CN115614088A - Inorganic fire-proof agent and its use method - Google Patents
Inorganic fire-proof agent and its use method Download PDFInfo
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- CN115614088A CN115614088A CN202211116484.7A CN202211116484A CN115614088A CN 115614088 A CN115614088 A CN 115614088A CN 202211116484 A CN202211116484 A CN 202211116484A CN 115614088 A CN115614088 A CN 115614088A
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- extinguishing agent
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 230000002265 prevention Effects 0.000 claims abstract description 40
- 239000002002 slurry Substances 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000004567 concrete Substances 0.000 claims abstract description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000005187 foaming Methods 0.000 claims abstract description 5
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 4
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims description 75
- 239000000463 material Substances 0.000 claims description 68
- 239000003245 coal Substances 0.000 claims description 28
- 238000010276 construction Methods 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 238000000227 grinding Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 8
- 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 description 7
- 229910021538 borax Inorganic materials 0.000 claims description 7
- 239000010883 coal ash Substances 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 7
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 claims description 7
- 239000012784 inorganic fiber Substances 0.000 claims description 7
- 229910052903 pyrophyllite Inorganic materials 0.000 claims description 7
- 239000004328 sodium tetraborate Substances 0.000 claims description 7
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 235000010413 sodium alginate Nutrition 0.000 claims description 5
- 239000000661 sodium alginate Substances 0.000 claims description 5
- 229940005550 sodium alginate Drugs 0.000 claims description 5
- 239000000176 sodium gluconate Substances 0.000 claims description 5
- 229940005574 sodium gluconate Drugs 0.000 claims description 5
- 235000012207 sodium gluconate Nutrition 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 230000009191 jumping Effects 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 230000003449 preventive effect Effects 0.000 claims 2
- 239000004254 Ammonium phosphate Substances 0.000 claims 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims 1
- 235000019289 ammonium phosphates Nutrition 0.000 claims 1
- 230000000295 complement effect Effects 0.000 claims 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims 1
- BRPNNYXZQLLLSN-UHFFFAOYSA-N sodium;dodecane Chemical compound [Na+].CCCCCCCCCCC[CH2-] BRPNNYXZQLLLSN-UHFFFAOYSA-N 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 229910003471 inorganic composite material Inorganic materials 0.000 abstract description 2
- 238000004537 pulping Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 8
- 230000002269 spontaneous effect Effects 0.000 description 8
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N ammonium phosphates Chemical compound [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 239000006260 foam Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241000219122 Cucurbita Species 0.000 description 1
- 235000009852 Cucurbita pepo Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- -1 yellow chart Substances 0.000 description 1
Images
Classifications
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- 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)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to an inorganic fire prevention and extinguishing agent and a using method thereof, the inorganic fire prevention and extinguishing agent is an environment-friendly inorganic composite material, is in a powder shape, and is prepared by mixing the inorganic fire prevention and extinguishing agent and water according to the weight ratio of 1: 10-18 are mixed and stirred to prepare a colloidal slurry, and then the colloidal slurry is injected into a gob through a grouting pump connected with a foaming controller and nitrogen or carbon dioxide through a pipeline to achieve the purpose of fire prevention and extinguishing, when the inorganic fire prevention and extinguishing agent is used, the inorganic fire prevention and extinguishing agent is matched with PS3U-TB and PS5U-TB wet concrete sprayers for use, no chemical reaction occurs, no heat is generated, no harm is caused to human bodies in the using process, the pulping process is simple, the operation is convenient, the pipeline is not blocked, the slurry is colloidal, and the slurry has fluidity under certain external force; high fire extinguishing speed, high safety and no corrosion to underground equipment.
Description
Technical Field
The invention belongs to the technical field of coal mine fire prevention and extinguishing, and particularly relates to an inorganic fire prevention and extinguishing agent and a using method thereof.
