Influence of Gas Extraction Process Elements on the Gas Migration Law in High-Gas Goaf Areas.

ABSTRACT: Gas gush in goaf leads to gas accumulation in local areas, which not only easily leads to excessive gas concentration in the corner of the working surface but also may induce gas explosion, which seriously threatens the safety of mine production. In order to study the influence of gas extraction technology on gas migration in gobs, a gob model is established based on experimental parameters, and the application effect of buried pipe extraction and high level borehole extraction technology in high gas gobs is analyzed by numerical simulation software (Fluent). The results show that (1) buried pipe extraction will cause the gas concentration in the gob to increase along the strike and dip direction, and the negative pressure at the extraction mouth will reduce the gas concentration at the pi

SUBMITTER: Wang L 

PROVIDER: S-EPMC11780440 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature