宁夏南部山区地震采集方法研究

Research on seismic data acquisition method in Ningxia south mountain area

宁夏南部在地貌上属黄土丘陵区,黄土覆盖厚度在40~300 m,地震工作条件极为困难。从近年来地震勘探工作着手,在收集并分析后期钻探对地震成果验证情况的基础上,分析了宁夏南部山区地震勘探技术难点,依据不同勘探阶段和地表条件,通过实例对比,提出各类型的工作方法和采集参数,总结了弯线、宽线,弯宽线等不同观测系统的应用前提、应用条件和应用效果,为在类似条件下开展地震勘探提供参考。

The landscape of Ningxia south mountain area is loess hilly-gully region,the loess overlay thickness is between 40 ~ 300 m,and the seismic exploration working conditions are very difficult. In this paper,from seismic exploration work in recent years,on the basis of collecting and analysing the late drilling validation to the seismic result,the authors analysed the difficulties of seismic exploration technology in south mountain area of Ningxia,according to the different exploration phase and the surface conditions,through comparisons of examples,various types of work method and the acquisition parameters were put forward,the application of premise,conditions and effects of different observation systems,such as the crook line,wide line,crooked wide line,and so on,were summarized,which can provide reference for seismic exploration in similar conditions.