Experimental study on changes of infrared radiation energy in siltstone failure process under different loading rates
LEI Yueyu
LI Zhonghui
TIAN He
AIKEREMUJIANG·AIHEMAITI
LI Xueli
LOU Quan
Abstract：In order to study the influence of loading rate on infrared radiation energy of siltstone during loading failure,and quantit-atively analyze the change law of infrared radiation energy of siltstone during loading process,the infrared radiation experiments of siltstone under uniaxial compression at different loading rates were carried out.The results show that the peak stress decreases with the increase of loading rate.Under different loading rates,in difference mode,the maximum infrared radiation temperature ΔTmax has a good correspondence with the stress change,which can better reflect the damage of the sample,and the maximum temperature dif-ference of ΔTmax increases by 1.0-1.7℃.During the main rupture,cumulative infrared radiant energy increment ΔQ increases slowly with time.There is a power function relationship between ΔQ and mechanical work.With the increase of mechanical work,the cu-mulative infrared radiation energy increment increases first and then increases slowly.The range of infrared precursor ratio of speci-men damage under different loading rates is 0.02-0.285,and decreases with the loading rate.
Keywords：uniaxial compressionloading rateinfrared radiation energyrock failure mechanismdynamic disaster
Publication Date：2024-01-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 151-159 )