Objective
Increasing mining depth and concentration of coal faces are leading to a rise in rock stresses. Under certain geological and geometrical conditions these can lead to rockbursts. Rockburst hazards thus remain a major problem in hard coal mining.
The only stress-relieving method approved so far - stress-relief drilling - is fraught with considerable technical drawbacks:
- it is difficult to integrate into mining operations, particularly in faces with high stresses and in thin seams.
- the time and effort is considerable, both for transport and setup of the drilling unit and for drilling itself.
- an uneven loss of strength in the solid face can lead to deteriorations in the roof.
- fine drill cuttings increase the fire hazard from spontaneous combustion.
These drawbacks do not arise to the same extent in shot-firing and this method is thus to be developed in this project to ensure that stress can be relieved in safety.
The project is to comprise the following work packages.
Work package 1: Drawing up a measurement programme
Work package 2: Destressing shot-firing with measurement of the results
Work package 3: Analysis and improvement of the method
Work package 4: Preparing operating instructions.
Fields of science (EuroSciVoc)
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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Coordinator
44623 Herne
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.