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| Predicting boring parameters of TBM stable stage based on BLSTM networks combined with attention mechanism |
| ZHOU Xiaoxiong,GONG Qiuming,YIN Lijun,XU Hongyi,BAN Chao |
| (Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education,Beijing University of Technology,Beijing 100024,China) |
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Abstract The ascending branch of tunnel boring machine(TBM) tunnelling data provides rich information for real-time rock mass condition perception and the prediction of boring performance parameter. This paper proposed a bidirectional long short-term memory network combined with attention mechanism to predict the performance parameters in the stable phase of TBM tunneling. In our model,time series data of four main parameters are taken as the main input to extract the rock-machine interaction relationship,and the advance speed and RPM given in the stable phase are taken as auxiliary inputs to consider the human control behavior,and the output of the model is the predicted values of thrust and torque. Different from the traditional prediction model,the proposed model does not require geological parameters,and establishes the mapping relationship between control parameters and performance parameters by automatically learning the characteristics of the ascending branch data. In the process of model establishment,some data preprocessing techniques are used to correct the outlier data,filter noise and normalize data,etc.,and a method for segmenting the ascending and stable branch based on the torque-time curve is proposed. Relying on the Jilin Yinsong water supply tunnel project,the effectiveness and accuracy of the model are verified. The results show that the overall prediction effect of the proposed model is good,which can assist the intelligent construction of TBM with similar geological conditions.
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CHEN Weizhong1*, LIU Xinyu1, 2, YANG Jianping1, WANG Wei1, 2, ZANG Zhonghai3, DING Hongyuan3, ZHANG Zheyuan3, WANG Xiaogang3, SHI Zhengrong1. Development of a large-scale 3D physical model test system for underground energy storage caverns and its model experimental study[J]. , 2026, 45(6): 1615-1628. |
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