Influence of the parameters of the layer of ore being brought down on its freezing and losses during the face ore draw
Application of mining systems with ore caving and adjacent strata, which do not entail high expenditures on delivery of freed ore and rock pressure management, allows to considerably increase efficiency of underground mining of ore deposits in the cryolithic zone. However, their use where permafrost...
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2020
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ftdoajarticles:oai:doaj.org/article:f423c834e2a74bc5abe1a9c1b7c56195 2023-05-15T17:58:09+02:00 Influence of the parameters of the layer of ore being brought down on its freezing and losses during the face ore draw Zubkov Vladimir Petrov Dmitrii Bekbergenov Dosanbai 2020-01-01T00:00:00Z https://doi.org/10.1051/e3sconf/202019201014 https://doaj.org/article/f423c834e2a74bc5abe1a9c1b7c56195 EN FR eng fre EDP Sciences https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/52/e3sconf_pcdg2020_01014.pdf https://doaj.org/toc/2267-1242 2267-1242 doi:10.1051/e3sconf/202019201014 https://doaj.org/article/f423c834e2a74bc5abe1a9c1b7c56195 E3S Web of Conferences, Vol 192, p 01014 (2020) underground mining cryolithic zone caving drawing congealing parameters of broken-up layer ore losses Environmental sciences GE1-350 article 2020 ftdoajarticles https://doi.org/10.1051/e3sconf/202019201014 2022-12-31T05:45:46Z Application of mining systems with ore caving and adjacent strata, which do not entail high expenditures on delivery of freed ore and rock pressure management, allows to considerably increase efficiency of underground mining of ore deposits in the cryolithic zone. However, their use where permafrost formations are prevalent, requires taking into account factors complicating mining operations, in particular, the congealing of broken ore in the stoping zone. In order to assess the impact of thermal and humidity conditions on the completeness of reserves recovery, a study was carried out to determine the dependence between the volume of losses of broken ore prone to congealing and the width and height of the layer being brought down. Experimental studies were conducted by physical simulation in a cryo chamber on a laboratory bench. The ore drawing was conducted in a uniform sequence at the temperature in the stoping zone of minus 5 ˚C. The final parameter to be determined the loss of ore prone to congealing, was defined as the difference between the mass of ore in the block and the mass of ore drawn. It has been established that the losses of the broken ore due to congealing increase significantly when the depth of the layer being freed decreases and the width increases. The established patterns of influence of parameters of a beaten layer on losses of ore mass will be used during development of recommendations on technology of drawing of ore mass prone to congealing in the negative thermal conditions of underground mines of a cryolithic zone. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Freed ENVELOPE(164.333,164.333,-71.483,-71.483) E3S Web of Conferences 192 01014 |
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Open Polar |
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English French |
topic |
underground mining cryolithic zone caving drawing congealing parameters of broken-up layer ore losses Environmental sciences GE1-350 |
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underground mining cryolithic zone caving drawing congealing parameters of broken-up layer ore losses Environmental sciences GE1-350 Zubkov Vladimir Petrov Dmitrii Bekbergenov Dosanbai Influence of the parameters of the layer of ore being brought down on its freezing and losses during the face ore draw |
topic_facet |
underground mining cryolithic zone caving drawing congealing parameters of broken-up layer ore losses Environmental sciences GE1-350 |
description |
Application of mining systems with ore caving and adjacent strata, which do not entail high expenditures on delivery of freed ore and rock pressure management, allows to considerably increase efficiency of underground mining of ore deposits in the cryolithic zone. However, their use where permafrost formations are prevalent, requires taking into account factors complicating mining operations, in particular, the congealing of broken ore in the stoping zone. In order to assess the impact of thermal and humidity conditions on the completeness of reserves recovery, a study was carried out to determine the dependence between the volume of losses of broken ore prone to congealing and the width and height of the layer being brought down. Experimental studies were conducted by physical simulation in a cryo chamber on a laboratory bench. The ore drawing was conducted in a uniform sequence at the temperature in the stoping zone of minus 5 ˚C. The final parameter to be determined the loss of ore prone to congealing, was defined as the difference between the mass of ore in the block and the mass of ore drawn. It has been established that the losses of the broken ore due to congealing increase significantly when the depth of the layer being freed decreases and the width increases. The established patterns of influence of parameters of a beaten layer on losses of ore mass will be used during development of recommendations on technology of drawing of ore mass prone to congealing in the negative thermal conditions of underground mines of a cryolithic zone. |
format |
Article in Journal/Newspaper |
author |
Zubkov Vladimir Petrov Dmitrii Bekbergenov Dosanbai |
author_facet |
Zubkov Vladimir Petrov Dmitrii Bekbergenov Dosanbai |
author_sort |
Zubkov Vladimir |
title |
Influence of the parameters of the layer of ore being brought down on its freezing and losses during the face ore draw |
title_short |
Influence of the parameters of the layer of ore being brought down on its freezing and losses during the face ore draw |
title_full |
Influence of the parameters of the layer of ore being brought down on its freezing and losses during the face ore draw |
title_fullStr |
Influence of the parameters of the layer of ore being brought down on its freezing and losses during the face ore draw |
title_full_unstemmed |
Influence of the parameters of the layer of ore being brought down on its freezing and losses during the face ore draw |
title_sort |
influence of the parameters of the layer of ore being brought down on its freezing and losses during the face ore draw |
publisher |
EDP Sciences |
publishDate |
2020 |
url |
https://doi.org/10.1051/e3sconf/202019201014 https://doaj.org/article/f423c834e2a74bc5abe1a9c1b7c56195 |
long_lat |
ENVELOPE(164.333,164.333,-71.483,-71.483) |
geographic |
Freed |
geographic_facet |
Freed |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
E3S Web of Conferences, Vol 192, p 01014 (2020) |
op_relation |
https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/52/e3sconf_pcdg2020_01014.pdf https://doaj.org/toc/2267-1242 2267-1242 doi:10.1051/e3sconf/202019201014 https://doaj.org/article/f423c834e2a74bc5abe1a9c1b7c56195 |
op_doi |
https://doi.org/10.1051/e3sconf/202019201014 |
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E3S Web of Conferences |
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192 |
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01014 |
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1766166684973924352 |