Gas extraction secondary high-pressure slip-casting hole-sealing apparatus and its hole-sealing method
A technology of gas drainage and hole sealing device, which is applied in the direction of gas discharge, safety device, sealing/isolation, etc., and can solve problems such as not being able to achieve the best sealing effect
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[0025] Such as figure 1 , figure 2 , Figure 7 , Figure 8 As shown, the secondary high-pressure grouting and sealing device for gas drainage includes a drainage pipe 1 and a bladder 4, as well as a tubular secondary slurry feeding device 6. The two sides of the secondary slurry feeding device 6 are butt-connected with drainage pipes 1. The pipe wall of the secondary slurry feeding device 6 is provided with an axial exhaust hole 13 connecting the extraction pipes 1 on both sides, and the inner pipe wall of the secondary slurry feeding device 6 is provided with a reinforced steel pipe 12, and the secondary slurry feeding Plugs 5 are respectively sleeved on the suction pipes 1 butted on both sides of the device 6, and a pocket 4 is provided between each plug 5 and the adjacent side of the secondary slurry feeding device 6, and the pocket 4 is provided with an exhaust device , The exhaust device is the puncture micro-hole 2 provided on the bag 4, and the bag 4 can be composed of a v...
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