灰岩声波波速和力学参数之间的关系研究  

Study on Relations Between Acoustic Wave Velocity and Mechanical Parameters for Limestone

作　　者：谢佳 XIE Jia(Yueyang Highway&Bridge Engineering Corporation,Yueyang 414000,China)

机构地区：[1]岳阳市公路桥梁基建总公司,湖南岳阳414000

出　　处：《湖南理工学院学报（自然科学版）》2020年第1期34-37,共4页Journal of Hunan Institute of Science and Technology(Natural Sciences)

摘　　要：首先利用非金属超声波仪器设备测量风化灰岩试样的纵波波速和横波波速,然后对试样开展单轴静抗压试验,对试验结果进行统计分析,得到纵波波速与横波波速和岩石单轴静抗压强度、静弹性模量及静泊松比之间的关系,并给出相应的拟合关系式.研究结果表明:纵波波速和单轴静抗压强度、纵波波速和静弹性模量之间具有良好的线性正相关性;横波波速和单轴静抗压强度、横波波速和静弹性模量之间也具有线性正相关性,但相关性不如纵波波速显著;纵波波速和静泊松比、横波波速与和静泊松比之间的相关性差.对于实际工程应用,可以根据给出的拟合关系式和纵波波速测量结果预测灰岩的单轴静抗压强度与静弹性模量.Acoustic wave velocity tests on weathered limestone samples were carried out to obtain velocity of longitudinal wave and transverse wave propagating in the samples using nonmetal ultrasonic instrument.Uniaxial static compressive tests on the measured samples were conducted after the acoustic wave velocity tests have been finished.Statistical analysis of the test results was made in order to study relations between the uniaxial static compressive strength and the acoustic wave velocity,the static modulus and the acoustic wave velocity,and the static Poisson's ratio and the acoustic wave velocity respectively.The fitting formulas to those relations were given.The results show that,there are significant linear positive corrections between the longitudinal wave velocity and the uniaxial static compressive strength,and the longitudinal wave velocity and the static modulus.The linear positive corrections between the uniaxial static compressive strength and the transverse wave velocity,and the static modulus and the transverse wave velocity are less significant than those of the longitudinal wave velocity.The correction between the static Poisson's ratio and the longitudinal or transverse wave velocity is poor.Based on the given fitting formulas and the obtained acoustic velocity,both the uniaxial static compressive strength and the static modulus of limestone can be well predicted for engineering application.

关 键 词：岩石力学 纵波波速 横波波速 单轴静抗压强度 静弹性模量 静泊松比 

分 类 号：TU41[建筑科学—岩土工程]