Review of Roof Support Options for Next Generation of Continuous Miner

Underground » Roadway Development

Published: May 16Project Number: C25003

Get ReportAuthor: Mahdi Zoorabadi, Winton Gale | SCT Operations

SCT Operations Pty Ltd have been requested by ACARP roadway development task group to conduct an assessment of roof support options for the next generation of continuous miners (CM). The feasibility of using a canopy-like system to protect the unsupported span of roadway, bolt placement close to the face and impact of an arc roof shape on the stability of roadways are studied in this project. These objectives were investigated by using 3D and 2D numerical modelling. Bulli Seam geological and geomechanical characterisation were used as a representative of a high stress environment.

A brief literature review on behaviour of the roadway close to the face is presented. The 3D numerical modelling was implemented to assess the stable width of unsupported span. The feasibility of using a canopy-like system to provide a stable working area and delay the rock bolt installation was simulated. The modelling showed that the roadway in Bulli Seam conditions will have unstable roof for unsupported span with a width of more than 4m.

An arbitrary canopy geometry and installation were chosen and the effectiveness of it under various support pressure was numerically studied. It was found that the canopy-like system is able to provide confinement to the roof rocks and does limit the roof deformation. The chosen geometry for canopy decreases the roof displacement significantly.

The impact of bolt placement close to the face on the stability of the roadway was also assessed by numerical simulation. It was proven that reducing the unsupported span by bolt placement 1m behind the face significantly improves the stability of roof. The impact of bolt replacement close to the face is similar to the effectiveness of the canopy-like system.

In last section of this project, effectiveness of arc roof shape to improve the stability of the roadway was studied by 2D numerical modelling. This simulation show that the arc roof shape does not significantly improve the stability a roadway excavated in Bulli Seam. Considering the operational difficulties of arc roof excavation, it is not recommended for Bulli Seam conditions.


Health and safety, productivity and environment initiatives.

Recently Completed Projects

C27039True Triaxial Strength Of Coal Measure Rocks And Its Impact On Roadway Stability And Coal Burst Assessment

Rocks in the ground are subject to a range of stresses. The stresses...

C3063Underground Vehicle Design Standards And Statutory Implications

The Australian underground diesel vehicle fleet has evolved since di...

C3064Conveyor Belting And Lagging Shear Characteristics - Drive Drum Slip

The primary aim of this project was to investigate the relationsh...


Open Cut

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

Recently Completed Projects

C26029Geological Controls On Fluorine And Phosphorus In Bowen Basin Coals

Increasing global restrictions on fluorine in product coal prompted ...

C28033Raw Ash To Yield Relationships

Correct outcomes in yield predictions for product ash from coal bore...

C27038Establishing Self-Sustaining And Recognisable Ecological Mine Rehabilitation

In recent years an increasing interest has been placed on mining ope...

Open Cut

Coal Preparation

Maximising throughput and yield while minimising costs and emissions.

Recently Completed Projects

C27064Dry Beneficiation Using FGX And X-Ray Sorters

Conventional dry processing methods engage a single beneficiation de...

C26010Multi-Sloped Screening Efficiency With Changing Strokes, Frequencies, Feed Solids And Feed Rates-Pilot Plant Study

Optimising multi-sloped screens is often described as an art and the...

C28059Impact Of Water Quality In Coal Handling And Preparations Plants

The objective of this project was to deliver a concise reference do...

Coal Preparation

Technical Market Support

Market acceptance and emphasising the advantages of Australian coals.

Technical Market Support

Mine Site Greenhouse Gas Mitigation

Mitigating greenhouse gas emissions from the production of coal.

Recently Completed Projects

C23052Novel Stone Dust Looping Process For Ventilation Air Methane Abatement

This multi‐phase project is concerned with the mitigation of m...

C27054Optimisation Of A Thermal Flow Reversal Reactor For Ventilation Air Methane Mitigation

Ventilation air methane (VAM) generally accounts for 50-85% of the t...

C28076Selective Absorption Of Methane By Ionic Liquids (SAMIL) - Phase 2 Demonstration In A Packed Bed Reactor

An alternative approach to high temperature oxidation of ventilation...

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


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