Науковий вісник НГУ

Implementation of energy method in study of zonal disintegration of rocks

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Category: Mining

Last Updated on 14 August 2013

Published on 12 November 2012

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Authors:

O.Ye. Khomenko, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution “National Mining University”, Doctorate of the Department of Underground Mining of Deposits, Dnipropetrovsk, Ukraine

Abstract:

Purpose. To develop one of synergetic research methods, so called ‘energy method’ which describes correctly the phenomenon of rock zonal disintegration around underground excavations for ore reserves mining and to estimate the effectiveness of existing ore extraction technologies.

Methodology. Analytical model for simulation of thermodynamic processes of formation of zonal disintegration of massif around the development workings has been created. Main technical parameters, such as distribution of radial and tangential stresses remaining after the conversion of potential energy in the areas of thermodynamic balance, the total stress from the action of the variety of intensity factors (density, magnetization, water abundance, gas content), and appearing of massif deformation areas in zones of thermodynamic energy imbalance have been modeled.

Findings. The choosing of the synergetic approach for the research has been substantiated. The classification of methods studying the stress-strain state of rocks has been fulfilled. Advantages and disadvantages of widely used theoretical modeling methods have been analyzed. The efficiency of phenomenological strength theories for the identification of massif areas exposed to destruction has been proved. The main stages and correlations in the process of modeling of rock zonal disintegration with the entropy, thermodynamic and thermal methods have been considered, and the dynamics of energy zones formation around development workings for Ukrainian ore mines has been modeled.

Originality. The method describing adequately the phenomenon of rock zonal disintegration around underground workings, recognized by international scientific community like one of the most difficult scientific problems which cannot be described on the base of existing concepts of physics, has been developed.

Practical value. The energy research method has been created for determining the shape and size of the thermodynamic balance zones, the conditions of transforming the different energy zones into the misbalance state as well as the number of such zones in the protective capsule formed in the rock around excavations.

References:

1. Хоменко О.Е. Управление энергией горных пород при подземной разработке руд [Текст] / Хоменко О.Е. // Горный журнал. Черные металлы. – 2010. – Специальный выпуск. – С. 41–43.
Khomenko, O.Ye, (2010), “Control of the energy of rocks in underground ore mining”, Mining Journal. Ferrous metals, Special Issue, pp. 41–43.

2. Синергетический подход в исследовании производственных процессов при добыче руд подземным способом [Текст] / [О.Е. Хоменко, В.В. Русских, М.В. Нетеча и др.], // Науковий вісник НГУ. – Днепропетровск, 2004 – №7. – С. 3–5.
Khomenko, O.Ye. Russkikh, V.V., Netecha, M.V., Kononenko, M.N. and Dolgiy, A.A. (2004), “Synergetic approach in study of production processes in underground ore extraction”, Naukovyi visnyk Natsionalnoho hirnychoho universytetu, no.7, pp. 3–5.

3. Хоменко О.Е. Синергетика в управлении состоянием массива горных пород / О.Е. Хоменко, А.Б. Вла-дыко // „Форум гірників“ Міжн. наук.-техн. конф. м. Дніпропетровськ: РВК НГУ.– 2007.– С. 67–71.
Khomenko, O.Ye. and Vladyko, A.B. (2007), “Synergetics in the management of rock mass state”, Proc. of the International scientific conference “Forum of Mining Engineers”, National Mining University, Dnіpropetrovsk, pp. 67–71.

4. Хоменко О.Е. Синергетический подход к оценке прочностных свойств горных пород [Текст] / Хоменко О.Е. // Науковий вісник НГУ. – Днепропетровск, 2007. – №7. – С. 29–31.
Khomenko, O.Ye. (2007), “Synergetic approach in assessment of rock strength properties”, Naukovyi visnyk Natsionalnoho hirnychoho universytetu, no. 7, pp. 29–31.

5. Лавриненко В.Ф. Преобразование энергии и формирование полей напряжений в массиве вокруг выработок [Текст] / Лавриненко В.Ф. // Изв. вузов. Горный журнал – 1986. – № 4. – С. 5 – 11.
Lavrinenko, V.F. (1986), “Energy transformation and formation of stress fields in rocks around excavations”, Izvestiya vuzov. Gornyy zhurnal, no. 4, pp. 5–11.

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