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The study aims to optimize forced ventilation parameters in large-section tunnels to improve air quality and worker safety during construction.

April 18, 2026BuildingsOpen Access

Research on Optimization of Forced Ventilation Parameters for Blasting Construction in Large-Section Tunnels Based on CFD

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Research demonstrates enhanced dust removal in tunnel construction, suggesting improved worker safety and cost-effectiveness.

The study aims to optimize forced ventilation parameters in large-section tunnels to improve air quality and worker safety during construction.
Combined computational fluid dynamics simulations with on-site measurements.
Investigated gas-solid two-phase flow theory to analyze dust and airflow behavior.
Conducted a two-factor orthogonal experiment for optimal ventilation parameter determination.
Performed economic analysis on ventilation configurations.
Initial airflow configuration divided into three stages affecting dust diffusion.
Average dust concentration in the breathing zone decreased from 36.8 mg/m3 to 1.5 mg/m3 post-optimization.
Optimal ventilation parameters included an outlet air velocity of 18 m/s and a duct-to-face distance of 40 m.
Achieved a 95.9% improvement in dust removal efficiency.
Cost savings of USD 4.39 per hour in electricity compared to higher air velocities.

Xin et al. (2026) studied this question.

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