CN1963153A - Downhole crushed coal leak-stopping fire-proofing agent for use in coal mine - Google Patents
Downhole crushed coal leak-stopping fire-proofing agent for use in coal mine Download PDFInfo
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- CN1963153A CN1963153A CN 200610070579 CN200610070579A CN1963153A CN 1963153 A CN1963153 A CN 1963153A CN 200610070579 CN200610070579 CN 200610070579 CN 200610070579 A CN200610070579 A CN 200610070579A CN 1963153 A CN1963153 A CN 1963153A
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Abstract
The invention involves a leakage prevention fire-proofing agent made of broken coals under the coal mine. It features in the formation of materials in the following weight proportion: gelatinization material: calcium hydrate: magnesium chloride or natrium chloratum: carrier agent = 0.5-1:6-8:1-4: 70-90, with gelatinization material selected from silica dioxide, silicate of soda, bisilicate, aluminium sodium, or sodium aluminate and the carrier agent using water. Reducing the quantity and usage of materials, it reduces cost with cheap materials, requires little for storage and delivery, it is simple in onsite operation without added any further equipments, and convenient for promotion. With good self combustion effect of the coal, it will not desiccate, and leak-in within two months. It can satisfy the fire prevention requirements in building stopping plasm, firewall of blocking the leakage of poisonous gas, glue filling and spraying coal surface and it meets the comprehensive fire prevention demand.
Description
Technical field
The invention belongs to safety of coal mines technology category, be specifically related to a kind of downhole crushed coal leak-stopping fire-proofing agent for use in coal mine that is applicable to.
Be specially adapted to scope of operation coal seam and be thicker than the above medium-thickness seam of 1.3m, the gas relative amount of mine gas emission is greater than 10m3/t, and absolute outburst amount is greater than the highly gassy mine of 40m3/min and adopt the needs of control spontaneous fire under the coal mine of mining technology.
Background technology
The main cause that colliery breeding fire (spontaneous combustion or title spontaneous fire) takes place, the coal of being exploited is under broken and the coal body crack state, the down-hole ventilate created in broken coal leak out, the condition of oxygen supply, coal is having under the stable oxygen supply condition, constantly oxidation, heating, heat accumulation, intensification, heat accumulation, the breaking out of fire to reaching self-ignition point.
The main place that exists spontaneous combustionof coal to get angry
The one, in the most mining technologies that adopt of medium-thickness seam production practice
Mining technology, its rate of extraction still have coal about 30% to be retained in and have adopted the district about 70%.In order to improve the rate of extraction, only stay 5～6 meters coal body to make coal column between work plane and the work plane, it is crisp, cracked when second adjacent face exploited after first face had been adopted owing to pressed by easily that 5～6m is the thick coal column of mining influence, roof weighting, cause to the goaf of first face and the coal column of itself and leak out, form broken coal oxidation, spontaneous combustion;
The 2nd, at the highly gassy mine of medium-thickness seam
Highly gassy mine is in order to water down gas, and work plane air distribution amount majority is at 2000～3000m
3/ min, make work plane form jet, repeatedly measure, to the 60m scope of goaf, form sufficient oxygen supply band at work plane through the scene at the air intake corner, according to domestic statistics, it is in the scope of the goaf of air intake corner that the spontaneous combustion of work plane goaf coal has more than 70%.Inject the distinguished and admirable of goaf simultaneously, also bring the high concentration gas in the goaf and other pernicious gas into work plane and return air corner, cause gas and other pernicious gas to transfinite, cause ignition, spontaneous combustion when condition is suitable;
The 3rd, the exploitation of work plane and stop the fief point
Apart from the open-off cut of work plane and stop adopting in line 10～30m scope can not the caving coal, cause a large amount of something lost coals, the continuous oxidation of broken coal, accumulation of heat cause ignition, spontaneous combustion when condition is suitable.
In preventing the prior art of spontaneous combustionof coal, comparatively advanced is to adopt gel retardant, but also has many problems:
Water glass---ammonium salt gel produces the poisonous ammonia that flavor is arranged, high-molecular gel or foamed resin cost height, complex process.
Notice of authorization CN1126806C name is called " gel retardant that prevents spontaneous combustionof coal in the ore deposit ", and material is cheap and easy to get, and making and convenient to use is being a a progressive step aspect the inorganic gel retardant.But the share of chemical raw material also might reduce again in the material mixture ratio, and the retardant protection time limit also might continue to prolong.
