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根据多次折射波的形成机理,描述多次折射波的基本特征和产生多次折射波的近地表结构,进一步分析选择不同激发井深对多次折射波的压制效果以及对地震信号频率和能量等反射特征的影响,给出多次折射发育地区激发井深的选择原则和方法,对提高复杂区地震记录的信噪比和品质大有益处。
According to the formation mechanism of multiple refracted waves, the basic characteristics of multiple refracted waves and the near-surface structure of multiple refracted waves are described. The suppression effect of multiple refracted waves with different excitation depths and the frequency and energy of seismic signals are further analyzed The reflection principle and method are given to give the choice of excitation well depth in multiple refraction development areas, which is of great benefit to improve the signal-noise ratio and quality of seismic records in complex areas.