Polyurethane foaming bag blocked gas drainage hole

A technology of gas drainage and polyurethane, which is applied in the direction of gas discharge, sealing/isolation, safety devices, etc., to achieve the effect of not consuming energy

Active Publication Date: 2011-05-11
辽宁兰特科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the above-mentioned plugging technology for existing gas drainage holes, the present invention provides a method for plugging gas drainage holes. This method does not use energy, does not use mechanical equipment, does not cause waste, and can especially be used for deep sealing.

Method used

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  • Polyurethane foaming bag blocked gas drainage hole
  • Polyurethane foaming bag blocked gas drainage hole
  • Polyurethane foaming bag blocked gas drainage hole

Examples

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Embodiment Construction

[0014] exist figure 1 , erect the gas drainage pipe ① upwards, and use adhesive tape to vertically wrap the polyurethane foam bag on the gas drainage pipe ①. As shown in the wrapping tape ②, the tape can be wrapped and tied to the polyurethane foam bag ④ 2-4cm from the top. The binding should be relatively firm, not only to ensure that the foam bag does not fall off and not in place when entering the gas drainage hole, but also to control the self-explosive discharge direction.

[0015] exist figure 2 In the process, hold the upper and lower parts of the foam bag ④ with both hands, so that the middle seal ③ of the foam bag ④ is between the two hands. The middle seal ③ can be flushed open by holding both hands at the same time, so the two types of materials in the foam bag ④ are mixed together from the separated state. Then, the two hands are respectively loosened and squeezed for about 30 times, and the materials in the foam bag ④ are separated. The two materials have been...

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Abstract

The invention provides a polyurethane foaming bag blocked gas drainage hole, relating to a method for blocking the gas drainage hole by using a polyurethane foaming bag in coal mine underground operation with the advantages of energy conservation, safety, and capability of further blocking and improving the gas drainage effect. At present, the widely applied method for blocking the gas drainage hole by two-component polyurethane has the defects that: two kinds of materials cannot be sufficiently mixed and waste is caused, while further blocking cannot be performed, so the operation requirement cannot be fulfilled. To overcome the defects, the polyurethane foaming bag is used to block the gas drainage hole. The method comprises the following steps: the polyurethane foaming bag is tied on adrainage pipe vertically with a rubber tape; the isolating middle seal of the foaming bag is opened manually, and the two kinds of materials in the bag are sufficiently mixed by rubbing and grasping;the gas drainage pipe tied with the foaming bag is delivered into the gas drainage hole; and the foaming bag performs 'self destruction', and foams overflow to achieve the effect of blocking.

Description

Technical field [0001] The invention relates to a plugging method for using polyurethane foam bags to block gas drainage holes in coal mine underground operations, which is energy-saving, safe, and capable of deep sealing, thereby improving the gas drainage effect. technical background [0002] The currently widely used method of two-component polyurethane to block the gas drainage hole is to sprinkle the two materials of two-component polyurethane, namely isocyanate and combined polyether, on the textile or braided material in proportion, stir slightly, and bind Send it into the gas drainage hole on the drainage iron pipe or plastic pipe; or bind the above-mentioned fabric on the drainage pipe first, and then pour the two types of polyurethane materials on the fabric and send it into the drainage hole. Although this method is a step forward compared with the use of cement and cement mixture, etc., this method of plugging has the following defects: First, it is difficult to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F7/00E21B33/10
Inventor 国风
Owner 辽宁兰特科技发展有限公司
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