CN104594950A - Coal mine underground flexible spray coating temporary sealing wall and building method thereof - Google Patents

Coal mine underground flexible spray coating temporary sealing wall and building method thereof Download PDF

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Publication number
CN104594950A
CN104594950A CN201510002249.0A CN201510002249A CN104594950A CN 104594950 A CN104594950 A CN 104594950A CN 201510002249 A CN201510002249 A CN 201510002249A CN 104594950 A CN104594950 A CN 104594950A
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CN
China
Prior art keywords
coal mine
underground coal
emulsion
flexible spray
flexible
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CN201510002249.0A
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Chinese (zh)
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CN104594950B (en
Inventor
吴怀国
韩德强
魏宏亮
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BEIJING RUINUOANKE NEW ENERGY TECHNOLOGY Co Ltd
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BEIJING RUINUOANKE NEW ENERGY TECHNOLOGY Co Ltd
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Priority to CN201510002249.0A priority Critical patent/CN104594950B/en
Publication of CN104594950A publication Critical patent/CN104594950A/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/103Dams, e.g. for ventilation

Abstract

The invention discloses a coal mine underground flexible spray coating temporary sealing wall and a building method thereof, and relates to a sealing wall structure achieving the sealing effect in the coal mine production process and a building method thereof. The invention aims at providing the coal mine underground flexible spray coating temporary sealing wall with the advantages of strong anti-cracking and wind-leaking-prevention capability, high safety, labor saving and material saving under the underground dynamic pressure change condition, and the building method of the coal mine underground flexible spray coating temporary sealing wall with the advantage that the building is fast and convenient. The coal mine underground flexible spray coating temporary sealing wall comprises a building framework, wherein the building framework comprises a plurality of cross beams and a plurality of wood point posts in left and right parallel arrangement, a wall surface spliced by a plurality of wall plates is arranged on the building framework, flexible waterproof paint is sprayed and coated on the wall surface, and the flexible waterproof paint is formed by mixing and curing two parts including polymer emulsion and inorganic powder materials.

