Improving the effectiveness of anchoring underground structures in permafrost areas

A new method of anchoring underground structures in permafrost areas, utilizing full anchors whose locks are based on the property that dispersed frozen rocks can significantly change their firmness depending on temperature, is considered. A new condition of energy efficiency of the use of this meth...

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Bibliographic Details
Published in:E3S web of conferences 2021-01, Vol.244, p.5027
Main Authors: Galkin, Aleksandr, Pankov, Vladimir
Format: Article
Language:English
Subjects:
Costs
Dispersion
Energy efficiency
Permafrost
Rocks
Underground structures
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Summary:A new method of anchoring underground structures in permafrost areas, utilizing full anchors whose locks are based on the property that dispersed frozen rocks can significantly change their firmness depending on temperature, is considered. A new condition of energy efficiency of the use of this method is formulated. Simple engineering formulas, on whose basis the assessment of the non-productive and productive energy expenses during the formation of the anchor lock, were devised. It was determined that in many cases relevant for practice, the non-productive energy expenses can constitute up to 30% of the productive energy expenses. A conclusion was made that in order to increase the efficiency and to expand the area of application of the new anchoring method in the mine workings of the permafrost areas built in the dispersed frozen rocks, it is necessary to search for technical and technological solutions to decrease the non-productive energy expenses in the front part of the anchor lock.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/202124405027