地震炮点、接收点偏移问题以及弯曲测线处理中的网格问题的讨论

DISCVSSiON ON THE PROBLEMS OF MIGRATION OF THE SHOTPOINT AND RECEIVING POINT AND THE GRID IN SLALOM LINE PROCESSING

本文用空间解析的方法讨论了炮点与接收点偏离指定位置所带来的旅行时时差,和先给定旅行时允许误差,然后提出求取炮点和接收点的允许移动范围的计算方法,从而为在山区地震勘探施工中进行合理偏移提供了理论根据。结合波动迭加加强之条件,还对弯曲测线资料处理中如何确定“网格”进行了必要的探讨。

This article deals with the travel-time difference due to the fact that shotpoint and receiving point are deviated from the designated location by means of space analysis method. The way of calculation about the allowable error is qiven in advance, and then to obtain the moving range of shotpoint and receiving point are mentioned also. Thus it can be served as theoretical grounds for the proper migration being carried out the seismic prospecting in mountainous region. Furthermore, with the condition to intensify the wave stacking, a tentative approach concerning how to determine "grid" in the processing of slalom line data are made.