论文部分内容阅读
前言在复杂的地震地质条件下进行地震勘探工作,虽然采用了多次覆盖的先进工作方法,有时仍得不到良好的迭加剖面,往往见到多次剖面比一次剖面的面貌改善不大。多次迭加剖面的质量主要取决于参与共深度点各迭加道之间的相位一致性,影响相位一致性的因素很多,如野外工作方法及施工中的问题使接收的波不是来自同一个深度点,由于速度不准使动校正后还尚存正的或负的剩余动校正量,深层地震地质条件复杂,表层低速带速度和厚度变化莫测,地形起伏变化剧烈使野外静校正后还残存着剩余静校正量以及偶然干扰测量计算误差等等。
Foreword Seismic exploration under complicated seismic and geological conditions, although using advanced methods of work that cover many times and sometimes fail to obtain a good superposed profile, often shows little improvement in the profile of multiple sections over a single section. The quality of multiple superimposed sections mainly depends on the phase consistency among the overlapped paths involved in the common depth point. There are many factors that affect the phase consistency. For example, the field work method and construction problems make the received waves not from the same Depth point, due to the speed is not allowed to move after the correction of positive or negative remaining dynamic correction, deep seismic geological conditions, unpredictable changes in surface velocity and thickness of the low speed, dramatic changes in the terrain so that the field static correction The residual static correction and accidentally interfere with measurement error calculation and so on.