The invention discloses a water-rich roof upward mining face drainage
system based on gob-side entry retaining. The
system is characterized in that a water-rich roof upward mining face transportation roadway adopts a gob-side entry retaining technology, that is, during working face stopping, certain technical means is adopted to reserve a working face transportation roadway as a working face drainage roadway, and the working face drainage roadway is a gob-side roadway. The drainage
system is composed of the gob-side roadway, a drainage hidden vertical shaft, a shared drainage connecting roadway, a drainage pumping
station, a special drainage roadway, an auxiliary transportation main roadway and an auxiliary shaft which are sequentially connected, and gushing water of a working face goaf forms the drainage system through the gob-side roadway, the drainage hidden vertical shaft, the shared drainage connecting roadway, the drainage pumping
station, the special drainage roadway, the auxiliary transportation main roadway and the auxiliary shaft and is pumped and drained to the ground. After the drainage system is formed, the mine drainage capacity is effectively improved, the
workload of drainage connecting roadway development is reduced, meanwhile, mine water is prevented from flowing through a mining roadway in a service period, and the long-term weakening influence, on surrounding rock of the mining roadway, from mine water is reduced.