Background
Coal spontaneous combustion is one of major disasters threatening the safety of coal mines and coal transportation, and the main reason is that coal and oxygen in the air generate oxidation-reduction reaction and generate a large amount of heat, and if the heat released by the oxidation reaction cannot be effectively dissipated, the heat is continuously accumulated, so that the temperature of the coal body rises until spontaneous combustion occurs. According to statistics, the number of mines with natural fire risks in key coal mines in China is about 51.3%, the number of fires caused by spontaneous combustion is more than 90% of the total number of fires, gas and coal dust explosion accidents caused by spontaneous combustion fires of the mines occur occasionally, the life and property safety of people are seriously threatened, the sustainable development of the coal industry is hindered, the social stability is influenced, and the indirect loss caused by the accidents is difficult to estimate, such as pollution of land resources and atmosphere to the natural ecological environment, human activities and the like. Therefore, coal fire prevention and control work is a difficult task faced by coal safety production.
The current coal mine fire prevention and extinguishing investment can be divided into a plurality of main parts: 1. in the mine construction period, according to the regulations of coal mine safety regulations and related design specifications, a grouting system is required to be constructed for mining a mine with easy spontaneous combustion and spontaneous combustion coal beds;
2. in recent years, a fully mechanized top coal caving process is mostly adopted in newly built large mines, and a nitrogen injection system is designed according to regulations revised in recent years and regulations of regulations;
3. the investment for fire prevention in the mining process of the mine is mainly the daily use and maintenance cost of the fire prevention and extinguishing system, including various fire prevention and extinguishing technical measures, materials and engineering cost;
4. the associated costs of fire fighting projects in the event of severe spontaneous combustion. Loess, a fire prevention and extinguishing material commonly used in coal mines in the past, is limited by geographical environment conditions and yellow mud grouting, and has a very limited fire prevention and extinguishing effect on steeply inclined coal seams.
In recent years, a plurality of alternative grouting materials and grouting additive materials are developed, such as gels, stopping agents, water glass fertilizers, three-phase foams and the like; the price cost of each material is not cheap when in use, other related costs are not calculated, the use has many limitations, the comprehensive effect is not satisfactory, the comprehensive fire prevention and extinguishing cost is continuously increased in spontaneous combustion mines in China at present, and the work center of gravity treatment is far greater than prevention.
Disclosure of Invention
The invention aims to solve the problems, and provides an inorganic fire prevention and extinguishing agent and a using method thereof, which do not generate chemical reaction and heat and are harmless to human bodies in the using process and are mainly used for treating harmful gas in a goaf when the opening, withdrawal and stoping propulsion speed of an underground fully mechanized mining face is low. The inorganic fire prevention and extinguishing machine has simple process and convenient operation.
In order to achieve the purpose, the invention provides the following technical scheme: the inorganic fire prevention and extinguishing agent comprises 15-20 parts of sodium tetraborate, sodium gluconate, sodium dodecyl sulfate, pyrophyllite, coal ash, ammonium phosphate salt, inorganic fiber, coal gangue powder and sodium alginate, wherein the sodium tetraborate, the sodium gluconate, the sodium dodecyl sulfate, the pyrophyllite, the coal ash, the ammonium phosphate salt, the inorganic fiber, the coal gangue powder and the sodium alginate form the inorganic fire prevention and extinguishing agent, and 10-20 parts of the sodium tetraborate, 10-20 parts of the sodium gluconate, 10-15 parts of the sodium dodecyl sulfate, 10-15 parts of the pyrophyllite, 10-15 parts of the coal ash, 5-10 parts of the ammonium phosphate salt, 5-10 parts of the inorganic fiber, 5-10 parts of the coal gangue powder and 5 parts of the sodium alginate.
