CN112814725A - Secondary film covering method for fire-fighting prevention slurry in goaf - Google Patents
Secondary film covering method for fire-fighting prevention slurry in goaf Download PDFInfo
- Publication number
- CN112814725A CN112814725A CN202110248836.3A CN202110248836A CN112814725A CN 112814725 A CN112814725 A CN 112814725A CN 202110248836 A CN202110248836 A CN 202110248836A CN 112814725 A CN112814725 A CN 112814725A
- Authority
- CN
- China
- Prior art keywords
- slurry
- goaf
- calcium chloride
- loess
- water
- 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
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000002265 prevention Effects 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 36
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 36
- 239000000661 sodium alginate Substances 0.000 claims abstract description 36
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 36
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 32
- 239000007864 aqueous solution Substances 0.000 claims abstract description 29
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims abstract description 23
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims abstract description 23
- 239000010881 fly ash Substances 0.000 claims abstract description 20
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 claims abstract description 11
- 239000001110 calcium chloride Substances 0.000 claims abstract description 10
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 4
- 239000003245 coal Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract description 4
- 238000001704 evaporation Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000002347 injection Methods 0.000 description 14
- 239000007924 injection Substances 0.000 description 14
- 238000002485 combustion reaction Methods 0.000 description 8
- 230000002269 spontaneous effect Effects 0.000 description 8
- 238000003756 stirring Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 235000010410 calcium alginate Nutrition 0.000 description 4
- 239000000648 calcium alginate Substances 0.000 description 4
- 229960002681 calcium alginate Drugs 0.000 description 4
- OKHHGHGGPDJQHR-YMOPUZKJSA-L calcium;(2s,3s,4s,5s,6r)-6-[(2r,3s,4r,5s,6r)-2-carboxy-6-[(2r,3s,4r,5s,6r)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate Chemical compound [Ca+2].O[C@@H]1[C@H](O)[C@H](O)O[C@@H](C([O-])=O)[C@H]1O[C@H]1[C@@H](O)[C@@H](O)[C@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@H](O2)C([O-])=O)O)[C@H](C(O)=O)O1 OKHHGHGGPDJQHR-YMOPUZKJSA-L 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/06—Fluids used for spraying
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Building Environments (AREA)
Abstract
The invention relates to the technical field of coal mines, in particular to a secondary film covering method for fire prevention and extinguishing slurry in a goaf, which comprises the following steps: 1) preparing an aqueous solution containing sodium alginate and sodium polyacrylate; 2) preparing fly ash slurry or loess slurry by using the aqueous solution prepared in the step 1; 3) injecting the fly ash mortar or loess slurry prepared in the step 2 into the goaf; 4) injecting 5% calcium chloride solution into the goaf or spraying 20% calcium chloride solution into the goaf; 5) calcium chloride can react with sodium alginate in the slurry, and an elastic solid film with a certain thickness is formed on the surface of the slurry, and the film can slow down the evaporation of water in the slurry and keep the slurry in a wet state for a long time, so that the action effect of the slurry is prolonged, and the fire prevention and extinguishing efficiency is improved.
Description
Technical Field
The invention relates to the technical field of coal mines, in particular to a secondary film covering method for fire prevention and extinguishing slurry in a goaf.
Background
With the rapid increase of the national economic level, a large amount of shallow coal in the middle east region is consumed. With the continuous increase of mining depth and mining intensity, the pressure of coal mine enterprises for preventing safety accidents is getting bigger and bigger, a large amount of manpower, material resources and financial resources need to be invested, among various disasters, particularly, mine fires mainly caused by coal spontaneous combustion are serious, China is one of the most serious countries of coal mine natural fire, 51.3 percent of nationally important coal mines have spontaneous combustion risks, the triggering factors of the mine fires are many, such as coal spontaneous combustion, electrical short circuit and the like, wherein coal fire disasters caused by the coal spontaneous combustion account for more than 90 percent of underground fires, SO far, coal resources wasted due to the coal spontaneous combustion reach 2 tons, 1000-1360 trillion standard coals are burnt every year, the estimated economic loss reaches 200 yuan, and a large amount of toxic and harmful gases (CO, CO2, SO2 and the like) are released by fires caused by the coal spontaneous combustion, SO that people are in danger of life health and environment, and gas can be induced, The main place where coal spontaneous combustion occurs is in the goaf in the coal dust explosion accident.
