A plugging method for water inrush borehole wall filter flow pressure relief hole inner casing and solid pipe

Abstract

The invention provides a device for filtering flow and releasing pressure on a water inrush borehole and sleeving tube in the hole for grouting, fixing tube and blocking and a tube-fixing and blocking method thereof. The device comprises an outer tube, wherein the outer tube is provided with a dislocation position; a hole wall filtering and pressure-releasing mechanism is arranged at the pipe orifice of the outer tube; an inner tube is inserted into the outer tube through a charging hole of the hole wall filtering and pressure-releasing mechanism, so that the dislocation position is positioned between the two ends of the inner tube; a charging tube is fixed to the charging hole of the hole wall filtering and pressure-releasing mechanism; an orifice gate valve is fixed between the charging tube and the hole wall filtering and pressure-releasing mechanism. Compared with the prior art, the device has the advantages that the small-aperture inner tube is arranged in the outer tube towards a position below the tube-sleeving dislocation position, slurry is injected into the hole through the inner tube, the slurry permeates through a breaking position of the casing, blocks a water outlet gap channel on a roadway floor, flows into a gap between the inner tube and the outer tube to fix the tubes by filling, and blocks a water-containing layer to realize water blocking on the roadway floor and filling between the inner tube and the outer tube, so that the aims of fixing the inner tube and the outer tube, blocking the borehole and treating the effluent from the roadway floor are fulfilled.

Description

technical field [0001] The invention relates to the technical field of borehole grouting and plugging, in particular to a method for plugging a water-inrush borehole with a filter flow on the wall of a pressure relief hole and a solid pipe in a casing. Background technique [0002] In the underground production of mines, water inrush problems of high-pressure water drilling are often encountered, such as poorly sealed exploration holes, freezing holes, inspection holes, etc. device) exploration holes, inspection holes, etc. If this type of drilling is not blocked, on the one hand, it will affect the underground working environment and increase the burden of mine drainage; on the other hand, it will bring a large amount of water in a short period of time, posing a threat to mine safety production. [0003] Underground water exploration and drainage drilling is a common measure for water disaster control in mines with complex hydrogeological conditions, but it often occurs du...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the defect of difficult plugging of water-inrush boreholes in the prior art, and to provide a plugging device for casing grouting and solid-pipe sealing in the wall of the water-inrush borehole for pressure relief holes and its solid-pipe sealing device. blocking method to solve the above problems

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