CN109384447A - Face in a kind of open coal mine hole and builds roadbase powder curing agent and its application method - Google Patents
Face in a kind of open coal mine hole and builds roadbase powder curing agent and its application method Download PDFInfo
- Publication number
- CN109384447A CN109384447A CN201811487367.5A CN201811487367A CN109384447A CN 109384447 A CN109384447 A CN 109384447A CN 201811487367 A CN201811487367 A CN 201811487367A CN 109384447 A CN109384447 A CN 109384447A
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- Prior art keywords
- curing agent
- roadbase
- powder
- coal mine
- agent
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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
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- 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)
- Road Paving Structures (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses facing in a kind of open coal mine hole and building roadbase powder curing agent and its application method, for solidifying the deep coal dust in open coal mine hole, builds the upper layer prefabricated board of road to face rigidity support is provided.The curing agent is made of the pulvis of 70%-90% and liquor two parts of 10%-30%, and pulvis is made of 15%-30 clot promoting material, 20%-60% slag micropowder, 10%-25% pozzolanic materials, 1%-2% surfactant；Liquor is made of 90%-95% sodium silicate exciting agent, 5%-10% polymer emulsion.The less volume of this curing agent can sufficiently solidify coal dust soft in hole, reach the foundation base intension of code requirement, guarantee upper layer prefabricated board uniform force rationally, normal use.And curing agent of the present invention is able to maintain the original attribute of coal dust, the exploitation again for not influencing to solidify coal dust uses, and solidification is rapid, convenient and quick construction.
Description
Technical field
The invention belongs to field of road, are related to a kind of base's curing materials, and in particular in a kind of open coal mine hole
Face and builds roadbase coal body curing agent and preparation method.
Background technique
Coal plays huge effect as one of China's main energy sources, to Chinese national economy, however in coal mine
A large amount of dust is inevitably generated in exploitation, transportational process, particularly with the exploitation of open coal mine, due to its open work
Industry and earth's surface it is exposed constantly by weathering Erosion, dust pollution phenomenon is serious, especially for road in hole, the accumulation of road table
A large amount of dust seriously pollute environment, influence field operation normal development.
Road material is mainly coal in hole, and road surface and roadbed are softer, under the rolling of all kinds of coalers and equipment, hole
Middle road has gathered a large amount of fine solid particles, biggish open coal mines some for northwest China portion, road dust thickness in hole
Even more than 200mm.Since road accumulated powder particle is tiny in hole, road surface is softer, during vehicle transport, driving is caused to run
It winnows with a dustpan, results even in vehicle and fall into and cause accident in bisque, cause casualties.Meanwhile when vehicle passes through or strong wind passes through,
A large amount of fine solid particle raises with the wind with vehicle, generates serious fugitive dust harm, live visibility is caused to substantially reduce, part of
Road visibility is even less than five meters in glory-hole hole.The serious dust pollution situation of road in this outdoor pit, sternly
Important place influences the normal construction speed in scene, while also seriously threatening the physically and mentally healthy and acceleration equipment of field personnel
Abrasion.And road is located at production zone in cheating, and provisional road is only used as, with the propulsion of mining progress, service condition
It constantly changes, some sections are even used only a couple of days and production zone is just used as to continue to exploit.
For the features such as road is provisional, accumulated powder is thicker in outdoor pit, this seminar, which has invented, a kind of safe and efficient to be had
The prefabricated board of effect is laid with the road coal mine Zhong Linjian path method, and short construction period is simultaneously detachably recycled, can effectively solve in hole
The serious dust harzard of road.The invention includes that prefabricated board production and bottom surface oiling, dust layer cleaning stirring, dust slurry are consolidated
5 procedures such as change, prefabricated board broken-up laying and plate stitch slip casting.Wherein dust slurry curing process is particularly important, because if taking
It is directly laid with road deck, does not have good bearing capacity since coal seam is softer, traffic load is excessive, plate face discontinuity,
Be easy to the defects of generating crack, faulting, eventually lead to prefabricated board fracture, cause significant wastage, increase construction cost with
Period.
The common base of road includes lime stabilized soil base, soil cement base, lime-fly-ash stabilization soil at present
Several classes such as base, graded broken stone base and graded gravel base, need to mix in these base layer constructions a large amount of cement, lime,
The materials such as sandstone, original soil body proportion is less in base material.If outdoor to solidify using traditional base treatment mode
The poly- a large amount of coal dusts of link table lamination in coal mine need to mix a large amount of outer material, and this aspect causes cost cost prohibitive, separately
On the one hand a large amount of outer material is mixed into the use of exploitation again that can seriously affect consolidation zone coal dust, and traditional base treatment measure is bright
It is aobvious be not suitable for facing in open coal mine hole build road, therefore there is an urgent need to it is a kind of it is economical, efficiently, will not be to the secondary recovery of coal dust
The base's powder curing materials having an impact.
