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美国亚利桑那州南部的圣曼纽尔矿 (SanManuelmine)为了扩建 ,要将埋藏深度在 10 50～ 1140m的下卡拉马祖矿体包括进来 ,完成了一项矿井通风研究工作 ,建立一套基础通风模型。矿井作业区的深度和设计规模增大 ,需要重新设计矿井通风与冷却系统并且需要应用通风网路模型 ,以适应所考虑到的各种不同方案。这套模型的依据是为了获得典型风道和通风钻孔具有代表性的摩擦系数和阻力值而对下卡拉马祖区段进行的局部通风调查的结果。鉴于该矿的全部主扇风机都设置在井下 ,而且各新水平又与矿井上部相联结 ,所以上部水平均作为具有各自代表性通风阻力的单独分支包括在这一模型之中。此模型的用途是 :在为了优化矿井通风系统而做出某些改变时或者在由于随着矿井开发的进展 ,具体条件产生变化而做出某些改变时 ,对各种不同情况进行分析研究。文中叙述了这项综合性通风研究所采用的方法 ,探讨了通风模型所做的各种改变 ,选择介绍了所分析的几种情况 ,并且详述了矿井通风系统的最终改变结果。
SanManuelmine, southern Arizona, USA For expansion, a lower-level Kalamazoo burial depth of 1050 to 1140 m was to be included to complete a mine ventilation study and establish a basic ventilation model. The depth and design size of the mine operation area has increased and there is a need to redesign the mine ventilation and cooling system and the application of a ventilation network model to accommodate the various scenarios considered. The model is based on the results of a local ventilation survey of the Lower Kalamazoo section to obtain representative coefficients of friction and resistance values for typical duct and ventilation boreholes. Since all of the main fans in the mine are located downhole and each new level is connected to the upper part of the mine, the upper level is included in this model as separate branches with their respective representative ventilation resistances. The purpose of this model is to analyze various situations when certain changes are made to optimize mine ventilation systems or when certain changes occur due to changes in specific conditions as mine development progresses. The paper describes the methodology used in this integrated ventilation study, examines the various changes made by the ventilation model, selects several cases analyzed, and details the final changes to the ventilation system of the mine.