The application is that the continuation on above-mentioned patent basis improves, and under the prerequisite that guarantees result of use, has further simplified, reduced the kind of chemical raw material, share in the material mixture ratio, has further reduced cost; Performance continues to improve, and guard time further prolongs.
Summary of the invention
Purpose of the present invention is exactly that above-mentioned prior art is continued to improve a kind of downhole crushed coal leak-stopping fire-proofing agent for use in coal mine that is applicable to of development.
The application's technical scheme is:
Develop a kind of downhole crushed coal leak-stopping fire-proofing agent for use in coal mine, it is characterized in that described leak-stopping fire-proofing agent for use made by the material of following weight proportion:
Can generate gel rubber material: calcium hydroxide: magnesium chloride or sodium chloride: mounting medium=0.5～1: 6～8: 1～4: 70～90;
Can generate gel rubber material selects from silica, silicate of soda, sodium metasilicate, sodium aluminosilicate, sodium metaaluminate or sodium aluminate;
Mounting medium is a water.
Above-mentioned downhole crushed coal leak-stopping fire-proofing agent for use in coal mine is characterized in that making up under coal mine when blocking the slurry fire wall fast, and the weight proportion of material is:
Can generate gel rubber material: calcium hydroxide: magnesium chloride or sodium chloride: water=0.5～1: 6～8: 1～2: 80～90.
Above-mentioned downhole crushed coal leak-stopping fire-proofing agent for use in coal mine, when it is characterized in that the spraying coal body is surperficial under coal mine, the weight proportion of material is:
Can generate gel rubber material: calcium hydroxide: magnesium chloride or sodium chloride: water=0.5～1: 6～7: 3～4: 70～80.
Above-mentioned downhole crushed coal leak-stopping fire-proofing agent for use in coal mine is characterized in that under coal mine when the coal column of broken coal injecting glue or crushing was drilled injecting glue, the weight proportion of material was:
Can generate gel rubber material: calcium hydroxide: magnesium chloride or sodium chloride: water=0.5～1: 6～7: 2～3: 70～80.
The usage of downhole crushed coal leak-stopping fire-proofing agent for use in coal mine of the present invention is characterized in that the usage of this leak-stopping fire-proofing agent for use is respectively:
(1) need under coal mine, make up when blocking the slurry fire wall fast, the generated gel rubber material of weighing dosage as required, calcium hydroxide and magnesium chloride or sodium chloride, fireproofing agent self mixing, add the broken coal of 8～9 times of amounts of fireproofing agent weight again, continue mixing, dress woven bag buttress is built into fire-proof wall, annotates to add dosage water in the mixture woven bag, fireproofing agent suction reaction continues to expand gap shutoff the most at last;
(2) in the time of need under coal mine, spraying the coal body surface, the generated gel rubber material of weighing dosage as required, calcium hydroxide and magnesium chloride or sodium chloride, fireproofing agent self mixing, stir down and add in the dosage water, continue to be stirred to the formation gel state, use the spraying head type shower nozzle, evenly be sprayed on the media surface that needs covering;
(3) need be under coal mine when the coal column of broken coal injecting glue or crushing be drilled injecting glue, the generated gel rubber material of weighing dosage as required, calcium hydroxide and magnesium chloride or sodium chloride, fireproofing agent self mixing, stir down and add in the dosage water, continue to be stirred to the formation gel state, be pumped into high-pressure slip-casting, irritate saturating to boring or broken coal, the crack has when overflowing to stop.
Advantage of the present invention compared with the prior art is:
1. further simplify, reduced the quantity and the consumption of raw material in the material mixture ratio, further reduced cost; Cost 1.5～20,000 of prior art leak-stopping fire-proofing agent for use yuan ±/ton; The application's leak-stopping fire-proofing agent for use cost≤500 yuan/ton.
2. material therefor is cheap, and requirement condition is low aspect storage, transportation, easy storage and transport, and execute-in-place is easy, need not to increase in addition equipment construction, is easy to promote.
3. the control spontaneous combustionof coal is effective, and using the back can be not dry and cracked within 2 months, leak out.
4. applied widely, can satisfy fully-mechanized mining working and build different location fireproof requirements such as blocking slurry, stifled poisonous gas leakage fire wall, injecting glue, spraying coal body surface; The needs of the comprehensive fire prevention measure of field conduct under the coal mine have been satisfied.
