JOURNAL OF ROCK MECHANICS

JOURNAL OF ROCK MECHANICS

Investigating the relationship between fundamental frequencies produced by rotary drilling and the physical and mechanical properties of carbonate rocks

Document Type : Original Article

Authors
Mojtaba Yari Malekabad 1
Raheb Bagherpour 2
Mehrbod Khoshouei Esfahani 2
Mohammad Hossein Jalalian 2
1 Department of Mining Engineering, Faculty of Engineering and Technology, Malayer University, Malayer, Iran.
2 Faculty of Mining Engineering, Isfahan University of Technology, Isfahan, Iran.
Abstract
Mining drilling has always been considered as one of the main operational units in various branches of mining engineering. Drilling at all levels and regardless of its application has a by-product of acoustic signals. On the other hand, knowing the type of rock and the mechanical and physical properties of the rock is one of the most important issues in mining engineering and is also the basis and foundation of most designs in mining engineering. Determining the physical and mechanical properties of the rock is of particular importance both in terms of the amount of time spent on this process and from an economic perspective. In this research, an attempt will be made to use the analysis of sound frequencies resulting from the drilling process to determine the physical-mechanical properties of the rock in the shortest possible time and in the most economical way. For this purpose, carbonate rock samples were prepared in an acceptable range of physical-mechanical properties and after conducting drilling tests and analyzing the relevant acoustic signals, the prediction of uniaxial compressive strength, tensile strength, and P-wave velocity was carried out. The results show that there is an acceptable relationship between the above features and the dominant frequencies.
Keywords
Acoustic signal analysis
Rotary drilling
Physical and mechanical properties of rocks
Carbonate rocks
JOURNAL OF ROCK MECHANICS
Volume 5, Issue 2
Summer 2022
Pages 63-72