The coal mine goaf is the most easily place to generate spontaneous combustion of coal, because goaf personnel can not enter, the fire prevention and extinguishing are difficult, the most common method is to inject slurry into the goaf, on one hand, the slurry injection can isolate oxygen from the coal body and block the natural oxidation process of the coal, on the other hand, the temperature of a fire area can be reduced by the evaporation and heat absorption of water in the slurry, but the water in the slurry is easy to dissipate, after the water is dissipated, the slurry is cracked, the effect of isolating oxygen cannot be achieved, and meanwhile, after the water is dissipated, the effect of evaporation and heat absorption is avoided, so the effective action time of the slurry is limited.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a secondary film covering method for fire prevention and extinguishing slurry in a goaf.
In order to solve the technical problems, the technical scheme provided by the invention is a secondary film covering method for fire prevention and extinguishing slurry in a goaf, which comprises the following steps:
1) preparing an aqueous solution containing sodium alginate and sodium polyacrylate;
2) preparing fly ash slurry or loess slurry by using the aqueous solution prepared in the step 1;
3) injecting the fly ash mortar or loess slurry prepared in the step 2 into the goaf;
4) injecting 5% calcium chloride solution into the goaf or spraying 20% calcium chloride solution into the goaf;
5) the calcium chloride reacts with the sodium alginate in the slurry to form a layer of elastic solid film with a certain thickness on the surface of the slurry.
As an improvement, in the step 1, in water with a pH value of 6.5-7.5, an aqueous solution containing 3% of sodium alginate and 1.5 per thousand of sodium polyacrylate is prepared.
As an improvement, in the step 1, in water with a pH value of 7.5-9.0, an aqueous solution containing 3% of sodium alginate and 0.5% o of sodium polyacrylate is prepared.
In the step 2, loess and the aqueous solution are prepared according to the mass ratio of 1:5 in water with the pH value of 6.5-7.5.
In the step 2, loess and the aqueous solution are prepared in a mass ratio of 1:4 in water with a pH value of 7.5-9.
As an improvement, the total amount of the calcium chloride solution injected into the goaf in the step 4 is 5% of the total amount of the fly ash mortar or loess slurry injected in the step 3.
As an improvement, the total amount of the calcium chloride solution sprayed into the goaf in the step 4 is 5% of the total amount of the injection of the fly ash mortar or loess slurry in the step 3.
Compared with the prior art, the invention has the advantages that:
the fly ash mortar or slurry is prepared by using the aqueous solution added with sodium alginate and sodium polyacrylate, and after grouting operation is finished, a calcium chloride solution is injected or sprayed, a compact calcium alginate film can be rapidly generated on the surface of the slurry, and the film can slow down the evaporation of water in the slurry, so that the slurry is kept in a wet state for a long time, the action effect of the slurry is prolonged, and the fire prevention and extinguishing efficiency is improved.
Drawings
FIG. 1 is a schematic view of a secondary coating process of fire-fighting slurry in a goaf.
Detailed Description
The secondary covering method and device for the fire-fighting slurry in the goaf are further described in detail with reference to the attached drawings.
With reference to the attached drawing 1, a goaf fire prevention and extinguishing slurry secondary film covering method and device comprises the following steps:
1) preparing an aqueous solution containing sodium alginate and sodium polyacrylate;
2) preparing fly ash slurry or loess slurry by using the aqueous solution prepared in the step 1;
3) injecting the fly ash mortar or loess slurry prepared in the step 2 into the goaf;
4) injecting 5% calcium chloride solution into the goaf or spraying 20% calcium chloride solution into the goaf;
5) the calcium chloride reacts with the sodium alginate in the slurry to form a layer of elastic solid film with a certain thickness on the surface of the slurry.
Further, in the step 1, an aqueous solution containing 3% of sodium alginate and 1.5% of sodium polyacrylate is prepared in water with a pH value of 6.5-7.5.
Further, in the step 1, an aqueous solution containing 3% of sodium alginate and 0.5% o of sodium polyacrylate is prepared in water with a pH value of 7.5-9.0.
Further, in the step 2, the loess and the aqueous solution are prepared according to the mass ratio of 1:5 in the water with the pH value of 6.5-7.5.
Further, in the step 2, the loess and the aqueous solution are prepared according to the mass ratio of 1:4 in the water with the pH value of 7.5-9.