Summary of the invention
A series of physical chemical action can occur with subtle powder for curing agent of the present invention, and more traditional cement slurry, three close
The material solidifications coal dust effect such as soil, dirt is more significant, can sufficiently solidify loose coal dust under less volume, reaches full
The intensity that sufficient roadbase requires, and do not change the original attribute of coal dust, solidification basic unit, will not be to stabilization zone based on coal dust
The use of exploitation again of domain coal dust has an impact, at low cost, can bring higher economy and zoology benifit.
In order to achieve the above object, technical solution of the present invention includes: and faces to build roadbase powder in a kind of open coal mine hole
Body curing agent, it is characterised in that: the curing agent (based on mass fraction) is by the pulvis of 70%-90% and liquor two of 10%-30%
It is grouped as；
Each component and its mass fraction in the pulvis: 15%-30% clot promoting material, 20%-60% slag micropowder, the volcano 10%-25%
Grey material and 1%-2% surfactant；
Each component and its mass fraction in the liquor: 90%-95% sodium silicate exciting agent and 5%-10% polymer emulsion.
A kind of prioritization scheme of roadbase powder curing agent is built as facing in open coal mine of the present invention hole:: institute
Stating clot promoting material in pulvis is anhydrous sodium metasilicate and calcareous cementitious material mixed component, the two mass ratio 1:1, wherein calcareous gelling
Material is one of portland cement, white lime or carbide slurry.
A kind of prioritization scheme of roadbase powder curing agent is built as facing in open coal mine of the present invention hole: described
Miberal powder micro mist is to meet S95 grades of graining blast-furnace cinder micro-powders as defined in GB/T 18046-2008 standard in pulvis, is granulated blast-furnace
Slag is handled through iron removal by magnetic separation and grinding reaches specific surface area >=400 m2/ kg is made, and wherein partial size is super less than 30 μm
Grain refined blast-furnace cinder micro-powder accounts for 90% of gross mass or more.
A kind of prioritization scheme of roadbase powder curing agent is built as facing in open coal mine of the present invention hole: described
Pozzolanic materials is the higher silicon ash of pozzolanic activity, metakaolin or high-quality fly ash in pulvis.
A kind of prioritization scheme of roadbase powder curing agent is built as facing in open coal mine of the present invention hole: described
Surfactant is naphthalene system, aliphatic, one kind of high-efficiency water-reducing agent of poly-carboxylic acid in pulvis.
A kind of prioritization scheme of roadbase powder curing agent is built as facing in open coal mine of the present invention hole: described
Waterglass exciting agent is so that its modulus is existed by the way that suitable sodium hydroxide conciliation is added in the waterglass to high mode in liquor
Between 1.0-2.0, sodium silicate of the Baume degrees between 37 ° -48 °.
A kind of prioritization scheme of roadbase powder curing agent is built as facing in open coal mine of the present invention hole: described
Polymer emulsion in liquor is non-reactive styrene-butadiene latex, acrylic acid ester emulsion, acetate emulsion or ethene-vinyl acetate
Copolymer emulsion etc..
Face the application method for building roadbase powder curing agent in open coal mine hole described in a kind of, it is real as follows
Now coal dust solidification in hole:
(1) pulvis and liquor are prepared by said ratio respectively；
(2) by liquor and water according to mass ratio 1:5 dilution proportion；
(3) homogeneous slurry will be stirred into the liquor after pulvis addition dilution；
(1) coal dust and above-mentioned homogeneous slurry are put into agitating device after mixing evenly according to the ratio of mass ratio 1:0.3 ~ 0.5,
Paved in road surface, through leveling maintenance it is hard face in coal mine and build roadbase.
Face in open coal mine hole of the present invention and build roadbase curing agent with following beneficial features:
(1) solidify coal dust significant effect
With subtle powder a series of physical chemical action can occur for curing agent slurries of the present invention, and solidification effect is good, less volume
Loose coal dust can sufficiently be solidified and reach the foundation base intension for meeting requirement of engineering.
(2) exploitation again for not influencing coal dust uses
Loose coal dust can sufficiently be solidified under the less volume of curing agent of the present invention, reach and meet the strong of roadbase requirement
Degree, and do not change the original attribute of coal dust, solidification basic unit will not make the exploitation again of reinforcing area coal dust based on coal dust
With having an impact.
(3) solidification rapidly, shortens the construction period
A few hours powder, that is, curable and higher intensity, construction period are generated after curing agent slurries of the present invention and powder stirring
It is short, good economic benefit can be brought.
