Fractured-bedrock aquifer studies based on a descriptive statistics of well-logging data: A case study from the Dajia River basin, Taiwan

• Autorzy: Chou P.-Y , Hsu S.-M , Chen P.-J , Lin J.-J. , Lo H.-C

Identyfikatory

DOI

10.2478/s11600-013-0187-0

• Języki publikacji: EN

Abstrakty

EN

A simple descriptive-statistical approach is proposed for evaluating the transmissivity of fractured-bedrock under field conditions. Based on standard well logging and identification of structural discontinuities from borehole televiewer, the approach consists of four steps: (1) determination of discontinuity properties, namely the frequency of discontinuities and the ratio of open fractures along the borehole; (2) ranking the three well logs and the discontinuity properties into tertiles (high-to-low); (3) performing statistical analysis (F-test) for the three well logs to assess the significance of open fractures on the water-transmitting potential and then assigned a weighting factor; and (4) a semi-quantitative indicator, RGVFO, is obtained by multiplying all predictive indexes and weighting factors. It is a multi-criteria evaluation procedure that elucidates the quantitative and qualitative importance of all selected geophysical indexes. A high cross-correlation between transmissivity to RGVFO value is found, which indicates that by a combined consideration of well logging and structural discontinuities, an appropriate estimate of bedrock water-transmitting potential can be derived.

Słowa kluczowe

EN

fractured rock; groundwater hydraulics; geophysical methods; geostatistics; Taiwan

PL

popękane skały; hydraulika wód gruntowych; metody geofizyczne; geostatystyka; Tajwan

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2014
• Tom: Vol. 62, no. 3
• Strony: 564--584
• Opis fizyczny: Bibliogr. 22 poz.

Twórcy

autor

Chou P.-Y

• Geotechnical Engineering Research Center, Sinotech Engineering Consultants, Inc., Taipei, Taiwan

autor

Hsu S.-M

• Geotechnical Engineering Research Center, Sinotech Engineering Consultants, Inc., Taipei, Taiwan

autor

Chen P.-J

• Geotechnical Engineering Research Center, Sinotech Engineering Consultants, Inc., Taipei, Taiwan

autor

Lin J.-J.

• Geotechnical Engineering Research Center, Sinotech Engineering Consultants, Inc., Taipei, Taiwan

autor

Lo H.-C

• Geotechnical Engineering Research Center, Sinotech Engineering Consultants, Inc., Taipei, Taiwan

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