我矿使用的是井塔式DMT2．25×4多绳摩擦式提升机，单晓带平衡锤提升方式。自投产使用以来，已进行了四次竖井延探工程，目前竖井已达864m，提升高度为816m。我矿井型是混合井，主井和副井都在45．5m的井筒内，所使用的多绳提升机投产使用已近30a，在维护更换钢丝绳方面摸索出 Mine mine is using well tower DMT2.25 × 4 multi-rope friction hoist, single dao with counterbalance lifting method. Since its commissioning, four shaft extension projects have been carried out. At present, the shaft has reached 864m and the lifting height is 816m. I mine is a mixed well, the main shaft and the auxiliary well are within 45.5m of the wellbore, the use of multi-rope hoist put into use nearly 30a, to explore the replacement of the maintenance of wire rope