(4) convenient to use
Curing agent of the present invention only needs for two groups of effective components to be uniformly mixed, and when use only needs road using simple agitation device
Both road powder and hardening slurry, which are mixed evenly, to pave, and does not need additional special installation and configuration condition requirement,
It is of less demanding to construction personnel, it is ready-to-use to facilitate site operation.
(5) environmental-friendly, it is pollution-free
The present invention is made of nontoxic raw material simultaneously, will not be to environmental danger, and raw material contain solid waste
Ingredient economizes on resources, and protects environment, can bring good Benefits in economic and social terms.
Specific embodiment
Below with reference to embodiment, the present invention will be further described.
Embodiment 1
Face in open coal mine hole and build roadbase powder curing agent, be made of pulvis and liquor two parts, wherein pulvis is as master
Want ingredient proportion larger.
The pulvis is made of clot promoting material, slag micropowder, pozzolanic materials, surfactant；The quality of each component
Percentage:
The clot promoting material 15%, is made of anhydrous sodium metasilicate and carbide slurry, the two mass ratio 1:1.
The slag micropowder, 60%, it is micro- to meet S95 grades of granulated blast-furnace slags as defined in GB/T 18046-2008 standard
Powder, is handled for granulated blast-furnace slag through iron removal by magnetic separation and grinding reaches specific surface area >=400 m2/kg and is made, wherein partial size
Superfine graining blast-furnace cinder micro-powder less than 30 μm accounts for 90% or more of gross mass.
The pozzolanic materials, 20%, select silicon ash.
The surfactant, 5%, select naphthalene system.
The liquor is made of sodium silicate exciting agent, polymer emulsion, each component mass percent:
The sodium silicate exciting agent, 95%, to make it by the way that suitable sodium hydroxide conciliation is added in the waterglass to high mode
Modulus is between 1.0-2.0, sodium silicate of the Baume degrees between 37 ° -48 °.
The polymer emulsion, 5%, it is non-reactive styrene-butadiene latex.
When use first by liquor and water according to mass ratio 1:5 dilution proportion after, then by pulvis and liquor according to quality
Than being uniformly mixed in 7:3, then coal dust and mixed serum is stirred evenly according to mass ratio 1:0.5, paved.
Face that build roadbase powder curing agent preparation step as follows in open coal mine hole:
(1) pulvis and liquor are prepared by said ratio respectively；
(2) liquor is diluted with water；
(2) homogeneous slurry will be stirred into the liquor after pulvis addition dilution；
(3) paving concrete pavement after slurries spray being mixed with coal dust.
Embodiment 2
It is substantially the same manner as Example 1, except that:
The mass percent of the pulvis each component: where clot promoting material, 20%；Slag micropowder, 60%；Pozzolanic materials,
19%, select metakaolin；Surfactant, 1%, it is aliphatic.
The liquor each component mass percent: where sodium silicate exciting agent, 90%；Polymer emulsion, 10%, it is third
Olefin(e) acid ester lotion.
Embodiment 3
It is substantially the same manner as Example 1, except that:
The mass percent of the pulvis each component: clot promoting material, 25%；Slag micropowder, 50%；Pozzolanic materials, 24%, choosing
Use flyash；Surfactant, 1%, it is high-efficiency water-reducing agent of poly-carboxylic acid.
The liquor each component mass percent: sodium silicate exciting agent, 94%；Polymer emulsion, 6%, it is vinyl acetate
Lotion or ethylene-vinyl acetate copolymer emulsion.
Scope of protection of the present invention is not limited thereto, is original of the invention described in description above and embodiment
Reason and the specific example designed according to the principle of the invention, the variation in office why not being detached under the premise of spirit and scope of the invention
And modification, all it should belong in protection scope of the present invention.
Claims (8)
1. facing in a kind of open coal mine hole and building roadbase powder curing agent, it is characterised in that: the curing agent is (with mass fraction
Meter) it is made of the pulvis of 70%-90% and liquor two parts of 10%-30%；
Pulvis (based on mass fraction) by 15%-30% clot promoting material, 20%-60% slag micropowder, 10%-25% pozzolanic materials and
1%-2% surfactant composition；
Liquor (based on mass fraction) is made of 90%-95% sodium silicate exciting agent and 5%-10% polymer emulsion.
2. facing in open coal mine hole according to claim 1 and building roadbase powder curing agent, it is characterised in that: the powder
Clot promoting material is anhydrous sodium metasilicate and calcareous cementitious material mixed component, the two mass ratio 1:1, wherein calcareous cementitious material in agent
For one of portland cement, white lime or carbide slurry.
