Influence of coal mechanical properties and water content on generation characteristics of coal particles. (28th February 2022)

• Record Type: Journal Article
• Authors: Wei, Yingchun; Cui, Maolin; Yao, Zheng; Wang, Anmin; Cui, Baolei; Pan, Zhejun
• Is Part Of: International journal of oil, gas and coal technology. Volume 29:Number 4(2022)
• Page Start: 359
• Page End: 378
• Publication Date: 2022-02-28
• Subjects: coalbed methane -- coal particles -- mechanical properties -- water content; Petroleum as fuel -- Periodicals; Gas as fuel -- Periodicals; Coal -- Periodicals; Biomass energy -- Periodicals; Hydrogen as fuel -- Periodicals; 662.6
• Languages: English
• ISSNs: 1753-3309

Abstract

Coal particles have a great importance in the production of coalbed methane. To reveal the relationship between the coal mechanical properties and the coal particles characteristics generated by the coal samples with different coal rank, coal failure experiments in the natural state and water-saturated state under triaxial compression are performed. The effects of coal rank, coal mechanical properties and water content on the characteristics of coal particles generated are investigated. The results show that the water-saturated sample has a lower compressive strength than the corresponding natural sample. Coal with different rank shows various fracturing modes after failure. Compared with the natural sample, the water-saturated sample generates more amount of coal particles. As coal rank increases, the amount of coal particles shows a 'U' shape trend, while there is a negative exponential correlation between the amount of coal particles and the compressive strength of coal. [Received: June 3, 2020; Accepted: April 10, 2021]