CN105238374A - Hole sealing material, and preparation method and using method thereof - Google Patents
Hole sealing material, and preparation method and using method thereof Download PDFInfo
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- CN105238374A CN105238374A CN201410272817.4A CN201410272817A CN105238374A CN 105238374 A CN105238374 A CN 105238374A CN 201410272817 A CN201410272817 A CN 201410272817A CN 105238374 A CN105238374 A CN 105238374A
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- sealing material
- water reducer
- gypsum
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Abstract
The invention discloses a hole sealing material. The hole sealing material comprises the following raw materials in percentage by weight: 50-70% of sulphate aluminium cement, 5-15% of gypsum, 5-15% of coal ash, 5-15% of aluminum oxygen chamotte, 0.5-1% of a water reducer, 0.3-0.7% of calcium stearate and 0.2-1.0% of a foaming component. The invention further discloses a preparation method for and a using method of the hole sealing material. The hole sealing material is applied to gas extraction hole-sealing; and the hole sealing material is short in coagulation time, free of shrinkage, long in a continuous expansion period, high in strength and good in foaming and sealing performance.
Description
Technical field
The present invention relates to a kind of sealing material, refer to a kind of sealing material and preparation method thereof and using method especially.
Background technology
The hole sealing technology of current coal bed gas extraction boring is for adopting organic materials or inorganic materials shutoff, and typical case is as organic foam material-cementing, bag type paste sealing of hole, inflation (water filling) capsule-cementing and drape process urethane sealing of hole.Traditional cementing, cement setting is slow and easily shrink, bleed, cause stopping property poor, be only applicable to upper and lower to boring, to this concordant hole, coal seam and Small angle borehole sealing unreal, easily leak gas, desirable requirement do not reached to the sealed borehole length that wide-angle is holed.Organic foaming such as urethane sealing material temperature of reaction is high, and reaction is violent, has a large amount of reaction heat to release, and has strong smell to generate, speed of response is too fast, and the presetting period is non-adjustable, and sealed borehole length is wayward, and sealing of hole intensity is low, eakiness, easily leak gas, cost is higher.
Summary of the invention
The present invention proposes a kind of sealing material and preparation method thereof and using method, solves sealing of hole weak effect and the uppity problem of sealing of hole process in above-mentioned prior art.
Technical scheme of the present invention is achieved in that
A kind of sealing material, its raw material comprises according to weight ratio: aluminosulfate cement 50-70%, gypsum 5-15%, flyash 5-15%, aluminum oxide clinker 5-15%, water reducer 5-10 ‰, calcium stearate 0.3-0.7% and foaming component 0.2-1.0%.
Further, described gypsum is desulfurated plaster or plaster stone; Described foaming component is hydrogen peroxide or aluminium powder.
Further, the weight ratio of described gypsum, described flyash and described aluminum oxide clinker is 1:1:1.
Further, described water reducer is naphthalene water reducer, aliphatic water reducing agent, amino water reducer, polycarboxylate water-reducer, sulfonated lignin, naphthalenesulfonate water reducer, melamine based water reducer or powder polycarboxylate.
Further, described aluminosulfate cement 60%, described gypsum 10%, described fine coal 10%, described aluminum oxide clinker 10%, described water reducer 7 ‰, described calcium stearate 0.5% and hydrogen peroxide 0.5%.
The invention still further relates to the preparation method of above-mentioned sealing material, desired raw material is uniformly mixed, stirring at normal temperature 10-30min, obtain described sealing material; Described raw material comprises according to weight ratio: aluminosulfate cement 50-70%, gypsum 5-15%, flyash 5-15%, aluminum oxide clinker 5-15%, water reducer 5-10 ‰, calcium stearate 0.3-0.7% and foaming component 0.2-1.0%.
The invention still further relates to the using method of above-mentioned sealing material, described sealing material is mixed with the weight ratio of 100:50-70 with water, after stirring, mortar depositing construction.
