三维地震特观系统在河流及沟谷复杂地表区域的应用

Application of three-dimensional seismic special observation system in complex surface area of river and valley

在煤田勘探领域,三维地震勘探技术已经取得了丰硕成果,但在河流、沟谷等复杂地表区域,往往受到地表地貌、地形或障碍物等的影响,导致激发点、检波器难以布设到合适的位置,常规的束状采集系统不能完成布设,进而导致采集数据叠加次数达不到设计要求。特观系统的使用,能够保证激发点、检波器的布设避开障碍物区域,且障碍区域下三维地震数据满足设计要求叠加次数,确保了障碍物下资料的连续性,为之后的数据处理和解释工作奠定了基础。

In the field of coalfield exploration, three-dimensional seismic exploration technology has achieved fruitful results. However, in complex surface areas such as rivers and valleys, it is often affected by topography or obstacles, which leads to the difficulty of setting excitation points and detectors to the appropriate position. And the conventional bundle acquisition system cannot complete the layout, which leads to the number of data superposition cannot meet the design requirements. The use of the special observation system can ensure the layout of the excitation point and the detector to avoid the obstacle area, and the three-dimensional seismic data under the obstacle area meets the design requirements,which ensures the continuity of the data under the obstacle, and lays the foundation for the subsequent data processing and interpretation.