The specific embodiment
Embodiment 1 structure work plane advances, the return air corner is built and blocked slurry, stifled goaf poisonous gas leakage, fire wall fast
Material: silica, commercial goods, fineness 200 orders; Calcium hydroxide, quicklime slaking preparation, fineness 50～100 orders; Magnesium chloride, commercial goods, fineness 100 orders; Mounting medium, ordinary water.
The weight proportion of material is: silica: calcium hydroxide: magnesium chloride: water=0.5: 6: 1: 80;
Usage:
The silica of weighing dosage as required, calcium hydroxide and magnesium chloride, fireproofing agent self mixing, add the broken coal of 8～9 times of amounts of fireproofing agent weight again, continue mixing, advance at work plane, the return air corner build block slurry fast, when blocking up goaf poisonous gas leakage, fire wall, material as masonry panel, dress woven bag buttress is built into fire-proof wall, annotates to add dosage water in the mixture woven bag, and fireproofing agent suction reaction continues to expand, gelation time in 30min, gap shutoff the most at last.
Having spontaneous combustion of coal seam tendency and highly gassy mine, per 10～20m just need build together, adopts present techniques, and the fire wall pressurized that builds up does not ftracture, and has good infiltration leak stopping function; It is an endothermic process that gel becomes the glue process, has the absorbing and cooling temperature function.Not only saved manually but also the economical with materials expense, and speed is fast, good effect has been received in construction easily.
Certain ore deposit statistics, each coal-face need be used gel spinning fire agent 6～8T in every month; Broken coal leak-stopping fire-proofing agent for use of the present invention compared with the prior art, by the minimum 1.5 ten thousand yuan of calculating of saving per ton, can save more than 1,000,000 yuan every year, obtained favorable economic benefit.Secondly, use has at the scene improved the mine production environment greatly, has ensured worker's physical and mental health, has received good social benefit.
Embodiment 2 structure work planes advance, the return air corner is built and blocked slurry, stifled goaf poisonous gas leakage, fire wall fast
The weight proportion of material is: silicate of soda: calcium hydroxide: sodium chloride: water=1: 8: 2: 90;
Adopt sodium chloride to replace magnesium chloride, all the other are with embodiment 1.
The leak-stopping fire-proofing agent for use on (being coated with) coal body surface is sprayed in embodiment 3 preparations
The weight proportion of material is: sodium metasilicate: calcium hydroxide: magnesium chloride: water=0.5: 6: 3: 70.
Usage: the sodium metasilicate of weighing dosage as required, calcium hydroxide and magnesium chloride, fireproofing agent self mixing adds in the dosage water under stirring, and continues to be stirred to the formation gel state, uses the spraying head type shower nozzle, evenly is sprayed on the media surface that needs covering;
Becoming glue preceding is flowable liquids, is gel behind the one-tenth glue, and nontoxic, tasteless, gelation time 0.5～10min can regulate as required.
After spraying (being coated with) coal body surface, the final pasty gel that forms can effectively be covered in the coal body surface, and the parcel coal body increases tightness, and contacting of isolated coal and air reduces the ability to take oxygen of coal; Calcium hydroxide component wherein, the composition of spontaneous combustion reaction easily generates the salt that is difficult for spontaneous combustion in energy and the coal body; The application's the solution impregnation coal body that makes, the external moisture content of increase coal can play the absorbing and cooling temperature effect during heat absorption cooling, reduces the oxidation activity of coal.Use the back in 60 days still agglutination stick to the coal body surface, stop the catalytic oxidation of oxygen in coal and the air, prolong the spontaneous combustion ignition phase.When needing, can spray once more or repeatedly, to prolong its anti-fire action.
The leak-stopping fire-proofing agent for use on (being coated with) coal body surface is sprayed in embodiment 4 preparations
The material weight proportioning is: sodium aluminosilicate: calcium hydroxide: sodium chloride: water=1: 7: 4: 80.All the other are with embodiment 3.
Embodiment 5 preparation is as to the broken coal injecting glue or to the coal column of the crushing gel that injecting glue uses of drilling
The weight proportion of material is:: calcium hydroxide: magnesium chloride: water=0.5: 6: 2: 70.
