Tire bag type anti-slip hole packer for bottom-pumping roadway gas extraction drilling

Abstract

The invention provides a tire bag type anti-slip hole packer for bottom-pumping roadway gas extraction drilling. The tire bag type anti-slip hole packer comprises an extraction pipe, a liquid injection pipe, a grouting pipe, an upper rubber tire bag and a lower rubber tire bag, wherein the extraction pipe, the liquid injection pipe and the grouting pipe are arranged in parallel, the liquid injection pipe penetrates through the lower rubber tire bag and the upper rubber tire bag, a plug is arranged at an upper port of the liquid injection pipe, liquid outlet holes are formed in the liquid injection pipe and located in the upper rubber tire bag and the lower rubber tire bag, a through hole is formed in the extraction pipe and located between the upper rubber tire bag and the lower rubber tire bag, the grouting pipe is arranged in the extraction pipe and is in contact with the inner wall of the extraction pipe, and the upper end of the grouting pipe is bent and penetrates through the through hole to extend out of the extraction pipe. According to the hole packing method, the complicated process that one hole is punched, one hole is sealed through grouting and a grouting pump is cleaned once in conventional hole packing is avoided, the steps that liquid is injected firstly for temporary hole packing, then concentrated stirring and concentrated grouting are performed, and the grouting pump is cleaned in a concentrated mode after grouting is completed are adopted, so that time is saved, the labor intensity of workers is reduced, the hole packing cost is reduced, and the labor workload of the workers is reduced.

Description

technical field

[0001] The invention belongs to the technical field of gas drainage in coal mines, and in particular relates to a bladder-type anti-slip hole sealing device used for drilling holes in gas drainage in bottom pumping roadways. Background technique

[0002] After the construction of gas drainage drilling in the bottom drainage roadway, in order to ensure the smooth progress of gas drainage, the intubation and sealing of the holes must be carried out immediately. The hole is easy to collapse and the hole sealer cannot be inserted smoothly, and the drilled hole is easy to be scrapped. However, the hole sealers used in the bottom pumping tunnels of coal mines are generally longer in length. If a single hole is drilled and inserted immediately after the hole is formed, when the hole sealers are inserted into the upward holes in the bottom pumping tunnel, due to the larger self-weight of the hole sealers If no measures are taken, it is easy to slip off by itself. Fo...

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