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三维地震勘探技术一直被成功地应用于石油、煤炭等中深层勘探领域,对于深度小于100 m的浅层三维地震勘探,由于受到多种条件的限制,相关的研究和应用成果还很少.为了研究浅层三维地震勘探技术的应用特点,以南水北调某工程为研究对象,深入研究并开发出了服务于工程的浅层三维勘探采集、分析、处理、成果展示系统.包括设计符合现场地震地质条件的三维地震观测系统、针对浅层三维地震资料的特点对数据进行处理和解释、建立现场三维地震地质数据体.研究结果表明:浅层三维地震资料总体信噪比较高,获取的现场高精度三维数据体准确揭示了覆盖层的深度信息.
Three-dimensional seismic exploration technology has been successfully used in the field of petroleum, coal and other deep exploration. For the shallow three-dimensional seismic exploration depth of less than 100 m, due to a variety of conditions, the related research and application results are few. To study the application characteristics of shallow three-dimensional seismic exploration technology, take a project of South-North Water Diversion Project as the research object, deeply research and develop the system of shallow three-dimensional exploration, collection, analysis, treatment and result display for the project, Dimensional seismic observation system, the data are processed and interpreted according to the characteristics of the shallow three-dimensional seismic data, and the on-site 3D seismic geological data body is established. The results show that the overall signal-to-noise ratio of shallow three-dimensional seismic data is high, The 3D volume accurately reveals the depth information of the overlay.