A statistical determination of methane emission from coalbeds - case study


Sarac S. , Sensogut C.

JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY, cilt.103, ss.209-211, 2003 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 103 Konu: 3
  • Basım Tarihi: 2003
  • Dergi Adı: JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY
  • Sayfa Sayıları: ss.209-211

Özet

In this study, a statistical model is suggested in order to determine the methane emission from a working seam. in the proposed method, methane concentrations which are systematically measured in return airway are the sample values, and the calculated statistical parameter is the upper confidence limit of the average of these values. At any given time, the probability of methane concentration in the return airflow to be lower than the calculated upper confidence limit value is 97.5%. The statistical method has been applied to the panel 206 of Armutcuk Mine, Turkish Hardcoal Enterprises. The calculated methane emission value for the considered shift was 15.18 m(3)/t.