Cylindrical hole sealing bag

Abstract

The invention discloses a cylindrical hole sealing bag, which includes a bag body, wherein the bag body is a sandwich bag body formed by an inner layer and an outer layer, and takes the shape of a cylinder; an openable separating device is arranged at the middle part of the bag body and divides the bag body into two mutually-separated parts, and two components of foam materials are filled into the interlayer between the two parts of bag body in a one-to-one correspondence manner; the cylindrical hole sealing bag is not required to be wound and bound for fixation and is very convenient to use, and moreover, the cylindrical bag body fully winds around a drainage pipe so as to meet the hole sealing requirement even when the hole sealing bag has difficulty in splitting; in addition, when the water inflow in a gas drill hole is high, and the hole sealing bag is required to be not split during the whole foaming process, the cylindrical hole seal bag can be used as a hole sealing bag not being split at all and can realize sealing the hole sealing section.

Description

technical field [0001] The invention relates to a plugging device for a mine gas drainage hole, in particular to a hole sealing bag. Background technique [0002] The currently widely used two-component polyurethane method to block the gas drainage hole is: sprinkle the two components of the two-component polyurethane, that is, isocyanate and combined polyether, on the textile or braided material in proportion, and stir slightly. Bind it on the drainage pipe and send it into the gas drainage hole; or first bind the above-mentioned fabric on the drainage pipe, and then pour the two components of polyurethane on the fabric and send it into the gas drainage hole. Although this method is a step forward compared with the use of cement and cement mixture, etc., this method of plugging has defects such as inaccurate proportioning, insufficient mixing, waste of materials, and poor plugging effect. [0003] The utility model patent with the patent number of 200620118135.9 discloses...

AI Technical Summary

Problems solved by technology

[0005] 1. The existing sealing bag needs to be wrapped and tied on the extraction pipe, which is very inconvenient to use;

[0006] 2. Since the existing sealing bag cannot be completely wrapped around the drainage pipe, if the sealing bag is not successfully broken in the gas drilling, the existing sealing bag structure cannot effectively complete the sealing of the sealing section. Will cause a lot of air leakage;

[0007] 3. When the amount of water gushing out of the gas borehole is large and the sealing bag is required not to be broken during the foaming process of the foaming material, the existing sealing bag structure cannot effectively complete the sealing of the sealing section

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