ABOUT MEASURING OF DEBIT IN DECONTAMINATION MINING HOLES BY THE APR-2 ANEMOMETER IN MODE OF TURBINE CONSUME-MEASURE

Details

Parent Category: Geo-Technical Mechanics, 2015

Category: Geo-Technical Mechanics, 2015, Issue 122

UDC 622.279.3

Authors:

Bunko T.V., D.Sc. (Tech.), Senior Researcher,

Dudnik M.N., M.Sс. (Tech.) (IGTM NAS of Ukraine)

Abstract.

It is marked in the article, that the existent method of measurings of debit of methane in the opened decontamination mining holes is uneffective, and measuring of the indicated debit by the takhometrycal anemometer APR-2 gives large errors because of difference of diameter gas-withdrawal pipe and aerodynamic transformer. For the removal of the indicated failing aerodynamic prefix co-ordinate entrance and output resistances of takhometrycal transformer with hydraulic resistance of the opened output section of gas-withdrawal pipe is developed. Description of method and formula, applied by the «Höntsch firm» for determination of middle speed in the section of pipe with the set in it transformer, having a cylindrical corps, and also information for the indicated calculation depending on the diameter of pipeline, is resulted. The questions, related to expansion of range and accuracy of measurings speed of the APR-2 current of air with the purpose of possibility application of him for measuring of speeds of stream in decontamination mining holes exceeding an existent range 0,2 - 20,0 м/с, are considered.

Keywords: anemometer, degassing, takhometrycal transformer, current of air, aerodynamic prefix.

References:

1. Idelchik, I.Ye. (1992), Spravochnikpogidravlicheskimsoprotivleniyam[Reference book  on hydraulic resistances], Mashinostroyeniye, Moscow, RU.

2.   Idelchik, I.Ye. (1982), Nekotoriye effekty i paradoksy v aerodinamike i gidravlike [Some effects and paradoxes in aerodynamics and hydraulics], Mashsnostroyeniye, Moscow, SU.

3. Dudnik, М. N. (2012), «Analysis of methods and controls to the mixture expense of methane-air mixture in decontamination pipelines», Geotechnical mechanics, no. 107, pp. 274-282.

4. Dudnik, М. N. (2013), «Choise and ground of the air-dynamic parameters krylchatky portable mine anemometer APR-2 », Geotechnical mechanics, no. 109, pp. 193-200.

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. Polyakov 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 Thermoaerodynamics and Automated Systems, М.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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