三维地震勘探中不同覆盖次数对资料的影响

Influence of Different Folds on Raw Data in 3D-Seismic Exploration

以山西宁武地区某矿实际地震资料为基础,通过对该区采集的资料进行退化处理,得到不同覆盖次数的数据体,分析了不同覆盖次数对三维地震勘探资料的影响,得出在覆盖次数满足时,更高的覆盖次数对资料影响不大;在覆盖次数不足时,资料受影响较大。指出设计观测系统时既要满足覆盖次数,还要考虑经济成本的投入。

On the basis of actual seismic exploration of a mine in Shanxi Ningwu area, by degeneration process-ing on the raw data collected in this area, obtains the different data volume of folds, analyzes the influence of differentfohls to 3 D - seismic exploration data. It eoneludes that the higher folds have little effect to raw data when the foldsare sufficient. The raw data are affected greatly when the folds are lack. Points out that when designs observation sys- tem, not only satisfies the folds, but also considers the input of economic cost.