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Research of the dynamic characteristics of the device for hydro pulse action on coal layer

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Category: Mining

Last Updated on 29 July 2014

Published on 17 October 2013

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Authors:

Yu.A. Zhulay, Cand. Sci. (Tech.), Senior Research Fellow, Institute of Transport Systems and Technologies of National Academy of Sciences of Ukraine, Leading Researcher, Dnepropetrovsk, Ukraine.

A.A. Potapenko, State Enterprise “Donbasskaya Ugolnaya Energeticheskaya Kompaniya”, General Manager, Donetsk, Ukraine.

Abstract:

To increase the efficiency of measures preventing the sudden outbursts of coal and gas and methane explosions in mines, Institute of Geotechnical Mechanics (IGTM) of National Academy of Sciences of Ukraine has developed the method and the device for hydro pulse action on coal layers, providing qualitative implementation of these measures.

Purpose. Determination of the character of dynamical characteristics of the device for hydro loosening of coal layers (UGIV) and cavitation generator of fluid pressure elastic oscillations (KG) and their comparative analysis.

Methodology. The study was based on experimentally obtained dependencies of frequency and size of fluid pressure on backup value within the variation range from 1 to 12 MPa that allows determining the behavior of KG and UGIV and making their comparison.

Findings. The experimental dynamic characteristics of KG and UGIV and their behavior have been determined.

Originality. Reduction of pressure pulsations of UGIV in comparison with ones of KG has been substantiated for the first time, the nature of resonance at amplitude-frequency characteristics of the hole simulating pipeline has been determined.

Practical value. The examination of the mentioned dependences confirms the possibility of improvement of efficiency of hydro loosening and degassing of an outburst-prone coal layer having occurrence depth up to 1000 m in the areas with low hydraulic permeability. 

References:

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SOU 10.1.001740088-2005. Pravila vedennia girnychykh robit na plastakh skhylnykh do gazodynamichnykh yavysch [Rules of Mining on Lay-ers Prone to Gas-Dynamic Phenomena]. Introduced firstly on December 30, 2005, Minugleprom Ukrainy, Kyiv, 225 p.

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Boyko, Ya.I., Nikiforov, A.V. and Rubinskyi, A.A. (2009), “Increase of efficiency of hydro loosening of outburst-prone coal layers in development working and in niches”, Sposoby i sredstva soydaniya bezopasnykh usloviy truda v shakhtakh: sbornyk nauchnykh trudov MakNII, no. 2 (24), pp. 52–57.

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Vasilyev L.M., Zhulay Yu.A., Zberovsky V.V., Moiseenko P.J. and Trokhimets, N.J. Ustrojstvo dlya hidroimpulsnogo vozdejstviya na ugolnyj plast [Device for Hydro Pulse Action on Coal Layer], Patent 87038 Ukraine, MKY Е21F 5/02, declarant and patent holder: Institute of Geotechnical Mechanics of National Acade my of Science of Ukraine, declaration date 13.09.07, published June 06, 2009, Bulletin no. 11.

4. Моисеенко П.Ю. Обоснование параметров кавитационного генератора для гидрорыхления угольных пластов: автореф. дис. на соискан. научн. степ. канд. техн. наук: спец. 05.05.06 / П.Ю. Моисеенко – Днепропетровск, 2010. – 20 с.

Moiseenko, P.Yu. (2009), “Obosnovaniye parametrov kavitatsyonnogo generatora dlya rykhleniya ugolnykh plastov” [Substantiation of parameters of cavitation generator for hydro loosening of coal layers], Abstract of Cand. Sci. (Tech.) dissertation, Institute of Ge-otechnical Mechanics of National Academy of Science of Ukraine, Dnepropetrovsk, Ukraine, 20 p.

5. Ангеловский А.А. Исследование динамических характеристик кавитационного генератора и оценка их соответствия параметрам выбросоопасных угольных пластов / А.А. Ангеловский, Ю.А. Жулай // Зб. наук. пр. НГУ України – Дніпропетровськ, 2012.– № 37. – С. 55–64.

Angelovskiy, A.A. and Zhulay, Yu.A. (2012), “Research of dynamic characteristics of cavitational generator and estimation of their compliance with the parame-ters of outburst-prone coal layers”, Zbirnyk naukovykh prats’ NGU Ukrainy, no. 37, pp. 55–64

6. Исследование динамических характеристик генератора упругих колебаний при гидрорыхлении угольного пласта. / А.А. Ангеловский, Ю.А. Жулай, В.В. Зберовский, А.С. Ворошилов // Збірник наукових праць НГУ України. – Дніпропетровськ: РВК НГА, 2012. – № 38. – С. 35–41.

Angelovskiy, A.A., Zhulay, Yu.A., Zberovskiy, V.V. and Voroshilov, A.S. (2012), “Research of dynamic characteristics of generator of elastic vibrations at hydro loosening of a coal layer”, Zbirnyk naukovykh prats’ NGU Ukrainy, no. 38, pp. 35–41.

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