基于信息熵对滑坡系统的稳态分析  

Steady state analysis on landslide system based on information entropy

作　　者：范华[1] 杨华舒[1] 王邦阳 彭鑫龙 王飞[1] 

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093

出　　处：《工程勘察》2015年第7期30-35,共6页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金(41462013;51069003;50869003);昆明理工大学精品课程项目(10968137)

摘　　要：信息熵反映了滑坡过程中各相关因素的贡献度,可用来定量计算各个评价指标的权重。基于信息熵原理,结合万州地区的22个典型滑坡体,计算了相关权重值,建立了基于熵权的稳态评估方法,模型建立过程中得到的各因子权重,可作为类似滑坡体稳定性评估的重要依据。通过吴家湾—实验小学段的连续6个滑坡原型,验证了这种新方法的适用性,为滑坡体的稳态评价提供了一种有效途径。评估结果结合地质环境情况分析表明,该地区滑坡失稳的主要影响因子包括:坡脚淹没与冲刷,坡高,坡角,滑坡带的粘聚力。Information entropy reflects the contribution degree of the relevant factors during slipping,which can be used to quantitatively calculate the weight of each evaluation index. Based on information entropy method,combined with 22 typical landslides in Wanzhou district the assessment method of stability degree of entropy is established,and this model can be used to calculate the relevant weights,which could be the important evidence to assess the stability of landslides. Through the experiment section in six consecutive landslides of Wujiawan primary school,it is confirmed that this is an efficient way to verify the applicability of this new method for evaluating the steady-state landslide. The assessment results combined with the geological environment analysis show that the main factors of slope instability in the region include the toe inundated with erosion,slope height,gradient and cohesion of landslide zone.

关 键 词：边坡工程 滑坡 信息熵 因子权重 稳态分析 

分 类 号：TU457[建筑科学—岩土工程]