Further, the total amount of the calcium chloride solution injected into the goaf in the step 4 is 5% of the total amount of the pulverized coal mortar or loess slurry injected in the step 3.
Further, the total amount of the calcium chloride solution sprayed into the goaf in the step 4 is 5% of the total amount of the pulverized coal mortar or loess slurry injected in the step 3.
Example one
Adding sodium alginate into water with pH of 7.2 according to the mass ratio of the sodium alginate to the water of 0.03:1, and fully stirring to completely dissolve the sodium alginate to generate a sodium alginate aqueous solution; then, according to the mass ratio of 0.0015:1 of sodium polyacrylate to water, putting sodium polyacrylate into an aqueous solution of sodium alginate, fully and uniformly stirring, then, according to the mass ratio of 1:4 of fly ash to water, putting fly ash into the prepared aqueous solution of sodium alginate and sodium polyacrylate, or according to the mass ratio of 1:5 of loess to water, putting fly ash into the prepared aqueous solution of sodium alginate and sodium polyacrylate, fully and uniformly stirring, then, injecting slurry into a goaf through a grouting pipeline, determining grouting time according to the grouting amount of the goaf, then flushing the grouting pipeline for 10 minutes by clear water, then, injecting 5% of calcium chloride solution by using the grouting pipeline, wherein the injection amount is 5% of the total injection amount of the coal powder mortar or the loess slurry in the step 3, and after injecting the calcium chloride solution, and (3) forming a compact film on the surface of the slurry, or spraying 20% of calcium chloride inhibitor into the goaf at the lower corner of the goaf, wherein the sprayed inhibitor can disperse to the whole goaf along with air leakage, the spraying amount is 5% of the total amount of the pulverized coal mortar or loess slurry injected in the step (3), and the sprayed calcium chloride water mist can also react with the slurry after contacting the slurry to form a compact calcium alginate film, so that the loss of water is effectively isolated.
Example 2
When the pH value of the water is 6, putting the vaporized furnace slag into a grinding machine for fully grinding until the particle sizes of the vaporized furnace slag reach 200 meshes or smaller, adding sodium alginate into the water with the pH value of 6 according to the mass ratio of the sodium alginate to the water of 0.03:1, and fully stirring to completely dissolve the sodium alginate to generate a sodium alginate aqueous solution; then, according to the mass ratio of 0.0015:1 of sodium polyacrylate to water, putting sodium polyacrylate into a sodium alginate aqueous solution, fully and uniformly stirring, then, according to the mass ratio of 1:3 of fly ash to water, putting fly ash into a mixture of sodium alginate/sodium polyacrylate/water, or according to the mass ratio of 1:4 of loess to water, putting fly ash into the mixture of sodium alginate/sodium polyacrylate/water, fully and uniformly stirring, injecting slurry into a goaf through a slurry injection pipeline, determining slurry injection time according to the slurry injection amount of the goaf, flushing the slurry injection pipeline for 10 minutes by using clear water, injecting 5% of calcium chloride solution by using the pipeline, wherein the injection amount is 5% of the total injection amount of the coal ash slurry or the loess slurry in the step 3, and immediately forming a layer of compact film on the surface of the slurry after the calcium chloride solution is injected, or spraying 20% of calcium chloride stopping agent into the goaf at the lower corner of the goaf, wherein the sprayed stopping agent can disperse to the whole goaf along with air leakage, the spraying amount is 5% of the total injection amount of the pulverized coal mortar or loess slurry in the step 3, and the sprayed calcium chloride water mist can also react with the slurry after contacting the slurry to form a layer of compact calcium alginate film, so that the loss of water can be effectively isolated.
