状和规律,最后提出了相关的治理措施。
Fujian is located in the southeast coastal area of China ,where lots of landslides are triggered by rainfall every year in typhoon rainstorm season .In order to study the changes of seepage and stability changes of the landslide which al-ready possessed a sliding zone under heavy rain ,the software Seep and Slope were used to simulate the seepage field and calculate the stability coefficient of the landslide of Maping ,Dehua ,Fujian .The change laws of its seepage field and sta-bility were obtained .The analysis indicate that regarding to Maping landslide ,the rainfall infiltration to the top of the landslide is the key factor in controlling the stability of the landslide .The stability reaches the lowest at the first day after a rainfall ,and then increases gradually ,which actually reflects the status and change laws of the landslide stability .At last ,the control measures of the landslide stability was put rorward .
出处
《水利与建筑工程学报》
2014年第5期66-72,共7页
Journal of Water Resources and Architectural Engineering
基金
国家科技支撑计划项目资助(2012BAK10B01-06)
关键词
台风暴雨
滑坡
饱和-非饱和
渗流特性
稳定性
typhoon rainstorm
landslide
saturation-unsaturation
seepage characteristics
stability
