Abstract
This paper proposes a new computational model to predict the earth pressure balance (EPB) shield performance during tunnelling. The proposed model integrates an improved particle swarm optimization (PSO) with adaptive neurofuzzy inference system (ANFIS) based on the fuzzy C-mean (FCM) clustering method. In particular, the proposed model uses shield operational parameters as inputs and computes the advance rate as the output. Prior to modeling, critical operational parameters are identified through principle component analysis (PCA). The hybrid model is applied to the prediction of the shield performance in the tunnel section of Guangzhou Metro Line 9 in China. The prediction results indicate that the improved PSO-ANFIS model shows high accuracy in predicting the EPB shield performance in terms of the multiobjective fitness function [i.e. root mean square error $(RMSE) = 0.07$ , coefficient of determination ( $R^{2}) = 0.88$ , variance account $(VA) = 0.84$ for testing datasets, respectively]. The good agreement between the actual measurements and predicted values demonstrates that the proposed model is promising for predicting the EPB shield tunnel performance with good accuracy.
Highlights
With the progress of manufacturing technology, larger and increasingly complex tunnel projects are being constructed in many Chinese cities [1]–[4]
The most influential parameters were identified through principle component analysis (PCA), and an improved particle swarm optimization (PSO)-adaptive neurofuzzy inference system (ANFIS) model was established to predict the advance rate of the earth pressure balance (EPB) shield tunnelling
The proposed model was applied to a case study of the Guangzhou Metro Line 9 tunnelling project
Summary
With the progress of manufacturing technology, larger and increasingly complex tunnel projects are being constructed in many Chinese cities [1]–[4]. One of the main aims is to optimise the performance of the drilling system. Accurate performance of the tunnel boring machine (TBM) can be employed to reduce the risks associated with high costs and time consumed during the tunnelling process [5]. Overestimating can be a negative effect for the utilization of project resources [6]. If the tunnelling process is addressed in an appropriate manner, the risks related to tunnelling projects will be decreased considerably [7]–[12].
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have