CN101391879A - Spray coating material for preventing air leakage in roadway, use method thereof and special spray gun - Google Patents
Spray coating material for preventing air leakage in roadway, use method thereof and special spray gun Download PDFInfo
- Publication number
- CN101391879A CN101391879A CNA2008100796294A CN200810079629A CN101391879A CN 101391879 A CN101391879 A CN 101391879A CN A2008100796294 A CNA2008100796294 A CN A2008100796294A CN 200810079629 A CN200810079629 A CN 200810079629A CN 101391879 A CN101391879 A CN 101391879A
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- CN
- China
- Prior art keywords
- clay
- air leakage
- spray gun
- roadway
- cement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
- C04B2111/00172—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite by the wet process
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00275—Materials impermeable to vapours or gases
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a coating material used for preventing the air leakage of a laneway, an application method and a special spray gun thereof. The components of the coating material are clay, cement, sodium silicate, glass fiber and water which are mixed, stirred and made into clay cement slurry according to certain proportion and processes. The clay cement slurry is transported to an underground spraying area by a slurry pump through a grouting pipe, and sprayed to a coal roadway wall by the special spray gun to prevent the air leakage of the laneway. The clay cement slurry has strong suspension property, short initial concreting time, certain strength after solidification, rinse-resistance, not easy craze, excellent air partition performance, strong flame-retardant property, ideal effect of preventing the air leakage of the laneway, quick shotcreting process operations, safety and simplicity, is applicable to the spraying to the coal roadway walls of mines with serious hazards, and prevents the air leakage of the laneway so as to reduce the possibility of the occurrence of spontaneous combustion.
Description
Technical field
The present invention relates to the spraying wall flooring that a kind of Safety of Coal Mine Production is used, especially a kind of spray material that is used to prevent air leakage in roadway the invention still further relates to the using method of this spray material and the special-purpose spray gun in this method.
Background technology
Spontaneous combustion of coal is one of main natural disaster of China's mine, to be arranged in spontaneous combustion and to get angry the anti-fire extinguishing problem in tunnels such as needing the entry of the tunnel of long term service, gob-side entry driving and top-coal caving face gob-side entry retaining in the short coal seam of phase in order to solve, need be at the tunnel wall spraying every the wind material preventing air leakage in roadway, reduce the possibility that spontaneous combustion takes place for coal seam and worked-out section.
Spraying tunnel wall material commonly used has cement list slurries, concrete and urethane at present.Cement list slurries cause spraying effect undesirable because of the tack difference, and effect is relatively poor; Gunning concrete need transport a large amount of equipment and material, and the few mine difficulty of track is bigger for laying, and expense height, the efficient of spraying are low; Polyurethane material is inflammable, and spraying equipment requires high, inconvenient operation, and easily produce the crack after the urethane cures, influence is every the wind effect.
Summary of the invention
The present invention seeks at above-mentioned the deficiencies in the prior art part, the spray material that a kind of preparation technology is simple, easy to operate, prevent air leakage in roadway every satisfactory for result being used to of wind is provided.The present invention also provides the using method and the special-purpose spray gun of this spray material.
The present invention is used to prevent the spray material of air leakage in roadway, mainly is the clay cement grout that is mixed together by clay, cement, water glass, glass fibre and water.
As a kind of improvement, the clay cement grout volume is 1m
3The time, the consumption of various compositions is respectively: clay 0.4～0.65t, and cement 0.3～0.5t, water glass 4～6L, glass fibre 1～2kg, surplus is a water.
Improve as another kind, the plasticity index of clay is greater than 15, less than the granulometric composition weight percent of 0.005m greater than 60%; Cement is common 425
#Cement; The water glass degree Beaume is 40Be '; The length of glass fibre is 2～3cm.
The using method of spray material of the present invention is after each composition with spray material is prepared into clay cement grout by pulping system, to be delivered to spraying place, down-hole by slush pump through grouting pipeline, is sprayed onto the coal road wall by spray gun.
As a kind of improvement, the pulping system and the slush pump of preparation clay cement grout are arranged in ground.