The use method of the inorganic fire prevention and extinguishing agent comprises the following steps of mixing the inorganic fire prevention and extinguishing agent with water according to a ratio of 1: 10-18 are mixed and stirred to prepare a glue body slurry, and then the slurry is injected into a goaf through a grouting pump connected with a foaming controller and nitrogen or carbon dioxide through a pipeline to achieve the purpose of fire prevention and extinguishing, when in use, the inorganic fire prevention and extinguishing agent is matched with PS3U-TB and PS5U-TB wet concrete spraying machines for use, and the concrete construction steps are as follows:
s1, preparation and sequence of construction
a. Preparing tools required during construction;
b. laying a wind and water pipeline of a construction site, and arranging a switch and a cable facility;
c. designing the spraying thickness of a spraying machine;
s2, checking machine
a. Draining water in the air-water separator of the jet machine;
b. checking whether sundries remain in the hopper;
c. checking circuit, wind path, material conveying pipeline, water source, who has fault;
d. loosening the compression screw on the combination plate, removing the arc-shaped plate, and checking whether the rubber combination plate and the rotating plate are corroded and adhered tightly;
e. after the newly installed rubber combination plates are adjusted by the compression screws, whether the combination plates are compact, uniform and gapless is checked;
s3, injection test run of inorganic fire-extinguishing agent
a. Before the inching test operation, the grinding sheet pressing device needs to be loosened and cannot be pressed; the grinding sheet pressing device is started to test running, whether the rotating direction of the rotating body is the same as the direction of an indicated arrow is checked, and after the rotating direction is the same as the direction of the indicated arrow, the grinding sheet pressing device is stopped to press the grinding sheet pressing device;
b. opening an air inlet valve, presetting starting air pressure according to the length of a material conveying pipe, blowing a pipeline for 2-3 minutes by using compressed air, and starting a motor;
c. after the inspection confirms that the materials are normal, the machine can be started to transport the materials;
s4, spraying the operation sequence and the attention points of the inorganic fire prevention and extinguishing agent
a. Starting up: boiling water, supplying air, starting a motor and feeding materials;
b. stopping the machine: stopping feeding, stopping power, stopping wind and stopping water;
c. the machine is prevented from being reversely operated, the machine parts are damaged, material blocking accidents occur, the screen is strictly dismantled and loaded, and machine blockage is avoided;
d. the slurry firstly enters the spraying machine through the sieve, the height of the slurry in the hopper is not less than half of the height of the hopper in the spraying process, the slurry is uniformly and continuously fed, and the storage time of the slurry in the spraying machine is not more than 2 hours;
e. when the material conveying pipeline is blocked, the working pressure rises and approaches the pressure of an air source, the material conveying is immediately stopped, and power, air and water are cut off for treatment;
f. paying attention to the running condition and the communication signal of the spraying machine, monitoring the feeding condition and keeping normal running;
g. when the slurry is sprayed out of the material conveying pipe, whether the working pressure is suitable or not is observed, if the material conveying pipe has larger pulse jumping, a large main air inlet valve can be slightly opened so as to improve the working pressure, the material flow is stable, the spraying thickness is achieved once according to the design requirement, and the secondary spraying needs to be timely removed when the dry spots, looseness, falling, slippage or cracks on the surface of the material are found in the spraying process; when the metal net is hung, no rib is exposed on the surface of the material; when the falling materials are found to be caught by the metal net rack, the materials need to be removed in time for secondary spraying; proper operation of the eductor can affect rebound, material compaction, and material flow uniformity.
Further: the inorganic fire-extinguishing agent is an environment-friendly composite material and is in a powder shape.
Further: the pipelines are inter-frame buried pipes, walking buried pipes and high-position grouting pipelines.
Further: the spraying thickness of the spraying machine in the step S1 is 50-60 mm.
Further: the inner layer of the inorganic fire-proof agent product package is a plastic bag, the outer layer is a woven bag or a heat-seal plastic woven bag, the net weight of each package is 25kg or 40kg, the product is lightly carried in the transportation, loading and unloading processes to prevent the package from being damaged, and the effective period of the unopened product package is more than or equal to 36 months under the condition of drying in the shade.
Compared with the prior art, the invention has the beneficial effects that:
the inorganic fire prevention and extinguishing agent is an environment-friendly inorganic composite material, is in a powder shape, is directly mixed and stirred with water according to a predetermined proportion to form a glue body slurry for use, and has high foaming multiplying power, long foam stabilizing time and high foam viscosity; the foam does not absorb water after being slowly broken, absorbs heat and reduces temperature, has good water-fixing property and is not easy to run off; and the coal body is in a wet state for a long time, covers the surface of the coal rock body and blocks cracks, so that air leakage of the goaf is prevented.
