CN102114316A - Fire proofing and extinguishing agent composite for mine and preparation and use method thereof - Google Patents
Fire proofing and extinguishing agent composite for mine and preparation and use method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of mine waste treatment and fire prevention, relating to a fire proofing and extinguishing agent composite for a mine and a preparation and use method thereof. The fire proofing and extinguishing agent composite comprises the following components in percentage by weight: 1.0-6.0wt% of glass fibre substance, 3.0-6.0wt% of lime, 3.5-6.0wt% of loess, 3.1-6.2wt% of coal ash, 0.01-0.03wt% of binding agent, 0.01-0.03wt% of water-retaining agent, 0.002-0.013wt% of dispersing agent and 80-90wt% of water. The fire proofing and extinguishing agent is non-toxic, harmless and safe to use and has the advantages of adjustable proportion, high inhibition rate and better inhibition performance. The slurry is easy to flow under the wet state and is in solid net body state after being dried, and the slurry has stronger impermeable plugging function; grouting equipment has strong adaptability, professional grouting equipment is adopted, and spraying and planting equipment can be used for construction. The slurry has big adjustable range of activity period and can be adjusted within 1-30 hours.
Description
Technical field
The invention belongs to the mine discarded object and administer and the fire prevention field, relate to a kind of fire-prevention extinguishing agent composition and preparation and using method.
Background technology
Gangue is the solid waste that a kind of phosphorus content is low, ash content is high of discharging in coal mining and the process, accounts for 10%～15% of coal production.A large amount of discharges of gangue form hillock, not only take valuable land resource, destroy natural landscape, but also spontaneous combustion can take place, severe contamination mining area atmospheric environment, infringement health.The control spontaneous combustion of coal gangue hill is a very urgent task of current coal industry one.
Spontaneous combus tion of waste heap is a kind of more special combustion system, can be divided into spontaneous combustion incubation period, spontaneous combustion period of expansion and spontaneous combustion three types tailend.It and general fire have very big difference, and be very slow and hidden as the development of combustion process, and the transfer in fire district is by the flame or propagations of glowing, and perhaps air-flow is propagated, easy resume combustion etc.Need to adopt special anti-fire extinguishing engineering.
Prevention or the fundamental way of extinguishing the spontaneous combustion hillock are to remove fuel, cooling and oxygen barrier.The main method of available technology adopting has: eliminate the combustible method 1.; 2 foam methodes; 3. covering method; 4. excavate the burning things which may cause a fire disaster method; 5. water flood; 6. slip casting method etc.Wherein slip casting method is considered to effective method.It is in the combustion zone punching, with the alkaline slurry that contain soil of Grouting Pipe to deep or superficial part injection solid concentration 15%, relies on the parcel oxygen barrier effect of evaporation of water cooling and material, reaches the purpose of preventing or extinguishing the spontaneous combustion spoil.
The material that slip casting is adopted is generally loess, rock leaf, spoil, flyash, mine tailing etc., after adding water after the grain refined and being prepared into slurries, relends and helps the strength of machinery to be pressed into hillock inside, allows slurry infiltration be filled in the space of spoil.But difficulty is big in the practical operation, and the fire extinguishing effect is far unsatisfactory.Mainly there is following problem:
1) slip casting is to block air and reach the fire extinguishing effect with the water evaporates cooling with hole, gap nearby, gravity flow infiltration shutoff combustion zone.Because the slurries solids content is low, the easily heavy slurry of particle is assembled, and influences slip casting and puts in place.
2) the injecting paste material moisture is big, easily produces a large amount of steam, and the imflammable gas that the dry distillation of coal produces can increase, and can bring out more gangue oxidation simultaneously.
3) after the slip casting along with the evaporation of moisture, the slurries aggregate is difficult to form closely knit plugged zone continuously, easily forms the passage that leaks out, and influence oxygen barrier effect or the resume combustion of initiation gangue.
Summary of the invention
The object of the present invention is to provide that a kind of efficient height, cost are low, environmental protection, water-saving fireproofing extinguishing materials, can overcome that existing extinguish material slurries solids content is low, the easily heavy slurry of particle is assembled, the imflammable gas that the dry distillation of coal produces brings out more gangue oxidation and the slurries aggregate is difficult to form closely knit plugged zone continuously, easily form the passage that leaks out, influence the oxygen barrier effect or cause the gangue resume combustion etc. defective, be applied to the mine discarded object and administer engineering.
