论文部分内容阅读
我们在(苏联的)鞑靼自治共和国进行了纵波和横波联合使用的地震试验,目的是作岩性研究。采用的横波类型为 SH,激发方法为特殊的“成对极化爆炸法”。经过特殊处理,可将每对极化爆炸后记录的 P 波消除,SH 波放大。P 波剖面通过常规方法获取。一般说来,因为 SH 波的波长较短,所以,横波地震剖面对地质层位的描述更细致一些。将P 波剖面和 SH 波剖面结合起来使用,可以得到比较精确、详细的区域地质资料。由于同时对层速度以及两类波的旅行时进行了研究,所以,可以检测出岩相的变化和速度的各向异性。
We conducted a seismic test using a combination of longitudinal and shear waves in the Tartar Autonomous Republic (Soviet Union) for the purpose of lithology research. The type of shear wave used is SH, and the excitation method is a special “twin polarized explosion method.” After special treatment, each pair of polarized waves recorded after the P wave elimination, SH wave amplification. P wave profiles were obtained by conventional methods. In general, because of the short wavelength of the SH wave, the description of the geological horizon by the S-wave seismic profile is more detailed. The combination of P wave profile and SH wave profile can get more accurate and detailed regional geological data. Since the velocities of the layers and the traveling time of the two types of waves are studied at the same time, it is possible to detect the change of the lithofacies and the anisotropy of the velocity.