When the slurry is matched with a spraying machine for use, no chemical reaction occurs, no heat is generated, no harm is caused to a human body, the pulping process is simple, the operation is convenient, a pipeline is not blocked, the slurry is colloidal, and the slurry has fluidity under certain external force; the fire extinguishing speed is high, the safety is good, and the underground equipment is not corroded.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, it is obvious that the drawings in the description are only for more clearly illustrating the embodiments of the present invention or the technical solutions in the prior art, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a ground grouting process of the present invention;
FIG. 2 is a schematic view of the structure of the inter-frame buried pipe of the present invention;
FIG. 3 is a schematic view of the walking type pipe laying structure of the present invention;
fig. 4 is a schematic view of a high-level grouting management structure.
Detailed Description
In order to make the technical solutions of the present invention better understood and implemented by those skilled in the art, the present invention is further described with reference to the following specific examples, which are provided for illustration only and are not intended to limit the present invention.
The inorganic fire-extinguishing agent is an inorganic spraying material which is specially developed and produced for matching with PS3U-TB and PS5U-TB wet concrete spraying machines, and the inorganic spraying material and the wet concrete spraying machines must be matched for use to fully exert the design characteristics and the material performance of a spraying machine so as to meet the requirements of spraying. The inorganic fire-extinguishing agent is a spraying mortar used for mining, tunnel, bridge and road and mountain reinforcing and repairing. The spraying principle is as follows: the aggregate and other raw materials are uniformly stirred according to a certain proportion, then are loaded into a spraying machine, the dry aggregate is pressed and conveyed to a spray gun in a suspension state in a hose by using compressed air, and then are mixed with high-pressure water at a nozzle and sprayed onto the rock surface at a high speed.
The inorganic fire prevention and extinguishing agent comprises sodium tetraborate, sodium gluconate, sodium dodecyl sulfate, pyrophyllite, coal ash, ammonium phosphate salt, inorganic fibers, coal gangue powder and sodium alginate, wherein the sodium tetraborate, the sodium dodecyl sulfate, the pyrophyllite, the coal ash, the ammonium phosphate salt, the inorganic fibers, the coal gangue powder and the sodium alginate form 15 to 20 parts of the inorganic fire prevention and extinguishing agent, 10 to 15 parts of the sodium tetraborate, 10 to 15 parts of the pyrophyllite, 10 to 15 parts of the coal ash, 5 to 10 parts of the ammonium phosphate salt, 5 to 10 parts of the inorganic fibers, 5 to 10 parts of the coal gangue powder and 5 parts of the sodium alginate, and the inorganic fire prevention and extinguishing agent is prepared after being mixed in a storage bag.
