CAVITATION DEVICE FOR PULSE HYDRAULIC LOOSING OF THE COAL LAYERS

Details

Parent Category: Geo-Technical Mechanics, 2014

Category: Collection of scientific papers «Geotekhnicheskaya Mekhanika» Issue 114

UDC 622.232.522.24

Authors:

L.M. Vasilyev, D.Sc.(Tech.),Professor,

V.V. Zberovsky, Ph.D. (Tech.), Senior Researcher,

Yu.A. Zhulay, Ph.D. (Tech.), Senior Researcher,

D.L. Vasilyev, Ph.D. (Tech.), Reseacher,

Yu.E. Polyakov, Doctoral Student

(IGTM NAS of Ukraine)

A.A. Angelovskiy, M.S. (Tech.)

(PJSC «Krasnodonugol»)

Abstract.

The article presents a cavitation device for pulse hydraulic loosing of the coal layers. Dependences were specified for frequency and amplitude of pressure self-oscillation in diffusion channel of elastic vibration generator and its amplitude and frequency parameters induced by backwater pressure. Operational parameters of the cavitation device are justified for hydraulic loosing of prone-to-outburst coal layers at limiting rate of the deformation development (=10 с^-1) and crack formation at different values of coefficient of the coal elasticity when stratification compression is 3∙10²≤Е≤5∙10² МPa and when Е=2×10³ is horizontal to stratification. Modeling of the coal layer hydraulic loosing with the help of laboratory bench in the simulator of filtration sector of the well showed that amplitude-frequency characteristics of the device were changed at distance of 0,5; 1.0; 1,5 and 2,0 m from the generator ГК-2,5.

Keywords:

cavitation device, operational parameters, elasticity modulus, dynamic characteristics, amplitude-frequency characteristics, oscillations.

References:

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About the authors:

Vasilyev LeonidMikhaylvich,Doctor f technical Sciences (D. Sc.), Professor, Head of Department of Rock Breaking Problems, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM NAS of Ukraine), Dnepropetrovsk, Ukraine.

Zberovsky Vasily Vladislavovich,Candidate of TechnicalSciences (Ph.D.), Senior Researcher in the Department of Rock Breaking Problems, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM NAS of Ukraine), Dnepropetrovsk, Ukraine.

Zhulay Yuriy Alekseevich,Candidate of TechnicalSciences (Ph.D.), Senior Researcher in the Department of Rock Breaking Problems,r, Institute of Transport Systems and Technologies of National Academy of Sciences of Ukraine  (IGTM NAS of Ukraine), Dnepropetrovsk, Ukraine.

Vasilyev Dmitriy Leonidovich, Candidate of Technical Sciences (Ph.D), Researcher in Department of Elastomeric Component Mechanics in Mining Machines, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine  (IGTM NAS of Ukraine), Dnepropetrovsk, Ukraine.

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 NAS of Ukraine), Dnepropetrovsk, Ukraine. This email address is being protected from spambots. You need JavaScript enabled to view it.

Angelovskiy Aleksander Anatolyevich, Master of Science, General Director of CEO of Public Joint Stock Company «Krasndnugol», Krasnodon, Ukrine.

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