Experimental-numerical method for evaluation of energy consumption in percussive drilling of granite

Wei Yao; Mikko Hokka

doi:10.1051/epjconf/202125001012

Experimental-numerical method for evaluation of energy consumption in percussive drilling of granite

Wei Yao, Mikko Hokka

Materials Science and Environmental Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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Abstract

Most geothermal energy is found in hot and dry rock (HDR), and the total resources distributed at depths of 3-10 km are 20.9×106 EJ. Most HDR projects are developed in granite formations and understanding and control of the energy consumption in percussive drilling of granite is essential. Thus, the impact energy is dissipated in various processes including fracture of the granite, kinetic energy of the particles, and heat. This study presents a numerical-experimental method to evaluate the energy consumption in percussive drilling process. The method uses particle flow code (PFC2D) and experiments using a modified Hopkinson pressure bar system. Optical high-speed and infrared cameras were used to record the impact process during the dynamic drilling process. The velocity of fragments was estimated by the high-speed images and the instantaneous temperature change during the impact was observed from infrared images. Preliminary results are given in this study indicating that the proposed numerical and experimental methodologies can be used to investigate the energy consumption during percussive drilling. The preliminary results presented in this paper are part of a larger work in progress, and more work needs be carried out to obtain the energy consumption of the drilling process under different loading and boundary conditions.

Original language	English
Title of host publication	DYMAT 2021 - 13th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
Editors	F. Gálvez Díaz-Rubio, D.A. Cendón Franco
Publisher	EDP Sciences
Number of pages	6
DOIs	https://doi.org/10.1051/epjconf/202125001012
Publication status	Published - 8 Sept 2021
Publication type	A4 Article in conference proceedings
Event	International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading - Madrid, Spain Duration: 20 Sept 2021 → 24 Sept 2021

Publication series

Name	EPJ Web of Conferences
Publisher	EDP Sciences
Volume	250
ISSN (Print)	2101-6275
ISSN (Electronic)	2100-014X

Conference

Conference	International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
Country/Territory	Spain
City	Madrid
Period	20/09/21 → 24/09/21

Keywords

Percussive drilling
Energy consumption
Fracture
high-speed images
Impact energy

Publication forum classification

Publication forum level 1

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1051/epjconf/202125001012Licence: CC BY

Experimental-numerical methodFinal published version, 1.34 MBLicence: CC BY

https://urn.fi/URN:NBN:fi:tuni-202112018836Licence: CC BY

Advanced mechanics of materials
Hokka, M. (Contact), Mohanty, G. (Contact) & Isakov, M. (Contact)
Materials Science and Environmental Engineering
Facility/equipment: Facility

Cite this

Yao, W., & Hokka, M. (2021). Experimental-numerical method for evaluation of energy consumption in percussive drilling of granite. In F. G. Díaz-Rubio, & D. A. Cendón Franco (Eds.), DYMAT 2021 - 13th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading Article 01012 (EPJ Web of Conferences; Vol. 250). EDP Sciences. https://doi.org/10.1051/epjconf/202125001012

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title = "Experimental-numerical method for evaluation of energy consumption in percussive drilling of granite",

abstract = "Most geothermal energy is found in hot and dry rock (HDR), and the total resources distributed at depths of 3-10 km are 20.9×106 EJ. Most HDR projects are developed in granite formations and understanding and control of the energy consumption in percussive drilling of granite is essential. Thus, the impact energy is dissipated in various processes including fracture of the granite, kinetic energy of the particles, and heat. This study presents a numerical-experimental method to evaluate the energy consumption in percussive drilling process. The method uses particle flow code (PFC2D) and experiments using a modified Hopkinson pressure bar system. Optical high-speed and infrared cameras were used to record the impact process during the dynamic drilling process. The velocity of fragments was estimated by the high-speed images and the instantaneous temperature change during the impact was observed from infrared images. Preliminary results are given in this study indicating that the proposed numerical and experimental methodologies can be used to investigate the energy consumption during percussive drilling. The preliminary results presented in this paper are part of a larger work in progress, and more work needs be carried out to obtain the energy consumption of the drilling process under different loading and boundary conditions.",

keywords = "Percussive drilling, Energy consumption, Fracture, high-speed images, Impact energy",

author = "Wei Yao and Mikko Hokka",

note = "JUFOID=76808; International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading ; Conference date: 20-09-2021 Through 24-09-2021",

