土坡各参数对土坡稳定性的影响研究

建立了边坡稳定性分析的平面直角坐标系，得到了该坐标系下的边坡稳定分析瑞典圆弧法的积分表达式。以简单均质黏性土坡为研究对象，结合 Matlab 遗传算法工具箱，建立了基于瑞典圆弧法的遗传算法优化模型，实现了边坡稳定分析最小安全系数的自动寻优。通过实例进行验证和对比，表明该方法是行之有效的，经大量实例计算，得到了土坡参数对土坡安全系数 Fs 、滑移体断面面积 A、滑移体周长 L 的影响的规律。

The Study on the Influence of Soil Slop Parameters to Soil Slopes Stability

A plane right-angle coordinates for the stability of soil slopes analysis is set up.And the integral expression of the stability analysis based on the Sweden arc method has been obtained under this coordi-nates.The research object in this paper is simple homogeneous clay slope.A genetic algorithm optimization model based on the Swedish arc method has been established by combining with Matlab Genetic Algorithm Toolbox.It can realize automatic optimization to the minimum safety factor during slope stability analysis. An example is given and compared with other methods,which indicates that this method is effective and feasible.After the calculation to a great deal of instances,a lot of information have been received,such as the safety factor Fs to soil slope,slip body cross-sectional area A,the impact law to sliding body circumfer-ence L.