复合地层盾构机推进速度SVM预测模型研究

摘要

在复合地层盾构法隧道施工中，如何提高盾构机推进速度一直是盾构机设计、施工人员研究的重点。以长沙轨道交通1号线五一广场到营盘路隧道工程为研究背景，现场采集盾构机掘进参数，应用SVM，建立了“五营”区间复合地层盾构机推进速度的预测数学模型，并对模型进行检测，检测结果表明该预测模型对推进速度预测的平均相对误差≤7％，验证了该模型对推进速度预测的有效性。%How to improve the excavation speed is always the important point for researchers in shield tunneling machines design and application in complex stratum.In this paper,taking the tunnel project of Changsha metro line 1 between Wuyi Square and Yingpan Road as background,the tunneling parameters of shield machine was collected.SVM is used to estab-lish the mathematical model of shielding speed prediction in the complex stratum of“WuYing”zone.And the test results of the model showed that the average relative error of the prediction model to predict the speed is≤7%,and demonstrated the effectiveness of the model in the shield tunneling machine speed prediction.