For achieving the above object, principle of the present invention is to be target to cut off disconnected oxygen, is means with the hole and the gap of shutoff gangue massif, adopts professed machine equipment to spray the comprehensive shutoff of slip casting, play the fire fire extinguishing, do not had the fire fire prevention, the effect that the fire prevention fire extinguishing takes into account.
A kind of mining fire-prevention extinguishing agent composition, raw material are formed mass percent and are:
1. glass fibre class is as anti-guncotton packing material, fibre length＜6mm, 1.0%～3.0%
2. lime is advisable 3.0%～6.0% with desulfurization lime
3. loess (two class loess, sand content＜10%), 3.5%～6.1%
4. inert particulate (flyash), 3.1%～6.2%
5. binder (acrylamide), 0.01%～0.03%
6. water-loss reducer (SAP-super absorbent resin Super Absorbed Polymer, 500 times of water absorption rates), 0.01%～0.03%
7. dispersant (silica) 0.002%～0.013%
8. water (mine recycled water) 80%～90%.
Configuration technology:
1. solid material is sieved, fineness is controlled at below the 2mm; The material that fineness is excessive needs to re-use after fragmentation, the screening.
2. press material proportion, each material component of weighing.
3. the mining water of water filling in agitator tank will be prevented earlier being stirred to abundant infiltration in the guncotton adding jar, add two class loess, flyash and desulfurization lime then respectively, stir 20～30 minutes;
4. again each component material such as remaining acrylamide gel, water-loss reducer, silica is added agitator, stirred 10～30 minutes, allow slurry form even and abundant suspended state.
Using method:
1. press the degree of depth and the density requirements of work planning design, administer operation area boring at coal gangue hill in advance, drilling rod is special perforate drilling rod.
2. the drilling rod that reaches projected depth is reserved in administers the operation area;
3. the equipment that slip casting special equipment or function are close is connected with drilling rod by pressure hose, and slurry perfusion is arrived in the spoil layer.Grouting pressure 0.5～0.8MPa, flow 1～2m
3/ h, the time: till when the aperture occur to continue anti-stream.
4. during operation, but the slip casting simultaneously of single tube or multitube has been annotated until whole drilling rods.
5. looking cooling fire extinguishing effect and determining whether supplementary irrigation, pulling out drilling rod after reaching designing requirement.
Inventive principle:
The fire-prevention extinguishing agent composition is made up of the mixture of optimizing, and resistance voltinism energy is high, filming performance is good.During use, after the mixture pressure pump Grouting Pipe, earlier near the burning things which may cause a fire disaster surface cooling inlet, and the diffusion of blocking-up oxygen, stop and continue oxidation heat liberation, reduce the coal body internal temperature, under the effect of pressure, colloid slowly enlarges the intensity of a fire and extinguishes circle by being on the point of radiation diffusion towards periphery subsequently.Because composition wraps up coal body rapidly, the toxic and harmful that oxidation of coal produces can not overflowed.Slurries are done the back and are formed netted, airtight, resistant to elevated temperatures inorganic thin film.Inorganic thin film is iron comburant surface tightly, and itself and air and burning things which may cause a fire disaster are isolated, and plays quick extinguishing, prevents resume combustion.For the gangue of spontaneous combustion not, then play the effect of prevention spontaneous combustion.
Technical measures
1. optimize the composition of mixed slurry, strengthen slurry viscosity, after entering the spoil massif, wrap up coal body rapidly, reduce the oxidation activity of coal, the coal temperature is reduced rapidly, and prevent that the high humility oxidation from heating the formation of line.
2. improve the concentration of slurries, after the sclerosis, the density height strengthens buffer action, and can reduce water consumption.
3. the granularity of control slurry aggregate might enter in the tiny gap it, forms more closely knit integument.
4. make the solid powder in the slurries keep suspended state before spraying application to the comburant surface, not sedimentation can be brought into play the effect of evaporation of liquid absorbing and cooling temperature like this, can reach the purpose that solids hides fire extinguishing again;
5. the increase fiber forms netted, airtight, resistant to elevated temperatures inorganic thin film so that slurries are done the back.The inorganic thin film good toughness, anti-cracking performance is strong, and parcel, plugging effect is good and lasting.
6. increase the flowability (being lubricity) of slurries, prevent to mix fibrous caking when stirring, reduce the current resistance in the mobile process of mixed serum, make slurries arrive hole and gap rapidly.
7. adopt the grouting mode of high pressure, low discharge.Shutoff pulp jets pressure is big, impacts osmotic effect and obviously strengthens.
