Two-stage pouch under pressure enhanced sealing device and sealing method
A technology of sealing device and bag, which is applied in the directions of safety device, sealing/seal, earthwork drilling, etc. It can solve the problems of poor sealing effect of large-diameter drilling fissures and large gas emission, and achieve high-quality sealing The effect of hole space, increased strength, and simplified installation process and operation steps
Active Publication Date: 2022-05-17
TAIYUAN UNIV OF TECH
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Problems solved by technology
[0003] In order to solve the problems of poor sealing effect of large-diameter drilling fissures and excessive gas gushing out before sealing, the present invention provides a two-stage bladder pressure-enhanced sealing device and sealing method
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[0029]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] The structure of the two-stage pouch sealing device under pressure is as follows: figure 1 As shown, the device includes a foldable sealing baffle 1, a Down thread sealing tube 2, an upper side measure hole 3, a secondary sealing tube 4, a stop valve 5, a secondary external sealing bag 6, Blocking bag 7, one-way valve 8, exhaust pipe 9, grouting pipe 10, blasting valve 11 in the second stage. Wherein the primary bag sealing device is composed of a folda...
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The invention relates to the technical field of gas mining, in particular to a two-stage bag pressure-enhanced hole sealing device and a hole sealing method. Solve the problems of poor sealing effect of large-diameter drilling fissures and excessive gas emission before sealing, including the first-level bladder sealer installed at both ends of the hole, the first-level bladder sealer includes folding sealing Baffle plate and Down's thread sealing tube, the two ends of the Down's thread sealing tube are equipped with folding sealing baffles, the Down's thread sealing tube is equipped with a secondary bag sealer, and the secondary bag sealer Including the secondary sealing pipe, secondary external sealing bag, secondary internal sealing bag, exhaust pipe and grouting pipe, the secondary external sealing bag and the secondary internal sealing bag are respectively set in Tang The outer and inner ends of the threaded sealing pipe, the secondary sealing pipe and the grouting pipe pass through the secondary external sealing bag and the secondary internal sealing bag, and the secondary external sealing bag is provided with an exhaust There are stop valves on the outer ends of the exhaust pipe, the exhaust pipe and the grouting pipe.
Description
technical field [0001] The invention relates to the technical field of gas mining, in particular to a two-stage bag pressure-enhanced hole sealing device and a hole sealing method. Background technique [0002] In recent years, with the increase of mine mining depth year by year, the gas pressure and ground stress have increased, coupled with the poor natural conditions of coal seams and low air permeability in my country, the difficulty of gas drainage has further increased, which requires gas drainage technology and technological level It should also be improved accordingly. Most of the coal seams of high gas and outburst mines in my country have poor air permeability, and the effect of gas extraction by conventional drilling arrangement is not ideal. Only specific techniques can be used to destroy the original structure of the coal body to generate cracks to achieve the purpose of pressure relief and permeability enhancement. Thereby improving the gas extraction rate. At ...
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IPC IPC(8): E21B33/13E21F7/00E21B43/00
CPCE21B33/13E21F7/00E21B43/006Y02E10/20
Inventor 年军吴凯彬白鹏付洪波王建刚吕晓波邓春生
Owner TAIYUAN UNIV OF TECH