The determination of “dual-carbon” puts forward more stringent requirements for methane
emission reduction in the coal industry. Gas extraction technology, as an important means of …

Coal permeability is a key parameter that affects the drainage of coal bed methane (CBM).
Owing to the lower original permeability of coal seams in China, more attention was paid to …

Combined with the coal mining process of a high gas coal mine in Jinzhong, Shanxi
Province, this paper discussed the evolution mechanism of the gas safety extraction …

The development of coalbed methane (CBM) is not only affected by geological factors, but
also by engineering factors, such as artificial fracturing and drainage strategies. In order to …

The prevention and control of stress relief gas have crucial influence on safety of coal mine,
it is not only the inevitable requirement of safe production, but also an effective way to …

Coalbed methane is a risk of coal mining safety while being an important energy source,
and gas extraction is the most effective treatment method. However, roadway and borehole …

Determining the width of the stress relief zone on roadway surrounding rocks is the premise
to optimize drilling borehole effect and increase gas extraction efficiency. In this study, a new …

In view of the existing problems of stope roadways, which are difficult to maintain under the
influence of high ground and mining-induced stresses, the structural characteristics and …