3. facing in open coal mine hole according to claim 1 and building roadbase powder curing agent, it is characterised in that: the powder
Miberal powder micro mist is to meet S95 grades of graining blast-furnace cinder micro-powders as defined in GB/T 18046-2008 standard in agent, is granulated blast-furnace mine
Slag is handled through iron removal by magnetic separation and grinding reaches specific surface area >=400 m2/ kg is made, and wherein partial size is ultra-fine less than 30 μm
Graining blast-furnace cinder micro-powder accounts for 90% of gross mass or more.
4. facing in open coal mine hole according to claim 1 and building roadbase powder curing agent, it is characterised in that: the powder
Pozzolanic materials is the higher silicon ash of pozzolanic activity, metakaolin or high-quality fly ash in agent.
5. facing in open coal mine hole according to claim 1 and building roadbase powder curing agent, it is characterised in that: the powder
Surfactant is naphthalene system, aliphatic, one kind of high-efficiency water-reducing agent of poly-carboxylic acid in agent.
6. facing in open coal mine hole according to claim 1 and building roadbase powder curing agent, it is characterised in that: the liquid
Waterglass exciting agent is to make its modulus in 1.0- by the way that suitable sodium hydroxide conciliation is added in the waterglass to high mode in agent
Between 2.0, sodium silicate of the Baume degrees between 37 ° -48 °.
7. facing in open coal mine hole according to claim 1 and building roadbase powder curing agent, it is characterised in that: the liquid
Polymer emulsion in agent is that non-reactive styrene-butadiene latex, acrylic acid ester emulsion, acetate emulsion or ethene-vinyl acetate are total
Copolymer emulsion etc..
8. face the application method for building roadbase powder curing agent in a kind of open coal mine hole as described in claim 1, it is special
Sign is: it is achieved by the steps of coal dust solidification in hole:
Step 1 presses said ratio preparation pulvis and liquor respectively；
Step 2, by liquor and water according to mass ratio 1:5 dilution proportion；
Step 3 will stir into homogeneous slurry in the liquor after pulvis addition dilution；
Step 4, by coal dust and above-mentioned homogeneous slurry according to the ratio of mass ratio 1:0.3 ~ 0.5, put into agitating device and stir evenly
Afterwards, paved in road surface, through leveling maintenance it is hard face in coal mine and build roadbase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811487367.5A CN109384447B (en) | 2018-12-06 | 2018-12-06 | Powder curing agent for temporary road base in open-pit coal mine pit and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811487367.5A CN109384447B (en) | 2018-12-06 | 2018-12-06 | Powder curing agent for temporary road base in open-pit coal mine pit and use method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN109384447A true CN109384447A (en) | 2019-02-26 |
| CN109384447B CN109384447B (en) | 2020-11-20 |
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|---|---|---|---|
| CN201811487367.5A Active CN109384447B (en) | 2018-12-06 | 2018-12-06 | Powder curing agent for temporary road base in open-pit coal mine pit and use method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114686239A (en) * | 2022-03-25 | 2022-07-01 | 山西路桥再生资源开发有限公司 | Coal-based solid waste soil curing agent and preparation method thereof |
| CN115362886A (en) * | 2022-08-25 | 2022-11-22 | 国家电投集团江西中业兴达电力实业有限公司 | Fly ash stacking and dust raising prevention method |
| CN115362886B (en) * | 2022-08-25 | 2024-06-04 | 国家电投集团江西中业兴达电力实业有限公司 | Fly ash stacking dust-raising prevention method |
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| CN107285677A (en) * | 2017-08-09 | 2017-10-24 | 中国矿业大学 | Solidification CO is sealed up for safekeeping using foam geopolymer filling mine goaf2Method |
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| EP1801084A1 (en) * | 2005-12-20 | 2007-06-27 | Pavel Svoboda | Fly-ash concrete compositon, method of preparation by geo-polymeric reaction of activated fly-ash and its use. |
| CN102381863A (en) * | 2011-07-22 | 2012-03-21 | 广州市建筑科学研究院有限公司 | Non-cement-based inorganic anchoring bonded bar adhesive and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114686239A (en) * | 2022-03-25 | 2022-07-01 | 山西路桥再生资源开发有限公司 | Coal-based solid waste soil curing agent and preparation method thereof |
| CN115362886A (en) * | 2022-08-25 | 2022-11-22 | 国家电投集团江西中业兴达电力实业有限公司 | Fly ash stacking and dust raising prevention method |
| CN115362886B (en) * | 2022-08-25 | 2024-06-04 | 国家电投集团江西中业兴达电力实业有限公司 | Fly ash stacking dust-raising prevention method |
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| CN109384447B (en) | 2020-11-20 |
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