Estimating rock properties using sound signal dominant frequencies during diamond core drilling operations
| Autor: | Ch. S. N. Murthy, Harsha Vardhan, Ch. Vijaya Kumar, N.C. Karmakar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Audio signal
Acoustics Fast Fourier transform 0211 other engineering and technologies ComputingMilieux_PERSONALCOMPUTING Drilling Context (language use) 02 engineering and technology 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Compressive strength lcsh:Engineering geology. Rock mechanics. Soil mechanics. Underground construction lcsh:TA703-712 Numerical control Sound pressure Geology 021101 geological & geomatics engineering 0105 earth and related environmental sciences Audio frequency |
| Zdroj: | Journal of Rock Mechanics and Geotechnical Engineering, Vol 11, Iss 4, Pp 850-859 (2019) |
| ISSN: | 1674-7755 |
| Popis: | In many engineering applications such as mining, geotechnical and petroleum industries, drilling operation is widely used. The drilling operation produces sound by-product, which could be helpful for preliminary estimation of the rock properties. Nevertheless, determination of rock properties is very difficult by the conventional methods in terms of high accuracy, and thus it is expensive and time-consuming. In this context, a new technique was developed based on the estimation of rock properties using dominant frequencies from sound pressure level generated during diamond core drilling operations. First, sound pressure level was recorded and sound signals of these sound frequencies were analyzed using fast Fourier transform (FFT). Rock drilling experiments were performed on five different types of rock samples using computer numerical control (CNC) drilling machine BMV 45 T20. Using simple linear regression analysis, mathematical equations were developed for various rock properties, i.e. uniaxial compressive strength, Brazilian tensile strength, density, and dominant frequencies of sound pressure level. The developed models can be utilized at early stage of design to predict rock properties. Keywords: Rock properties, Sound pressure level, Fast Fourier transform (FFT), Sound signal, Core drilling, Dominant frequencies |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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