The geomechanical characterisation of rocks has become increasingly important for predicting the performance of excavation tools. Besides describing rocks in terms of physical parameters such as density, porosity and lithological details, properties such as rock strength and deformability as well as other characteristics related to abrasion, surface toughness and penetrability should be determined for technological applications. The objective of this study is to provide an analysis of the interactions between rocks and tools. Four tests were performed with this aim: brittleness test, Sievers’ miniature drill test, Cerchar abrasiveness test and Knoop micro-hardness test. Furthermore, the drilling rate index (DRI) was used to characterise and classify other indexes typically used in rock mechanics. Finally, a correlation among different rock indices is presented.

Experimental laboratory tests focused on rock characterization for mechanical excavation / Cardu, Marilena; Giraudi, Alessandro; Rocca, Vera; Verga, Francesca. - In: INTERNATIONAL JOURNAL OF MINING, RECLAMATION AND ENVIRONMENT. - ISSN 1748-0930. - STAMPA. - 26:3(2012), pp. 199-216. [10.1080/17480930.2012.712822]

Experimental laboratory tests focused on rock characterization for mechanical excavation

CARDU, Marilena;GIRAUDI, ALESSANDRO;ROCCA, VERA;VERGA, FRANCESCA
2012

Abstract

The geomechanical characterisation of rocks has become increasingly important for predicting the performance of excavation tools. Besides describing rocks in terms of physical parameters such as density, porosity and lithological details, properties such as rock strength and deformability as well as other characteristics related to abrasion, surface toughness and penetrability should be determined for technological applications. The objective of this study is to provide an analysis of the interactions between rocks and tools. Four tests were performed with this aim: brittleness test, Sievers’ miniature drill test, Cerchar abrasiveness test and Knoop micro-hardness test. Furthermore, the drilling rate index (DRI) was used to characterise and classify other indexes typically used in rock mechanics. Finally, a correlation among different rock indices is presented.
File in questo prodotto:
File Dimensione Formato  
Lab tests for rock drillability.pdf

non disponibili

Tipologia: 2. Post-print / Author's Accepted Manuscript
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 1.9 MB
Formato Adobe PDF
1.9 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2497543
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo