摘要
三峡库区滑坡地质灾害数量众多,主要诱因为降雨。以该地区具有代表性的土质滑坡土体为对象,综合考虑了三峡库区1971年至2003年的230次滑坡地质灾害与降雨因素之间的关系,进行了室内降雨模型试验的设计,以探究其降雨产流及入渗规律。通过对试验结果的综合分析及比较,揭示了相应试验工况下的降雨产流及饱和-非饱和-非稳定入渗规律、地表冲刷及裂缝发育情况,同时也分析了降雨强度、前期累计降雨量及坡角三个因子对降雨过程中的坡面产流及入渗的影响。
There are numerous geologic hazards from landslide in Three Gorges Reservoir area, and the main inducement is rainfall. Here, taking the typical soil of this district＇s landslide as the object, and considering the relationship between the 230 geologic hazards from landslide and the rainfall in Three Gorges Reservoir area synthetically, a series of indoor rainfall＇ s model tests is carried out to explore the rainfall runoff and infiltration law of landslide soil. With the synthetical analysis and comparison to the results of the tests, the rainfall runoff law and saturated-unsaturated and unsteady infiltration law under corresponding test conditions are revealed, and the conditions of the surface erosion and fracture＇ s development under the corresponding test conditions are also revealed in detail. Simultaneously, the influencing ways of the rainfall intensity and cumulative rainfall and slope angle to the surface runoff and infiltration in rain process are analyzed.
出处
《水利与建筑工程学报》
2013年第5期183-188,193,共7页
Journal of Water Resources and Architectural Engineering
关键词
三峡库区
土质滑坡
降雨过程
产流-入渗规律
模型试验
Three Gorges Reservoir area
soil landslide
rainfall process
runoff-infifltration law
model test