The special-purpose spray gun that adopts in the using method of spray material of the present invention is " herring-bone " spray gun, is provided with two entrance ends, and an entrance end links to each other with grouting pipeline, and another entrance end links to each other with air line, the exit end ejection clay cement grout of spray gun.
The present invention is used to prevent the spray material of air leakage in roadway, is applicable to leaking out of tunnels such as the entry that prevent to be arranged in the tunnel that needs long term service in the short coal seam of spontaneous combustion period, gob-side entry driving and top-coal caving face gob-side entry retaining.Spray material is to mix stirring by pulping system after clay, cement, water glass and four kinds of compositions of glass fibre are added water according to certain proportioning, make clay cement grout, be delivered to spraying place, down-hole by slush pump through grouting pipeline, be sprayed onto the coal road wall by " herring-bone " spray gun and prevent air leakage in roadway.The clay cement grout tack is strong, and clay and cement granules are difficult for precipitation in pipeline, and its viscosity can satisfy the conveying requirement of slurries, can satisfy the requirement in the coal and rock surface attachment again; Presetting period is short, has certain intensity, anti-flushing after solidifying, and not easy to crack, every wind performance ideal, flame retardant resistance is strong, prevents that air leakage in roadway is satisfactory for result.Each composition of spray material is drawn materials conveniently, and cheap, preparation technology is simple, quick, the safety of gunite work operation peace, the mine serious in the spontaneous combustion disaster sprays the coal road wall, prevents that air leakage in roadway to reduce the possibility that spontaneous combustion takes place, has extensive applicability.
Description of drawings:
Fig. 1 is the using method synoptic diagram of spray material of the present invention.
Embodiment
The present invention is used to prevent the spray material of air leakage in roadway, it is the clay cement grout that mixes together according to certain proportioning by clay, cement, water glass, glass fibre and water, clay is the main raw of clay cement grout, its plasticity index is greater than 15, less than the granulometric composition weight percent of 0.005m greater than 60%; Cement adopts common 425
#Cement can increase substantially the calculus rate and the calculus intensity of slurries; Water glass can increase the suspension and the viscosity of slurries, shortens the presetting period of clay cement grout simultaneously; Glass fibre can prevent that the clay cement grout that is sprayed on the tunnel wall from solidifying the back cracking, plays the lacing wire effect.
Embodiment 1, get clay 0.55t, cement 0.37t, water glass 5L, glass fibre 1kg, surplus is a water, mixes by pulping system and stirs, being prepared into volume is 1m
3Clay cement grout.
Embodiment 2, get clay 0.5t, cement 0.4t, water glass 4L, glass fibre 1kg, surplus is a water, mixes by pulping system and stirs, being prepared into volume is 1m
3Clay cement grout.
Embodiment 4, get clay 0.4t, cement 0.3t, water glass 5L, glass fibre 1.5kg, surplus is a water, mixes by pulping system and stirs, being prepared into volume is 1m
3Clay cement grout.
As shown in Figure 1, pulping system 1 and slush pump 2 are arranged in ground, have improved the security of filling system, are not subjected to space constraint, and transportation of materials is convenient.The device of spraying clay cement grout is special-purpose spray gun 5, special-purpose spray gun 5 is " herring-bone " spray gun, the exit end ejection clay cement grout of spray gun 5, spray gun 5 is provided with two entrance ends, an entrance end links to each other with grouting pipeline 3 by valve 6, the clay cement grout that pulping system 1 prepares is sent into spray gun 5 by slush pump 2 through grouting pipeline 3, and another entrance end of spray gun 5 links to each other with air line 4 by valve 7, and pipeline is provided with reducing valve 8 and vacuum breaker 9.
Use the working process of spray material of the present invention: at first connect spray gun 5 before the whitewashing, Open valve 6, valve-off 7 injects clear water then and checks whether grouting pipeline 3 is unimpeded in grouting pipeline 3 on ground.Under the unimpeded situation of grouting pipeline 3, begin slurrying, after pulping system 1 is finished the making clay cement grout according to the proportioning of various compositions, clay cement grout is delivered to the slip casting place by slush pump 2 through grouting pipeline 3, and Open valve 7 beginnings are to tunnel wall spraying clay cement grout.In the process of spraying clay cement grout, according to the distance adjustment valve 7 control air quantity of spray gun 5 and tunnel wall, to improve the adhesion amount of clay cement grout at the tunnel wall.
