DYNAMIC PARAMETERS OF ELASTIC-VIBRATION GENERATOR STUDIED AT DIFFERENT ANGLES OF DIFFUSER DISCLOSURE

Details

Parent Category: Geo-Technical Mechanics, 2014

Category: Geo-Technical Mechanics, 2014, Issue 117

UDC 622.001.5:621.313.12-752

Authors:

Zberovskiy V.V., Ph.D. (Tech.), Senior Researcher (IGTM NAS of Ukraine)

Polyakov Yu.Е. , Doctoral Student (IGTM NAS of Ukraine)

Narivskiy R.N., M. S. (Tech.) (IGTM NAS of Ukraine)

Abstract.

The article focuses on simulation of a pulsed liquid injection process and determination of hydrodynamic parameters of the generator ГК-2.5 at different angles of the diffuser opening: β=15°, 30°, 35°, 40°, 45° for l_kr = 6 mm and β=20° for l_kr=3 mm and l_k=30 mm. The research included the following hydrodynamic parameters of the fluid cavity flow: DР – amplitude of self-oscillations; f – self-oscillation frequency; t– parameter of cavitations. The following regime parameters were considered: Р_н, Р_п and Q – injection pressure, backwater pressure and rate of fluid flow. Basing on the experimental results of hydroimpulsive effects simulation, values of amplitude ΔР and frequency f of self-oscillations have been specified depending on parameter of cavitation τ and backwater pressure Р_п, for various modes of liquid pulsed injection into the coal seams occurred at depth up to 1300 m.

Keywords:

generator of elastic vibrations, amplitude of self-oscillation, angle of diffuser opening , mode of injection, hydrodynamic parameters.

References:

1. Vasilyev, L.M., Zhulay, Yu. A., Trohimets, N.Y., Zberovskiy, V.V. and Moiseenko, P. Yu. (2005), “Generator and a hole for the dock hydroimpulse impact on coal mass in the process blowout events”, Geotekhnicheskaya Mekhanika [Geo-Technical Mechanics], no. 61, pp. 314-322.

2. Moiseenko, P. Yu. (2009), “Substantiation of the parameters of cavitation generator for hydro breaking of coal layers”, Ph.D. Thesis, Underground mining, M.S. Poljakov Institute of Geotechnical Mechanics under NAS of Ukraine, Dnepropetrovsk, Ukraine.

3. Zberovskiy, V.V., Vasilyev, L.M., Vasilyev, D.L. and Polyakov, Yu.Е. (2012), “Hydroimpulsive influence on outburst coal layer”, Zbirnyk naukovykh prats NGU, no. 37, pp. 47-54.

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5. Vasilyev, L.M., Zberovskiy, V.V., Moiseenko, P. Yu. and Trohimets, N.Y., M.S. Poljakov Institute of Geotechnical Mechanics under NAS of Ukraine (2009), Ustroystvodlyagidroimpulsnogovozdeystviynaugolnyuplast [The device for hydroimpulsive influence on coal layer], State Register of Patents of Ukraine, Kiev, UA, Pat. № 87038.

6. Vasilyev, L.M., Zberovskiy, V.V., Polyakov, Yu.Е. & others (2014), Metodikamodelirovaniayprotsesaimpulsnogonagnetaniyazhydkosti [The methodology of modeling process of impulsive fluid injection], M.S. Polyakov Institute of Geotechnical Mechanics under NAS of Ukraine Dnepropetrovsk, Ukraine.

About the authors:

Zberovskiy Vasily Vladislavovich,Candidate of Technical Sciences (Ph.D.), Senior Researcher, Senior Researcher in Department of Rock Breaking Problems, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Polyakov Yuriy Evgenevich,Doctoral Student, principal еngineer in Department of Rock Breaking Problems, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Narivskiy Roman Nikolaevich,Master of Science,Junior Researcher in Department of Rock Breaking Problems, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science 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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