西部某机场高填边坡三维稳定性分析

Three-dimension stability analysis on high field-slopes at an airport in western China

对高填边坡的三维稳定性进行了分析研究。结果表明:三维稳定性分析能较好地评价边坡整体稳定性,克服了由于地形和地貌及其它地质条件的差异,造成各个计算剖面的二维评价结果不协调,不能为工程设计提供强有力支撑的缺点。这一结果有利于正确认识高填边坡的二维稳定性分析和三维稳定性分析结果的相互关系,合理评价该类高填边坡稳定性。

There are many high filled-slopes in the process of the construction of airports in western China. Their stabilities badly place limits on and influence on the design, construction process and operation (benefit). High filled-slope stabilities are usually studied by using two-dimension limiting equilibrium theory, but the results of different sections can't meet the need of engineering design because of difference of (topographical), geomorphological and other geological conditions. In this paper, based on the study of the geological conditions, the stability of a high filled-slope at an airport in western China is evaluated by using three-dimension limiting equilibrium theory, and the results can be useful in the optimum design of a slope.