Acoustic emission characteristics of water-saturated coals in uniaxial compression experiment
TANG Shu-heng
YAN Zhi-feng
ZHU Bao-cun
ZHANG Song-hang
ZHANG Jia-zan
Abstract：In order to investigate the fracturing characteristics of coal reservoir, the uniaxial compression experiment was conducted for water-saturated coals,and the acoustic emission testing was carried out simultaneously. The results indicate that water-saturated coals oeeurre compression deformation first, then fracture, and finally are destroyed. Based on both the acoustic emission characteristics and stress-strain curves characteristics, the fracturing process of water-saturated coals were classified into three types: burst open (Ⅰ), rupture (Ⅱ) and stable (Ⅲ). Influenced by the sampiing direction, the fracturing processes are different. There are type Ⅰ and type Ⅱ without type Ⅲ when the axial of specimens parallel to the face cleats, and type Ⅱ and type Ⅲ without type Ⅰwhen the axial of specimens perpendicular to the face cleats.
Keywords：water-saturated coalsuniaxial compressionacoustic emissionfracturing process
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 37-41 )