【摘要】 以煤层倾角变化范围30～60°的王家山矿区为例,选择叠前时间偏移、叠前深度偏移及叠后时间偏移3种方法进行资料处理。实际处理结果表明:叠后时间偏移适用于地震地质条件相对简单的区域;叠前时间偏移能解决共反射点叠加的问题,不能解决地下绕射点与成像点不重合的问题,主要适用于地下速度横向变化不太复杂的地区;当地震地质条件非常复杂时,只有叠前深度偏移能够同时实现共反射点的叠加和绕射点的归位。更多还原

【Abstract】 For the coal seam in Wangjiashan mining area,whose dip angle varies in the range of 30~60 °,the data could be processed by pre-stack time migration,pre-stack depth migration and post-stack time migration.The results of data processing showed that post-stack migration technique is suitable for the areas in the simple earthquake geological conditions.Pre-stack time migration technique could solve the problems from common reflection point stacking,but could not solve such problem as misalignment of underground diffraction points and image points,mainly suitable for the areas where the horizontal change of underground speed is not complex.Once the earthquake geological conditions are too complex,only pre-stack depth migration could achieve the common reflection point stacking and the diffraction point homing.更多还原