Effect of Temperature on Ultrasonic Wave velocity in Coal Roof Sandstone
In this paper, the regulation of ultrasonic wave spreading in sandstone at common temperature and after being baked at high temperature was researched in laboratory. The sandstone took form upper plank of coal bed in Jiaozuo.And effect of temperature on both the developing process of damage crack and the regulation of the sandstone quality decrease also were studied. The results show that velocity of ultrasonic wave will vary with the temperature changes, and it will decrease when the temperature increases over 200℃.The loss of sandstone quality will augment as the temperature arise, too.
sandstone ultrasonic wave high temperature
ZHAO Hongbao CHEN Lunjian YIN Guangzhi Zhang Weizhong
College of Resource and Environmental Sciences, Chongqing University, Chongqing 400030;Key Laborator HeNan Polytechnic University, Jiaozuo 454003
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
485-488
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）