Products characteristics
1. novel fire-prevention extinguishing agent composition is nontoxic, harmless, safe in utilization, can not impact working environment and workers ' health.
2. proportioning is adjustable.Can be configured according to the residing type of gangue, basic structure and peripheral geographical situation, technology is simple, and is easy to operate, and proportioning is accurate, and labour intensity is little, the reliability height.
3. the resistance rate height of fire-prevention extinguishing agent composition has and hinders the voltinism energy preferably.
4. slurry is easy to flow under wet condition, does the back and becomes solid-state dictyosome shape, has stronger antiseepage shutoff function.
5. grouting equipment adaptability is strong.Available professional grouting equipment, the also available equipment of sowing grass seeds by duster is constructed.
6. the active phase of slurry transfers scope big, can adjust in the scope at 1～30 hour.
Specific implementation method
Embodiment 1
Be used to administer the A type fire-prevention extinguishing agent composition of spontaneous combustion coal gangue hill incubation period, mixture ratio is as follows:
1. anti-guncotton packing material, 120 parts
2. desulfurization lime, 300 parts
3. two class loess, 350 parts
4. flyash, 310 parts
5. acrylamide gel, 1 part
6. water-loss reducer, 1 part
7. silica, 0.3 part
8. water, 9000 parts
Configuration technology:
1. solid material is sieved, fineness is controlled at below the 2mm; The material that fineness is excessive needs to re-use after fragmentation, the screening.
2. press material proportion, each material component of weighing.
3. 9000 parts of mining water of water filling in agitator tank will be prevented earlier being stirred to abundant infiltration in the guncotton adding jar, add two class loess, flyash and desulfurization lime then respectively, stir 20～30 minutes;
4. again each component material such as remaining acrylamide gel, water-loss reducer, silica is added agitator, stirred 10～30 minutes, allow slurry form even and abundant suspended state.
Using method:
1. press the degree of depth and the density requirements of work planning design, administer operation area boring at coal gangue hill in advance, drilling rod is special perforate drilling rod.
2. the drilling rod that reaches projected depth is reserved in administers the operation area;
3. the equipment that slip casting special equipment or function are close is connected with drilling rod by pressure hose, and slurry perfusion is arrived in the spoil layer.Grouting pressure 0.5～0.8MPa, flow 1～2m
3/ h, the time: till when the aperture occur to continue anti-stream.
4. during operation, but the slip casting simultaneously of single tube or multitube has been annotated until whole drilling rods.
5. looking cooling fire extinguishing effect and determining whether supplementary irrigation, pulling out drilling rod after reaching designing requirement.
Embodiment 2
Be used to administer the Type B fire-prevention extinguishing agent composition of spontaneous combustion period of expansion coal gangue hill, mixture ratio is as follows:
1. anti-guncotton packing material, 150 parts
2. desulfurization lime, 330 parts
3. two class loess, 360 parts
4. flyash, 350 parts
5. acrylamide gel, 1.5 parts
6. water-loss reducer, 2 parts
7. silica is 0.15 part
8. water, 7000 parts
Configuration technology:
1. solid material is sieved, fineness is controlled at below the 2mm; The material that fineness is excessive needs to re-use after fragmentation, the screening.
2. press material proportion, each material component of weighing.
3. 7000 parts of mining water of water filling in agitator tank will be prevented earlier being stirred to abundant infiltration in the guncotton adding jar, add two class loess, flyash and desulfurization lime then respectively, stir 20～30 minutes;
4. again each component material such as remaining acrylamide gel, water-loss reducer, silica is added agitator, stirred 10～30 minutes, allow slurry form even and abundant suspended state.
Using method:
1. press the degree of depth and the density requirements of work planning design, administer operation area boring at coal gangue hill in advance, drilling rod is special perforate drilling rod.
2. the drilling rod that reaches projected depth is reserved in administers the operation area;
3. the equipment that slip casting special equipment or function are close is connected with drilling rod by pressure hose, and slurry perfusion is arrived in the spoil layer.Grouting pressure 0.5～0.8MPa, flow 1～2m
3/ h, the time: till when the aperture occur to continue anti-stream.
4. during operation, but the slip casting simultaneously of single tube or multitube has been annotated until whole drilling rods.
5. looking cooling fire extinguishing effect and determining whether supplementary irrigation, pulling out drilling rod after reaching designing requirement.
