METHODS FOR EXPERIMENTAL STUDYING OF CONSOLIDATED ROCK CASING BEHAVIOUR BY MODELS MADE OF EQUIVALENT MATERIALS

Details

Parent Category: Geo-Technical Mechanics, 2014

Category: Geo-Technical Mechanics, 2014, Issue 118

UDC 622.281.406:539.3

Authors:

Zaitsev M.S., M. S. (Tech.) (IGTM NAS of Ukraine)

Kolomiets A.N., Ph.D. (Phys.-Math.), Senior Researcher (IGTM NAS of Ukraine)

Shmatovskiy L.D., Ph.D. (Tech.), Senior Researcher (IGTM NAS of Ukraine)

Abstract.

Behaviour of longwall contours consolidated by the roof bolting and by injecting of expanding grouting mortar were experimentally studied with the help of specially elaborated key methodological principles. As an assigned task is to study interdependence between consolidated rock formations and convergence of the longwall contour with the help of models of equivalent materials, therefore, key physical and mechanical characteristics which play a determining role in this process include: (a) condition of similarity of the model materials and simulated rock thickness by their strength properties and (b) condition of similarity of simulated processes of elastic deformations. Results of these studies are required for further designing of  technologies for improving longwall stability by way of consolidation of marginal rocks with involving them into the process of resistance to the rock pressure. 

Keywords:

rocks, roof bolting, consolidating injection, modeling, method of equivalent materials, concrete mix.

References:

1. Shmatovsky, L.D., Kolomietc, A.N., Zaitsev, M.S. et all (2013), “Method for computing parameters of grouting rock self-steress”,  Geotekhnicheskaya Mekhanika [Geo-Technical Mechanics], no. 110, pp. 219-231.

2. Perepelitsa, V.G., Kolomietc, A.N. and Shmatovsky, L.D. (2012), “Features stress state in the rock mass in the process of event generation”, Dopovіdі NАN Ukrainy, vol. 5, pp. 57-61.

3. Shmatovsky, L.D., Kolomietc, A.N. and Zaitsev, M.S. et all (2013), “Method and equipment for experimental studying of the stressed rock resistibility to mechanical breaking”,  Geotekhnicheskaya Mekhanika [Geo-Technical Mechanics], no. 111, pp. 213-223.

4. Ledgerwood Leroy W, Baker Hughes Inc, “Discrete element modeling of rock destruction under high pressure conditions”, Pat. № CA2670181

5. Zorin, A.N., Khalimendik, Y.M., and Kolesnikov V.G. (2001), Mekhanika razrusheniya gornogo massiva i ispolzovanie ego energii pri dobyche poleznykh iskopaemykh [Fracture mechanics of the rock mass and the use of its energy for production of mineral resources], Nedra, Moscow, Russia.

6. Bedard, C. (2003), “Aitcin pierri-Claude: A la recherché d’un beton de 150 Mpa”,  Ganadian journal of civil Engineering, vol. 21, no. 4, pp. 600-613.

About the authors:

Zaitsev Maxim Stanislavovich, Master of Science, Junior Researcher at the Department of Elastomeric Component Mechanics in Mining Machines, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Kolomietc Alexander Nikolaevich, Candidate of Physics and Mathematics (Ph.D.), Senior Researcher, Senior Researcher at the Department of Elastomeric Component Mechanics in Mining Machines, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Shmatovsky Leonid Dmitrievich,Candidate of Technical Sciences (Ph.D.), Senior Researcher, Senior Researcher at the Department of Elastomeric Component Mechanics in Mining Machines, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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