Long-distance deep hole water injection process for coal bed of fully mechanized work surface

Abstract

The invention relates to a long-distance deep hole water injection process for a coal bed of a fully mechanized work surface, which can be used for improving the production efficiency and has a good dust removing effect. The long-distance deep hole water injection process comprises the following steps of: a, drilling a driller nest at a coal wall of a construction site of a drilling work surface in advance; b, drilling holes in the driller nest in an extension direction of a roadway; and c, blocking the drilled holes by a hole packer comprising a high-pressure glue expansion pipe, a safe valve and a fast joint, and completely inserting the hole packer into each drilled hole so as to communicate a work field water path with the hole packer, thereby realizing hole package because the high-pressure glue expansion pipe is expanded under the action of water pressure. Four holes are drilled in the step b, wherein the distance between each of two upper holes and a top plate of the roadway is 1 / 3 of height of the roadway, the distance between each of two upper holes and a side wall of the roadway is 1 / 3 of width of the roadway, the distance between each of two lower holes and a base plate of the roadway is 1 / 3 of the height of the roadway, and the distance between each of two lower holes and the side wall of the roadway is 1 / 3 of width of the roadway. According to the long-distance deep hole water injection process disclosed by the invention, the regular construction of a drilling head is not influenced, the production efficiency is improved to a certain extent, the generation of coal dust is effectively controlled from the source, the dust removing effect is good, and the safe production is ensured.

Description

technical field [0001] The invention relates to a dust removal process in the coal production process, in particular to a long-distance deep-hole water injection process for coal seams in fully mechanized excavation working faces. Background technique [0002] During the excavation process of the fully mechanized excavator, a large amount of dust is likely to be generated, which will cause great harm to the safety of production and the health of the operators. Boom water injection once drilling depth is only about 1.6m, and short boom drilling construction needs to be carried out in advance, and water injection has to be drilled every shift, which affects production and leads to low production efficiency. Contents of the invention [0003] The purpose of the invention is to provide a long-distance deep-hole water injection process for coal seams in fully mechanized excavation working faces, which can improve production efficiency and have good dust removal effect. [0004...

AI Technical Summary

Problems solved by technology

[0002] During the excavation process of the fully mechanized excavator, a large amount of dust is likely to be generated, which will cause great harm to the safety of production and the health of the operators. Boom water injection once drilling depth is only about 1.6m, and short boom drilling construction needs to be carried out in advance, and water injection must be drilled every shift, which affects production and leads to low production efficiency

Images