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复杂山地近地表结构综合调查及建模技术研究
THE COMBINED SURVEYING OF THE NEAR-SURFACE OF COMPLEX MOUNTAIN AREAS AND MODELING STUDY
【摘要】 复杂山区近地表调查技术是制约地震资料品质的主要因素。这里利用地质雷达和高密度电法相配合,在四川南江山区进行了近地表结构综合调查。地质雷达探测精度高,高密度电法探测深度大且能有效补充介质电性信息。通过微测井数据进行标定,建立了近地表结构的深度和速度模型,为地震静校正提供了依据。经研究结果表明,采用近地表调查数据进行静校正的地震品质得到了提高。
【Abstract】 The near-surface survey techniques in complex mountain areas is a key factor controlling the seismic acquisition quality. This paper uses the ground penetrating radar (GPR) and the high density resistivity method to survey near-surface structure in Nanjiang mountain areas of Sichuang. The GPR can provide high precision structure of sub-surface, but the resistivity method can survey more deep and get resistivity information. Then it used microlog to correct the data, ultimately obtained the near-surface depth and velocity model for static correction of seismic data. The results shows that the seismic acquisition quality becomes better by static correction with near-surface survey data.
- 【文献出处】 物探化探计算技术 ,Computing Techniques for Geophysical and Geochemical Exploration , 编辑部邮箱 ,2011年04期
- 【分类号】P631.4
- 【下载频次】122