Claims (6)
1. spray material that is used to prevent air leakage in roadway, it is characterized in that: described spray material is the clay cement grout that is mixed together by clay, cement, water glass, glass fibre and water.
2. the spray material that is used to prevent air leakage in roadway according to claim 1 is characterized in that: when the volume of described clay cement grout was 1m3, the consumption of various compositions was respectively: clay 0.4～0.65t, cement 0.3～0.5t, water glass 4～6L, glass fibre 1～2kg, surplus is a water.
3. the spray material that is used to prevent air leakage in roadway according to claim 1 and 2 is characterized in that: the plasticity index of described clay is greater than 15, less than the granulometric composition weight percent of 0.005mm greater than 60%; Described cement is common 425
#Cement; The degree Beaume of described water glass is 40Be '; The length of described glass fibre is 2～3cm.
4. one kind is used the described method that is used to prevent the spray material of air leakage in roadway of claim 1, it is characterized in that: after each composition of described spray material is prepared into clay cement grout by pulping system (1), be delivered to spraying place, down-hole by slush pump (2) through grouting pipeline (3), be sprayed onto the coal road wall by spray gun (5).
5. use according to claim 4 prevents the method for the spray material of air leakage in roadway, it is characterized in that: the pulping system (1) and the slush pump (2) that prepare described clay cement grout are arranged in ground.
6. realize that the described use of claim 4 prevents the special-purpose spray gun of method of the spray material of air leakage in roadway for one kind, it is characterized in that: described spray gun (5) is " herring-bone " spray gun, be provided with two entrance ends, one of them entrance end links to each other with grouting pipeline (3), another entrance end links to each other with air line (4), spray gun (5) exit end ejection clay cement grout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100796294A CN101391879A (en) | 2008-10-22 | 2008-10-22 | Spray coating material for preventing air leakage in roadway, use method thereof and special spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100796294A CN101391879A (en) | 2008-10-22 | 2008-10-22 | Spray coating material for preventing air leakage in roadway, use method thereof and special spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101391879A true CN101391879A (en) | 2009-03-25 |
Family
ID=40492419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100796294A Pending CN101391879A (en) | 2008-10-22 | 2008-10-22 | Spray coating material for preventing air leakage in roadway, use method thereof and special spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101391879A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863183A (en) * | 2012-09-03 | 2013-01-09 | 神华集团有限责任公司 | Plugging material for underworkings and use method of plugging material |
| CN103232198A (en) * | 2013-05-06 | 2013-08-07 | 中国矿业大学(北京) | Mine cohesiveness polymerizing-plugging type fire preventing and extinguishing material and preparation method of material |
| CN103693922A (en) * | 2013-09-16 | 2014-04-02 | 山东科技大学 | Mining spraying material formula and application method |
| CN109929483A (en) * | 2018-12-28 | 2019-06-25 | 京润矿安科技(北京)有限公司 | A kind of mine laneway of administering leaks out, prevents the low temperature composite colloid material of coal spontaneous combustion |
| 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 |
-
2008
- 2008-10-22 CN CNA2008100796294A patent/CN101391879A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863183A (en) * | 2012-09-03 | 2013-01-09 | 神华集团有限责任公司 | Plugging material for underworkings and use method of plugging material |
| CN103232198A (en) * | 2013-05-06 | 2013-08-07 | 中国矿业大学(北京) | Mine cohesiveness polymerizing-plugging type fire preventing and extinguishing material and preparation method of material |
| CN103693922A (en) * | 2013-09-16 | 2014-04-02 | 山东科技大学 | Mining spraying material formula and application method |
| CN109929483A (en) * | 2018-12-28 | 2019-06-25 | 京润矿安科技(北京)有限公司 | A kind of mine laneway of administering leaks out, prevents the low temperature composite colloid material of coal spontaneous combustion |
| 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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Open date: 20090325 |