本文根据单孔声波测井、电火花、剪切锤、大距离放炮等不同振源的跨孔测试及岩心超声测试资料,利用纵横波波速及跨孔穿透信号的波形特征,振幅衰减,频率成分的变化、尾波面貌、横波分裂等,对秦山核电二期工程地基岩体的风化程度、裂隙发育程度、岩性均一性、岩体完整性、岩体各向异性等进行了定量评价。进而根据速度各向异性的图形、确定了岩体中应力的方向。为综合评价该工程地基稳定性提供了可靠依据。 In this paper, according to single-hole sonic logging, electric spark, shear hammer, large-distance blasting and other sources of cross-hole testing and core ultrasonic testing data, the use of P-wave velocity and cross-hole penetration signal waveform characteristics, amplitude attenuation, frequency Changes in composition, wake morphology, shear wave splitting, etc., Quantitative evaluation of the degree of weathering, crack development, lithological uniformity, rock mass integrity, rock mass anisotropy, etc. of Qinshan Nuclear Power Phase II project. Based on the graph of velocity anisotropy, the direction of stress in the rock mass was determined. It provides a reliable basis for comprehensive evaluation of the foundation stability of the project.