Pressure filtration type hole sealing device for rapidly-hardened mine and using method thereof

Abstract

The invention belongs to the technical field of sealing and blocking devices, and discloses a pressure filtration type hole sealing device for rapidly-hardened mine and a using method thereof. The main technical characteristics are that the hole sealing device comprises a gas drainage pipe body, a front fibrous capsule bag, a rear fibrous capsule bag, a grouting pipe and an overflowing pipe are arranged on the outer wall of the gas drainage pipe body, the grouting pipe is provided with a front straight through pipe, an explosion valve, and a rear straight through pipe, the tail portion of the grouting pipe is connected with a mine-used mixing and grouting system composed of a portable pneumatic mixing barrel and a mine-used pneumatic grouting pump, and a mine-used hole-sealing special material is arranged in the portable pneumatic mixing barrel. According to the pressure filtration type hole sealing device for the rapidly-hardened mine, on the one hand, cracks on the periphery of a drill hole can be filled, gas leakage channels formed in the hole drilling process can be eliminated, and therefore gas leakage channels in the initial period are eliminated; one the other hand, the drill hole can be supported reliably, the stability the drill hole is ensured, so that a new gas leakage channel is no longer generated on the periphery of the drill hole, and therefore generating and developing of gas leakage channels in the later period are avoided; and the pressure filtration type hole sealing device is simple in method, suitable for various drill holes and good in hole sealing effect.

Description

technical field [0001] The invention belongs to the technical field of drilling and sealing holes for gas drainage in coal mines, and in particular relates to a filter-press type quick-hardening mine sealing device and a use method thereof. Background technique [0002] Coal seam gas outburst is one of the major factors that seriously affect the safety of coal mine production. Gas drainage is the fundamental measure and main way to control and utilize coal mine gas. Sealing quality of drilled orifices. Conventional gas drainage drilling sealing technology includes direct sealing with organic or inorganic materials. Direct plugging methods include artificial clay sealing, mechanical cement mortar sealing, and foaming polymer material sealing. The clay sealing method has a short sealing length, and the yellow mud becomes soft when it meets water, and the compactness is not good, and it is easy to leak air. Yellow mud and cement balls are used to artificially seal the holes,...

AI Technical Summary

Problems solved by technology

The sealing quality can be guaranteed for inclined drilling, but it is not suitable for near-horizontal or gently inclined coal seams

Cement cannot harden and consolidate in a short period of time, and it is easy to shrink after solidification and cause air leakage, so that the gas concentration decays faster after the hole is sealed

At present, the chemical polyurethane hole sealing technology mainly uses bare-handed hole sealing, and the length of the hole sealing is only 3-5m. For unskilled hole sealing workers, due to the quick response of polyurethane foaming, it is generally completed in 2 to 4 minutes, and it is often difficult to successfully seal holes in drainage drilling, resulting in waste holes

Foamed polymer material sealing has high cost of sealing material and high operation requirements

The above-mentioned gas drainage drilling hole sealing methods are still limited to the first sealing stage, and do not involve how to increase the concentration of gas drainage in the later stage, which reduces the utilization rate of gas drainage and causes pollution to the atmospheric environment

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