Usage: the sodium metaaluminate of weighing dosage as required, calcium hydroxide and magnesium chloride sodium, fireproofing agent self mixing adds in the dosage water under stirring, and continues to be stirred to the formation gel state; Becoming glue preceding is flowable liquids, is gel behind the one-tenth glue, and nontoxic, tasteless, gelation time 0.5～10min can regulate as required.
Every 10～15m well cementing, be pumped into high-pressure slip-casting, irritate saturating to boring or broken coal, the crack has when overflowing to stop.Use back still agglutination in 60 days, stop the catalytic oxidation of oxygen in coal and the air, prolong spontaneous combustion and get angry the phase.When needing, can spray once more or repeatedly, to prolong its anti-fire action.
Embodiment 6 preparation is as to the broken coal injecting glue or to the coal column of the crushing gel that injecting glue uses of drilling
The material weight proportioning is: sodium aluminate: calcium hydroxide: sodium chloride: water=1: 7: 3: 80.All the other are with embodiment 5.
Claims (5)
1. downhole crushed coal leak-stopping fire-proofing agent for use in coal mine is characterized in that described leak-stopping fire-proofing agent for use made by the material of following weight proportion:
Can generate gel rubber material: calcium hydroxide: magnesium chloride or sodium chloride: mounting medium=0.5～1: 6～8: 1～4: 70～90;
Can generate gel rubber material selects from silica, silicate of soda, sodium metasilicate, sodium aluminosilicate, sodium metaaluminate or sodium aluminate;
Mounting medium is a water.
2. according to the described downhole crushed coal leak-stopping fire-proofing agent for use in coal mine of claim 1, it is characterized in that making up under coal mine when blocking the slurry fire wall fast, the weight proportion of material is:
Can generate gel rubber material: calcium hydroxide: magnesium chloride or sodium chloride: water=0.5～1: 6～8: 1～2: 80～90.
3. according to the described downhole crushed coal leak-stopping fire-proofing agent for use in coal mine of claim 1, when it is characterized in that the spraying coal body is surperficial under coal mine, the weight proportion of material is:
Can generate gel rubber material: calcium hydroxide: magnesium chloride or sodium chloride: water=0.5～1: 6～7: 3～4: 70～80.
4. according to the described downhole crushed coal leak-stopping fire-proofing agent for use in coal mine of claim 1, it is characterized in that under coal mine when the coal column of broken coal injecting glue or crushing was drilled injecting glue, the weight proportion of material was:
Can generate gel rubber material: calcium hydroxide: magnesium chloride or sodium chloride: water=0.5～1: 6～7: 2～3: 70～80.
5. according to the usage of claim 1,2,3 or 4 described downhole crushed coal leak-stopping fire-proofing agent for use in coal mine, it is characterized in that the usage of this leak-stopping fire-proofing agent for use is respectively:
(1) need under coal mine, make up when blocking the slurry fire wall fast, the generated gel rubber material of weighing dosage as required, calcium hydroxide and magnesium chloride or sodium chloride, fireproofing agent self mixing, add the broken coal of 8～9 times of amounts of leak-stopping fire-proofing agent for use weight again, continue mixing, dress woven bag buttress is built into fire-proof wall, annotates to add dosage water in the mixture woven bag, leak-stopping fire-proofing agent for use suction reaction continues to expand gap shutoff the most at last;
(2) in the time of need under coal mine, spraying the coal body surface, the generated gel rubber material of weighing dosage as required, calcium hydroxide and magnesium chloride or sodium chloride, leak-stopping fire-proofing agent for use self mixing, stir down and add in the dosage water, continue to be stirred to the formation gel state, use the spraying head type shower nozzle, evenly be sprayed on the media surface that needs covering;
(3) need be under coal mine when the coal column of broken coal injecting glue or crushing be drilled injecting glue, the generated gel rubber material of weighing dosage as required, calcium hydroxide and magnesium chloride or sodium chloride, leak-stopping fire-proofing agent for use self mixing, stir down and add in the dosage water, continue to be stirred to the formation gel state, be pumped into high-pressure slip-casting, irritate saturating to boring or broken coal, the crack has when overflowing to stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610070579A CN100575667C (en) | 2006-12-05 | 2006-12-05 | Downhole crushed coal leak-stopping fire-proofing agent for use in coal mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610070579A CN100575667C (en) | 2006-12-05 | 2006-12-05 | Downhole crushed coal leak-stopping fire-proofing agent for use in coal mine |
