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Friction factor correlation for airflow through broken rocks and its applications in mine ventilation
International Journal of Mining Science and Technology ( IF 11.8 ) Pub Date : 2020-07-07 , DOI: 10.1016/j.ijmst.2020.05.003
Leyla Amiri , Seyed Ali Ghoreishi-Madiseh , Ferri P. Hassani , Agus P. Sasmito

The Atkinson equation along with its friction factor is commonly used to estimate pressure requirement in mine ventilation. However, friction factor correlation of flow through broken rock, typically found in blasted stope, gob, rock pit or block caving rock deposits, etc., is currently unavailable. Also, it is impractical to conduct direct measurements of flow resistance in an inaccessible broken rock zone. This paper aims to develop a new friction factor correlation of flow through broken rock that can be used directly in Atkinson equation. The proposed correlation is valid for broken rocks with diameter between 0.04 and 1.2 m and porosity ranging from 0.23 to 0.7.



中文翻译:

破碎岩石中气流的摩擦系数相关性及其在矿井通风中的应用

阿特金森方程及其摩擦系数通常用于估算矿井通风中的压力需求。但是,目前无法获得流经破碎岩石的摩擦因数相关性,通常在爆破的采场,采空区,岩坑或块状崩落岩沉积物中发现。而且,在难以接近的破碎岩石区中直接测量流动阻力也是不切实际的。本文旨在开发一种新的流经破碎岩石的摩擦因子相关性,该相关性可直接用于阿特金森方程式。所提出的相关性适用于直径在0.04至1.2 m之间且孔隙度在0.23至0.7之间的碎石。

更新日期:2020-07-07
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