IMPROVEMENT IN DETERMINATION OF AN AVERAGE MINE OPENING PROFILE
[摘要] 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...
[发布日期] [发布机构]
[效力级别] [学科分类] 地质学
[关键词] Mine ventilation;Underground openings;Cross-sectional area;Portable device;Illumination of the cross-section;Ventilation resistance [时效性]
