Island outburst coal seam strong and weak coupling structure multi-disaster integrated prevention and control method

• Main Authors: HUO XIAOQUAN, ZHAI CHENG, MA LIQIANG, FANG YAJIE, QIAN ZIWEI, XU JIZHAO, ZHENG YANGFENG, HUANG WEI, YUE DONG
• Format: Patent
• Language: Chinese; English
• Published: 18.10.2022
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; MINING OR QUARRYING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; SHAFTS; TUNNELS

The invention discloses an island outburst coal seam strong and weak coupling structure multi-disaster integrated prevention and control method, which comprises the following steps of: laying a floor roadway on a lower overlying rock layer below a coal seam of an island working face, integrating multi-disaster integrated prevention and control measures into the floor roadway, and continuously draining accumulated water in goaf areas on two sides of the island working face; after completion, drilling a gas extraction partition hole in a coal pillar adjacent to the goaf, cutting off a channel through which gas flows to the coal roadway from the goaf, and injecting high-strength cement grout into two sides of the coal roadway to enhance the strength of the coal body and reduce deformation of the coal roadway; due to the fact that the rock burst phenomenon of the island working face roadway appears seriously, after grouting reinforcement is conducted on a coal seam, a strong-weak coupling structure is formed by a