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提出了矿井排水装置最佳运行工况点的概念以及以最佳运行工况点来确定排水管路数和排水管径的新思想；推导出了计算公式，给出了计算实例。
The concept of optimal operating point of mine drainage system and the new idea of determining the number of drainage pipes and the diameter of drainage pipe with the best operating point were put forward. The calculation formula was deduced and the calculation example was given.