我矿井下排水设备选用150D多级离心泵集中接力排水,各中段排水高度120-180 m。与水泵配套的底阀是翻板式结构,底阀安装于吸水管末端,沉没于吸水井4-5 m处(图1)。 自建矿以来,曾采用过多种无底阀排水,但因井下特殊环境、排出的水是海水、水泵房淋水大及非正常断电等因素,使用效果不佳。因此一直延用水下底阀装置排水。 I mine drainage equipment used 150D multistage centrifugal pump concentrated relay drainage, the middle drainage height 120-180 m. The bottom valve matched with the pump is a flap type structure. The bottom valve is installed at the end of the suction pipe and sank at 4-5 m of the suction well (Figure 1). Since the construction of the mine, there have been a variety of bottomless valve drainage, but due to the special underground environment, the discharge of water is seawater, water pump room and other large non-normal water power failure, the use of poor results. Therefore, the use of underwater foot valve device has been extended drainage.