【摘要】 基于属性数学理论,建立岩土边坡地震崩滑预测与危险性分级的属性识别模型。模型包括单评价指标属性测度分析、样本多评价指标综合属性测度分析和属性识别3个方面。在分析岩土边坡地震崩滑影响因子的基础上,综合考虑岩土边坡所处地质背景、岩体结构类型和地层岩性组合、地形地貌以及水文地质条件,选取岩土体特性、新构造运动特性、坡高、坡角、年均降雨量和场地地震烈度6个参数作为岩土边坡地震崩滑综合评价的指标,并确定指标的分级标准;构建评价指标属性测度函数,计算单指标属性测度值和样本综合属性测度值,进行岩土边坡属性测度分析;应用置信度准则对岩土边坡样本的地震崩滑状况进行属性识别。利用建立的模型对天然边坡和路堑边坡实例进行评价,得到的结果与实际情况一致,说明给出的属性识别模型既能够应用于天然边坡又能够应用于路堑边坡的地震崩滑预测和危险性分级。更多还原

【Abstract】 Based on the attribute mathematical theory,the attribute recognition model used in the prediction of the earthquake-induced landslides and the fatalness classification was established.The proposed model included three aspects: the analysis of the attribute measurement of single index,the analysis of multi-index synthetic attribute measurement of samples,and the attribute recognition.By comprehensively considering the geological background of the rock and soil slope,the structural types of the rock mass,the lithologic combination,the topography and the hydrogeologic condition,six parameters including the characteristics of the geotechnical body,the characteristics of the neotectonic movement,slope height,slope angle,the annual average precipitation,site seismic intensity were selected as the indexes for the synthetic assessment of the earthquake-induced landslides and the criteria for the classification of the slope earthquake-induced landslides were determined.In order to conduct the analysis of the attribute measurement of the slope samples,the attribute measurement functions were constructed to compute the attribute measurement of single index and synthetic attribute measurement.The identification and classification of the fatalness assessment of the slope samples were attributively recognized by the confidence criterion.By using the established model,evaluation was carried out on both the natural slope and the cutting slope.The obtained assessment results agree well with the actual records.It indicates that the proposed attribute recognition model can be applied to the identification of the earthquake-induced landslides and the classification of the fatalness assessment of both the natural slope and the cutting slope.更多还原