Beneficial effect of the present invention is: sealing material of the present invention is short for time of coagulation, 30-40min; Do not shrink, the prolonged expansion phase is long, is about 1 year; Intensity is high, avoid pressure in extraction process, vibrations formed fragmentation cause Gas to cause danger; Good seal performance, gas pumping utilization ratio is high; With same type of material ratio, because good airproof performance, gas emission is large, and the relative extraction phase shortens 1/3rd.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Sealing material in embodiment, its raw material comprises according to weight ratio: aluminosulfate cement 50-70%, gypsum 5-15%, flyash 5-15%, aluminum oxide clinker 5-15%, water reducer 5-10 ‰, calcium stearate 0.3-0.7% and foaming component 0.2-1.0%.Wherein, the model of aluminosulfate cement is 425,725,825 or 925, does not comprise 225 and 325.
Preferably, the weight ratio of gypsum, flyash and aluminum oxide clinker is 1:1:1.
Described gypsum is desulfurated plaster or plaster stone; Described foaming component is hydrogen peroxide or aluminium powder; Described water reducer is naphthalene water reducer, aliphatic water reducing agent, amino water reducer, polycarboxylate water-reducer, sulfonated lignin, naphthalenesulfonate water reducer, melamine based water reducer or powder polycarboxylate.
Mixed by above-mentioned raw materials, stirring at normal temperature 10-30min, can obtain sealing material, finally by measuring, packing, check, dispatch from the factory.
During use, above-mentioned sealing material is mixed with the ratio of weight ratio 100:50-70 with water, stirs, adopt grouting pump construction.
The proportioning of above-mentioned each raw material is different, can form different embodiments, specific as follows.
Embodiment 1
A kind of sealing material, its raw material comprises according to weight ratio: aluminosulfate cement 50%, gypsum 15%, flyash 15%, aluminum oxide clinker 15%, water reducer 5 ‰, calcium stearate 0.7% and aluminium powder 1.0%.Mixed by above-mentioned raw materials, stirring at normal temperature 10-30min, can obtain sealing material.During use, above-mentioned sealing material is mixed with the ratio of weight ratio 100:50-70 with water, stirs, mortar depositing construction.
Adopt the sealing material sealing of hole prepared in the present embodiment, its time of coagulation is 33min, is 90%, opens single pump extraction, aperture negative pressure 30KPa, extraction main negative pressure 45KPa during boring single hole gas density conjunction stubble; Do not produce mutation in a variety of weather conditions, its strength stability is as shown in table 1:
Table 1
Embodiment 2
A kind of sealing material, its raw material comprises according to weight ratio: aluminosulfate cement 60%, gypsum 10%, flyash 10%, aluminum oxide clinker 10%, water reducer 7 ‰, calcium stearate 0.5% and hydrogen peroxide 0.5%.Mixed by above-mentioned raw materials, stirring at normal temperature 10-30min, can obtain sealing material.During use, above-mentioned sealing material is mixed with the ratio of weight ratio 100:50-70 with water, stirs, mortar depositing construction.
Adopt the sealing material sealing of hole prepared in the present embodiment, its time of coagulation is 30min, is 95%, opens single pump extraction, aperture negative pressure 34KPa, extraction main negative pressure 54KPa during boring single hole gas density conjunction stubble; Do not produce mutation in a variety of weather conditions, its strength stability is as shown in table 2:
Table 2
Embodiment 3
A kind of sealing material, its raw material comprises according to weight ratio: aluminosulfate cement 70%, gypsum 5%, flyash 5%, aluminum oxide clinker 5%, water reducer 10 ‰, calcium stearate 0.7% and aluminium powder 0.8%.Mixed by above-mentioned raw materials, stirring at normal temperature 10-30min, can obtain sealing material.During use, above-mentioned sealing material is mixed with the ratio of weight ratio 100:50-70 with water, stirs, mortar depositing construction.
Adopt the sealing material sealing of hole prepared in the present embodiment, its time of coagulation is 35min, is 93%, opens single pump extraction, aperture negative pressure 30KPa, extraction main negative pressure 50KPa during boring single hole gas density conjunction stubble; Do not produce mutation in a variety of weather conditions, its strength stability is as shown in table 3:
Table 3
Embodiment 4
A kind of sealing material, its raw material comprises according to weight ratio: aluminosulfate cement 60%, gypsum 5%, flyash 8%, aluminum oxide clinker 12%, water reducer 8 ‰, calcium stearate 0.3% and hydrogen peroxide 0.2%.Mixed by above-mentioned raw materials, stirring at normal temperature 10-30min, can obtain sealing material.During use, above-mentioned sealing material is mixed with the ratio of weight ratio 100:50-70 with water, stirs, mortar depositing construction.
