Prediction of Excavation Speed of Earth Pressure Balance Shield Based on WOA-XGBoost
Regarding the prediction of excavation speed of earth pressure balance shield,to improve the performance of the prediction model in each stratum,the excavation data in various strata is collected,and an excavation speed prediction model based on the XGBoost model optimized by WOA is proposed.The excavation data is subjected to non-excavation state data exclu-sion,abnormal data exclusion and SG smooth-ing processing.14 excavation parameters are selected as input parameters,and a 5-fold cross-validation method is used to train the model.The prediction results of the prediction model are analyzed,and the average MSE value of each group is 1.626 9,indicating that the model has a high accuracy in the prediction of excava-tion speed.The analysis of the prediction re-sults show that the predicted values have a good predictive effect within the distribution range of excavation speed,demonstrating universality in application to various strata,and are generally lower than the actual values.
NETL
NSTL
万方数据
