摘要
三峡库区地质灾害类型以滑坡、崩塌(危岩)为主,其发育受地层岩性、地质构造、谷坡形态、坡体结构等地质因素的控制,是发育的内因。降雨、库水位升降以及人类工程活动等是滑坡、崩塌发生的主要诱发因素。由降雨和库水位升降在坡体内产生的饱水加载、静水压力、动水压力效应为主要诱发作用力。监测表明:涉水滑坡变形破坏与降雨强度和库水位的升降速率明显相关。以秭归县白水河滑坡、卧沙溪滑坡为例,分析滑坡在降雨和库水位升降等诱发因素下的变形特征及诱发因素对滑坡变形影响的差异。
Landslides and rockfalls are the main types of geological disasters in the Three Gorges Reservoir Area, which controlled by internal factors including lithology, geological structure, slope geometry, slope structure etc, and also affected by rainfall, water level fluctuation and human activities. Rainfall and water level fluctuation caused saturated loading, hydrostatic pressure and hydrodynamic pressure, which are the main factors of unstable. The monitoring shows that the displacement of landslides has a high correlation with rainfall intensity and the rate of rise and fall of reservoir water level. This paper presents a study on the deformation characteristics of Bashuihe landslide and Woshaxi landslide in Zigui county and the difference of deformation behavior caused by triggering factors.
出处
《资源环境与工程》
2013年第1期50-55,59,共7页
Resources Environment & Engineering
关键词
三峡库区
崩塌滑坡
控制因素
诱发因素
监测分析
Three Gorges Reservoir Area
landslides and rockfalls
control factors
triggering factors
monitoring data analysis
