INTEGRAL ANALYSIS OF GEOELECTRICAL (RESISTIVITY) AND GEOTECHNICAL (SPT) DATA IN SLOPE STABILITY ASSESSMENT

作者: Mohd Hazreek Zainal Abidin , Mohamad Faizal Tajul Baharuddin , Rosli Saad , Chitral Wijeyesekera , Ahmad Fauziah

DOI:

关键词: Geologic mapStability (probability)InstabilityBoreholeGeographySlope stabilityDrillingValue (mathematics)Electrical resistivity and conductivityGeotechnical engineering

摘要: Geoelectrical survey and the geotechnical SPT (N value) method were used to investigate the stability of a slope together with influence heterogeneous geomaterials in wet tropical region. The integration these different field methods provides an opportunity understand some relationship regarding subsurface ground stiffness status through combination of geophysical analysis. analysis shows that zone high resistivity value generally have N value, which stand for vice versa. However, some zones low resistivity value are not accompanied by decrease its and sometimes even showing higher value. These contradictions show one should be careful directly correlate actual heterogeneous subsurface geomaterials. A may be weak due result water conductivity or/and condition. Additional physical geological mapping laboratory test complexity profile terms of geomaterials, geological structure water seepage contra zone, thus resulting for some inconsistency position geoelectrical spread line and borehole drilling point conducted also contributing significant opposition findings. Therefore, multiple explorations planned reduce uncertainty in application geophysical instability assessment order compensate the resistivity finding

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