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为了在斜坡危险性区划中考虑岩体结构的控制作用,将粗糙集和模糊模型识别理论用于区域斜坡岩体结构识别,并结合信息量法对斜坡单元进行空间危险性预测。尝试在指标中考虑深部岩体结构特征和岩层变形构造(断层、岩层曲率),将该方法应用于巴东新城区库岸斜坡危险性区划。结果表明:巴东新城区滑坡的主要影响因素有坡向和岩层倾向关系、坡角和岩层倾角关系、构造条件,可将斜坡分为3种结构类型。不同结构类型斜坡在危险性评价时各指标的影响程度或权重不同,可将巴东新城区划分为4个危险性等级,与现有滑坡比较验证了结果的合理性。
In order to consider the control of rock mass structure in the slope risk zoning, the theory of rough set and fuzzy model identification is applied to the identification of rock mass structures in the region. The space risk prediction of slope units is carried out by using information method. Attempt to consider the structural features of deep rock mass and deformation structure (fault and rock curvature) of the deep rock mass in the indicator, and apply this method to the hazard division of bank slope in new urban area of Badong. The results show that the main influencing factors of the landslide in Badong New City area are the relationship between the slope direction and the rock strata, the relationship between the slope angle and the rock dip, and the tectonic conditions. The slopes can be divided into three types of structures. Different types of slopes in the risk assessment of the indicators of the degree or weight of different, can be divided into four new Badong District, the risk level, compared with the existing landslide to verify the rationality of the results.