摘要
基于滑坡区地质环境,通过区域地质调查,大比例尺平面图测绘,滑坡微地貌和变形破坏特征测量籍调查,室内岩土体试验等手段,对康县十字坡滑坡的特征和形成机制进行了系统研究。研究成果表明,该滑坡为小型碎石堆积土滑坡,降雨、不合理的人工活动及滑坡区高陡的地形是诱发滑坡变形的主要因素。在认识滑坡形成机制的基础上,采用多种极限平衡计算方法,并结合滑坡所处的地质环境,评价该滑坡在天然、降雨、地震及降雨和地震耦合作用下的稳定性,为该滑坡的治理提供理论指导。
The paper studied the features and formation mechanism of Shizipo landslide by means of such methods as plan large-scale mapping,landslide damage and deformation characteristics of micro-topography measurement of cadastral surveys,indoor rock and soil testing according to the results of regional survey in Kangxian County.Research results show that the accumulation of gravel soil for small landslide,rainfall,human activities and unreasonable high and steep terrain landslide area are the major factors leading the deformation-induced landslides.In the understanding of landslide mechanisms,based on calculations using a variety of limit equilibrium methods,combined with the landslide geological environment in which to evaluate the decline in natural rainfall,earthquakes and seismic coupling effect of rainfall and the stability of the landslide governance to provide theoretical guidance.
出处
《甘肃地质》
2012年第4期68-72,共5页
Gansu Geology
关键词
滑坡
稳定性
降雨
地震
康县
landslide
stability
rainfall
earthquake
Kangxian County
