An upward stratified wall bag filling mining method

Abstract

The invention discloses an upward layered wall type bag filling mining method. A stope face is advanced in the side direction in a mining field, after ore removal is finished, an enclosure is formed along the overall length of a working face at the position a certain distance away from the stope face, a gob is separated into a reserved dead zone close to the stope face and an isolating dead zone far away from the stope face, bag filling is carried out in the isolating dead zone, roof contact is achieved, and after filling bodies are solidified, a next circulating mining process is carried out. During the next circulating mining process, the reserved dead zone serves as an explosion free face to be exploded, and stope filling is carried out according to the above steps. By means of the upward layered wall type bag filling mining method, the gob is treated with a bag filling method, ground pressure is controlled to create a working face for stope, and safe stope is achieved; operations are carried out in a small exposed space, and mining operation is continuous and high in efficiency; pillars are not needed, the resource recovery rate is high, and loss and dilution are small; the roof of the mining field can be effectively controlled, surface subsidence is avoided, water guiding fractures in the upper portion of the mining field are avoided, and groundwater resources and the ecological environment are protected.

Description

technical field [0001] The invention relates to a mine mining method, in particular to an upward layered wall bag filling mining method. Background technique [0002] For horizontal and gently inclined ore bodies with poor ore rock stability, the wall caving method is widely used, the layered caving method and upward layered filling mining method are used for gently inclined and steeply inclined mines, and the upward approach filling method is used for broken ore bodies mining law. The wall caving method and layered caving method are difficult to control, low in efficiency, large in wood consumption, and poor in safety conditions. However, the mining operation of the upward layered filling mining method is carried out under a relatively large exposed surface, and the safety conditions are poor. A large number of ore pillars need to be left, and the ore loss is relatively large. Low efficiency and high mining costs. The upward approach filling mining method requires that t...

AI Technical Summary

Problems solved by technology

Wall caving and layered caving are difficult to control, low in efficiency, high in wood consumption, and poor in safety conditions

However, the mining operation of the upward layered filling mining method is carried out under a relatively large exposed surface, and the safety conditions are poor. A large number of ore pillars need to be left, and the ore loss is relatively large. Low efficiency and high mining costs

The upward approach filling mining method needs to be mined only after the filling body of the adjacent approach reaches a certain strength, and it adopts the roadway excavation type mining method, the cost of rock drilling and blasting is high, the efficiency is low, and the ventilation condition is poor

The room-and-pillar method requires a large number of ore pillars, which are difficult to recover

Images