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在二维地震勘探中,当地表遇到不能钻井放炮的障碍物时,如果要满足设计叠加次数,就必须采取变观激发的办法。变观激发时如何合理选择最大炮检距,保证区内浅、中、深目的层达到最大叠加次数,且在地层倾向未知的情况下,可通过变观激发试验,从监视记录上直接确定其下倾方向激发上倾接收的施工方法。
In 2D seismic exploration, when the local surface encounters obstacles that can not be drilled and shot, if the number of design overlaps is to be met, a change of perspective must be taken. How to select the maximum offset in the visualization and excitation to ensure that the superposition of shallow, middle and deep layers reach the maximum, and if the formation orientation is not known, then the variation of the excitation test can be used to determine the direct offset from the monitoring records Down dip direction to stimulate the construction of the acceptance method.