复杂地表条件剖分折射法静校正处理方法探索

Probe into Dissecting Refraction Method Statics Processing under Complicated Surface Conditions

通过分析在复杂地区使用常规静校正处理方法所暴露的问题,提出采用折射波垂直剖分法对地震资料进行静校正。首先建立近地表折射波剖分模型,用等间距或不等间距的垂向网格把折射波分成若干个单元,每个单元的折射波速度近似为一常数,而不同单元间速度的变化则反映了整个近地表层速度的横向变化。在实际应用时可利用多张单炮记录相关正交求解速度。

Through analyses of found problems in traditional static correction used in complicated areas, put forward a refraction wave vertical dissection method to carry out the statics. To set up a near surface refraetion wave dissection model first, use equidistant and unequal-distant vertical grid to dissect refraction wave into a number of units, refraction wave velocity of every unit approximately a constant, while the velocity variation between units reflected whole transversal variation of near surface interval velocity. Multiple single-shot records correlative quadrature can be used to find out velocity in practice.