Optimization of gob ventilation boreholes design in longwall minin

• Published in: 矿业科学技术学报（英文版） Vol. 30; no. 6; pp. 811 - 817
• Main Authors: Saqib Ahmad Saki, Jürgen F. Brune, Muhammad Usman Khan
• Format: Journal Article
• Language: English
• Published: University of Engineering and Technology Lahore, Lahore 54890, Pakistan%Colorado School of Mines, Golden, CO 80401, USA 2020
• Subjects: Computational fluid dynamics; Explosive gas zones; Gob ventilation boreholes; Longwall mining

Gob ventilation boreholes (GVBs) are widely used for degasification in U.S.longwall coal mines.Depending on geological conditions,30-50％ of methane can be recovered from longwall gob using GVBs.A NIOSH funded research at the Colorado School of Mines confirmed that GVBs can efficiently reduce methane...