有色金属科学与工程2024，Vol.15Issue(1)：105-114,10.DOI:10.13264/j.cnki.ysjskx.2024.01.013
单轴压缩下不同饱和度红砂岩横波特征研究
Experimental study on the acoustic parameters of red sandstone affected by water saturation
摘要
Abstract
To study the influence of saturation on the ultrasonic shear wave propagation law of rocks,with red sandstone as the research object,ultrasonic shear wave propagation tests were conducted with frequencies of 50,100 and 200 kHz under different saturations,and the variation law of saturation and frequency on shear wave acoustic parameters were analyzed.The results show that the shear wave velocity decreases nonlinearly with increasing saturation,and the amplitude attenuation coefficient increases nonlinearly with increasing saturation,both of which meet the cubic function relationship and are highly correlated.The overall analysis shows that the influence of saturation on shear wave velocity is greater than that of the amplitude attenuation coefficient,and the fitting parameters of the amplitude attenuation coefficient can better reflect the changes in physical quantities of rock samples.Based on the comprehensive consideration of sensitivity and determination coefficient,it is suggested to use 100 kHz as the dominant frequency of ultrasonic shear wave testing for water-bearing sandstone in the future.The research results can provide a reference for the development of rock ultrasonic testing technology under different saturations.关键词
饱和度/超声波横波/横波波速/幅值衰减系数/入射频率Key words
saturation/ultrasonic transverse wave/shear wave velocity/amplitude attenuation coefficient/incident frequency分类
数理科学引用本文复制引用
程锦山,管华栋,王观石,汪永超,林强..单轴压缩下不同饱和度红砂岩横波特征研究[J].有色金属科学与工程,2024,15(1):105-114,10.基金项目
国家自然科学基金项目资助(41462009) （41462009）
江西省高等学校井冈学者特聘教授岗位资助项目(205201200003) （205201200003）
江西省教育厅科学技术研究资助项目(GJJ190499) （GJJ190499）
江西理工大学人才培养资助项目(205200100112) （205200100112）
桥梁无损检测与工程计算四川省高校重点实验室2021年度开放基金项目(2021QYY01) （2021QYY01）
