Bunko T.V.,Dudnik M.N. Measurings of large debit of methane indecontamination mining holes by the APR-2 anemometer

Details

Parent Category: Geo-Technical Mechanics, 2015

Category: Geo-Technical Mechanics, 2015, Issue 125

Geoteh. meh. 2015, 125, 122-129

MEASURINGS OF LARGE DEBIT OF METHANE INDECONTAMINATION MINING HOLES BY THE APR-2 ANEMOMETER

¹Bunko T.V., ¹Dudnik M.N.
¹IGTM NAS of Ukraine

UDC 622.279.3

Abstract. Works of YGTM NAS of Ukraine in area of development of facilities measurings of debit of methane from decontamination mining holes, and use for these aims of the APR-2 anemometer in the mode of turbine consume-measure are briefly described in the article. It is shown that this method is inapplicable for measuring of debit of methane outgoing from a mining hole in the extended range, as sharp increase of speed of gas stream influencing on impeller, by comparison to speed in a gas-withdrawal pipe, not only exceeds the top limit of measurings of anemometer but also causes mechanical tensions in impeller and its supports, exceeding the margin of safety. Therefore a primary transformer must in such device work in the mode of measuring of speed, т е to be is placed in a free gas stream. The method of such placing, measurings of speed of stream and additional hardwares which must be for this purpose used is developed. It will allow to overcome all existent decontamination mining holes by facilities of measurings, including measure the large debit of methane.
Keywords: Keywords: anemometer, degassing, takhometrycal transformer, current of air, dyffuzor, net, smoothing of speed of stream.

REFERENCES

1. Bunko, Т.М. and Dudnik, M.N. (2014), «About measuring of debit in decontamination mining holes by the anemometer of APR-2 in the mode of turbine debit-measure», Geotechnical mechanics, no. 122. - pp. 132-140
2. Idelchik, I.Ye. (1992), Spravochnik po gidravlicheskim soprotivleniyam [Reference book on hydraulic resistances], Mashinostroyeniye, Moscow, RU.

 About the authors:

Bunko Tatjana Viktorovna, Doctor of Technical Sciences (D.Sc), Senior Reseacher, Senior Reseacher in Department of problems of underground mines in great depths, M.S. Poljakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Dudnik Michail Nikolayevich, Master of Science in the Department of Rock Thermoatrodynamics and Automated Systems N.S. Polyakov Institutute of Geotechnical Mechanics under the National Academy of Sciences 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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