Research on infrared radiation characteristics of pre-cracked coal sample under loaded breaking
CHENG Fuqi
LI Zhonghui
YIN Shan
WEI Yang
SUN Yinghao
Abstract：Uniaxial compression test was conducted on pre-cracked coal sample,and infrared radiation temperature and its change rule of the pre-cracked coal sample under loaded breaking were researched.The experimental results show that infrared radiation temperature curve will mutate in process of loaded breaking of the pre-cracked coal sample,and the infrared radiation temperatures of the pre-cracked coal samples with different angles will suddenly increase during main rupture.The mutation rate of infrared radiation temperature increases first and then decreases with increase of pre-cracked angle during main rupture,and the mutation rate of infrared radiation temperature of the pre-cracked coal sample with 45° is the largest.The change rule of infrared radiation of the pre-cracked coal sample is closely related to load and pre-crack,which can reflect internal rupture of macroscopic defective coal sample under load.
Keywords：coal-rock dynamic disasterpre-cracked coal sampleloaded breakinginfrared radiation temperatureuniaxial compression
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 44-49 )