• ISSN: 1674-7461
  • CN: 11-5823/TU
  • 主管:中国科学技术协会
  • 主办:中国图学学会
  • 承办:中国建筑科学研究院有限公司

基于时间卷积网络的断层破碎带隧道围岩变形预测研究

Research on Temporal Convolutional Network for Predicting Surrounding Rock Deformation in Tunnels Crossing Fault Fracture Zones

  • 摘要: 针对断层破碎带隧道围岩变形预测这一难题,本研究旨在解决传统方法难以精准捕捉围岩变形高度非线性与非平稳特性的问题。研究采用基于时间卷积网络的智能预测模型,通过扩张卷积与残差连接机制提取多尺度时序特征,并融合多监测断面信息。利用广佛环线GFHD-2标8个监测断面开挖后第11天至第20天的拱顶下沉实测数据进行验证。结果表明,所有断面预测期内的平均相对误差介于0.94%至2.31%之间,最大相对误差小于3.5%,决定系数R2普遍高于0.995。研究结论证实,该模型能有效克服传统方法的局限性,实现高精度时序预测。其意义在于为隧道穿越高风险断层破碎带提供了可靠高效的智能化变形预测手段,对保障施工安全与指导动态支护设计具有重要工程应用价值。

     

    Abstract: To address the challenge of predicting deformation in tunnel surrounding rock within fault zones, this study aims to overcome the limitations of traditional methods in accurately capturing the nonlinear and non-stationary characteristics of surrounding rock deformation. The research employs an intelligent prediction model based on time convolutional networks, which extracts multi-scale temporal features through expansion convolution and residual connection mechanisms while integrating data from multiple monitoring sections. Validation was conducted using measured roof settlement data from eight monitoring sections along the Guangfo Ring Line GFHD-2 between days 11 and 20 after excavation. Results demonstrate that the average relative error across all sections ranged from 0.94% to 2.31%, with maximum errors below 3.5% and determination coefficients R2 consistently exceeding 0.995. These findings confirm the model′s effectiveness in overcoming traditional method constraints and achieving high-precision temporal prediction. This approach provides a reliable and efficient intelligent deformation forecasting tool for tunneling through high-risk fault zones, offering significant engineering value for ensuring construction safety and guiding dynamic support design.

     

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