浅析山区地震勘探数据野外采集方法

Analysis on Seismic Exploration Data Gathering in Mountain Region

山区地形复杂,浅层地震地质条件变化较大,地震施工困难,各种波干扰严重,记录质量较差。根据山区三维地震勘探的技术特点,以山西省某山区三维勘探为例,通过对岩石出露区、黄土覆盖区及坡积物堆积区进行试验分析,提出了相应技术方案及施工措施,有效的压制了干扰,提高了信噪比,使目的层反射波明显,得到了较理想的野外数据结果。

The topography in mountain region is changing rapidly and shallow seismic geological condition is varied, thus operation of seismic prospecting is rather difficult, various waves seriously disturbing reciprocally and producing rather poor recording quality. To take a 3D seismic exploration in a mountain region in Shanxi Province as anexample, based on technological characteristics of the 3D seismic exploration in mountainous region, corresponding technological schemes and operating measures are put forward through testings and analyses in rocky area, loess covered area and talus area. NOise is effectively suppressed , signal to noise ratio is inproved , the refletion wave from target is more clearer, and rather perfect field data are obtained.