据有关资料介绍,我国统配煤矿有5千多台主排水设备,其排水电耗占总电耗的27.3%,约三十亿度。涌水量较大的涟邵矿务局恩口矿,排水电耗占全矿总年电耗的75%,焦作煤矿每采1吨煤,平均要排除地下水50m~3,排水电耗占全矿总电耗的60%。如此高的排水电耗,严重地影响了煤矿经济效益的提高。因此,努力降低排水电耗,是提高经济效益的重要途径。一、改进选型设计的计算方法现行煤矿排水设备选型计算方法是从吸、排水管的经济流速出发,力求使水泵运行在泵的最高效率点附近,即运行在泵的工业利用区内。这种方法的不足是只考虑了水泵本身的效率,而没有考虑管路效率。事实上,作为 According to relevant information, there are more than 5,000 main drainage facilities in our country’s coal mines. Its drainage electricity consumption accounts for 27.3% of the total power consumption, about 3 billion degrees. Lianshui Mining Bureau Enkou Mine, which has large inflow, accounts for 75% of the total annual power consumption of the entire mine, 1 mt of coal per Jiaozuo Mine, averaging 50m ~ 3 of underground water, drainage electricity consumption of the whole mine Total power consumption of 60%. Such a high drainage power consumption, seriously affecting the economic benefits of coal mines. Therefore, efforts to reduce drainage electricity consumption is an important way to improve economic efficiency. First, to improve the selection design of the calculation method The selection of existing coal mine drainage equipment is calculated from the suction, drainage of the economic flow rate, and strive to make the pump running in the vicinity of the maximum efficiency of the pump, which runs in the pump industrial use zone. The disadvantage of this method is that only consider the efficiency of the pump itself, without considering the pipeline efficiency. In fact, as