基于超声波测试的岩体完整性分析

Rock Mass Integrity Analysis Based on Ultrasonic Testing

基于岩石动态力学参数与岩石基本物理力学参数的关系,可以研究岩石动态力学参数评价岩石的完整性。该文运用超声波测试技术,测得岩石的纵波和横波波速,结合弹性波在一维介质中的传播理论,计算得到岩石的动弹性模量。经过分析发现,动弹性模量随着密度的增大呈线性增大,B取样孔的斜率大于A取样孔,说明B取样孔的岩体完整性较好;对现场钻孔弹模测试试验数据进行了计算,发现岩体完整性结果与声波法分析一致,验证了室内声波法评价岩体完整性的可行性,为发展岩石超声波测试技术提供了参考。

Based on the relationship between rock dynamic mechanical parameters and rock basic physical mechanical parameters,rock dynamic mechanical parameters can be studied to evaluate the integrity of rock.In this paper,ultrasonic testing technology is used to measure the longitudinal and transverse wave velocities of rocks.Combined with the propagation theory of elastic wave in one-dimensional medium,the dynamic elastic modulus of rock is calculated.It is found that the dynamic elastic modulus increases linearly with the increase of density,and the slope of sampling hole B is greater than that of sampling hole A,indicating that the rock mass integrity of sampling hole B is good;through the calculation of the field borehole elastic modulus test data,it is found that the rock mass integrity results are consistent with the acoustic method analysis,which verifies the feasibility of indoor acoustic method to evaluate the rock mass integrity,and provides a reference for the development of rock ultrasonic testing technology.