Journals →  Gornyi Zhurnal →  2014 →  #9 →  Back

PHYSICS AND MECHANICS OF ROCKS
ArticleName X-ray computed tomography in the study of physico-mechanical properties of rocks
ArticleAuthor Vaisberg L. A., Kameneva E. E.
ArticleAuthorData

Author 1:

Name & Surname: Vaisberg L. A.
Company: Mekhanobr-Tekhnika Research and Engineering Corporation (Saint-Petersburg, Russia)
Work Position: Research Manager
Scientific Degree: Professor, Doctor of Engineering Sciences, Corresponding Member of the Russian Academy of Sciences
Contacts: e-mail: gornyi@mtspb.com

 

Author 2:

Name & Surname: Kameneva E. E.
Company: Petrozavodsk State University (Petrozavodsk, Russia)
Work Position: Assistant Professor
Scientific Degree: Candidate of Engineering Sciences

Abstract

The article illustrates workability of X-ray computed microtomography (X-ray micro-CT) in the studies of microstructure and physico-mechanical properties of rocks. It is emphasized that the approach to rock disintegration improvement should rest upon the detail analysis of macro- and microstructure of rocks in interconnection with their physicomechanical properties. The authors substantiate that an informative characteristic coupling the properties and structural defects of rocks is the porosity. The prospects offered by the X-ray micro-CT in solving of practical tasks of rock breakage include the quantitative characterization of pore space structure. The advantage of the method is the nondestructive analysis, after which samples can be used in other tests. The authors perform comparative assessment of pore space structure in rocks of different texture and structure: gabbro-diabase, granite and bastard granite. The differences in amount, size, shape, connectivity and distribution of pores in the listed rock types are found. The differential characteristic of distribution of pores by density, size and shape is obtained. It is shown that ultimate compression strength grows if pores are smaller in size, more spherical and have better connectivity. Pores under 40 μm in size do not decrease strength irrespective of their amount. Volumes being the same, bigger and less spherical pores reduce the rock strength.

Authors express their gratitude to Yu. G. Pimenov and D. I. Sokolov, Candidates of Geological and Mineralogical Sciences, Russian State University of Oil and Gas, for the assistance in the microtomography studies.

keywords Rocks, pore space structure, disintegration, X-ray computed microtomography
References