Example 3
For example, when the PH of water is 9, putting the vaporized slag into a grinding machine to be fully ground until the particle sizes of the vaporized slag reach 200 meshes or less, adding sodium alginate into the water with the PH of 9 according to the mass ratio of the sodium alginate to the water of 0.03:1, and fully stirring to completely dissolve the sodium alginate to generate a sodium alginate aqueous solution; then, according to the mass ratio of sodium polyacrylate to water of 0.0005:1, sodium polyacrylate is put into sodium alginate aqueous solution, then the mixture is fully stirred, according to the mass ratio of fly ash to water of 1:3, fly ash is put into the mixture of sodium alginate/sodium polyacrylate/water, or according to the mass ratio of loess to water of 1:4, fly ash is put into the mixture of sodium alginate/sodium polyacrylate/water, the mixture is fully stirred, then slurry is injected into a goaf through a grouting pipeline, the grouting time is determined according to the grouting amount of the goaf, the grouting pipeline is flushed by clear water for 10 minutes, 5% of calcium chloride solution is injected by utilizing the pipeline, the injection amount is 5% of the total injection amount of the coal powder mortar or the loess slurry in the step 3, after the calcium chloride solution is injected, a layer of compact film is formed on the surface of the slurry immediately, or spraying 20% of calcium chloride stopping agent into the goaf at the lower corner of the goaf, wherein the sprayed stopping agent can disperse to the whole goaf along with air leakage, the spraying amount is 5% of the total injection amount of the pulverized coal mortar or loess slurry in the step 3, and the sprayed calcium chloride water mist can also react with the slurry after contacting the slurry to form a layer of compact calcium alginate film, so that the loss of water can be effectively isolated.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A secondary film covering method for fire prevention and extinguishing slurry in a goaf is characterized by comprising the following steps: the method comprises the following steps:
1) preparing an aqueous solution containing sodium alginate and sodium polyacrylate;
2) preparing fly ash slurry or loess slurry by using the aqueous solution prepared in the step 1;
3) injecting the fly ash mortar or loess slurry prepared in the step 2 into the goaf;
4) injecting 5% calcium chloride solution into the goaf or spraying 20% calcium chloride solution into the goaf;
5) the calcium chloride reacts with the sodium alginate in the slurry to form a layer of elastic solid film with a certain thickness on the surface of the slurry.
2. The goaf fire prevention and extinguishing slurry secondary film covering method according to claim 1, characterized in that: in the step 1, an aqueous solution containing 3% of sodium alginate and 1.5% of sodium polyacrylate is prepared in water with a pH value of 6.5-7.5.
3. The goaf fire prevention and extinguishing slurry secondary film covering method according to claim 1, characterized in that: in the step 1, an aqueous solution containing 3% of sodium alginate and 0.5% of sodium polyacrylate is prepared in water with a pH value of 7.5-9.0.
4. The goaf fire prevention and extinguishing slurry secondary film covering method according to claim 1, characterized in that: in the step 2, the loess and the aqueous solution are prepared according to the mass ratio of 1:5 in the water with the pH value of 6.5-7.5.
5. The goaf fire prevention and extinguishing slurry secondary film covering method according to claim 1, characterized in that: in the step 2, the loess and the aqueous solution are prepared according to the mass ratio of 1:4 in the water with the pH value of 7.5-9.
6. The goaf fire prevention and extinguishing slurry secondary film covering method according to claim 1, characterized in that: and (3) in the step (4), the total amount of the calcium chloride solution injected into the goaf by 5 percent is 5 percent of the total amount of the coal-fired mortar or loess slurry injected in the step (3).
7. The goaf fire prevention and extinguishing slurry secondary film covering method according to claim 1, characterized in that: and 4, spraying 20% of calcium chloride solution into the goaf in the step 4, wherein the total amount of the calcium chloride solution sprayed into the goaf is 5% of the total amount of the coal-fired mortar or loess slurry injected into the goaf in the step 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110248836.3A CN112814725A (en) | 2021-03-08 | 2021-03-08 | Secondary film covering method for fire-fighting prevention slurry in goaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110248836.3A CN112814725A (en) | 2021-03-08 | 2021-03-08 | Secondary film covering method for fire-fighting prevention slurry in goaf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112814725A true CN112814725A (en) | 2021-05-18 |
Family
