1.Tunnel and Underground Engineering Design Branch,Shandong Provincial Communications Planning and Design Institute Group Company Limited,Jinan 250000,China
2.College of Transportation,Jilin University,Changchun 130022,China
To promptly detect, evaluate, and address potential traffic risks in highway tunnels, ensuring the safe and efficient operation of tunnels, a dynamic estimation method for tunnel operational risk states was proposed based on spatial-temporal Transformer network. Tunnel traffic flow holographic detection and key cross-section aggregation information as inputs was utilized, the spatial convolution and temporal LSTM was employed by proposed model for unsupervised extraction of spatiotemporal distribution features of different tunnel traffic operational states. Through extensive sample training of Transformer network layer parameters,it aims to capture the distribution and variances of tunnel traffic states in a high-dimensional risk feature space. This facilitates the estimation of operational risk of tunnel traffic flow. The effectiveness of the proposed method is verified by using real tunnel traffic detection data, and the accuracy of tunnel operation risk estimation is about 96%.
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