Adopt the sealing material sealing of hole prepared in the present embodiment, its time of coagulation is 30min, is 92%, opens single pump extraction, aperture negative pressure 28KPa, extraction main negative pressure 51KPa during boring single hole gas density conjunction stubble; Do not produce mutation in a variety of weather conditions, its strength stability is as shown in table 4:
Table 4
Embodiment 5
A kind of sealing material, its raw material comprises according to weight ratio: aluminosulfate cement 60%, gypsum 10%, flyash 15%, aluminum oxide clinker 5%, water reducer 7 ‰, calcium stearate 0.5% and hydrogen peroxide 0.5%.Mixed by above-mentioned raw materials, stirring at normal temperature 10-30min, can obtain sealing material.During use, above-mentioned sealing material is mixed with the ratio of weight ratio 100:50-70 with water, stirs, mortar depositing construction.
Adopt the sealing material sealing of hole prepared in the present embodiment, its time of coagulation is 40min, is 80%, opens single pump extraction, aperture negative pressure 25KPa, extraction main negative pressure 40KPa during boring single hole gas density conjunction stubble; Do not produce mutation in a variety of weather conditions, its strength stability is as shown in table 5:
Table 5
Compared with traditional product in actual applications by sealing material in embodiment 1-3, result is as follows:
1, adopt conventional borehole technique, be generally 20 ~ 60% when single hole concentration closes stubble, decay to 5 ~ 20% after one ~ bis-week, the rate of decay is fast; Adopt hole-sealing technology of the present invention, when boring single hole concentration closes stubble more than 90%, to take out after 1 ~ 2 month concentration in advance substantially more than 80%.
2, extraction total amount contrasts: adopt traditional technology sealing of hole to take out in advance, need could to realize extraction in 3 ~ 4 months up to standard; And adopt sealing material sealing of hole of the present invention to take out in advance, need can to realize extraction in about 2 months up to standard.
3, extraction concentration extraction current capacity contrast: adopt traditional hole-sealing technology, extraction concentration about 2%, extraction scale 1.0 ~ 1.6m
3/ min; Adopt hole-sealing technology of the present invention, extraction concentration 40 ~ 80%, extraction scale 1.5 ~ 2.5m
3/ min.
4, extraction negative pressure contrasts: adopt traditional technology sealing of hole, and boring gas leak phenomenon is difficult to solve, and after the extraction of unlatching two pumps, aperture negative pressure just can reach 13KPa extraction main negative pressure 26 ~ 35KPa.Adopt hole-sealing technology of the present invention, open single pump extraction, aperture negative pressure 22 ~ 34KPa, extraction main negative pressure 45 ~ 54KPa, while raising extracting result, also serve energy-saving and cost-reducing effect.
5, gas control effect: the reduction adopting hole-sealing technology gas emission of the present invention, is conducive to the speedy drivage of coal road.
6, sealing material of the present invention is applicable to layer-through drilling sealing of hole and concordant ultra-long drilled holes, and the rising borehole sealing of hole best results that angle is larger.
In sum, the performance characteristics of sealing material of the present invention: the presetting period is adjustable, setting rate is fast, shorten construction period, there is expansion stress effect, borehole circumference crack can be sealed and solidify rear lower shrinkage, good sealing effect, liquid slurry degree of mobilization is good, can be used for extending sealed borehole length, is adapted to firedamp taking-out discharging drilling (concordant hole and wear a layer hole) sealing of hole and gas pressure measurement sealing of hole.
