Gob-side entry driving process for small coal pillar of extra-thick coal seam

• Main Authors: LI ZHIGUO, WANG YUGUO, ZHANG YIAN, XIAO YONGGANG, ZHANG AIJIE, GUO WEI, LIU DECHUN, DAI YEBIN, WANG YONG, LI GANG
• Format: Patent
• Language: Chinese; English
• Published: 22.08.2023
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The invention discloses an extra-thick coal seam small coal pillar gob-side entry driving technology. The technology comprises the following steps that (1) a small coal pillar roadway supporting technology is researched; (2) researching a small coal pillar mine pressure monitoring and treatment technology; (3) fire prevention and extinguishing safety technology research under the small coal pillar condition; and (4) water control safety technology research under the small coal pillar condition. Compared with the prior art, the method has the advantages that 1, a safe and reliable small coal pillar roadway supporting technical scheme is researched, formulated and successfully implemented; 2, a perfect mine pressure monitoring system is established, mine pressure monitoring multi-system data is efficiently processed and analyzed, and mine pressure monitoring early warning can be realized; 3, fire prevention and extinguishing are safe and reliable, oxidation of residual coal in the goaf is reduced, and spontaneo