<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The authors of the present paper designed and constructed a prototype of an instrument which enables fully automated determination of the desorbable methane content and effective diffusion coefficient in underground conditions. Due to microprocessor analysis of the recorded data and the application of the mathematical model of the diffusion process, it is possible to automatically determine the amount of methane whose release from a coal sample occurred before the sample was placed within a measuring instrument. It is also possible to carry out follow-up extrapolation of the recorded data so the time duration needed to determine reliable results can be reduced. The instrument was tested and optimized, and a number of copies sufficient for performing underground tests were constructed. The concept of the instrument represents a totally new approach to the observation of gas release from a coal sample. Instead of short-period measurements, virtually the whole process of methane release from coal is registered and analysed. This is possibly due to the use of a grain fraction lower than one mm which is presently applied for the sake of evaluating the methane- bearing capacity and desorption intensity.</p></abstract>

The authors of the present paper designed and constructed a prototype of an instrument which enables fully automated determination of the desorbable methane content and effective diffusion coefficient in underground conditions. Due to microprocessor analysis of the recorded data and the application of the mathematical model of the diffusion process, it is possible to automatically determine the amount of methane whose release from a coal sample occurred before the sample was placed within a measuring instrument. It is also possible to carry out follow-up extrapolation of the recorded data so the time duration needed to determine reliable results can be reduced. The instrument was tested and optimized, and a number of copies sufficient for performing underground tests were constructed. The concept of the instrument represents a totally new approach to the observation of gas release from a coal sample. Instead of short-period measurements, virtually the whole process of methane release from coal is registered and analysed. This is possibly due to the use of a grain fraction lower than one mm which is presently applied for the sake of evaluating the methane- bearing capacity and desorption intensity.

New Instruments and Methods for Analysing the Coal-Methane System

The Strata Mechanics Research Institute of the Polish Academy of Sciences

Studia Geotechnica et Mechanica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"New Instruments and Methods for Analysing the Coal-Methane System"}

The authors of the present paper designed and constructed a prototype of an instrument which enables fully automated determination of the desorbable methane...

New Instruments and Methods for Analysing the Coal-Methane System

Publié en ligne: 27 mars 2015

Pages: 85 - 91

DOI: https://doi.org/10.1515/sgem-2015-0010

Mots clés
desorption, methane, carbon dioxide, coal, outburst, diffusion

© by Norbert Skoczylas

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

New Instruments and Methods for Analysing the Coal-Methane System

Publié en ligne: 27 mars 2015

Pages: 85 - 91

DOI: https://doi.org/10.1515/sgem-2015-0010

Mots clésdesorption, methane, carbon dioxide, coal, outburst, diffusion

© by Norbert Skoczylas

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
desorption, methane, carbon dioxide, coal, outburst, diffusion