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结合宜巴高速公路郑家垭弃土场典型实例,通过引入主成分分析,并运用数值模拟技术,对6种影响典型弃土场边坡稳定性因素进行分析,获得影响弃土场边坡稳定性的敏感因素。分析结果表明,弃土场边坡滑面处土体的强度参数以及边坡的临空面形态对其边坡稳定性影响较大,容重和坡率对弃土场边坡稳定性影响较小,结果与其他分析法结果一致。因此认为主成分分析法得到的结果具有较高的准确性。
Based on the typical example of Chengjiasia spoil field on Yiba expressway, by introducing principal component analysis and applying numerical simulation technique, the six kinds of slope stability factors affecting the typical spoil site are analyzed, and the stability of slope affecting the spoil field is obtained Sensitive factors. The analysis results show that the strength parameters of the slope slip surface and the surface shape of the slope have a great influence on the slope stability, and the influence of the bulk density and slope rate on the slope stability of the spoil ground is small , The result is consistent with other analytical results. Therefore, the principal component analysis that the results obtained with high accuracy.