基于多源信息融合的高原库区滑坡动态安全评价研究

Multi-source information fusion-based study on dynamic safety evaluation of landslide in plateau reservoir area

由于高原库区滑坡体的特殊高原地质构造,传统单一信息源的滑坡安全评价方法已经难以满足工程安全的需要。为此,采用多源信息融合技术、熵权法和层次分析法实现了数据信息的融合,基于监测数据构建了动态权重函数,并通过层次分析法建立了滑坡安全评价指标体系。通过对滑坡初始结构强度计算结果、滑坡的地质构造信息及监测数据的融合,分别由熵权法和层次分析法计算了三者的权重ω_(1)和ω_(2),进一步融合计算了中间层综合权重ω,依据边坡评价标准,实现了动态安全评价滑坡的目的。由工程实例可知:该评价方法可以较全面地评价高原库区滑坡的安全性态,评价结果与工程实际相符,为高原库区滑坡的评价工作提供了新的方法。

Due to the special geological structure of landslide mass in plateau reservoir area,the conventional landslide safety evaluation method with single information source is already difficult to meet the demands of engineering safety.Therefore,the multi-source information fusion technique,entropy weight method and analytic hierarchy process are adopted to realize the data information fusion,while the dynamic weight function is built up based on the relevant monitoring data,and then a landslide safety evaluation index system is established through analytic hierarchy process.Through fusing the calculation results of initial structural strength of landslide,the geological structure information of landslide and the monitoring data,the weightsω_(1) andω_(2) of them are calculated with entropy weight method and analytic hierarchy process respectively,and then the comprehensive weightωof the mid-layer is further fused and calculated,thus the dynamic safety evaluation of landslide is realized with the relevant slope evaluation standards.It can be known from the related actual engineering case that the safety behavior of the landslide in plateau reservoir area can be more comprehensively evaluated by this evaluation method and the evaluating results are consistent with the engineering practice and then provide a new method for the safety evaluation of the landslide in plateau reservoir area.