【摘要】 目前边坡稳定性评价的诸多方法或存在预测不准或缺乏成熟的理论依据。基于马氏距离判别分析理论,根据影响边坡稳定性的重要因素,选用重度、内摩擦角、粘聚力、边坡角、边坡高度、孔隙水压力比6项指标作为判别因子,建立了边坡稳定预测的距离判别分析模型;以工程实例建立了距离判别分析法预测边坡稳定性的线性判别函数,并对测试样本数据进行了预测。结果表明,该模型预测结果与实际情况一致,采用交叉确认估计法所得到的误判率为0。应用6个指标来反映边坡稳定性状况和应用距离判别法预测边坡稳定性高效、可行,误判率很低,是边坡稳定性评价的一种有效的新方法。更多还原

【Abstract】 Based on the main influencing factors on slope stability and Mahalanobis distance discrimination analysis theory,the model for slope evaluation is established here,including six indexes for reflecting slope stability: density,friction angle,cohesion,slope angle,slope height and pore pressure ratio.The linear discrimination function is obtained through training a large set of slope samples,and the model is applied to the practica1 engineerings.The results show that the Mahalanobis distance discrimination analysis model has such the excellent performances as high prediction accuracy,high efficiency and so on.更多还原