Linking static and dynamic mechanical properties for metamorphic rocks from Austria including their anisotropic efect

• Autorzy: Gegenhuber, Nina , Krueger, Melanie
• Języki publikacji: EN

Abstrakty

EN

The derivation of geomechanical properties from petrophysical/geophysical data is not only of great importance in the oil industry but also in mining, geothermal projects and tunnelling, for reduction of costs and to improve security. For the oil industry and geothermal sector, it is mainly important for drilling rate and the stability of the borehole and, as a result, the economic factor. A key issue is that geomechanical properties, which can support a better planning of a project, cannot be measured in the borehole or on the surface directly. In this study, the focus is put on anisotropic efects on the correlation between static and dynamic properties, which is neglected in most studies but important because values can vary extremely. Therefore, measurements in the geotechnical laboratory of compressional and shear wave velocity during uniaxial compression strength test were taken. Additionally, typical properties like bulk and grain density as well as porosity were determined too. Diferent samples (carbonate–silica schist, marble and phyllite) from the "Zentrum am Berg"-research tunnelling centre at the "Erzberg" in Austria were used. Shown are correlations between uniaxial compression strength and compressional wave velocity as well as for static and dynamic Young’s modulus including their anisotropic efect. The results are promising and provide an opportunity for further applications on log data.

Słowa kluczowe

PL

statyczny moduł Younga; moduł Younga dynamiczny; korelacje; jednoosiowa wytrzymałość na ściskanie; anizotropia

EN

static Young’s modulus; dynamic Young modulus; correlations; uniaxial compressive strength; anisotropy

• Czasopismo: Acta Geophysica
• Rocznik: 2021
• Tom: Vol. 69, no. 2
• Strony: 539--546
• Opis fizyczny: Bibliogr. 30 poz.

Twórcy

autor

Gegenhuber, Nina

• Montanuniversitaet Leoben, Erzherzog-Johann Strasse 3, 8700 Leoben, Austria,

autor

Krueger, Melanie

• Montanuniversitaet Leoben, Erzherzog-Johann Strasse 3, 8700 Leoben, Austria

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Identyfikatory

DOI

10.1007/s11600-021-00566-w