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| Publication Number | Publication Date |
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| CN1963153A true CN1963153A (en) | 2007-05-16 |
| CN100575667C CN100575667C (en) | 2009-12-30 |
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| CN200610070579A Expired - Fee Related CN100575667C (en) | 2006-12-05 | 2006-12-05 | Downhole crushed coal leak-stopping fire-proofing agent for use in coal mine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536303A (en) * | 2011-12-16 | 2012-07-04 | 董曰喜 | Diluent for hydrogen sulfide and methane of coal layer in coal mine |
| CN103977517A (en) * | 2014-05-08 | 2014-08-13 | 董福明 | Coal mine fire preventing and extinguishing gel |
| CN104001290A (en) * | 2014-05-08 | 2014-08-27 | 董福明 | Preparation method of fire prevention and extinguishing gel for mining |
| CN106010728A (en) * | 2016-05-12 | 2016-10-12 | 成都易创思生物科技有限公司 | Fire retardant capable of preventing spontaneous combustion of carbon material |
| CN106930783A (en) * | 2015-12-29 | 2017-07-07 | 肖栋 | A kind of bioanalysis coal spontaneous combustion suppressing method and technology |
| RU2665944C2 (en) * | 2016-04-29 | 2018-09-05 | Общество с ограниченной ответственностью "Научно-производственное предприятие "Промышленные технологии химического синтеза" | Anti-pyrohenogenic reagent for preventing coal self-ignition in storage and transportation |
| CN110259511A (en) * | 2019-06-19 | 2019-09-20 | 淄博祥龙测控技术有限公司 | Goaf microseism leak stopping collapses administering method |
| CN110985102A (en) * | 2019-12-24 | 2020-04-10 | 济南大学 | Sulfuric acid residue composite explosion suppression material for suppressing coal dust explosion and preparation method and application thereof |
| CN114470602A (en) * | 2022-02-28 | 2022-05-13 | 西南交通大学 | Fire extinguishing material for shallow goaf of coal field fire zone and preparation method thereof |
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2006
- 2006-12-05 CN CN200610070579A patent/CN100575667C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536303A (en) * | 2011-12-16 | 2012-07-04 | 董曰喜 | Diluent for hydrogen sulfide and methane of coal layer in coal mine |
| CN103977517A (en) * | 2014-05-08 | 2014-08-13 | 董福明 | Coal mine fire preventing and extinguishing gel |
| CN104001290A (en) * | 2014-05-08 | 2014-08-27 | 董福明 | Preparation method of fire prevention and extinguishing gel for mining |
| CN106930783A (en) * | 2015-12-29 | 2017-07-07 | 肖栋 | A kind of bioanalysis coal spontaneous combustion suppressing method and technology |
| RU2665944C2 (en) * | 2016-04-29 | 2018-09-05 | Общество с ограниченной ответственностью "Научно-производственное предприятие "Промышленные технологии химического синтеза" | Anti-pyrohenogenic reagent for preventing coal self-ignition in storage and transportation |
| RU2637221C2 (en) * | 2016-04-29 | 2018-09-05 | Валерий Викторович Жмаев | Anti-pyrohenogenic reagent for preventing coal self-ignition in storage and transportation |
| CN106010728A (en) * | 2016-05-12 | 2016-10-12 | 成都易创思生物科技有限公司 | Fire retardant capable of preventing spontaneous combustion of carbon material |
| CN110259511A (en) * | 2019-06-19 | 2019-09-20 | 淄博祥龙测控技术有限公司 | Goaf microseism leak stopping collapses administering method |
| CN110985102A (en) * | 2019-12-24 | 2020-04-10 | 济南大学 | Sulfuric acid residue composite explosion suppression material for suppressing coal dust explosion and preparation method and application thereof |
| CN110985102B (en) * | 2019-12-24 | 2021-07-02 | 济南大学 | Sulfuric acid residue composite explosion suppression material for suppressing coal dust explosion and preparation method and application thereof |
| CN114470602A (en) * | 2022-02-28 | 2022-05-13 | 西南交通大学 | Fire extinguishing material for shallow goaf of coal field fire zone and preparation method thereof |
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| CN100575667C (en) | 2009-12-30 |
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Granted publication date: 20091230 Termination date: 20101205 |