As shown in fig. 1: the use method of the inorganic fire prevention and extinguishing agent comprises the following steps of mixing the inorganic fire prevention and extinguishing agent with water according to a ratio of 1: 10-18 are mixed and stirred to prepare a cementing body slurry, a grouting pump connected with a foaming controller and nitrogen or carbon dioxide are injected into a goaf through pipelines to achieve the purpose of fire prevention and extinguishing, the pipelines are inter-frame buried pipes, stepping buried pipes and high-position grouting pipelines, the structure diagrams of the pipelines are shown in figures 2, 3 and 4, when the mortar is used, an inorganic fire prevention and extinguishing agent is matched with PS3U-TB and PS5U-TB wet concrete sprayers for use, and the concrete construction steps are as follows:
s1, preparation and sequence of construction
a. Preparing tools required during construction;
b. laying a wind-water pipeline of a construction site, and arranging a switch and a cable facility;
c. designing the spraying thickness of a spraying machine;
s2, checking machine
a. Draining water in the air-water separator of the jet machine;
b. checking whether sundries remain in the hopper;
c. checking the circuit, the air path, the material conveying pipeline, the water source and the person who has the fault;
d. loosening the compression screw on the combination plate, removing the arc-shaped plate, and checking whether the rubber combination plate and the rotating plate are corroded and adhered tightly;
e. after the newly installed rubber combination plates are adjusted by the compression screws, whether the combination plates are compact, uniform and gapless is checked;
s3, injection test run of inorganic fire-extinguishing agent
a. Before the inching test run, the grinding sheet pressing device needs to be loosened and cannot be pressed; the grinding sheet pressing device is started to test running, whether the rotating direction of the rotating body is the same as the direction of an indicated arrow is checked, and after the rotating direction is the same as the direction of the indicated arrow, the grinding sheet pressing device is stopped to press the grinding sheet pressing device;
b. opening an air inlet valve, presetting starting air pressure according to the length of a material conveying pipe, blowing a pipeline for 2-3 minutes by using compressed air, and starting a motor;
c. after the inspection confirms that the materials are normal, the machine can be started to transport the materials;
s4, spraying the operation sequence and the attention points of the inorganic fire prevention and extinguishing agent
a. Starting up: boiling water, supplying air, starting a motor and feeding materials;
b. stopping the machine: stopping feeding, then stopping power supply, stopping wind, and finally stopping water supply;
c. the machine is prevented from being reversely operated, the machine parts are damaged, material blocking accidents occur, the screen is strictly dismantled and loaded, and machine blockage is avoided;
d. the slurry enters an injection machine through airing, the slurry in a hopper is not lower than half of the height of the hopper in the injection process, the slurry is uniformly and continuously fed, and the storage time of the slurry in the injection machine is not more than 2 hours;
e. when a material conveying pipeline is blocked, the working pressure rises and approaches to the pressure of an air source, the material conveying is immediately stopped, and power, air and water are cut off for treatment;
f. paying attention to the running condition of the spraying machine and the communication signal, monitoring the feeding condition and keeping normal running;
g. when the slurry is sprayed out of the material conveying pipe, observing whether the working pressure is suitable, if too much rebound, indicating that the working pressure is too high; if the adhesive force of the sprayed layer is insufficient, the working pressure is too low, and the working pressure needs to be adjusted in time according to signals sent from a working place; if the conveying pipe has larger pulse bounce, a main air inlet valve can be slightly opened to improve the working pressure, so that the material flow is stable, the spraying thickness is achieved once per design requirement, and the supplementary spraying needs to be timely removed when the surface of the material is dry, loose, falls, slides or cracks during spraying; when the metal net is hung, no rib is exposed on the surface of the material; when the falling materials are found to be caught by the metal net rack, the materials need to be removed in time for secondary spraying; proper operation of the eductor can affect rebound, compaction of the material, and uniformity of the material flow.
Parts cleaned per shift of the machine:
a. blowing off the excess materials in the material cavity of the rotary body and the material conveying pipe by using compressed air, and cleaning dust outside the machine body;
b. disassembling the elbow of the discharge pipe, and removing the adhesive of the rubber combination plate and the rotating body;
c. the seat body is disassembled, and residual ash accumulated in the seat body is removed.
Safety measures for guniting operations
a. Before guniting, the rock wall of the sprayed surface is thoroughly washed by compressed air and high-pressure water, the initial spraying thickness is 50-60mm, the re-spraying thickness meets the design requirement, and the rock surface is still washed by high-pressure water before re-spraying.
b. Before the guniting machine is used, the guniting machine is comprehensively checked, problems are found and timely treated, and the guniting machine is operated by a specially-assigned person. When the faults of mechanical and electrical equipment are processed, the electricity and compressed air of the upper-stage switching power supply are cut off, and people nearby need to be informed to pay attention and avoid before air supply and power transmission so as to prevent accidents.
c. The sealing performance of the guniting machine is kept good, air leakage and dust flying are prevented, a material collecting pipe, a reducing gourd pipe and a double-water ring are additionally arranged on the nozzle, so that water and materials are fully mixed, and the conveying pipe is required to bend in a large radius to prevent the pipe from being blocked.
