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| 1 | Closed-loop bulk air conditioning: A renewable energy-based system for deep mines in arctic regions显示文摘With depletion of shallow deposits,the number of underground mines expected to reach more than 3 km depth during their lifetime is growing.Although surface cooling plants are mostly effective in mine airconditioning,usually secondary cooling units are needed below 2 kmdepth.This need emerges due to the elevated thermal impacts caused by auto-compression of mine air as well as heat emissions from strata and mine machinery.As a result,in cold climates,like Canada,ultra-deep mines need their secondary underground cooling plants running year-round while the intake air must be heated to protect the sensitive machinery and liners from freezing during the winter season.To cool mine air,horizontal bulk-airconditioners with direct spray cooling systems are commonly used due to their high performance.Conventionally,sprayed water in bulk-air-coolers are mechanically circulated and refrigerated in coupled refrigeration plants.This set up can be transformed to a natural cooling/heating process by resurfacing the warm underground bulk-air-cooler spray water for mine air heating on the surface and re-sinking the chilled water for cooling in the underground bulk air coolers.This could significantly cut-down the fossil-fuel consumption in burners for mine air pre-conditioning and refrigeration cost when applicable.This paper presents an anonymous real-life example to study the feasibility of the proposed idea for an ultra-deep Canadian mine. | Ali Fahrettin Kuyuk Seyed Ali Ghoreishi-Madiseh Faramarz P.Hassani | 2020 | International Journal of Mining Science and Technology2020，30，4： | 3 |
| 2 | Friction factor correlation for airflow through broken rocks and its applications in mine ventilation显示文摘The Atkinson equation along with its friction factor is commonly used to estimate pressure requirement in mine ventilation.However,friction factor correlation of flow through broken rock,typically found in blasted stope,gob,rock pit or block caving rock deposits,etc.,is currently unavailable.Also,it is impractical to conduct direct measurements of flow resistance in an inaccessible broken rock zone.This paper aims to develop a new friction factor correlation of flow through broken rock that can be used directly in Atkinson equation.The proposed correlation is valid for broken rocks with diameter between 0.04 and 1.2 m and porosity ranging from 0.23 to 0.7. | Leyla Amiri Seyed Ali Ghoreishi-Madiseh Ferri P.Hassani Agus P.Sasmito | 2020 | International Journal of Mining Science and Technology2020，30，4： | 1 |
| 3 | 根据充填矿浆特性及流动状况选择压力损失的预测方法显示文摘本文介绍了选择水平管道内矿浆流的压力损失预测方法。叙述了给定流速、固体浓度和粒度的复合性浆体及流动状况,并概述了其压力损失预测的合适方法。从本文讨论的诸条件的宽阔范围可发现,实际区域变化是从水力输送低浓度矿浆到浓相(dense-phase)输送地下矿山的膏状充填料。 | Riadh Bouzaiene Ferri P.Hassani 李丛奎 | 1993 | 有色矿山1993，，4： | 0 |
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