Mining of the upper protective coal seam is widely practiced in China for coal mine safety,
but relief gas may present a new risk of blasting. To control the relief gas effectively, a strain …

As coal resources become exhausted in shallow mines, mining operations will inevitably
progress from shallow depth to deep and gassy seams due to increased demands for more …

The reasonable selection of the first mining seam in coal seam group is of critical importance
for the effective prevention and control of gas disasters during coal mining. At present, the …

This study investigates the deformation and the resultant pressure relief of highly gassy coal
seams where a double seam mining operation takes place at lower depths at the Wulan …

Coal is a type of solid-state combustible organic rock, which is transformed from plant
remains by complex biochemistry, physical chemistry and geochemistry effects also known …

The protective seam mining technology is the most effective and economical method in
realizing the safe mining of outburst-prone coal seams. To study the effects of remote lower …

The No. 8 coal seam in the Huaibei coal mine area is a soft, thick coal seam with low
permeability. This area has a high frequency of coal and gas outbursts. Considering the …

As mining depths increase, new challenges, such as gas drainage, gas outbursts and rock
bursts induced by mining extraction, have emerged, particularly in gassy, multiple-seam coal …

The simulated material model was used to simulate the formation and distribution of
overburden fractures induced by ascending mining. The fracture evolution law was …

Goaf-side entry driving in underground coal mines could greatly improve coal recovery
rates. However, it becomes more difficult to maintain stability, especially in deep coal mines …