Influence of saturation level on the acoustic emission characteristics of gas hydrate-bearing coal.

ABSTRACT: To study the effects of gas hydrates on the prevention and control of coal and gas protrusions, this paper reports the results of acoustic emission experiments on coal bodies containing gas hydrates with different saturation levels. The results showed that few acoustic emission events were generated in the elasticity stages of coal bodies containing gas hydrates, and the first sudden increase in the number of ringing counts generally occurred before and after the yielding point. Additionally, the acoustic emission events in the yielding stage were more active, and the cumulative number of ringing counts increased faster. The peak ringing counts appeared around the damage point, and a small number of acoustic emission events were still generated after destruction of the coal samples. The cu

SUBMITTER: Yu K 

PROVIDER: S-EPMC10944516 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature