(一)问题的提出 金河磷矿由马槽滩和岳家山两个矿区组成。矿区采用组合平峒溜井开拓,多中段生产。采矿方法主要采用有底柱、无底柱分段崩落法,房柱法及底盘漏斗全面采矿法。通风系统为大区集中对角压入式供风,其通风网路属于串联形式。 (A) the question raised Jinhe phosphate mine by the marsh beach and Yuejiashan two mines. The mining area is combined with Pingdingshan Chute to open up, and more mid-section production. Mining methods are mainly bottomed, non-pillar sub-caving method, the Housing and column funnel mining method. Ventilation system for the regional focus on the diagonal for the wind, the ventilation network is in series form.