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<p>To investigate the dust transport patterns under different dust sources and their coupling conditions in fully mechanized mining faces, this study focuses on the 2–2 mining face at Xinjie Taigemiao mine. Using Fluent software, we investigate how the distribution of dust concentration on the coal face under different sources: shearer coal-cutting, hydraulic support movement, air intake, and their coupled effects. Results indicate that dust transport within the roadway is primarily governed by obstacles and airflow. The face wind velocity exhibits an overall low-high-low fluctuation pattern along the longitudinal direction. Dust-dense zones vary across different sources: cutting dust concentrates near the drums due to machine obstruction, while dust from support movement clusters near the pedestrian side. Air intake dust disperses uniformly throughout the mining face cross-section. Under the coupled dust source condition, dust concentration exceeds single-source levels with a pronounced additive effect. The maximum local dust concentration reached 2540.2&#xa0;mg/m³. The research findings effectively elucidate the dust transport and dispersion patterns in fully mechanized mining faces under varying dust source conditions, providing valuable reference for dust control layout in mining faces.</p>

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Dust transport and diffusion under individual and coupled dust source conditions in a fully mechanized coal mining face

  • 期刊论文

  • 发表日期：

    2026年3月17日

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  • Yongbo CAI,
  • Bingqian Yan,
  • Chunyang Zhang,
  • Yingjie Liu,
  • Zuo Sun,
  • Chao Xu,
  • Chi Li,
  • Xiaoyu Zhang

摘要

To investigate the dust transport patterns under different dust sources and their coupling conditions in fully mechanized mining faces, this study focuses on the 2–2 mining face at Xinjie Taigemiao mine. Using Fluent software, we investigate how the distribution of dust concentration on the coal face under different sources: shearer coal-cutting, hydraulic support movement, air intake, and their coupled effects. Results indicate that dust transport within the roadway is primarily governed by obstacles and airflow. The face wind velocity exhibits an overall low-high-low fluctuation pattern along the longitudinal direction. Dust-dense zones vary across different sources: cutting dust concentrates near the drums due to machine obstruction, while dust from support movement clusters near the pedestrian side. Air intake dust disperses uniformly throughout the mining face cross-section. Under the coupled dust source condition, dust concentration exceeds single-source levels with a pronounced additive effect. The maximum local dust concentration reached 2540.2 mg/m³. The research findings effectively elucidate the dust transport and dispersion patterns in fully mechanized mining faces under varying dust source conditions, providing valuable reference for dust control layout in mining faces.