【作者】 王德刚； 胡涛骏； 叶银灿；

【Author】 Wang De-gang, Hu Tao-jun,Ye Yin-can (The Second Institute of Oceanography, SOA, Hangzhou 310012, China)

【机构】 国家海洋局第二海洋研究所；

【摘要】 弹性波测试基于波动力学理论,可以综合反映岩体的物理力学性质,十分适用于岩体稳定性评价。地震波和声波测试同属于弹性波测试范畴,但在实际测试工作中发现不同频率的弹性波速度不一致。通过对频率差别较大的地震波和声波测试分析,介绍了弹性波测试理论;利用统计方法对某水电站坝区平硐声波和地震波测试数据进行了相关分析,建立了此地区地震波和声波速度关系,得到了经验公式;并总结了影响弹性波(地震波、声波)速度的主要因素(频率、测试位置等);最后得出对同一岩体,不同频率的弹性波速度是不同的,声波测试的速度略高,一般高于地震波5%~10%左右的结论。更多还原

【Abstract】 Elastic wave testing based on wave mechanics can comprehensiveness reflect the physical mechanic property of bedrock and is very fit for base rock stability criterion .Seismic and acoustic wave testing are both belong to the elastic wave testing, but in the practical application, the wave velocity is different to a certain extent due to the frequency difference. In the paper , via setting the seismic wave and the acoustic wave which have obvious frequency difference for an example to introduce testing theory. The author use the seismic and acoustic wave data gathered from the flat cave to do some relativity statistical analysis and the experience formula is obtained ,then summarize the factors that have influence on the elastic wave (Seismic wave,Acoustic wave)velocity. Eventually, give the conclusion that the velocity of elastic wave with different frequency is discrimination and the acoustic wave velocity is higher than the seismic wave velocity to about 5%~10 % percent.更多还原