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本文根据矿井涌水量变化特点，首次引用作者在文1中提出的灰色──周期外延组合预测模型。经实践证明，应用效果很好。对矿井防治水工作有指导意义。
Based on the characteristics of mine water inflow, this paper first refers to the combined model of gray ──periodic epitaxy proposed by author in article 1. Practice has proved that the application works well. Mine water control work has instructive significance.