IMPROVEMENT IN DETERMINATION OF AN AVERAGE MINE OPENING PROFILE
Determination of air current resistance in a mine opening with allowable error depends very much on knowing the exact values of its geometric characteristics, i.e. length, cross-section, and perimeter. Eventual error in determining an opening profile grows when calculating the resistance by raising...
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| Format: | Article |
| Language: | English |
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Faculty of Mining, Geology and Petroleum Engineering
1992-12-01
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| Series: | Rudarsko-geološko-naftni Zbornik |
| Subjects: | |
| Online Access: | http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=39000&lang=en |
| _version_ | 1797706246284902400 |
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| author | Vladimir Rendulić |
| author_facet | Vladimir Rendulić |
| author_sort | Vladimir Rendulić |
| collection | DOAJ |
| description | Determination of air current resistance in a mine opening with allowable error depends very much on knowing the exact values of its geometric characteristics, i.e. length, cross-section, and perimeter. Eventual error in determining an opening profile grows when calculating the resistance by raising to the third power. The paper describes the construction of a portable device for illumination of cross-sectional area for taking photographs. Determination of geometric characteristics of an average stage profile of a mine opening is analytically and graphically presented herewith by application of F3/U relation of measured profiles (the paper is published in Croatian). |
| first_indexed | 2024-03-12T05:49:25Z |
| format | Article |
| id | doaj.art-48220796da384d199978e28ec771fd01 |
| institution | Directory Open Access Journal |
| issn | 0353-4529 1849-0409 |
| language | English |
| last_indexed | 2024-03-12T05:49:25Z |
| publishDate | 1992-12-01 |
| publisher | Faculty of Mining, Geology and Petroleum Engineering |
| record_format | Article |
| series | Rudarsko-geološko-naftni Zbornik |
| spelling | doaj.art-48220796da384d199978e28ec771fd012023-09-03T05:21:17ZengFaculty of Mining, Geology and Petroleum EngineeringRudarsko-geološko-naftni Zbornik0353-45291849-04091992-12-0141105109IMPROVEMENT IN DETERMINATION OF AN AVERAGE MINE OPENING PROFILEVladimir Rendulić 0Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Pierottijeva 6, HR-10000 Zagreb, CroatiaDetermination of air current resistance in a mine opening with allowable error depends very much on knowing the exact values of its geometric characteristics, i.e. length, cross-section, and perimeter. Eventual error in determining an opening profile grows when calculating the resistance by raising to the third power. The paper describes the construction of a portable device for illumination of cross-sectional area for taking photographs. Determination of geometric characteristics of an average stage profile of a mine opening is analytically and graphically presented herewith by application of F3/U relation of measured profiles (the paper is published in Croatian).http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=39000&lang=enMine ventilationUnderground openingsCross-sectional areaPortable deviceIllumination of the cross-sectionVentilation resistance |
| spellingShingle | Vladimir Rendulić IMPROVEMENT IN DETERMINATION OF AN AVERAGE MINE OPENING PROFILE Rudarsko-geološko-naftni Zbornik Mine ventilation Underground openings Cross-sectional area Portable device Illumination of the cross-section Ventilation resistance |
| title | IMPROVEMENT IN DETERMINATION OF AN AVERAGE MINE OPENING PROFILE |
| title_full | IMPROVEMENT IN DETERMINATION OF AN AVERAGE MINE OPENING PROFILE |
| title_fullStr | IMPROVEMENT IN DETERMINATION OF AN AVERAGE MINE OPENING PROFILE |
| title_full_unstemmed | IMPROVEMENT IN DETERMINATION OF AN AVERAGE MINE OPENING PROFILE |
| title_short | IMPROVEMENT IN DETERMINATION OF AN AVERAGE MINE OPENING PROFILE |
| title_sort | improvement in determination of an average mine opening profile |
| topic | Mine ventilation Underground openings Cross-sectional area Portable device Illumination of the cross-section Ventilation resistance |
| url | http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=39000&lang=en |
| work_keys_str_mv | AT vladimirrendulic improvementindeterminationofanaveragemineopeningprofile |