ISSN 0253-2778

CN 34-1054/N

open

Joint application of reflection and refraction seismic exploration approach to piedmont buried fault at complex geotectonic conditions

  • Seismic reflection and refraction exploration techniques have its advantages and limitations to exploring the piedmont buried fault in front of mountain at that complex segment in geotectonic aspect. So a joint of reflection and refraction seismic exploration approach is applied for this case and make best use of the advantages and bypass the disadvantages to infer the location, nature and preliminary activity of the faults. Here, seismic reflection and refraction are jointed to detect the Qizhou segment of the Xiangfan-Guangji fault belt and yield a high-precision time profile of reflection and velocity profile of refraction. These results illustrate a sequence in the shallow and a variation velocity of whole strata. Therefore, the main rupture location, fault property and activity were characterized to be a fault belt rather than a single fault. So its believed that this joint exploration is not only a universal significance in methodology but also an important data for the evaluation of the fault activity surrounding the civil engineering.
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