ACARP ACARP ACARP ACARP
Mine Site Greenhouse Gas Mitigation

Pre-mining Gas Technologies Optimisation

Mine Site Greenhouse Gas Mitigation » Mine Site Greenhouse Gas Mitigation

Published: June 06Project Number: C13020

Get ReportAuthor: Patrick Humphries, Alison Ogden, Fusheng Li | CSIRO Exploration & Minin

Gas emissions and problems in the Australian coalmines have increased significantly in recent years with some mines reaching greater depths and with a steep rise in longwall production levels and panel sizes. Traditionally, the main objective of the gas drainage operations is to meet the safety requirements of the underground coalmines. However, with the recent focus on reducing greenhouse gas (GHG) emissions from the mining industry, gas drainage and improved gas capture has become one of the critical GHG mitigation strategies. ACARP identified that the wider application of gas drainage as a mitigation strategy depends on achieving drainage costs that are less than the combined value of the associated safety, greenhouse and gas revenue benefits. 

The main objective of the project was to carry out detailed investigations of the pre-mining gas recovery technologies and to optimise the design and operational parameters, paying particular attention to the emerging medium radius drilling technology (MRD). The main focus was on maximising gas capture and reducing total gas drainage costs and fugitive greenhouse gas emissions. 

The major benefit of the project is the provision to the coal industry of an optimum and/or an alternative predrainage strategy to combat the ever-increasing gas emissions in coal mines. Surface predrainage allows substantially more lead time for effective gas drainage of the coal seams than other methods currently in use and improves the quality and consistency of mine gas production, which will enable the effective utilisation of mine gas and results in reduced GHG emissions. The successful completion of the project also results in substantial productivity, safety and cost benefits to the underground coalmines, by way of reduced gateroad development requirements, in addition to the benefits of GHG mitigation for the industry.

The project studied field sites (coal mines) in the Bowen Basin as a basis for modelling and optimisation. The project was carried out in close collaboration with the mine management.  The work program consisted of the following components:

    • Geological modelling and geotechnical assessment, including 3D Visualisation
    • Review studies of the data obtained from previous surface to inseam gas drainage trials
    • Gas reservoir modelling studies to optimise the following design parameters
      • Length of wells, (and diameter, if found to be critical)
      • Water pumping rate with respect to gas desorption characteristics
      • Layouts and directions – with respect to cleat orientation
      • Timing – with respect to both gas drainage and investment 
      • Multiple seams drainage options and their effect on Specific gas emissions (SGE)
    • Development of economic models and investigation of various options (including u/g and surface)
    • A 3-D Visualisation of the MRD technique
    • Development of guidelines and technology transfer

Underground

Health and safety, productivity and environment initiatives.

Recently Completed Projects

C34007Evaluating Toxicity Of Different Types Of Respirable Crystalline Silica Particles To Lung Cells And Tissues

Silica dust represents one of the most significant occupational haza...

C29010In-Situ Stress Measurement Using Non-Destructive Techniques (Ndts)

Rock in depth is subjected to stresses due to overlaying burden and ...

C33029Review Longwall Face Ventilation To Mitigate Goaf Gas Emissions Onto Walkways And Tailgate End

As longwall mining increasingly targets deeper coal seams, managing ...

Underground

Open Cut

Safety, productivity and the right to operate are priorities for open cut mine research.

Recently Completed Projects

C35029Renewable Energy As Post-Mining Land Use

In 2020, the Queensland Resources Council (QRC), in partnership with...

C33036Radar Tyre Monitor System

This project focussed on trialling a radar sensing technology design...

C26020Preventing Fatigue Cracking Via Proactive Surface Dressing

Fatigue cracking of plant and equipment presents a significant chall...

Open Cut

Coal Preparation

Maximising throughput and yield while minimising costs and emissions.

Recently Completed Projects

C28061Quantitative Based Structural Integrity Evaluations Using Modal Parameters Estimation

This project focused on the development and implementation of a quan...

C34039Development Of A Soft Sensor For Predicting Dense Medium Cyclones Performance

This project details the development of a DMC soft sensor for modell...

C34041A Coal Spiral For The 2020S

The objective of this project is to develop an enhanced coal process...

Coal Preparation

Technical Market Support

Market acceptance and emphasising the advantages of Australian coals.

Recently Completed Projects

C35039Impact Of Coal Grain Composition And Macerals Association On Fluidity Development In Australian Coals

The coke quality prediction models use thermoplastic terms as key ex...

C36004Physical And Chemical Structure Characterisation Of Biomass For Biocoke Production

Partial substitution of coking coal with renewable biomass is identi...

C35037Examination Of Contraction Pre And Post Resolidification Using A High Temperature Dilatation Rig

This project examined the contraction of coking coal samples, both p...

Technical Market Support

Mine Site Greenhouse Gas Mitigation

Mitigating greenhouse gas emissions from the production of coal.

Recently Completed Projects

C34066Safe Operation Of Catalytic Reactors For The Oxidation Of VAM Operating Under Abnormal Reaction Conditions

The catalyst Pd/TS-1 has shown excellent activity in oxidising venti...

C28076Selective Absorption Of Methane By Ionic Liquids (SAMIL)

This third and final stage of this project was the culmination of a ...

C29069Low-Cost Catalyst Materials For Effective VAM Catalytic Oxidation

Application of ventilation air methane (VAM) thermal oxidiser requir...

Mine Site Greenhouse Gas Mitigation

Low Emission Coal Use

Step-change technologies aimed at reducing greenhouse gas emissions.

Recently Completed Projects

C17060BGasification Of Australian Coals

Four Australian coals were trialled in the Siemens 5 MWth pilot scale ga...

C17060AOxyfuel Technology For Carbon Capture And Storage Critical Clean Coal Technology - Interim Support

The status of oxy-fuel technology for first-generation plant is indicate...

C18007Review Of Underground Coal Gasification

This report consists of a broad review of underground coal gasification,...

Low Emission Coal Use

Mining And The Community

The relationship between mines and the local community.

Recently Completed Projects

C16027Assessing Housing And Labour Market Impacts Of Mining Developments In Bowen Basin Communities

The focus of this ACARP-funded project has been to identify a number...

C22029Understanding And Managing Cumulative Impacts Of Coal Mining And Other Land Uses In Regions With Diversified Economies

The coal industry operates in the context of competing land-uses that sh...

C23016Approval And Planning Assessment Of Black Coal Mines In NSW And Qld: A Review Of Economic Assessment Techniques

This reports on issues surrounding economic assessment and analysis ...

Mining And The Community

NERDDC

National Energy Research,Development & Demonstration Council (NERDDC) reports - pre 1992.

Recently Completed Projects

1609-C1609Self Heating of Spoil Piles from Open Cut Coal Mines

Self Heating of Spoil Piles from Open Cut Coal Mines

1301-C1301Stress Control Methods for Optimised Development...

Stress Control Methods for Optimised Development and Extraction Operations

0033-C1356Commissioned Report: Australian Thermal Coals...

Commissioned Report: Australian Thermal Coals - An Industry Handbook

NERDDC