Two-plugging two-injection type anti-sliding multi-type tire bag hole packer for gas extraction drilling

Abstract

The invention provides a two-plugging two-injection type anti-sliding multi-type tire bag hole packer for gas extraction drilling. The two-plugging two-injection type anti-sliding multi-type tire bag hole packer comprises an extraction pipe with the length direction arranged in the length direction of an inclined drill hole. A lower rubber tire bag and an upper rubber tire bag are arranged on the extraction pipe at intervals. A long grouting pipe is arranged between the lower rubber tire bag and the upper rubber tire bag in a penetrating mode. A plug located outside the upper side of the upper rubber tire bag is arranged at an upper end opening of the long grouting pipe. Grouting holes are formed in the positions, inside the lower rubber tire bag and the upper rubber tire bag, of the long grouting pipe. A short grouting pipe is arranged in the lower rubber tire bag in a penetrating mode. An upper end opening of the short grouting pipe is located in an annular cavity between the lower rubber tire bag and the upper rubber tire bag. According to the two-plugging two-injection type anti-sliding multi-type tire bag hole packer, after drilling construction is completed and the extraction pipe and the hole packer are inserted into the drill hole, hole sealing media are injected into the rubber tire bags through the grouting pipes, the hole packer tire bags support the drill hole and are embedded into the wall of the drill hole under extrusion of pressure media and the wall of the drill hole, the extraction pipe is not prone to sliding, and the hole sealing effect is further improved through the improvement of the sealing structures of the rubber tire bags.

Description

technical field [0001] The invention belongs to the technical field of coal mine gas drainage, and in particular relates to a two-blocking and two-injection type anti-slip multi-type tire capsule hole sealer for gas drainage drilling. 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. For exam...

AI Technical Summary

Problems solved by technology

[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. For example, insert a hole sealer for grouting immediately after a single hole is formed, and then clean the grouting pump immediately after grouting for each hole, which increases the workload of workers, reduces efficiency, and affects gas extraction. Efficiency and effectiveness and normal mining succession

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