Description

A kind of underground coal mine flexible spray temporary airtight wall and construction method thereof
Technical field
The present invention relates to a kind of body of wall and construction method thereof, particularly relating to a kind of fire dam structure for playing sealing function in coal production process and construction method thereof.
Background technology
Efficient colliery requisite technology in downhole production of Shi Shuan lane exploitation constructed by underground coal mine temporary airtight wall, ventilates in control, intercepts in the process of the pernicious gas such as goaf gas and carbon monoxide and all plays important effect.Underground coal mine temporary airtight wall is constructed and is usually constructed in the middle of the horizontal river of each coal column.Domestic still ununified method, does not have specified in more detail in safety regulations in coal mine yet at present.Traditional method has following several: (1) is stay 50cm space filling loess or other high molecular foam materials in the middle of the brick wall of 24cm at thickness; (2) carry out mortar spraying on brick wall surface, thickness is at about 10cm; (3) plank or hang up air duct fabric in wood point stud.The temporary airtight wall that these methods are constructed all exists easily to ftracture by down-hole dynamic pressure change and leaks out, leaks the not high defect of the safeties such as gas, while consume material and manpower, man-hour more, be not suitable with the development of modernization high yield and high efficiency mine.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of under down-hole dynamic pressure change, and crack resistence Anti-air-leakage ability is strong, safety good, the underground coal mine flexible spray temporary airtight wall that uses manpower and material resources sparingly and a kind of construction method constructing underground coal mine flexible spray temporary airtight wall fast and easily.
A kind of underground coal mine flexible spray of the present invention temporary airtight wall, comprise framing, the some wood point posts be arranged in parallel about described framing comprises and some crossbeams, described framing is provided with the metope be spliced into by polylith wallboard, described metope is coated with flexible waterproof coating, and described flexible waterproof coating is macromolecule emulsion and the mixing cured composition of inorganic powder two parts.
A kind of underground coal mine flexible spray of the present invention temporary airtight wall, comprises the macromolecule emulsion of 1-2 part and the inorganic powder of 1 part by mass fraction in wherein said flexible waterproof coating.
A kind of underground coal mine flexible spray of the present invention temporary airtight wall, wherein said macromolecule emulsion is one or more in acrylic emulsion, VAE emulsion, polychloroprene latex or benzene emulsion.
A kind of underground coal mine flexible spray of the present invention temporary airtight wall, wherein said inorganic powder comprise in portland cement and sulphate aluminium cement one or both, also comprise in silica flour, slag powders, rubber powder, cellulose ether, polymer fiber or quartz powder one or more.
A kind of underground coal mine flexible spray of the present invention temporary airtight wall, wherein said wallboard is plank or lumber core.
A kind of underground coal mine flexible spray of the present invention temporary airtight wall, the two ends, left and right of wherein said crossbeam reach outside framing, described in reach part outside framing for insert both sides, tunnel coal body in fix body of wall.
The construction method of a kind of underground coal mine flexible spray of the present invention temporary airtight wall, comprises the following steps:
A) in tunnel the left and right sides coal body between left and right parallel be provided with multiple wood point post;
B) install crossbeam at the Along ent place of wood point post, described crossbeam is connected with wood point post successively;
C) wood point post and crossbeam composition framing on the metope be spliced into by polylith wallboard is installed;
D) use spray pump at metope surface spraying layer flexible water-repellent paint.
The construction method of a kind of underground coal mine flexible spray of the present invention temporary airtight wall, wherein said flexible waterproof coating is macromolecule emulsion and the mixing cured composition of inorganic powder two parts, wherein comprises the macromolecule emulsion of 1-2 part and the inorganic powder of 1 part by mass fraction.
The construction method of a kind of underground coal mine flexible spray of the present invention temporary airtight wall, wherein said macromolecule emulsion is one or more in acrylic emulsion, VAE emulsion, polychloroprene latex or benzene emulsion.
The construction method of a kind of underground coal mine flexible spray of the present invention temporary airtight wall, wherein said inorganic powder comprise in portland cement and sulphate aluminium cement one or both, also comprise in silica flour, slag powders, rubber powder, cellulose ether, polymer fiber or quartz powder one or more.
A kind of underground coal mine of the present invention flexible spray temporary airtight wall and construction method difference from prior art thereof are that a kind of underground coal mine flexible spray of the present invention temporary airtight wall comprises the framing formed by wood point post and crossbeam, framing is provided with the metope that wallboard is formed, fire dam structure of the present invention is simple, the consumption of constructional materials can be reduced, be coated with by macromolecule emulsion and the mixing cured flexible waterproof coating formed of inorganic powder two parts on metope simultaneously, existing stronger adhesive strength after this kind of flexible waterproof coating solidification, hot strength, there is again excellent extension property, its elongation per unit length can arrive 30% ~ 200%, effectively can solve secondary that ore deposit pressure change causes metope ftracture to cause to leak out and the problem of gas leakage, improve the safety of workman's underground work.The construction method of a kind of underground coal mine of the present invention flexible spray temporary airtight wall is easy and simple to handle, can shorten cycle that fire dam constructs, use manpower and material resources sparingly, and reduce fire dam later stage cracking maintenance times.
Below in conjunction with accompanying drawing, a kind of underground coal mine flexible spray temporary airtight wall work of the present invention and construction method thereof are further illustrated.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of underground coal mine flexible spray of the present invention temporary airtight wall.
Detailed description of the invention
As shown in Figure 1, embodiment 1, a kind of underground coal mine flexible spray of the present invention temporary airtight wall comprises framing, and framing comprises wood point post 5, and the present embodiment selects four wood point posts 5, and the wide and thick 10cm that is of wood point post 5, length is slightly larger than head-room.Four wood point posts 5 are evenly arranged between the top board 1 in tunnel and base plate 6, and wood point post 5 top is arranged in the groove of top board 1, and clamps with chock 7.Wood point post 5 is provided with crossbeam 4, and the present embodiment selects two crossbeams 4, wide and thick 10cm and 4cm that be respectively of crossbeam 4, and length is slightly larger than span length.Crossbeam 4 installs two trisection point places of wood point post 5 respectively, and crossbeam 4 is connected with four wood point posts 5 successively.The two ends, left and right of crossbeam 4 reach the outside of framing, and among the coal body 3 inserting the left and right sides, tunnel.Framing is provided with the metope be spliced into by polylith wallboard 2, wallboard 2 selects plank or lumber core.Metope sprays multilayer and have flexible waterproof coating, spray a thickness and be generally 1 ~ 2mm, last coating thickness is 3 ~ 6mm, and surface is substantially smooth, even.Flexible waterproof coating is macromolecule emulsion and the mixing cured composition of inorganic powder two parts.Wherein macromolecule emulsion is one or more in acrylic emulsion, VAE emulsion, polychloroprene latex or benzene emulsion.Inorganic powder comprise in portland cement and sulphate aluminium cement one or both, also comprise in silica flour, slag powders, rubber powder, cellulose ether, polymer fiber or quartz powder one or more.Comprise the macromolecule emulsion of 1-2 part and the inorganic powder of 1 part by mass fraction in flexible waterproof coating, the mixing situation of different proportion can make final flexible waterproof coating have different elongation per unit length.Select 1 part of macromolecule emulsion in the present embodiment and 1 part of inorganic powder is mixing cured forms, wherein macromolecule emulsion selects acrylic emulsion, and portland cement selected by powder, and after mixing, its elongation per unit length is 30%.
The construction method of a kind of underground coal mine flexible spray of the present invention temporary airtight wall comprises the following steps:
A) in tunnel the left and right sides coal body 3 between left and right parallel be provided with multiple wood point post 5;
B) install crossbeam 4 at the Along ent place of wood point post 5, crossbeam 4 is connected with wood point post 5 successively, forms framing;
C) metope be spliced into by polylith wallboard 2 is installed on framing;
D) use spray pump at metope surface spraying layer flexible water-repellent paint.
Table 1 is embodiment 2-12, and wherein with embodiment 3 difference from Example 1, embodiment 2 is that macromolecule emulsion is different with the composition of inorganic powder; Embodiment 4-6 and embodiment 1-3 difference are that the quality proportion between macromolecule emulsion and inorganic powder is different, and macromolecule emulsion is different with the constituent of inorganic powder; Embodiment 7-12 and embodiment 1-6 difference are that the quality proportion between macromolecule emulsion and inorganic powder is different, and macromolecule emulsion is different with the constituent of inorganic powder, and in inorganic powder, the content of each composition is different.
Table 1
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.

