Abstract
Abstract A mineralogical, geological and geotechnical characterization of several rock types (phyllite, dolomite, breccia and marl) from an underground mine site aimed, among other things, to identify its mineral composition and to provide parameters to support the understanding of rock mass behavior. For this purpose, it was possible to perform laboratory and in situ tests or use existing empirical correlations. In this manuscript, the results of the following laboratory tests are presented and analysed - physical indices, point load test, Schmidt Hammer, uniaxial compression strength, wave propagation, micropetrographic description and X-ray diffraction. It was verified that the results obtained are consistent with other studies carried out in the region and also with results from the technical literature for similar lithotypes. Finally, the results contributed to improve the existing database on correlations among different trials.
Highlights
The geological-geotechnical characterization of rock materials is a procedure for the description and quantification of some of the conditions of a rock mass that control its behavior, in response to loads imposed by an engineering work or by nature itself (Charbel et al, 2016)
The geological-geotechnical characterization is a procedure that allows to collect data used to evaluate the quality of the rock mass to be excavated
Considering these difficulties, Chang et al, (2006) argue that the use of empirical relationships is a frequent way in rock mechanics to estimate rock properties, and the basis for these relationships is that many of the factors that affect rock strength for example, affect other properties, such as wave propagation velocity, elastic modulus and porosity, among others
Summary
The geological-geotechnical characterization of rock materials is a procedure for the description and quantification of some of the conditions of a rock mass that control its behavior, in response to loads imposed by an engineering work or by nature itself (Charbel et al, 2016).In underground excavations, the geological-geotechnical characterization is a procedure that allows to collect data used to evaluate the quality of the rock mass to be excavated. As reported by Liu et al, (2017), laboratory and / or in situ tests have limitations associated with the anisotropy and heterogeneity of the rock mass, high costs, the required time, and in some cases, with the execution of some tests. Considering these difficulties, Chang et al, (2006) argue that the use of empirical relationships is a frequent way in rock mechanics to estimate rock properties, and the basis for these relationships is that many of the factors that affect rock strength for example, affect other properties, such as wave propagation velocity, elastic modulus and porosity, among others
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
