Mine ventilation measurements with tracer gas method and evaluations of turbulent diffusion coeffIcient

Nuhindro Priagung Widodo, K. Sasaki, R. S. Gautama

研究成果: ジャーナルへの寄稿記事

10 引用 (Scopus)

抄録

Tracer gas measurements have been carried out at the Pongkor underground gold mine, Indonesia, to evaluate mine ventilation flows and to investigate the effective turbulent diffusion coefficients in mine airways. The airflow routes and quantity, and the diffusion coefficient have been obtained by matching the measurements with numerical simulations using the advection-diffusion equation. Two leakages with flow quantity of 26.7 and 36.7 m3/s were detected. Reduction of leakages have been measured with the method after stopping the leakage routes. The turbulent diffusion coefficients for the simple airways have good agreement with the Taylor equation. However, for complex airways in operating mines, the coefficients show higher values (1.5 to 32 times) than that obtained by the Taylor equation and these have been compared with the data measured in the Kushiro coal mine, Japan. It is mainly affected by the ratio of airway length over equivalent diameter and airway frictions, but airflow mixing along the airway also has an effect on the diffusion coefficient.

元の言語英語
ページ(範囲)60-69
ページ数10
ジャーナルInternational Journal of Mining, Reclamation and Environment
22
発行部数1
DOI
出版物ステータス出版済み - 3 1 2008

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Mine ventilation
turbulent diffusion
ventilation
leakage
tracer
airflow
Gases
gas
advection-diffusion equation
gold mine
coal mine
friction
Gas fuel measurement
Gold mines
Advection
Coal mines
simulation
method
evaluation
Gas

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geology
  • Earth-Surface Processes
  • Management of Technology and Innovation

これを引用

Mine ventilation measurements with tracer gas method and evaluations of turbulent diffusion coeffIcient. / Widodo, Nuhindro Priagung; Sasaki, K.; Gautama, R. S.

:: International Journal of Mining, Reclamation and Environment, 巻 22, 番号 1, 01.03.2008, p. 60-69.

研究成果: ジャーナルへの寄稿記事

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