光纤地震数据采集系统野外锤击试验及效果分析

Field Hammer Experiment and Effect Analysis of Optical Fiber Seismic Data Acquisition System

与传统的动圈式地震数据采集系统相比,光纤地震数据采集系统具有前端设备无需供电、抗电磁干扰能力强以及数据传输快等优势,是近年来地震勘探领域的研究热点。为此,介绍光纤地震数据采集系统的工作原理和工作流程,描述地震数据采集系统样机的组成。通过野外锤击试验和现场地震数据采集,对光纤检波器和动圈检波器进行了对比测试。试验结果表明,光纤地震数据采集系统具有和动圈地震数据采集系统相当的地震数据采集效果,而光纤地震数据采集系统的优势有助于解决传统地震数据采集设备存在的供电困难、易受电磁干扰及数据传输慢等问题。

Compared with the traditional moving coil seismic data acquisition system,the optical fiber seismic data acquisition system has the advantages of no power supply for the optical array,strong anti-electromagnetic interference ability,and fast data transmission.It is a research hotspot in the field of seismic exploration in recent years.This paper introduces the working principle and work flow of optical fiber seismic data acquisition system.Then the composition of the system is described.Through field hammer experiment and seismic data acquisition,the comparison test of optical fiber geophone and moving coil geophone is carried out.The experimental results show that the optical fiber seismic data acquisition system has the same acquisition effect as the moving coil seismic data acquisition system.While the advantages of the optical fiber seismic data acquisition system is helpful to solve the problems of difficult power supply,vulnerable to electromagnetic interference and slow data transmission of the traditional acquisition equipment.