In the embodiment of the present invention, raw material adopts the aluminosulfate cement with micro-expansibility; Gypsum plays expansion in the feed; Flyash plays auxiliary pump action; Aluminum oxide clinker plays enhancement, forms skeleton shape at interiors of products, and increase the prolonged expansion phase of product, the extraction phase is generally 3 months, and prolonged expansion phase length does not affect later stage gas extraction concentration, and be approximately 1 year, rate of expansion is 0.02%; Calcium stearate plays stablizer, make product early, rear, mid-term properties stablize, do not produce mutation in a variety of weather conditions; Adopt low ratio foamed component can meet the intensity of product, certain gas release can be provided again, meet seal request.In sum, between above-mentioned raw materials mutually synergy make product of the present invention time of coagulation short, do not shrink, the prolonged expansion phase is long, intensity is high, foaming good seal performance.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a sealing material, it is characterized in that, its raw material comprises according to weight ratio: aluminosulfate cement 50-70%, gypsum 5-15%, flyash 5-15%, aluminum oxide clinker 5-15%, water reducer 5-10 ‰, calcium stearate 0.3-0.7% and foaming component 0.2-1.0%.
2. sealing material according to claim 1, is characterized in that, described gypsum is desulfurated plaster or plaster stone; Described foaming component is hydrogen peroxide or aluminium powder.
3. sealing material according to claim 1, is characterized in that, the weight ratio of described gypsum, described flyash and described aluminum oxide clinker is 1:1:1.
4. sealing material according to claim 1, it is characterized in that, described water reducer is naphthalene water reducer, aliphatic water reducing agent, amino water reducer, polycarboxylate water-reducer, sulfonated lignin, naphthalenesulfonate water reducer, melamine based water reducer or powder polycarboxylate.
5. sealing material according to claim 1, is characterized in that, described aluminosulfate cement 60%, described gypsum 10%, described fine coal 10%, described aluminum oxide clinker 10%, described water reducer 7 ‰, described calcium stearate 0.5% and hydrogen peroxide 0.5%.
6. a preparation method for sealing material, is characterized in that, is uniformly mixed by desired raw material, stirring at normal temperature 10-30min, obtains described sealing material;
Described raw material comprises according to weight ratio: aluminosulfate cement 50-70%, gypsum 5-15%, flyash 5-15%, aluminum oxide clinker 5-15%, water reducer 5-10 ‰, calcium stearate 0.3-0.7% and foaming component 0.2-1.0%.
7. preparation method according to claim 6, is characterized in that, described gypsum is desulfurated plaster or plaster stone; Described foaming component is hydrogen peroxide or aluminium powder; Described water reducer is naphthalene water reducer, aliphatic water reducing agent, amino water reducer, polycarboxylate water-reducer, sulfonated lignin, naphthalenesulfonate water reducer, melamine based water reducer or powder polycarboxylate.
8. the preparation method according to claim 6 or 7, is characterized in that, the weight ratio of described gypsum, described flyash and described aluminum oxide clinker is 1:1:1.
9. preparation method according to claim 6, is characterized in that, described aluminosulfate cement 60%, described gypsum 10%, described fine coal 10%, described aluminum oxide clinker 10%, described water reducer 7 ‰, described calcium stearate 0.5% and hydrogen peroxide 0.5%.
10. a using method for the sealing material as shown in claim 1-5, is characterized in that, is mixed by described sealing material with water with the weight ratio of 100:50-70, after stirring, and mortar depositing construction.
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| CN201410272817.4A CN105238374A (en) | 2014-06-18 | 2014-06-18 | Hole sealing material, and preparation method and using method thereof |
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| CN201410272817.4A CN105238374A (en) | 2014-06-18 | 2014-06-18 | Hole sealing material, and preparation method and using method thereof |
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Cited By (3)
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| CN106220121A (en) * | 2016-07-21 | 2016-12-14 | 中煤科工集团重庆研究院有限公司 | Coal-philic gas extraction drilling and hole sealing material and using method thereof |
| CN107879705A (en) * | 2017-11-21 | 2018-04-06 | 淮南久辉工贸有限责任公司 | A kind of mining inorganic sealing hole material and preparation method thereof and application method |
| CN112174616A (en) * | 2020-08-26 | 2021-01-05 | 煤科集团沈阳研究院有限公司 | Underground consolidation material and method for loose coal rock mass in small kiln damage area |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107879705A (en) * | 2017-11-21 | 2018-04-06 | 淮南久辉工贸有限责任公司 | A kind of mining inorganic sealing hole material and preparation method thereof and application method |
| CN112174616A (en) * | 2020-08-26 | 2021-01-05 | 煤科集团沈阳研究院有限公司 | Underground consolidation material and method for loose coal rock mass in small kiln damage area |
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Application publication date: 20160113 |
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