1. Griffith A. The phenomenon of rupture and flow in solids. Philosophical Transactions of the Royal Society, series A. 1920. Vol. 221. pp. 163–198.
2. Baranov E. G., Krymskiy V. I. Sovremennoe sostoyanie i puti razvitiya teorii razrusheniya gornykh porod (Modern state and ways of rock failure theory development). Izvestiya vuzov. Gornyy zhurnal = Proceedings of universities. Mining Journal. 1989. No. 2. pp. 1–10.
3. Vaysberg L. A, Zarogatskiy L. P., Turkin V. Ya. Vibratsionnye drobilki. Osnovy rascheta, proektirovaniya i tekhnologicheskogo primeneniya (Vibration crushers. Basis of calculation, designing and technological application). Saint Petersburg : Publishing House of A. P. Karpinsky Russian Geological Research Institute, 2004. 306 p.
4. Revnivtsev V. I., Gaponov G. V., Zarogatskiy L. P. et al. Selektivnoe razrushenie mineralov (Selective failure of minerals). Moscow : Nauka, 1988. 286 p.
5. Khopunov E. A. Rol struktury i prochnostnykh kharakteristik mineralov v razrushenii i raskrytii rud (Role of structure and strength characteristics of minerals in failure and exposure of ores). Obogashchenie Rud = Mineral processing. 2011. No. 2. pp. 25–31.
6. Ashmarin G. D., Salakhov A. M., Boltakova N. V., Morozov V. P. Vliyanie porovogo prostranstva na prochnostnye svoystva keramiki (Influence of threshold area on strength properties of ceramics). Steklo i keramika = Glass and ceramics. 2012. No. 8. pp. 23–25.
7. Zhilin P. A., Krivtsov A. M. Mikrostrukturnye modeli v makroskopicheskoy mekhanike sploshnoy sredy (Microstructure models in macroscopic continuum mechanics). Tezisy dokladov Vserossiyskoy nauchnotekhnicheskoy konferentsii «Innovatsionnye naukoemkie tekhnologii dlya Rossii», Sankt-Peterburg (Thesis of reports of All-Russian scientific-technical conference “High innovation technologies for Russia”, Saint Petersburg). Saint Petersburg : Publishing House of Saint Petersburg State Technical University, 1995. 161 p.
8. Krivtsov A. M. Deformirovanie i razrushenie tverdykh tel s mikrostrukturoy (Deformation and failure of solid bodies with microstructure). Moscow : Fizmatlit, 2007. 304 p.
9. Kuksenko V. S. Mikromekhanika i razrusheniya materialov : avtoreferat dissertatsii… doktora fizikomatematicheskikh nauk (Micromechanics and failures of materials : thesis of inauguration of Dissertation … of Doctor of Physical and Matematical Sciences). Leningrad, 1988. 36 p.
10. Dobrynin V. M., Vendelshteyn B. Yu., Kozhevnikov D. A. Petrofizika (Petrophysics). Moscow : Nedra, 1991. 368 p.
11. Zhurkov S. N. K voprosu o fizicheskoy prirode prochnosti (To the question about the physical nature of strength). Fizika tverdogo tela = Physics of the Solid State. 1980. Vol. 22, Iss. 11. pp. 13–15.
12. Protasov Yu. I. Razrushenie gornykh porod (Destruction of rocks). Third edition. Moscow : Publishing House of Moscow State Mining University, 2002. 453 p.
13. Rzhevskiy V. V., Novik G. Ya. Osnovy fiziki gornykh porod (Basis of physics of rocks). Third edition, revised and enlarged. Moscow : Nedra, 1978. 390 p.
14. Romm E. S. Strukturnye modeli porovogo prostranstva gornykh porod (Structural models of rocks' threshold space). Leningrad : Nedra, 1985. 240 p.
15. Pervaya Vserossiyskaya nauchnaya konferentsiya «Prakticheskaya mikrotomografiya» : tezis dokladov (First All-Russian scientific conference “Practical microtomography” : thesis of reports). Kazan : Publishing House of Kazan National Research Technological University, 2013. 190 p. (in Russian).
16. Prakticheskaya mikrotomografiya : trudy Vserossiyskoy konferentsii (Practical microtomography : proceedings of All-Russian conference). Moscow : Publishing House of V. V. Dokuchaev Soil Science Institute, 2013. 194 p. (in Russian).
17. Khozyainov M. S., Vaynberg E. I. Rentgenovskiy mikrotomograf kak instrument izucheniya obraztsov gornykh porod (X-ray microtomograh as an instrument of research of rock samples). Materialy mezhdunarodnoy nauchnoy konferentsii «Geofizika i sovremennyy mir» (Materials of international scientific conference “Geophysics and modern world”). Moscow : All-Russian Institute of Scientific and Technical Information, 1993. p. 255.
18. Yakushina O. A., Astakhova Yu. M., Khozyainov M. S. Vozmozhnosti rentgenovskoy tomografii dlya resheniya zadach tekhnologicheskoy mineralogii rud chernykh metallov (Possibilities of X-ray tomography for solving of problems of technological mineralogy of ferrous metal ores). Sovremennye metody tekhnologicheskoy mineralogii v protsessakh kompleksnoy i glubokoy pererabotki mineralnogo syrya : materialy mezhdunarodnogo soveshchaniya «Plaksinskie chteniya-2012» (Modern methods of technological mineralogy in processes of complex and deep processing of mineral raw materials : materials of international meeting “Plaksin readings-2012”). Petrozavodsk : Publishing House of Kola Science Center of Russian Academy of Sciences, 2012. pp. 147–148.
19. Dong H, Blunt MJ. Pore-network extraction from micro-computerized-tomography images. Physical Review E. 2009.
20. Wu D., Peng X. F., Investigation of Water Migration in Porous Material Using Micro-CT during Wetting. Heat Transfer—Asian Research. 2007. Vol. 36 (4). pp. 198–207.
21. Skyscan: microtomography, nanotomography, noninvasive 3D Х-ray non-destructive 3D microscopy and small animal imaging visualization and 3D analysis. Available at: http://www.skyscan.be

Language of full-text russian
Full content Buy
Back