ID=75862926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110248836.3A Pending CN112814725A (en) | 2021-03-08 | 2021-03-08 | Secondary film covering method for fire-fighting prevention slurry in goaf |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112814725A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114276818A (en) * | 2021-11-26 | 2022-04-05 | 淮北矿业股份有限公司 | Slurry material for preventing spontaneous combustion and ignition of residual coal in goaf and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102526921A (en) * | 2011-12-27 | 2012-07-04 | 煤炭科学研究总院 | Novel coal ash grouting material |
| CN104056383A (en) * | 2014-06-22 | 2014-09-24 | 许盛英 | Volcanic ash mesh gel foam mud fire prevention and extinguishing agent |
| CN109701198A (en) * | 2019-01-10 | 2019-05-03 | 北京理工大学 | A kind of instant-matching type can natural degradation Sodium Alginate Hydrogel Films extinguishing chemical and its application method |
| CN110124245A (en) * | 2019-06-04 | 2019-08-16 | 北京理工大学 | Foam Sodium Alginate Hydrogel Films and preparation method thereof, extinguishing device |
| CN111282187A (en) * | 2020-03-12 | 2020-06-16 | 祁海强 | Instant-prepared sodium alginate hydrogel fire extinguishing agent and preparation method thereof |
-
2021
- 2021-03-08 CN CN202110248836.3A patent/CN112814725A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102526921A (en) * | 2011-12-27 | 2012-07-04 | 煤炭科学研究总院 | Novel coal ash grouting material |
| CN104056383A (en) * | 2014-06-22 | 2014-09-24 | 许盛英 | Volcanic ash mesh gel foam mud fire prevention and extinguishing agent |
| CN109701198A (en) * | 2019-01-10 | 2019-05-03 | 北京理工大学 | A kind of instant-matching type can natural degradation Sodium Alginate Hydrogel Films extinguishing chemical and its application method |
| CN110124245A (en) * | 2019-06-04 | 2019-08-16 | 北京理工大学 | Foam Sodium Alginate Hydrogel Films and preparation method thereof, extinguishing device |
| CN111282187A (en) * | 2020-03-12 | 2020-06-16 | 祁海强 | Instant-prepared sodium alginate hydrogel fire extinguishing agent and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114276818A (en) * | 2021-11-26 | 2022-04-05 | 淮北矿业股份有限公司 | Slurry material for preventing spontaneous combustion and ignition of residual coal in goaf and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101793160B (en) | Environment-friendly flame-retardant high-molecular gel inhibitor for preventing coal from spontaneously combusting of coal mine | |
| CN107308583B (en) | Mining fire extinguishing material additive and application thereof | |
| CN104001298A (en) | Extinguishment composition, purpose of extinguishment composition and extinguishment method | |
| CA2872360C (en) | Method for preparing inhibition slurry containing pulverized fuel ash for controlling fire in coal fields | |
| CN110256033B (en) | High-porosity foam for spontaneous combustion control of coal in goaf and preparation method thereof | |
| CN101787289B (en) | Method for preparing fireproof and explosion suppression pulverized fuel ash carbon dioxide material | |
| CN112814725A (en) | Secondary film covering method for fire-fighting prevention slurry in goaf | |
| KR101333651B1 (en) | Chemicals for improvement of coal burning | |
| CN112282832A (en) | Mining coal spontaneous combustion prevention inhibition foam foaming agent and preparation method thereof | |
| CN106267671B (en) | Fireproof and fire-extinguishing composite material for coal mine or coal gangue dump and preparation method thereof | |
| CN106288992A (en) | Application process for the environmental chemistry coalescence agent of surface mine explosion | |
| Liu et al. | Management of spontaneous combustion in coal mine waste tips in China | |
| Zhou et al. | Practice of fighting fire and suppressing explosion for a super-large and highly gassy mine | |
| CN109758709B (en) | Inhibition foam fire prevention and extinguishing material and use method thereof | |
| CN115089908B (en) | Gangue-based fire prevention and extinguishment three-phase foam material, preparation method and application | |
| CN109758711A (en) | A kind of fireproofing extinguishing materials and application method of temperature sensitive dynamic release carbon dioxide | |
| CN114470600B (en) | Foam gel fire prevention and extinguishing material | |
| CN110433444B (en) | Mine fireproof fire extinguishing material and preparation method thereof | |
| CN112439156A (en) | Foam fire prevention and extinguishing material and preparation method and application thereof | |
| CN109289148A (en) | A kind of underground coal mine fire-prevention extinguishing agent and preparation method thereof | |
| SU867323A3 (en) | Agent for preventing coal self-ignition | |
| CN113683348A (en) | Inorganic fire prevention and extinguishing filling material and preparation method thereof | |
| CN103224349B (en) | Cracked dose of mining static state and using method | |
| Hartmann | Studies on the Development and Control of Coal-dust Explosions in Mines | |
| Haigang et al. | Comprehensive prevention and control technology of coal spontaneous combustion on roof cutting and retained roadway in stopping line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |