一种快速预测施工隧道有害气体浓度方法

By combining intrinsic orthogonal decomposition and support vector machine, the concentration of harmful gases in construction tunnels can be predicted quickly and accurately, solving the problem of real-time monitoring of harmful gas concentrations in tunnels. This enables sensorless real-time ventilation control, ensuring the safety of the construction environment and the efficient operation of the ventilation system.

CN118152903BActive Publication Date: 2026-07-17DALIAN UNIV OF TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Filing Date
2024-01-31
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies are insufficient for rapid and accurate real-time monitoring and prediction of harmful gas concentrations in construction tunnels, resulting in inadequate control precision of ventilation systems, which makes it difficult to guarantee personnel safety, especially in high-altitude environments.

Method used

By combining intrinsic orthogonal decomposition and support vector machine, the airflow and harmful gas diffusion control equations of the ventilation environment in the construction tunnel are solved by dimensionality reduction, and an orthogonal basis coefficient prediction model is established to realize real-time prediction of harmful gas concentration and reduce reliance on sensors.

Benefits of technology

It significantly improves the speed and accuracy of predicting the concentration of harmful gases in construction tunnels, realizes sensorless real-time ventilation control, and enhances the safety of the construction environment and the operating efficiency of the ventilation system.

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Abstract

本发明公开了一种快速预测施工隧道有害气体浓度方法,包括:建立施工隧道通风过程空气流动及有害气体扩散控制方程组;求解控制方程组,获得空气流场及有害气体浓度场样本数据;将所述空气流场及有害气体浓度场样本数据,存储在的样本矩阵Ω之中;根据样本矩阵Ω得到协方差矩阵C;获取协方差矩阵C的特征向量υk和特征值λk;获取基函数φk以及φk的系数αk;将施工隧道通风系统风机运行时刻作为输入量,将对应时刻的基函数系数作为输出量,建立正交基系数预测模型;根据基函数φk及其系数αk,并通过正交基系数预测模型获得物理场预测结果。本方法在不需要辅助外部传感器的条件下,通过对有害气体扩散过程的降维求解,实现浓度分布实时预测。
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