Research Article
Mining-Induced Stress-Fissure Field Evolution and the Disaster-Causing Mechanism in the High Gas Working Face of the Deep Hard Strata
Table 1
Coal and gas outbursts during the construction of Paner Coal Mine.
| | Coal seam | Elevation (m) | Amount of outburst coal (t) | Amount of outburst gas (m3) | Type | Cause |
| | B4-1 | -420 | 56 | 8000 | Outburst | Changing the form of support and a leaky roof | | B4 | -470 | 233 | 900 | Extrusion | Encountering tectonic structures when uncovering the coal | | B4-2 | -420 | 11.2 | 2000 | Extrusion | Encountering tectonic structures when uncovering the coal | | B4-1 | -420 | 22 | 800 | Extrusion | Encountering tectonic structures when uncovering the coal | | B4-1 | -420 | 16 | 2400 | Extrusion | Fissure development, coal uncovering, and blasting |
|
|
