The seismic CT method in measuring rock bodies

地震计算断层摄影术(CT ) 方法从节扫描首先在医药科学使用了的 X 光检查的基本原则被导出。方法在分开的地上凿穿记录在射击和接收装置之间的 P 波浪到达。用从 2D 的速度信息地震 P 波浪到达倒置，我们能在岩石和土壤身体中决定速度的分发。这篇论文介绍使用地震 CT 方法为隧道工程并且到检测岩石的结构的一个实际盒子为做第一到达时间反复的倒置利用 SIRT 算法。与另外的探索方法相比，它更有效、精确。

The seismic computed tomography （CT） method is derived from the basic principles of X-ray section scanning first applied in medical science. The method records P-wave arrivals between shots and receivers in separate boreholes. Using the velocity information from 2D seismic P-wave arrival inversion, we can determine the distribution of velocity in rock and soil bodies. This paper introduces a practical case of using the seismic CT method for detecting the structure of the rocks for tunnel engineering and to utilize SIRT algorithms for doing first arrival time iterative inversion. Compared with other exploration methods, it is more efficient and accurate.