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如何建立适应内外因素共同作用机理的边坡整体安全度量模型,是边坡稳定性问题研究的内在要求和根本出发点。区分地震作用下岩石边坡整体安全影响指标的本质属性和外部因素,引入数据包络分析方法,建立了边坡整体结构风险预警工作模式,提出了风险预警工作步骤;按照决策单元形式化描述,确定岩石边坡整体安全结构风险预警样本的决策数据结构的表示方法;以岩石边坡工程整体安全结构风险预警标准DEA模型为基础,虚设理想预警样本,建立具有非阿基米德无穷小的支持地震作用下岩石边坡整体安全结构风险预警样本相对安全度量模型。模型应用于边坡震灾处置算例,得到了极大风险样本,为确定边坡风险监测重点提供了依据。
How to establish the overall slope safety assessment model to adapt to the interaction mechanism of internal and external factors is the intrinsic requirement and the fundamental starting point for the study of slope stability. This paper divides the essential attributes and external factors of the overall safety influence index of rock slope under the action of earthquake, introduces the data envelopment analysis method, sets up the working mode of risk pre-warning for the whole structure of the slope and puts forward the steps of risk early warning. According to the formal description of the decision- Determine the decision data structure of the early-warning samples of the overall safety structure risk of rock slope; Based on DEA model of pre-risk of the overall safety structure of rock slope, the hypothesized ideal early-warning samples and the establishment of a support earthquake with non-Archimedes infinity Relative Safety Measurement Model of Early Warning Model for Rock Safety Risk Assessment of Rock Slope under. The model is applied to the case study of slope disaster disposition and a great risk sample is obtained, which provides a basis for determining the focus of slope risk monitoring.