Energy-Based Volumetric Rock Destruction Criterion in the Rotary–Percussion Drilling Technology Improvement

Autor:	V. N. Karpov, V. V. Timonin, B. N. Smolyanitsky, V. N. Oparin
Rok vydání:	2017
Předmět:	Petroleum engineering Uniaxial tension Uniaxial compression Drilling Geology 02 engineering and technology Geotechnical Engineering and Engineering Geology 020501 mining & metallurgy Stress (mechanics) 0205 materials engineering Energy based Energy (signal processing) Characteristic energy
Zdroj:	Journal of Mining Science. 53:1043-1064
ISSN:	1573-8736 1062-7391
DOI:	10.1134/s1062739117063114
Popis:	Efficiency of energy-based criterion of volumetric rock destruction in estimation of drilling technology is theoretically validated and experimentally proved in in-situ rotary–percussion drilling in mines in Russia. The criterion is adapted to the performance of various drilling units by means of introduction of empirical coefficients for transformation of drilling energy intake to the relevant energy characteristics of stress rock fracture in face zone. The mathematical description of the criterion of minimum energy intake of rotary–percussion drilling depending on stress state and physical properties of rocks, and on force of rotary–feed mechanism is presented. The authors introduce a new geomechanical notion—factor of topological connection of rocks and give its analytical expression using experimental uniaxial compression and uniaxial tension strength of rocks, required in the design and improvement of rotary–percussion drilling in different geological and geotechnical conditions of mining.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::05b5309393fbc2e7363e9dd055795577 https://doi.org/10.1134/s1062739117063114 Zobrazit plný text záznamu Plný text ve formátu PDF