基于边坡单元的水库库岸稳定性层次分析与评价

目的]分析影响孟底沟水库库岸稳定的影响因素,为水库库岸稳定性评价提供新思路。方法]在工程地质条件分析及不良地质现象解译的基础上,运用边坡单元将各岸坡段划分为独立的研究对象,分析影响库岸稳定的诸多因素,把边坡单元的三维安全系数作为稳定性评价的基本指标,对影响边坡稳定的各因素采用层次分析法,建立基于边坡单元的库岸稳定性分段层次分析与评价方法。结果]将该方法运用在工程实例中,结果表明其具有一定的可靠性和实用性。结论]以边坡单元为研究对象,运用层次分析法可以有效地分析水库库岸的稳定性,为工程决策提供支持。

Slope Unit-based Application of Analytic Hierarchy Process in Stability Evaluation of Reservoir Bank

Objective] To analyze the influence factors of the Mengdigou reservoir bank stability in order to provide new train of thought to evaluate the stability of reservoir bank.Methods] On the basis of the analysis of the engineering geological conditions and the interpretation of unfavorable geological phenomenon, this paper classified the bank into different segments. Then using the principle of the slope unit, we then taken these segments as independent research objects and analyzed the factors affecting the bank stability. And then we used three-dimension factor safety of slope units as an index of the stability evaluation and used analytic hierarchy process(AHP) to analyze the factors affecting slope stability. Finally we established hierarchy analysis and evaluation methods for the stability of reservoir bank based on the slope unit.Results] The method was tested in the engineering practice, showing that the method is reliable and practical.Conclusion] Tanking the slope unit as the research object, using the AHP can effectively analyze the stability of reservoir bank, which can support the decision of project.