Modeling and analysis method and device for predicting tunnel extrusion deformation, and storage medium

Abstract

The invention discloses a modeling and analysis method and device for predicting tunnel extrusion deformation, and a storage medium. The modeling method comprises the following steps of establishing ahistorical data set of tunnel extrusion deformation, wherein the historical data set is selected from a historical case and comprises multiple features used as training database parameters and used for describing data; performing parameter optimization on the historical data set to obtain an optimized database; and taking tunnel extrusion deformation degrees as classification standards, and performing multi-classification SVM training by utilizing the optimized database to obtain a multi-classification SVM model. The classifier training time can be shortened; tunnels are classified accordingto the deformation degrees; relatively good performance is achieved in prediction precision; and the seriousness of a potential extrusion problem can be estimated according to a predicted extrusion type.

Description

technical field [0001] The present disclosure generally relates to the technical field of tunnel deformation prediction, and in particular to a modeling and analysis method, device and storage medium for predicting tunnel extrusion deformation. Background technique [0002] During the construction of soft rock tunnels, due to the influence of high ground stress, the extrusion and large deformation of soft rock tunnels is one of the major geological disasters that often occur. During the collapse, the construction of the shield tunnel boring machine (TBM) was blocked, resulting in forced interruption of the project, budget overruns and construction delays, and sometimes may even lead to instability of the tunnel and casualties, such as the construction process of the West Scheldt River Tunnel in the Netherlands During the tunnel construction of the Yellow River Diversion Project, the roadheader was trapped for a long time due to the extrusion deformation of soft rock, which b...

AI Technical Summary

Problems solved by technology

During the collapse, the construction of the shield tunnel boring machine (TBM) was blocked, resulting in forced interruption of the project, budget overruns and construction delays, and sometimes may even lead to instability of the tunnel and casualties, such as the construction process of the West Scheldt River Tunnel in the Netherlands During the tunnel construction of the Yellow River Diversion Project, the roadheader was trapped for a long time due to the extrusion and deformation of soft rock, which brought serious consequences to the project.

[0003] The current research on soft rock extrusion large deformation tunnels mainly focuses on conventional qualitative and quantitative analysis, which cannot predict the large deformation of tunnel extrusion, let alone evaluate the severity of potential extrusion problems, which has great impact on tunnel design and construction. extremely adverse effects

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