Combined sealing device for energy absorption and explosion discharge of coal spontaneous combustion fire zone and construction technology of combined sealing device

A construction technology, coal spontaneous combustion technology, applied in mining installations, mining equipment, earthwork drilling, etc., to achieve the effects of high impact resistance, short construction time and reasonable design

Inactive Publication Date: 2019-08-06
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an energy-absorbing explosion-relief combined airtight device and its construction technology in coal spontaneous combustion fire zone, which can effectively solve the problems in the above-mentioned background

Method used

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  • Combined sealing device for energy absorption and explosion discharge of coal spontaneous combustion fire zone and construction technology of combined sealing device
  • Combined sealing device for energy absorption and explosion discharge of coal spontaneous combustion fire zone and construction technology of combined sealing device
  • Combined sealing device for energy absorption and explosion discharge of coal spontaneous combustion fire zone and construction technology of combined sealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A combined airtight device for energy absorption and explosion relief in coal spontaneous combustion fire zone, specifically as Figure 1-3 As shown, colloidal explosion-proof bag 2 and airbag bag 3 are made of a blend of metallocene polyethylene and general-purpose polyethylene in a mass ratio of 30:70;

[0035] The colloidal explosion-proof bag 2 is a hollow soft structure with an arched top. The thickness of the colloidal explosion-proof bag 2 is 1m. The mass ratio is the first interlayer and the second interlayer made of the blend of 30:70, and the first interlayer and the second interlayer separate the inside of the colloidal explosion-proof bag 2 from top to bottom into an arched cavity 21, The first cavity 22 and the second cavity 23;

[0036] There are grouting holes 6 on the top of the same side of the arched cavity 21, the first cavity 22 and the second cavity 23. The grouting holes 6 are connected with a grouting pipe, and the grouting pipe is connected with...

Embodiment 2

[0052] A combined airtight device for energy absorption and explosion relief in coal spontaneous combustion fire zone, specifically as Figure 1-2 As shown, colloidal explosion-proof bag 2 and airbag bag 3 are made of a blend of metallocene polyethylene and general-purpose polyethylene in a mass ratio of 40:60;

[0053] The colloidal explosion-proof bag 2 is a hollow soft structure with an arched top. The thickness of the colloidal explosion-proof bag 2 is 3m. The mass ratio is the first interlayer and the second interlayer made of the blend of 40:60, and the first interlayer and the second interlayer separate the inside of the colloid explosion-proof bag 2 from top to bottom into an arched cavity 21, the second interlayer A cavity 22 and a second cavity 23;

[0054] There are grouting holes 6 on the top of the same side of the arched cavity 21, the first cavity 22 and the second cavity 23. The grouting holes 6 are connected with a grouting pipe, and the grouting pipe is conn...

Embodiment 3

[0069] A combined airtight device for energy absorption and explosion relief in coal spontaneous combustion fire zone, specifically as Figure 1-2 As shown, colloidal explosion-proof bag 2 and airbag bag 3 are made of a blend of metallocene polyethylene and general-purpose polyethylene in a mass ratio of 50:50;

[0070] The colloidal explosion-proof bag 2 is a hollow soft structure with an arched top. The thickness of the colloidal explosion-proof bag 2 is 5m. The mass ratio is the first interlayer and the second interlayer made of the blend of 50:50, and the first interlayer and the second interlayer separate the inside of the colloid explosion-proof bag 2 from top to bottom into an arched cavity 21, the second interlayer A cavity 22 and a second cavity 23;

[0071]There are grouting holes 6 on the top of the same side of the arch cavity 21, the first cavity 22 and the second cavity 23, and the grouting holes 6 are connected with grouting pipes; the grouting pipes are connec...

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Abstract

The invention relates to the technical field of coal spontaneous combustion fire zone sealing, in particular to a combined sealing device for energy absorption and explosion discharge of a coal spontaneous combustion fire zone. The combined sealing device includes a colloidal explosion-proof bag and an air bag, the colloidal explosion-proof bag is of a hollow structure, and a first interlayer anda second interlayer are arranged in the hollow structure to separate the colloidal explosion-proof bag into an arch-shaped cavity, a first cavity and a second cavity; a grouting hole is formed in thetop end of the same side of each layer, the grouting holes are connected with a colloid foam filling system driven by compressed air, air holes are formed in one sides of the grouting holes, and a cylindrical through groove is formed in the middle of the lower end of the second cavity; and the air bag is embedded in the cylindrical through groove, and the air bag is provided with a gas injection hole. The invention further provides a construction technology for the combined sealing device for energy absorption and explosion discharge of the coal spontaneous combustion fire zone. According to the combined sealing device for energy absorption and explosion discharge of the coal spontaneous combustion fire zone, the structure is simple and light, the construction technology is simple, the construction time is short, and the impact strength is high.

Description

technical field [0001] The invention relates to the technical field of airtight coal spontaneous combustion fire zone, in particular to an energy-absorbing and explosion-relief combined airtight device for coal spontaneous combustion fire zone and its construction technology. Background technique [0002] Most coal mines in my country are characterized by high gas outburst, coal dust explosion and spontaneous combustion hazard. With the continuous expansion of the scale of underground mining in coal mines and the extension of production levels, the amount of gas emitted from mines is gradually increasing, and coal spontaneous combustion and gas fires and explosions caused by internal or external factors occur from time to time; Toxic and harmful gases have a great impact on the safety of coal mine production and the life safety of construction workers. The fire-preventing airtight device is a key measure to prevent and extinguish fires in goafs in coal mines or mining coal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F17/107C08J9/30C08F220/56C08F222/38C08F226/06C08L33/26
CPCC08F220/56C08J9/30C08J2333/26E21F17/107C08F222/385C08F226/06
Inventor 罗振敏王秋莎王伟峰王亚超邓军文虎刘博程方明
Owner XIAN UNIV OF SCI & TECH
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