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地质力学学报:2012,18(2):97-109,186
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缓倾滑坡地质力学模型研究——以冯店滑坡为例
(中国国土资源航空物探遥感中心, 北京 100081)
STUDY ON THE GEOMECHANICAL MODEL OF LANDSLIDE WITH LOW DIP ANGLE STRATA STRUCTURE: TAKING FENGDIAN LANDSLIDE AS AN EXAMPLE
(China Aero Geophysical Survey & Remote Sensing Center for Land and Resources, Beijing 100083, China)
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投稿时间:2011-12-14    
中文摘要: 在国内外缓倾滑坡研究的基础上,从滑坡形成机制出发,建立缓倾滑坡地质力学模型,采用数字滑坡技术结合地面调查获取滑坡规模、滑动面倾角、后缘拉裂槽积水深度等参数,代入模型表达式可获得滑坡的临界摩擦系数,进而获取滑坡的总下滑力和总阻滑力。提出临界摩擦系数的概念及求取方法,临界摩擦系数与缓倾滑坡的易滑性(或稳定性)直接相关,分析表明滑坡的临界摩擦系数与滑体规模(滑动面长与宽)、滑动面倾角正相关,与滑体重量反相关,滑坡后壁倾角在60°-90°范围的变化对缓倾滑坡易滑性的影响很微弱。
Abstract:On the basis of research at home and abroad, starting from the landslide mechanism establish geomechanical model of landslides with low dip angle strata, all the parameters in the model, such as landslide size, slip angle, back edge ripping slot seeper depth and so on, were obtained by digital landslide technology and fields investigation and put them into the model formula then landslide critical friction coefficient can be obtained, and landslide total down-slide and total resistance slippery force shall be get. This is the first putting forward the concept of critical friction coefficient and calculating methods, and the coefficient directly related to the slippery ability or stability of the landslide. Analysis shows that the critical friction coefficient and landslide sliding body size (the length and width of the sliding surface), sliding plane obliquity are positive correlation, with landslide weight inversing relationship. The influence of the dip angle of the back wall changing in 60°-90° on slippery ability of the landslide with low angle strata is very weak.
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王治华,杜明亮,郭兆成,等,2012.缓倾滑坡地质力学模型研究——以冯店滑坡为例[J].地质力学学报,18(2):97-109,186.DOI:
WANG Zhi-hua,DU Ming-liang,GUO Zhao-cheng,et al,2012.STUDY ON THE GEOMECHANICAL MODEL OF LANDSLIDE WITH LOW DIP ANGLE STRATA STRUCTURE: TAKING FENGDIAN LANDSLIDE AS AN EXAMPLE[J].Journal of Geomechanics,18(2):97-109,186.DOI:

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