Water-rich roof upward mining face drainage system based on gob-side entry retaining

Abstract

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.

Description

technical field [0001] The invention relates to the application field of a mine drainage system, in particular to a water-rich roof upward mining face drainage system based on gob-side entry retention. Background technique [0002] The drainage system is one of the important components of the coal mine production system. For the mining of coal seams under the water-bearing zone pressure roof strata, detailed water disaster prevention and control measures need to be formulated and implemented. The drainage system layout of the water-rich roof upward mining face is affected by the geological occurrence of the coal seam. Generally, it is necessary to develop a special drainage roadway in the working face area, and at the same time, the drainage roadway is connected to the adjacent recovery roadway or a special drainage roadway is developed for drainage, which leads to a large amount of rock roadway development and high cost, and the adjacent recovery roadway is used as During t...

AI Technical Summary

Problems solved by technology

[0002] The drainage system is one of the important components of the coal mine production system. For the mining of coal seams under the water-bearing zone pressure roof strata, detailed water disaster prevention and control measures need to be formulated and implemented. The drainage system layout of the water-rich roof upward mining face is affected by the geological occurrence of the coal seam. Generally, it is necessary to develop a special drainage roadway in the working face area, and at the same time, the drainage roadway is connected to the adjacent recovery roadway or a special drainage roadway is developed for drainage, which leads to a large amount of rock roadway development and high cost, and the adjacent recovery roadway is used as During the temporary drainage roadway, because the roof stratum is rich in mine water, a large amount of mine water flows through the roadway during mining, and the surrounding rock of the roadway is weakened by water for a long time, and the mechanical properties of the surrounding rock are greatly reduced. Roadway maintenance is difficult

Images