d. The dust-settling equipment and the spraying facility are started before spraying, a spraying hand is matched with two persons, the person holds a gun to spray, the person assists in lighting and is responsible for communication, a top plate and the spraying condition are observed to ensure the spraying quality and safety, the gun head needs to use single-stranded 12# iron wires for secondary protection, the body part of the person is strictly forbidden, and the person is strictly forbidden in the swinging range of the gun head.
e. The personnel feeding the shotcrete machine should stand at a place with a flat bottom plate and a safe top plate, and impurities nearby should be cleaned.
f. Distance from nozzle to ejection surface: spraying the top 0.8-1 m and spraying the wall 0.6-0.8 m; the air pressure is 0.4-0.5 MPa, the air pressure at the nozzle is kept at 0.1-0.18 MPa, the water pressure at the nozzle is 0.1MPa greater than the air pressure, the jetting angle is mastered by a jetting worker, the nozzle strives to be vertical to a rock surface, the jetting angle is preferably 10-15 degrees downward when the nozzle is used for jetting a wall, the minimum elevation angle is 65 degrees when the nozzle is used for jetting a top, the moving mode of the nozzle generally adopts a spiral track and rotates clockwise, the nozzle moves forwards uniformly and slowly by one circle and one half circle, the diameter of the spiral is about 30 cm, point shooting is avoided, and the surface is required to be smooth. When the crack is in a low recess, the crack is sprayed and filled firstly and then is sprayed normally; when large water spray occurs, a guide pipe is inserted into a crack where the water spray is concentrated to guide water, the crack is in a concentric circle shape when sprayed, the crack is sprayed from the edge to the center, and an accelerator can be properly added. The minimum design thickness of the spraying is not less than 50mm, the spraying thickness of one time is recommended to be 60-70mm according to the side wall spraying thickness, and the spraying thickness of the vault part is recommended to be 50-60mm; when the layered spraying is carried out, the rear layer spraying is carried out after the final setting of the front layer concrete, and if the spraying is carried out after the final setting for 1 hour, the surface of the sprayed layer is cleaned by wind and water.
g. The spraying is carried out in sections, each section is about 2m long, the spraying is carried out in a section according to a certain sequence, namely, the spraying is carried out after the spraying is carried out on the wall, the spraying is carried out after the spraying is carried out on the arch, and the spraying is carried out after the spraying is carried out on the wall; when the sectional spraying is carried out, the joint of two adjacent sections is made into an oblique joint, and the overlapping length of the oblique joint is twice of the spraying thickness.
h. The long-distance conveying pipe used in an inclined drift or a roadway needs to be periodically rotated to ensure that the conveying pipe is uniformly worn, the phenomena of thin abrasion and breakdown at the conveying pipe and a discharge elbow are frequently checked in operation, and the problems are timely treated.
i. When the blocked injection pipeline is treated, other people are forbidden in front of the injection port and nearby the injection port, so that people are prevented from being injured by sudden injection and pipeline jumping; when the pipeline is dredged, a knocking method is adopted for treatment, and feeding, stopping and stopping wind are needed. If the pressure wind is adopted for blowing, the injector head is firmly and reliably fixed on fixed objects such as a shed and a seedling pole, the control wind pressure is gradually increased from small to small, and the working wind pressure of the injector head cannot exceed 0.4MPa.
j. And 4 hours after the slurry is sprayed, spraying water to maintain the slurry once every small shift, wherein the maintaining time is not less than 7 days.
