ON THE NONLINEAR METHANE CONCENTRATION DEPENDENCE OF FACE LENGTH AND ALLOWED PRODUCTIVITY OF LONGWALL MINING BY GAS FACTOR

There are methodical basis for calculating the permissible length and productivity mechanized longwall by gas factor with taking into account the non-uniformity of the air flow on contour and length of the lava. The nonlinear dependence of the methane concentration in the lava, cause leakage of air flow in the goaf, are present. It is proposed to determine the productivity of stope in depending on the permissible length of the gas factor lava and coal extraction scheme shearer . It is found that the increasing of gas content of the coal seam and air leaks in the goaf reduces permitted under the gas factor the length and productivity of the stope.

The study has been supported by the Department of the Earth Science, Fundamental Research Program ONZ-3.

Keywords

Mine, coal seam, longwall productivity, gas, air leakage, concentration of methane.

Issue number: 7
Year: 2016
ISBN:
UDK: 622.33.013.3
DOI:
Authors: Ordin A.A., Tymoshenko A. M., Kolenchuk S. A.

About authors: Ordin A. A., Doctor of Technical Sciences, Head of Department, Chinakal Institute of Mining of Siberian Branch of Russian Academy of Sciences, 630091, Novosibirsk, Russia, e-mail: ordin@misd.nsc.ru, Tymoshenko A. M., Candidate of Technical Sciences, Executive Director, Research center of VostNII, 650002, Kemerovo, Russia, Kolenchuk S. A., Leading Engineer, Giprougol, 630015, Novosibirsk, Russia, e-mail: mail@giprougol.ru.

REFERENCES: 1. Ermolaev A. M., Egorov P. V., Ermolaev A. A. Ugol’. 2006, no 11, pp. 6–7.
2. Slastunov S. I., Karkashadze G. G., Kolikov K. S., Ermak G. P. Fiziko-tekhnicheskiye problemy razrabotki poleznykh iskopayemykh. 2013, no 6, pp. 53–59.
3. Rukovodstvo po proektirovaniyu ventilyatsii ugol’nykh shakht (Guidelines on coal mine ventilation design), Makeevka-Donbass, 1989.
4. Rukovodstvo po proektirovaniyu ventilyatsii ugol’nykh shakht (Guidelines on coal mine ventilation design), Kiev, 1994.
5. Rukovodstvo po proektirovaniyu ventilyatsii ugol’nykh shakht (Guidelines on coal mine ventilation design), Moscow, 2010.
6. Instruktsiya po primeneniyu skhem provetrivaniya vyemochnykh uchastkov shakht s izolirovannym otvodom metana iz vyrabotannogo prostranstva s pomoshch’yu gazootsasyvayushchikh ustanovok. Utverzhdena prikazom № 680 Federal’noy sluzhby po ekologicheskomu, tekhnologicheskomu i atomnomu nadzoru 01.12.2011 (Guidelines on ventilation schemes for extraction areas with isolated methane removal from mined-out cavities using gas-suction plants. Approved by the Federal Service for Environmental, Technological and Nuclear Supervision, Decree No. 680 dated Dec 1, 2011).
7. Grashchenkov N. F., Petrosyan A. E., Frolov M. A. Rudnichnaya ventilyatsiya: spravochnik. Pod red. K. Z. Ushakova (Mine ventilation: Handbook. Ushakov K. Z. (Ed.)), Moscow, Nedra, 1988.
8. Pravila bezopasnosti v ugol’nykh shakhtakh. Postanovlenie federal’nogo gornogo i promyshlennogo nadzora RF № 50 ot 05.06.2003 (Coal mine safety regulations. Federal Mining and Industrial Supervision of the Russian Federation, Decree No. 50 dated Jun 5, 2003), Moscow, 2003.
9. Timoshenko A. M., Baranova M. N., Nikiforov D. V. Vestnik NTs VostNII. 2010, no 1.
10. Ordin A. A., Metel’kov A. A. Fiziko-tekhnicheskiye problemy razrabotki poleznykh iskopayemykh. 2013, no 2, pp. 100–113.
11. Ordin A. A. Nikol’skiy A. M., Metel’kov A. A. Fiziko-tekhnicheskiye problemy razrabotki poleznykh iskopayemykh. 2013, no 6, pp. 117–127.
12. Ordin A. A. Nikol’skiy A. M., Metel’kov A. A. Optimizatsiya tekhnologii podzemnoy razrabotki pologikh ugol’nykh plastov. Osnovnye zavisimosti i zakonomernosti mekhanizirovannoy dobychi uglya v dlinnykh ochistnykh zaboyakh (Technological optimization in gently dipping coal mining. Basic relations and laws in mechanized longwall mining), Palmarium Academic Publishing. Saarbrucken, Deutschland, 2013, 109 p.
Mining World Russia
Subscribe for our dispatch