摘要
以某岩溶隧道为背景,采用二维弹塑性有限元方法对隧道开挖进行数值模拟计算,分析了隧道底部溶洞顶板安全厚度的影响因素,用支持向量机方法得出了能综合体现各影响因素的溶洞顶板安全厚度预测模型,并和多元线性回归得到的预测模型进行对比。计算结果表明,支持向量机预测模型较之多元线性回归模型,不但具有方便快捷的优点,而且具有更高的预测精度。
Taking some tunnel as the background, and by using FEM numerical simulation, the factors affecting the safe thickness of roof of karst cave are analysed; and forecasting model of safe thickness of roof is obtained by support vector machines （SVM） and stepwise regression analysis.The result of calculation indicates that, SVM forecasting model not only has the advantages of convenience and swiftness compared with the linear regression model, but also has higher precision of prediction.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2006年第6期1000-1004,共5页
Rock and Soil Mechanics
关键词
岩溶隧道
有限元
安全厚度
支持向量机
预测模型
karst tunnel
FEM
safe thickness
support vector machines （SVM）
forecasting model