The inorganic fire-extinguishing agent is matched with an injection machine for use, has low rebound rate, compact injection layer, good homogeneity, high strength, even slurry coating and good surface forming, adopts bagged injection materials to directly feed, does not need manual proportioning and mixing (solving the problems of uneven proportioning and mixing, ensuring the slurry spraying quality), is waterproof, anti-freezing and anti-icing salt, does not contain chloride, and can be applied on the side and the top. The performance indexes of the invention are shown in table 1:
TABLE 1 Performance index of inorganic fire-extinguishing agent
| Item | Unit | Numerical value |
| 1d compressive strength | MPa | ≥8 |
| 3d compressive strength | MPa | ≥15 |
| 7d compressive strength | MPa | ≥25 |
| 28d compressive strength | MPa | ≥30 |
| Setting time | min | 5-10 |
| Particle size | mm | 0-5 |
| Wet density | kg/m3 | About 2000-2200 |
| Construction temperature | ℃ | 5-35 |
| Water to cement ratio | About 0.16-0.0.20 | |
| Yield (wet mortar/dry powder) | L/kg | 19/40 |
| Consumption of | kg/m2/mm, i.e. t/m3 | About 2 |
Storage and transportation of the invention
(1) The inner layer of the product package is a plastic bag, the outer layer of the product package is a woven bag package (manual package) or a heat-sealing plastic woven bag (machine package), and the net weight of each package is 25kg and 40kg.
(2) The products should be lightly moved during transportation, loading and unloading to prevent package damage.
(3) The product is stored for 6 months without being opened under the condition of shade and drying.
The inorganic fire-proof agent of the invention is used in the environment
The coal mine is used for preventing and extinguishing fire, and open fire is directly extinguished;
technical parameters and requirements
1. The fire-proof agent material can be mixed with materials such as yellow chart, fly ash and the like for use, the content of inorganic compounds is more than or equal to 90 percent, and the fire-proof agent material has an inspection report issued by the national coal and coalification product quality supervision and inspection center;
2. solid-liquid ratio 1: more than 20, the viscosity coefficient (Pa.S) of the prepared slurry is more than or equal to 1500, the passing rate of a 200-mesh vibrating screen is more than or equal to 99.5 percent, and the slurry does not precipitate or delaminate within 30 days;
3. water gas is not generated under the conditions of high temperature and open fire;
4. the material is non-toxic and non-corrosive, has no safety threat to the environment, does not generate heat and toxic and harmful gas, and has an inspection report issued by the national coal and coalification product quality supervision and inspection center;
5. the product has a shelf life of not less than 36 months.
The structure and use of the PS3U-TB and PS5U-TB wet concrete spraying machines are well established in the prior art, and the use in combination with the inorganic fire-fighting agent of the present invention is easily achieved.
All the matters which are not described in detail in the present invention are prior art.
The foregoing is only a preferred embodiment of the present invention and is not limited to the description and implementation. All equivalent changes or modifications of the structure, characteristics and principles described in the patent claims of the present invention should be included in the patent claims of the present invention.
Claims (6)
1. The inorganic fire prevention and extinguishing agent is characterized in that: the fire-fighting agent comprises 15-20 parts of sodium tetraborate, 10-20 parts of sodium gluconate, 10-15 parts of dodecyl sodium, 10-15 parts of pyrophyllite, 10-15 parts of coal ash, 5-10 parts of ammonium phosphate, 5-10 parts of inorganic fiber, 5-10 parts of coal gangue powder and 5 parts of sodium alginate.
