Mitigation of air leakage through the goaf of retreat coalfaces
type: Dataset
description: In HBL (Lorraine coalfield), large amounts of air are used in order to dilute methane in retreat coalfaces. A parasite flow of air exists in the goaf, leading to the risk of spontaneous combustion of remaining coal as well as to a diminution of firedamp drainage efficiency. The evaluation of various means for reducing this flow has been done through the use of models : a physical model and a numerical model based on a CFD package. The efficiency on air leakage reduction, decrease of methane concentration in the air return or increase of methane concentration of drainage has been quantified for one or more stoppings set up in the abandoned gates or for their backfilling. The influence is small but positive as regards drainage efficiency improvement but almost zero on risk mitigation of spontaneous combustion in the goaf.
landing page: 28. Conference on Safety in Mines Research Institutes
keyword: barrages
keyword: conference-papers
keyword: fuite-dair
keyword: grisou
keyword: infoeu-reposemanticsconferenceobject
keyword: maquette
keyword: modele
keyword: remblayage
keyword: sdeenvironmental-sciences
issued: 2026-05-05T17:20:51.465293
modified: 2026-05-05T17:20:51.465297
language: en
contact point: Organization
  fn: CCSD

test_moissonnage_selune
type: Agent

Mitigation of air leakage through the goaf of retreat coalfaces
type: Distribution
format: HTML
access URL: https://ineris.hal.science/ineris-00972170
issued: 2026-05-05T17:20:51.471016
modified: 2026-05-05T17:20:51.452502