【摘要】 我国中部和西北部部分地区,煤层埋藏深度一般较浅,地表较为复杂,地形起伏大,高程的剧烈变化会影响基准面的选取。而基准面选取不合适,其危害一是严重影响叠加效果,二是致使构造形态发生畸变,更影响后期资料解释的可靠性。要消除这种影响,必须在静校正处理时选取合理的基准面。针对3种水平基准面的选择方法,通过模型进行计算,分析其优缺点。同时依托陕西韩城某工区进行对比,选取适合该区的基准面,效果较好。更多还原

【Abstract】 Buried depth of coal bed is shallow,ground surface is complex and elevation changes largerly in parts of central and northwest of China.The change of elevation is one of the consideration to selection of seismic datum.An unreasonable datum is thought to harm the stacking result and more serious to distort geological structure,making seismic interpretation unreliable.As a result,a most optimal datum should be selected.By numerical modelling and data processing,advantages and disadvantages of three datum selection methods are analyzed.The optimal method is used in seismic data process of Hanchen survey and produce good result.更多还原