The Mining Challenge of Handling Coal Seam Hydrogen Sulphide


This study addresses Hydrogen Sulphide (H₂S) in coal seams. The objectives of the project were to undertake a comprehensive series of interrelated studies to gain a full understanding of this complex problem. The goal was to understand how, where and why high concentration zones of H₂S occur, how does gas release from the coal mass occur, can concentrations be diluted or neutralised through improved ventilation, water, chemical solution sprays or infusion and can mining approaches be modified to contain the problem efficiently? A multi-disciplined approach was used for related investigations. This paper gives an overview of the properties, occurrence, threshold limits and sources of H₂S. It also provides the methods of predicting in-situ H₂S gas liberation rate that includes the sampling methods and determining H₂S content of coal samples, modelling of the gas within the coal seam and detection and monitoring systems. Finally, to ensure a safe working environment at all times while mining through H₂S zones, different methods of dealing with this gas are discussed.


Mining Engineering


Australian Coal Association Research Program
Queensland Oaky Creek Collier
Southern Collier

Keywords and Phrases

Coal Seams; Hydrogen Sulphide; Mines

Document Type

Article - Conference proceedings

Document Version


File Type





© 2000 Queensland Mining Industry, All rights reserved.

Publication Date

01 Aug 2000