【摘要】 在实验室对岩石在温度影响下的声发射现象进行了初步的研究和探讨。认为长石细砂岩在温度影响下具有明显的声发射现象,并且随着温度的变化,声发射率也随之变化,具有两个声发射峰值区。声发射的振铃累积数在70~90℃发生急剧变化,表明70~90℃是长石细砂岩裂纹发育的门槛值。更多还原

【Abstract】 The acoustic emission phenomena of sandstone under the effect of temperature were investigated and discussed in laboratory.There were distinct acoustic emission phenomena in sandstone under the effect of temperature.The rate of acoustic emission had two peak values with the variation of temperature.During 70～90℃,accumulated acoustic emission counts varied rapidly,and it indicated 70~90℃ was the threshold for the development of sandstone cracking.更多还原