三分量地震映像技术在浅层裂隙调查中的应用  

The Application of Three-Component Seismic Imaging Technique in Investigating of Shallow Fractures

作　　者：施剑[1] 刘江平[1] 曾祥芝[1] 

机构地区：[1]中国地质大学地球物理与空间信息学院,武汉430074

出　　处：《工程地球物理学报》2009年第2期157-161,共5页Chinese Journal of Engineering Geophysics

摘　　要：地震映像法在工程地质调查中应用广泛,三分量地震勘探技术能够获得丰富的地学信息。本文采用纵波激发,三分量检波器接收的三分量地震映像技术对某测区进行浅层裂隙调查试验。通过对三分量数据进行处理和解释,成果剖面特别是X分量上裂隙反映明显。裂隙的响应特征表现为同相轴的扭曲和错断。X分量的加入,弥补了Z分量对于某些方向裂隙的不敏感,增加了解释的可靠性。调查结果表明该方法用于浅层裂隙调查行之有效。Seismic imaging method has been used widely in the investigation of engineering geology. We can obtain abundant geological information with the three - components seismic technique. In the paper we combine the P - wave source and three - component geophone to investigate the shallow fractures in the experimental area. After the data processing and interpretation, the fractures appear obviously in the seismic profiles, especially in X component. There is the phenomenon of distortion and faulting in the events. Because Z component is not sensitive to the fractures of some directions, the reliability of interpretation is increased by the addition of X component information. The result shows that the method is effective to the investigation of shallow fractures.

关 键 词：三分量地震勘探 地震映像 裂隙调查 

分 类 号：P631.4[天文地球—地质矿产勘探]