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

作者：Gu Cheng Zhuang^*; Yang Hong Fa; Hu Xie Wen; Zeng Jin Xiu; Luo Gang

来源：Yantu Lixue/rock and Soil Mechanics, 2012, 33(SUPPL. 1): 297-302.

• Complex factors
• Energy conversion rates
• Free surfaces
• Fuzzy analytic hierarchy process
• Fuzzy synthetic evaluation
• Influencing factor
• Logic classification
• Major factors
• Objective reality
• Quantitative calculation
• Rock mass
• Seismic accelerations
• Structural planes
• Theoretical research
• Theoretical study

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.

• 出版日期2012
• 单位西南交通大学