针对我国矿山抢险排水中存在的问题 ,提出了一种充油式混流潜水电泵与大型矿用潜水电泵串联而成的新型接力排水系统 ,该接力排水系统可以将被淹没矿井内积水排至井底以上 0 .5 m处 ,接力泵平均无故障工作时间 (MTBF)由 60 h提高到 60 0 0 h,该接力排水系统的研制成功 ,解决了困扰我国煤矿抢险排水业 2 0余年的高故障率问题 Aimed at the problems existing in mine drainage and drainage in our country, a new type of relay drainage system with oil-filled mixed flow submersible electric pump and large mining submersible electric pump was put forward. The relay drainage system can transfer the water drains At 0 .5 m above the bottom of the well, the MTBF of the relay pump was increased from 60 h to 60 000 h. The relay drainage system was successfully developed to solve the problems that plagued the coal mine drainage and drainage industry in China more than 20 years High failure rate problem