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Yao, W & Hokka, M 2021, Experimental-numerical method for evaluation of energy consumption in percussive drilling of granite. in FG Díaz-Rubio & DA Cendón Franco (eds), DYMAT 2021 - 13th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading ., 01012, EPJ Web of Conferences, vol. 250, EDP Sciences, International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading, Madrid, Spain, 20/09/21. https://doi.org/10.1051/epjconf/202125001012

Experimental-numerical method for evaluation of energy consumption in percussive drilling of granite. / Yao, Wei; Hokka, Mikko.
DYMAT 2021 - 13th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading . ed. / F. Gálvez Díaz-Rubio; D.A. Cendón Franco. EDP Sciences, 2021. 01012 (EPJ Web of Conferences; Vol. 250).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Experimental-numerical method for evaluation of energy consumption in percussive drilling of granite

AU - Yao, Wei

AU - Hokka, Mikko

N1 - JUFOID=76808

PY - 2021/9/8

Y1 - 2021/9/8

N2 - Most geothermal energy is found in hot and dry rock (HDR), and the total resources distributed at depths of 3-10 km are 20.9×106 EJ. Most HDR projects are developed in granite formations and understanding and control of the energy consumption in percussive drilling of granite is essential. Thus, the impact energy is dissipated in various processes including fracture of the granite, kinetic energy of the particles, and heat. This study presents a numerical-experimental method to evaluate the energy consumption in percussive drilling process. The method uses particle flow code (PFC2D) and experiments using a modified Hopkinson pressure bar system. Optical high-speed and infrared cameras were used to record the impact process during the dynamic drilling process. The velocity of fragments was estimated by the high-speed images and the instantaneous temperature change during the impact was observed from infrared images. Preliminary results are given in this study indicating that the proposed numerical and experimental methodologies can be used to investigate the energy consumption during percussive drilling. The preliminary results presented in this paper are part of a larger work in progress, and more work needs be carried out to obtain the energy consumption of the drilling process under different loading and boundary conditions.

AB - Most geothermal energy is found in hot and dry rock (HDR), and the total resources distributed at depths of 3-10 km are 20.9×106 EJ. Most HDR projects are developed in granite formations and understanding and control of the energy consumption in percussive drilling of granite is essential. Thus, the impact energy is dissipated in various processes including fracture of the granite, kinetic energy of the particles, and heat. This study presents a numerical-experimental method to evaluate the energy consumption in percussive drilling process. The method uses particle flow code (PFC2D) and experiments using a modified Hopkinson pressure bar system. Optical high-speed and infrared cameras were used to record the impact process during the dynamic drilling process. The velocity of fragments was estimated by the high-speed images and the instantaneous temperature change during the impact was observed from infrared images. Preliminary results are given in this study indicating that the proposed numerical and experimental methodologies can be used to investigate the energy consumption during percussive drilling. The preliminary results presented in this paper are part of a larger work in progress, and more work needs be carried out to obtain the energy consumption of the drilling process under different loading and boundary conditions.

KW - Percussive drilling

KW - Energy consumption

KW - Fracture

KW - high-speed images

KW - Impact energy

U2 - 10.1051/epjconf/202125001012

DO - 10.1051/epjconf/202125001012

M3 - Conference contribution

T3 - EPJ Web of Conferences

BT - DYMAT 2021 - 13th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading

A2 - Díaz-Rubio, F. Gálvez

A2 - Cendón Franco, D.A.

PB - EDP Sciences

T2 - International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading

Y2 - 20 September 2021 through 24 September 2021

ER -

Yao W, Hokka M. Experimental-numerical method for evaluation of energy consumption in percussive drilling of granite. In Díaz-Rubio FG, Cendón Franco DA, editors, DYMAT 2021 - 13th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading . EDP Sciences. 2021. 01012. (EPJ Web of Conferences). doi: 10.1051/epjconf/202125001012

Experimental-numerical method for evaluation of energy consumption in percussive drilling of granite

Abstract

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Keywords

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Advanced mechanics of materials

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