GPR imaging of shear zones in crystalline rock Building a 3D geological model based on GPR, seismic and geological data

被引：0

作者：

Doetsch, Joseph ^{[1
]}

Krietsch, Hannes ^{[1
]}

Lajaunie, Myriam ^{[1
]}

Schmelzbach, Cedric ^{[1
]}

Maurer, Hansruedi ^{[1
]}

Amann, Florian ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Dept Earth Sci, Zurich, Switzerland

来源：

2017 9TH INTERNATIONAL WORKSHOP ON ADVANCED GROUND PENETRATING RADAR (IWAGPR) | 2017年

关键词：

GPR; crystalline rock; shear zone; fractured rock;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

GPR data were acquired at the Grimsel Test Site to improve the geological model prior to high-pressure water injections into shear zones. Data acquired in tunnels using shielded 160 MHz antennas are of exceptionally high quality and could image shear zones up to a distance of approximately 24 m from the tunnel. The interpretation is based on i) comparing modelled shear-zone arrivals to measured ones and ii) directly interpreting fully processed (i.e., migrated) data. Our results add significant detail to the geological model and agree with findings of an anisotropic seismic tunnel-to-tunnel traveltime inversion.

引用

页数：5

共 15 条

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