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Abstract Aiming at the respirable dust hazards caused by restricted space, dense equipment layout, and high dust generation intensity during rapid excavation in low-seam coal mines with a seam height below 2.85 m, this study investigated the cross-scale coupled evolution mechanism of airflow and dust in low-height excavation roadways. An onboard integrated dust control and removal technology combining “source suction purification” and “airflow diffusion control” was proposed.
1. Introduction Coal dust generated during coal mining threatens the health of coal miners [1,2]. In addition, it may cause serious accidents such as explosions [3], which brings great challenges to coal mine production and management. To solve the problem of coal dust in coal mines, researchers continue to explore and gradually develop spray dust reduction technology [4].
Introduction As the leading energy source in China, coal is very abundant, accounting for 96% of the primary energy resources (Elliott et al., 2017; Peng et al., 2019; Yuan, 2016). According to statistics, coal accounted for 70% and more than 60% of China’s energy production and consumption before 2017, but the figures decreased to 69.3% and 57.7% in 2019, respectively.
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