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Mapping the Fracture System of a Landslide by Pressure Probe Method
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 76th EAGE Conference and Exhibition 2014, Jun 2014, Volume 2014, p.1 - 5
Abstract
Mechanically weak zones produced by rock realignment in the subsurface may give very useful information, but may not be directly seen from the surface. A new method, the so-called pressure probe (Pre-P) method was developed for such problems. Here an application of this method is presented on the example of a landslide. The fracture system of the investigated landslide area could have been investigated by very large resolution. We know from these investigations among others that: 1. there are consolidated zones on the slope side of the fractures whose broadness correlates with the broadness of the given fracture; 2. both the large and the small fractures follow each other periodically; 3. the future slide faces already exist. The here presented Pre-P method seems to be the most favourable tool to map the fracture system of such kind of landslides according to its resolution capacity (even 2–3 cm wide fracture proved to be detectable by this method), speed, simplicity of its application, the interpretation of the data and its costs. The fracture system map made using Pre-P data offers the possibility to better understand landslides and to delineate the not-yet-endangered areas before other methods could do it.