Waste rock slurry pipeline coordinated method for coal mining working face

Abstract

The invention discloses a waste rock slurry pipeline coordinated method for a coal mining working face. The method comprises the steps of drilling adjacent grouting holes in a coal pillar side of an auxiliary transportation lane every other equal distance, and placing adjacent grouting pipes; then, mounting a three-way joint at an adjacent grouting pipe on the coal pillar side of auxiliary transportation lane, and connecting a low-position grouting pipe on a pipeline hanging hook on the coal pillar side of the auxiliary transportation lane; along with the advance of the coal mining working face, performing advanced adjacent grouting on an adjacent goaf by utilizing an adjacent grouting pipe; and performing lagging low-position grouting on the goaf of the working surface by utilizing the low-position grouting pipe. According to the waste rock slurry pipeline coordinated method for the coal mining working face, waste rock can be filled to the goaf efficiently and environment-friendly with low cost without affecting normal production of coal mines.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a collaborative filling method for gangue slurry pipelines in coal mining working faces, which can be used to process gangue in goafs of traditional coal mining working faces, and can also be used in goafs of fully mechanized top coal caving working faces. Deal with gangue. Background technique [0002] At present, the mainstream coal gangue treatment methods adopted by my country's coal mines include comprehensive mechanized solid filling mining, paste filling mining, continuous mining and continuous filling and other methods. The comprehensive mechanized solid filling mining method needs to add a gangue underground transportation system and filling coal mining support. The project investment is large and the preparation time for mine construction is long; paste filling mining is a method of crushing gangue and processing it with fly ash, cement and other additives to ...

AI Technical Summary

Problems solved by technology

[0002] At present, the mainstream coal gangue treatment methods adopted by my country's coal mines include comprehensive mechanized solid filling mining, paste filling mining, continuous mining and continuous filling and other methods. The comprehensive mechanized solid filling mining method needs to add a gangue underground transportation system and filling coal mining support. The project investment is large and the preparation time for mine construction is long; paste filling mining is a method of crushing gangue and processing it with fly ash, cement and other additives to form a paste fluid and inject it into the gob. Complicated; continuous mining and continuous filling is to throw gangue directly into the underground roadway, and its gangue treatment capacity is low, which cannot meet the needs of mines with large gangue output.

At the same time, the above-mentioned coal gangue treatment methods are only applicable to the traditional coal mining face, and cannot be applied to the fully mechanized coal mining face

Images