Claims (10)

1. a underground coal mine flexible spray temporary airtight wall, it is characterized in that: comprise framing, the some wood point posts be arranged in parallel about described framing comprises and some crossbeams, described framing is provided with the metope be spliced into by polylith wallboard, described metope is coated with flexible waterproof coating, and described flexible waterproof coating is macromolecule emulsion and the mixing cured composition of inorganic powder two parts.
2. a kind of underground coal mine flexible spray temporary airtight wall according to claim 1, is characterized in that: comprise the macromolecule emulsion of 1-2 part and the inorganic powder of 1 part by mass fraction in described flexible waterproof coating.
3. a kind of underground coal mine flexible spray temporary airtight wall according to claim 1, is characterized in that: described macromolecule emulsion is one or more in acrylic emulsion, VAE emulsion, polychloroprene latex or benzene emulsion.
4. a kind of underground coal mine flexible spray temporary airtight wall according to claim 1, it is characterized in that: described inorganic powder comprise in portland cement and sulphate aluminium cement one or both, also comprise in silica flour, slag powders, rubber powder, cellulose ether, polymer fiber or quartz powder one or more.
5. a kind of underground coal mine flexible spray temporary airtight wall according to claim 1, is characterized in that: described wallboard is plank or lumber core.
6. a kind of underground coal mine flexible spray temporary airtight wall according to claim 1, it is characterized in that: the two ends, left and right of described crossbeam reach outside framing, described in reach part outside framing for insert both sides, tunnel coal body in fix body of wall.
7. a construction method for underground coal mine flexible spray temporary airtight wall, is characterized in that: comprise the following steps:
A) in tunnel the left and right sides coal body between left and right parallel be provided with multiple wood point post;
B) install crossbeam at the Along ent place of wood point post, described crossbeam is connected with wood point post successively;
C) wood point post and crossbeam composition framing on the metope be spliced into by polylith wallboard is installed;
D) use spray pump at metope surface spraying layer flexible water-repellent paint.
8. the construction method of a kind of underground coal mine flexible spray temporary airtight wall according to claim 7, it is characterized in that: described flexible waterproof coating is macromolecule emulsion and the mixing cured composition of inorganic powder two parts, wherein comprises the macromolecule emulsion of 1-2 part and the inorganic powder of 1 part by mass fraction.
9. a kind of underground coal mine flexible spray temporary airtight wall according to claim 7, is characterized in that: described macromolecule emulsion is one or more in acrylic emulsion, VAE emulsion, polychloroprene latex or benzene emulsion.
10. a kind of underground coal mine flexible spray temporary airtight wall according to claim 7, it is characterized in that: described inorganic powder comprise in portland cement and sulphate aluminium cement one or both, also comprise in silica flour, slag powders, rubber powder, cellulose ether, polymer fiber or quartz powder one or more.
CN201510002249.0A 2015-01-04 2015-01-04 A kind of underground coal mine flexible spray temporary airtight wall and its construction method Active CN104594950B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106673562A (en) * 2017-02-16 2017-05-17 西安科技大学 Inhibited mortar emulsion for fire prevention and extinguishment in coal mine and spraying method thereof
CN110410132A (en) * 2019-08-06 2019-11-05 陕西煤业化工技术研究院有限责任公司 One kind, which is stayed, sets thin coal pillar leakproof wind process

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CN102477257A (en) * 2010-11-22 2012-05-30 大连创达技术交易市场有限公司 Novel ageing-resistant waterproof coating
CN202578779U (en) * 2012-03-16 2012-12-05 惠兴田 Large-framework concrete gob-side separation wall
CN102777208A (en) * 2012-08-02 2012-11-14 兖州煤业股份有限公司 Method for constructing mining impact-resisting sealed wall
CN102888165A (en) * 2012-10-26 2013-01-23 苏州市姑苏新型建材有限公司 Quick-setting polymer latex waterproof coating
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106673562A (en) * 2017-02-16 2017-05-17 西安科技大学 Inhibited mortar emulsion for fire prevention and extinguishment in coal mine and spraying method thereof
CN110410132A (en) * 2019-08-06 2019-11-05 陕西煤业化工技术研究院有限责任公司 One kind, which is stayed, sets thin coal pillar leakproof wind process

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