边坡稳定性的Fuzzy AHP和AHP对比研究  

Comparison research of Fuzzy AHP and AHP for slope stability

作　　者：吕伟[1] 胡荣华[1] 

机构地区：[1]江苏地质矿产设计研究院,江苏徐州221006

出　　处：《西安科技大学学报》2013年第3期307-312,342,共7页Journal of Xi’an University of Science and Technology

摘　　要：滑坡问题是地质灾害研究领域中的重要和典型问题,目前的研究手段主要以模拟实验、有限元数值模拟方法、Fuzzy AHP方法和AHP方法,其中Fuzzy AHP方法和AHP方法能研究得出影响边坡稳定性各因素之间的相互量化关系,从而具有更有针对性地研究边坡稳定性问题的特点,得到了学术界和工程界的广泛运用。为了对比和分析Fuzzy AHP和AHP方法在边坡稳定性问题中运用的优缺点,找出能准确和快速地计算出主要影响边坡稳定性各因素之间的相互量化关系的方法,首先建立边坡稳定性因素递阶层次分析体系,引入U1(边坡坡度),U2(边坡高度),U3(地层岩性),U4(岩体完整性RQD),U5(坡向与岩层产状关系),U6(内摩擦角),U7(粘聚力),U8(地下水变化),U9(过程降雨量),U10(人类工程活动)等主要影响边坡稳定性的10个因素,再分别采用Fuzzy AHP和AHP方法计算影响因素的权重,进而可以对比2种方法在计算过程和计算结果方面的不同,得出了Fuzzy AHP具有计算简便,结果精度稍差,AHP方法具有计算结果精度高,计算过程复杂的特点,为实际边坡防护设计提供了有效的选择依据。Landslide is an important and typical problem in the research of geological disasters.The current research methods include simulation,finite element,Fuzzy AHP and AHP,among which Fuzzy AHP and AHP can come to the quantitative relationship between factors influencing the stability of slopes.The characteristics of being more targeted in studying slope stability makes Fuzzy AHP and AHP applied widely in academic and engineering circles.With the aim at comparing the advantages and disadvantages of Fuzzy AHP and AHP in slope stability problem to find a way which can accurately and quickly calculate the quantitative relationship of main factors influencing slope stability,system of hierarchical analysis is constructed by bringing in slope grade,slope height,lithology,rock mass integrality,relation between aspect and attitude of rock formation,internal friction angle,cohesion,variation of groundwater,amount of precipitation,human engineering activity,and weight of each factor is calculated based on Fuzzy AHP and AHP.Through the comparison of calculation process and results of these two methods,conclusion is gotten that Fuzzy AHP is with simple calculation and slightly worse precision while AHP has high precision but complicated calculation results,providing effective choosing basis for actual slope protection design.

关 键 词：FUZZY AHP AHP 边坡稳定 权重 

分 类 号：TU45[建筑科学—岩土工程]