Measurement of the Degassing Well Flow Rate

Abstract

The paper considers a method to determine gas flow in a degassing well. It is based on the theory of medium flow in pipes, the flow meter design developed by the authors and tested in measuring gas output at a degassing well in the in situ experiments at the Boldyrevskiy formation at the S.M. Kirov mine field of the JSC "SUEK--Kuzbass", algorithm of calculating the gas flow rate, numerical simulation of the gas flows inside the device within the framework of the continuum mechanics general principles. Influence degree of the measuring unit parameters developed by the authors was determined, including the flow meter walls roughness, the flowing medium viscosity and the state of the diaphragm hole edges, on results of measuring the gas flow rate outcoming from the well and entering the degassing system of the coal mining enterprise. Pressure alteration dynamics in the well were considered taking into account random fluctuations caused by the unique degassed formation structure. Pressure in the well depends, among other things, on the stress-strain state of the carbon rock mass directly connected with development of the mining operations. Correspondence of the gas flow rates was determined, they were calculated using standard methods and obtained as a result of numerical simulation was established, which could replace experimental calibration of the flow meter

Please cite this article in English as:

Shlyapin A.V., Trofimov V.A., Filippov Yu.A. Measurement of the degassing well flow rate. Herald of the Bauman Moscow State Technical University, Series Mechanical Engineering, 2023, no. 4 (147), pp. 68--87 (in Russ.). DOI: https://doi.org/10.18698/0236-3941-2023-4-68-87

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