A collaborative filling method for gangue slurry pipeline in coal mining face

Abstract

The invention discloses a cooperative filling method for gangue slurry pipelines in a coal mining face. The method comprises: drilling adjacent grouting holes on the side of a coal pillar in an auxiliary transportation roadway at the same distance, and lowering the adjacent grouting pipes, Then install a tee joint at the adjacent grouting pipe on the coal pillar side of the auxiliary roadway to connect the low-level grouting pipe on the pipe hook on the coal pillar side of the auxiliary roadway; as the coal mining face advances, use the adjacent grouting pipe to The advanced adjacent grouting is carried out in the mined-out area of ​​the working face, and the lagging low-level grouting is carried out in the gob area of ​​the working face by using the low-level grouting pipe. The invention can efficiently, greenly and cost-effectively fill the gangue into the goaf without affecting the normal production of the coal mine.

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