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A fire-proof filling material for isolation and fire protection in underground caving areas of coal mines

A technology of filling material and caving area, which is applied in the field of high-causing areas of underground roadways, isolated fire-proof filling materials in underground caving areas of coal mines, and isolation of fire-proof filling materials in roof-caving areas of stopes. Poor quality, high cost of filling materials, etc., to achieve the effect of high bonding strength, fast setting and light weight

Inactive Publication Date: 2016-12-07
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above situation, in order to solve the defects of the prior art, the object of the present invention is to provide a kind of isolation fireproof filling material for the caving area of ​​the coal mine, which can effectively solve the problem of low filling efficiency, high risk of personnel safety and poor filling sealing effect in the prior art. , after filling, heat release and accumulation will cause spontaneous combustion, resulting in safety accidents, and the problem of high cost of filling materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The invention provides a coal mine underground caving zone isolation fireproof filling material, which is composed of the following materials by weight percentage: 18-22% of hydrophobic expanded vitrified microbeads, 42.5% of ordinary Portland cement, 23-28% of water, 41% of water ~46%, JW-I naphthalene series retarding superplasticizer 0.14~0.18%, foaming agent aluminum powder 2.2~2.6%, quick-setting agent sulfoaluminate cement 3.2~3.6%, dispersible latex powder 0.35~ 0.55%, 0.20-0.27% of hydroxypropyl methylcellulose and 4.5-5.5% of red mud are mixed together to form.

Embodiment 2

[0015] The invention provides a coal mine underground caving zone isolation fireproof filling material, which is composed of the following materials in weight percentage: 20% of hydrophobic expanded vitrified microbeads, 42.5-25% of ordinary Portland cement, 43% of water, JW- I naphthalene series retarding superplasticizer 0.16%, foaming agent aluminum powder 2.3%, quick-setting agent sulfoaluminate cement 3.4%, dispersible latex powder 0.5%, hydroxypropyl methylcellulose 0.25% and red mud 5.39% mixed together to make up.

Embodiment 3

[0017] The invention provides a coal mine underground caving zone isolation fireproof filling material, which is composed of the following materials by weight percentage: 16% of hydrophobic expanded vitrified microbeads, 42.5% of ordinary Portland cement, 41% of water, JW- I Naphthalene series retarding superplasticizer 0.1%, foaming agent aluminum powder 3.0%, quick-setting agent sulfoaluminate cement 4.0%, dispersible latex powder 0.3%, hydroxypropyl methylcellulose 0.1% and red Mud 5.5% mixed together to make up.

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Abstract

The invention relates to a fire-proof filling material for isolation and fire protection of underground caving areas in coal mines. %, JW-I naphthalene retarding high-efficiency superplasticizer 0.1-0.2%, foaming agent aluminum powder 2.0-3.0%, quick-setting agent sulfoaluminate cement 3.0-4.0%, dispersible latex powder 0.3-0.6% , 0.10-0.30% of hydroxypropyl methylcellulose and 4-6% of red mud are uniformly mixed together, and the sum of the weight percentages of each component is 100%. The filling material of the present invention can better reduce the quality of the filling body, and the filling body has high temperature resistance and good plasticity, successfully realizes dry material transportation, avoids the phenomenon of pipe plugging, and avoids falling due to heavy weight At the same time, it can effectively solve the disasters such as gas accumulation and spontaneous combustion in the underground high-risk area, and can better solve the problem that the high-risk area is still in an unstable state, and a new and larger-scale roof collapse may appear.

Description

technical field [0001] The invention relates to an isolation and fireproof filling material for the high caving area of ​​underground roadways and stope roof caving areas, in particular to an isolation fireproof filling material for the underground caving area of ​​coal mines, which is used for filling and stopes of high caving areas of roadways in the process of coal seam roadway excavation in coal mines Roof-falling isolation fire-proof filling belongs to the isolation fire-proof filling technology of underground roadway high-falling area and stope roof-falling area. Background technique [0002] In the process of coal mining, in the coal seam, stope or areas affected by the structure, the stability of the roof of the roadway is poor, and the roof is easy to fall, forming the high-rise area of ​​the roadway and the roof area of ​​the stope. The long-term existence of the high-rise area will cause coal mine production. bring security risks. The existence of high-rise areas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/02C04B28/06
Inventor 王文李化敏李金旺叶云娜刘闯侯安琪
Owner HENAN POLYTECHNIC UNIV