模糊综合评判法分析地震滑坡启程能量转换

地震滑坡启程能量转化分析对于后期滑坡动力学研究极为重要，因其影响因素较多，具有模糊性，目前还没有准确的定量计算公式。模糊综合评判法分析模糊问题具有明显的优势，能够综合考虑各种因素给出总体评价。选取地震加速度、岩体结构类型、控制性结构面特征、岩体完整程度、地层岩性、地下水、不利结构面与临空面的夹角7个因素作为地震滑坡启程剧动能量转换大小划分的主要因素，详细分析各个因素对能量转化的影响。采用逻辑分区法确定隶属函数，应用模糊层次分析法（FAHP）确定各因素的权重。在此基础上，运用模糊数学综合评判方法得出能量转化率等级，半定量地确定能量转化率大小。以东河口地震滑坡为例，应用模糊综合评判法对其启程能量转换分析结果客观合理，表明该方法是科学可行的，在同类理论研究中可以借鉴。

Analysis of energy conversion of earthquake-induced landslide based on fuzzy synthetic evaluation

The analysis of energy conversion during the set-out process of seismic landslide is very important for the late landslide kinetic theoretical studies.Because the analysis impacted by many complex influencing factors is fuzzy,there is no accurate quantitative calculation formula for energy conversion rate.Fortunately,the fuzzy synthetic evaluation method has obvious advantage in the analysis of fuzzy problems,which can take various complex factors into account to make an overall assessment.Therefore,the method can be adopted to determine the grade of energy conversion rate.After analyzing the effect of every factor on the energy conversion rate in detail,seven factors,such as seismic acceleration,structure of rock mass,characteristics of controlling structural planes,integrity of rock mass,stratum lithology,groundwater,and angle between the unfavourable interfaces and free surface,are selected as the major factors.Using fuzzy analytic hierarchy process,the important degree of the above factors characterized by the influencing weight is obtained.And the logic classification method is adopted to determine the membership function.On this basis,the fuzzy synthetic evaluation is then used to draw the grade of energy conversion rate with its value determined semi-quantitatively.The proposed method is applied to study the Donghekou earthquake-induced landslide;and the obtained results meet the objective reality,so as to indicate that the method is scientific and feasible.Consequently,it can be used for reference in other similar theoretical researches.