Embodiment 3
Be used to administer the C type fire-prevention extinguishing agent composition of spontaneous combustion coal gangue hill tailend, mixture ratio is as follows:
1. anti-guncotton packing material, 180 parts
2. desulfurization lime, 350 parts
3. two class loess, 380 parts
4. flyash, 370 parts
5. acrylamide gel, 2 parts
6. water-loss reducer, 1.9 parts
7. silica, 0.8 part
8. water, 5000 parts
Configuration technology:
1. solid material is sieved, fineness is controlled at below the 2mm; The material that fineness is excessive needs to re-use after fragmentation, the screening.
2. press material proportion, each material component of weighing.
3. 5000 parts of mining water of water filling in agitator tank will be prevented earlier being stirred to abundant infiltration in the guncotton adding jar, add two class loess, flyash and desulfurization lime then respectively, stir 20～30 minutes;
4. again each component material such as remaining acrylamide gel, water-loss reducer, silica is added agitator, stirred 10～30 minutes, allow slurry form even and abundant suspended state.
Using method:
1. press the degree of depth and the density requirements of work planning design, administer operation area boring at coal gangue hill in advance, drilling rod is special perforate drilling rod.
2. the drilling rod that reaches projected depth is reserved in administers the operation area;
3. the equipment that slip casting special equipment or function are close is connected with drilling rod by pressure hose, and slurry perfusion is arrived in the spoil layer.Grouting pressure 0.5～0.8MPa, flow 1～2m
3/ h, the time: till when the aperture occur to continue anti-stream.
4. during operation, but the slip casting simultaneously of single tube or multitube has been annotated until whole drilling rods.
5. looking cooling fire extinguishing effect and determining whether supplementary irrigation, pulling out drilling rod after reaching designing requirement.
Claims (4)
1. mining fire-prevention extinguishing agent composition is characterized in that raw material forms mass percent and be:
1). glass fibre class material, 1.0%～3.0%,
2). lime, 3.0%～6.0%,
3). loess, 3.5%～6.1%,
4). flyash, 3.1%～6.2%,
5). binder, 0.01%～0.03%,
6). water-loss reducer, 0.01%～0.03%,
7). dispersant 0.002%～0.013%
8). water 80%～90%.
2. a kind of mining fire-prevention extinguishing agent composition as claimed in claim 1 is characterized in that the glass fibre material is anti-guncotton packing material, fibre length＜6mm; Lime is desulfurization lime; Loess is two class loess of sand content＜10%; Binder is an acrylamide; Water-loss reducer is the super absorbent resin of 500 times of water absorption rates; Dispersant is a silica; Water is the mine recycled water.
3. a kind of mining fire-prevention extinguishing agent preparation of compositions method as claimed in claim 2 is characterized in that:
1). solid material is sieved, and fineness is controlled at below the 2mm; The material that fineness is excessive needs to re-use after fragmentation, the screening;
2). press material proportion, each material component of weighing.
3). water filling mine recycled water in agitator tank, will prevent earlier being stirred to abundant infiltration in the guncotton adding jar, add two class loess, flyash and desulfurization lime then respectively, stirred 20～30 minutes;
4). more remaining acrylamide, water-loss reducer, each component material of silica are added agitator, stirred 10～30 minutes, allow slurry form even and abundant suspended state.
By the described a kind of mining fire-prevention extinguishing agent preparation of compositions method of claim 3 prepare all and be the using method of the slurry of suspended state, it is characterized in that:
1). press the degree of depth and the density requirements of work planning design, administer operation area boring at coal gangue hill in advance, drilling rod is the perforate drilling rod;
2). the drilling rod that reaches projected depth is reserved in administers the operation area;
3). the equipment that slip casting special equipment or function are close is connected with drilling rod by pressure hose, and slurry perfusion is arrived in the spoil layer; Grouting pressure 0.5～0.8MPa, flow 1～2m
3/ h, the time: till when the aperture occur to continue anti-stream;
4). during operation, menu pipe or multitube slip casting have been annotated until whole drilling rods;
5). looking cooling fire extinguishing effect and determining whether supplementary irrigation, pulling out drilling rod after reaching designing requirement.
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| CN2010106178283A CN102114316B (en) | 2010-12-22 | 2010-12-22 | Fire proofing and extinguishing agent composite for mine and preparation and use method thereof |
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| CN2010106178283A CN102114316B (en) | 2010-12-22 | 2010-12-22 | Fire proofing and extinguishing agent composite for mine and preparation and use method thereof |
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| CN102114316A true CN102114316A (en) | 2011-07-06 |
| CN102114316B CN102114316B (en) | 2012-07-25 |
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