2. The use method of the inorganic fire preventive agent according to claim 1, characterized in that: mixing an inorganic fire-proof agent and water according to the ratio of 1: 10-18 are mixed and stirred to prepare a glue body slurry, and then the slurry is injected into a goaf through a grouting pump connected with a foaming controller and nitrogen or carbon dioxide through a pipeline to achieve the purpose of fire prevention and extinguishing, when in use, the inorganic fire prevention and extinguishing agent is matched with PS3U-TB and PS5U-TB wet concrete spraying machines for use, and the concrete construction steps are as follows:
s1, preparation and sequence of construction
a. Preparing tools required during construction;
b. laying a wind-water pipeline of a construction site, and arranging a switch and a cable facility;
c. designing the spraying thickness of a spraying machine;
s2, checking machine
a. Draining water in the air-water separator of the jet machine;
b. checking whether sundries remain in the hopper;
c. checking whether the circuit, the air path, the material conveying pipeline, the water source and the water ring have faults or not;
d. loosening the compression screw on the combination plate, removing the arc-shaped plate, and checking whether the rubber combination plate and the rotating plate are corroded and adhered tightly;
e. after the newly installed rubber combination plates are adjusted by the compression screws, whether the combination plates are compact, uniform and gapless is checked;
s3, injection test run of inorganic fire-extinguishing agent
a. Before the inching test run, the grinding sheet pressing device needs to be loosened and cannot be pressed; the grinding sheet pressing device is stopped to press the grinding sheet pressing device after the rotating body is turned to the same direction as the direction of the indicated arrow;
b. opening an air inlet valve, presetting starting air pressure according to the length of a material conveying pipe, blowing a pipeline for 2-3 minutes by using compressed air, and starting a motor;
c. after the inspection confirms that the materials are normal, the machine can be started to transport the materials;
s4, operation sequence and notice of spraying inorganic fire prevention and extinguishing agent
a. Starting up: boiling water, supplying air, starting a motor and feeding materials;
b. stopping the machine: stopping feeding, stopping power, stopping wind and stopping water;
c. the machine parts are prevented from being damaged and material blocking accidents are avoided due to reverse operation, the screen is strictly dismantled and loaded, and machine blockage is avoided;
d. the slurry firstly enters the spraying machine through the sieve, the height of the slurry in the hopper is not less than half of the height of the hopper in the spraying process, the slurry is uniformly and continuously fed, and the storage time of the slurry in the spraying machine is not more than 2 hours;
e. when the material conveying pipeline is blocked, the working pressure rises and approaches the pressure of an air source, the material conveying is immediately stopped, and power, air and water are cut off for treatment;
f. paying attention to the running condition and the communication signal of the spraying machine, monitoring the feeding condition and keeping normal running;
g. when the slurry is sprayed out of the material conveying pipe, whether the working pressure is suitable or not is observed, if the material conveying pipe has larger pulse jumping, a large main air inlet valve can be slightly opened so as to improve the working pressure, the material flow is stable, the spraying thickness is achieved once according to the design requirement, and the complementary spraying needs to be timely removed when dry spots, looseness, falling, slippage or cracks on the surface of the material are found in the spraying process; when the metal net is hung, no rib is exposed on the surface of the material; when the falling materials are found to be caught by the metal net rack, the materials need to be removed in time for secondary spraying; proper operation of the eductor can affect rebound, compaction of the material, and uniformity of the material flow.
3. The inorganic fire preventive and extinguishing agent according to claim 1, characterized in that: the inorganic fire-extinguishing agent is an environment-friendly composite material and is in a powder shape.
4. The use method of the inorganic fire prevention and extinguishing agent according to claim 2, characterized in that: the pipelines are inter-frame buried pipes, walking buried pipes and high-position grouting pipelines.
5. The use method of the inorganic fire-extinguishing agent according to claim 2, characterized in that: the spraying thickness of the sprayer in the step S1 is 50-60 mm.
6. The inorganic fire preventing and extinguishing agent according to claim 1, characterized in that: the inner layer of the inorganic fire-proof agent product package is a plastic bag, the outer layer is a woven bag or a heat-seal plastic woven bag, the net weight of each package is 25kg or 40kg, the product is lightly carried in the transportation, loading and unloading processes to prevent the package from being damaged, and the effective period of the unopened product package is more than or equal to 36 months under the condition of drying in the shade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211116484.7A CN115614088A (en) | 2022-09-14 | 2022-09-14 | Inorganic fire-proof agent and its use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211116484.7A CN115614088A (en) | 2022-09-14 | 2022-09-14 | Inorganic fire-proof agent and its use method |
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| Publication Number | Publication Date |
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|---|---|---|---|
| CN202211116484.7A Pending CN115614088A (en) | 2022-09-14 | 2022-09-14 | Inorganic fire-proof agent and its use method |
Country Status (1)
| Country | Link |
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| CN (1) | CN115614088A (en) |
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Application publication date: 20230117 |