CN103867225B - A kind ofly prevent colliery from containing spontaneous combustion of coal seam and remove the filling exploitation method of hydrogen sulfide - Google Patents
A kind ofly prevent colliery from containing spontaneous combustion of coal seam and remove the filling exploitation method of hydrogen sulfide Download PDFInfo
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- CN103867225B CN103867225B CN201410115684.XA CN201410115684A CN103867225B CN 103867225 B CN103867225 B CN 103867225B CN 201410115684 A CN201410115684 A CN 201410115684A CN 103867225 B CN103867225 B CN 103867225B
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Abstract
The invention belongs to coal mining security fields, be specifically related to a kind ofly prevent colliery from containing spontaneous combustion of coal seam and remove the filling exploitation method of hydrogen sulfide.The present invention is at excavation air intake lane, distance seat earth 1-1.5m place and return airway, according to exploiting field condition, the mining width in lane and the mining width of gob side entry retaining are filled in design, coal-winning machine is adopted to exploit filling lane, after every one deck back production is complete, on coal seam, spray the liquid foam having and remove hydrogen sulfide and anti-flaming function immediately, then adopt filling slurry to carry out filling to goaf, filling lane.The present invention effectively prevents pernicious gas to the infringement of personnel and blast in recovery process, and cracking reduces intensity after preventing filler consolidation, improve the rate of extraction, improve production efficiency twice laid and reduce cost of winning, be particularly useful for thicker and hydrogen sulfide gas overflows comparatively multiple seam.
Description
Technical field
The invention belongs to coal mining security fields, be specifically related to a kind ofly prevent colliery from containing spontaneous combustion of coal seam and remove the filling exploitation method of hydrogen sulfide.
Background technology
For a long time, there is several large problem in the exploitation of coal resources all the time: one is have a large amount of toxic gas in seam mining, such as hydrogen sulfide and explosive, and two is that surface settlement control effect is undesirable, and three is that coal seam working section recovery is lower.
The Main Means that hydrogen sulfide removed by current mine has: set up independently ventilation system dilution or extraction hydrogen sulfide, inculcate or spray hydrogen sulfide absorption solution.First kind of way is undesirable for the goaf effect that hydrogen sulfide content is larger, and second way liquid-absorbant injects apart from short, and spray and affect comparatively greatly by space layout, liquid not easily retains in gap, goaf, easily flows away, and stabilization time is short, and loss amount is large.
In addition, control ground settlement and open delay filling cementing material mainly through local, and partial mining adopts filling lane and gob side entry retaining to arrange at present, but stay lane mining width to be generally less than filling lane mining width, cause the rate of extraction low, and filler mostly is cement at present, spoil, flyash, the mixed materials such as magnesium powder (expansion agent), owing to widely applying its cost of cement higher, and easily ftracture under ground pressure impact after filler consolidation, surface settlement control is limited, especially under building and railway, still there will be larger depression, have a strong impact on mining area surface installation security.
Summary of the invention
For the deficiencies in the prior art, the invention provides and a kind ofly prevent colliery from containing spontaneous combustion of coal seam and remove the filling exploitation method of hydrogen sulfide, object is in recovery process, effectively prevent pernicious gas to the infringement of personnel and blast, and cracking reduces intensity after preventing filler consolidation, improve the rate of extraction, improve production efficiency twice laid and reduce cost of winning, be particularly useful for thicker and hydrogen sulfide gas overflows comparatively multiple seam.
The technical scheme realizing the object of the invention is carried out according to following steps:
(1) at excavation air intake lane, distance seat earth 1-1.5m place and return airway, described air intake lane and return airway be arranged in parallel, article two, the one end in tunnel is connected with work plane, the other end respectively lane total with air intake is connected with the total lane of return air, in air intake lane and the total lane of air intake, the connecting place in return airway and the total lane of return air lays connection roadway, this connection roadway is vertical with return airway with air intake lane, and is provided with air damper in connection roadway, forms exploiting field air intake exhaust system;
(2) according to exploiting field condition, the mining width in lane and the mining width of gob side entry retaining are filled in design, and the mining width of wherein filling lane is greater than the mining width of gob side entry retaining, and is preferably less than the mining width of 1.2 times of gob side entry retainings;
(3) adopt coal-winning machine to exploit filling lane, coal seam across pitch is divided some sections, and each section divides some layers according to thickness, from top to bottom slicing, and same layering adopts drawing back, and coal-winning machine cutting falls ore deposit, adopts fortune shovel ore removal;
(4) every one deck back production complete after, on coal seam, spray the liquid foam having and remove hydrogen sulfide and anti-flaming function immediately, the described liquid foam removing hydrogen sulfide and anti-flaming function that has is made up of hydrogen sulfide alkaline absorbent, inorganic salts retardant, composite foamable agent, auxiliary agent and water;
Then adopt filling slurry to carry out filling to goaf, filling lane, described filling slurry is made up of slag, useless fiber, water glass, kaolin, gypsum and water, and wherein proportioning is slag: 460-500kg/m
3, useless fiber: 3-6kg/m
3, water glass: 0.2-0.6kg/m
3, kaolin: 0.6-1kg/m
3, gypsum: 20-60kg/m
3, water: 950-1100kg/m
3, the 24h intensity>=2Mpa of slip, 28 days final strength>=18.6Mpa;
When filling, adopt hydraulic pump that filling slurry is pumped into pipeline, and by pipeline, slag filling slurry is delivered to fill area, until complete the filling to this filling bed;
(5) repeat step (4) and carry out lower floor's exploitation, sprinkling and filling, until filling lane is exploited with filling complete completely, when the exploitation of all filling lanes, also filling is complete, according to the mining sequence identical with step (3), adopt development machine separate zone production gob side entry retaining, every one deck exploitation terminates to carry out spraying and filling according to step (4) method, until gob side entry retaining filling is complete.
Described hydrogen sulfide alkaline absorbent accounts for the 0.5-60% of liquid foam gross mass, and one or more specifically in sodium carbonate, potash, sodium acid carbonate, saleratus, calcium bicarbonate, NaOH, potassium hydroxide, calcium hydroxide, calcium oxide, zinc oxide are with the mixture of arbitrary proportion mixing, described inorganic salts retardant accounts for the 0.5-60% of liquid foam gross mass, and one or more specifically in magnesium chloride, calcium chloride, zinc chloride, sodium chloride, sodium carbonate, potash, magnesium carbonate, sodium sulphate, zinc sulfate, calcium sulfate, KBr, calcium bromide are with the mixture of arbitrary proportion mixing, described composite foamable agent is Anionic-nonionic surfactant compound system, accounts for the 0.1-35% of liquid foam gross mass, and wherein anion surfactant is sodium sulfate of polyethenoxy ether of fatty alcohol, Φ-ester sodium sulfonate, sodium alkylsulfosuccinates, acyl group oxygen alkyl sulfonic acid sodium, acyl methylamine alkane sulfonic acid sodium, lauramide SES, urine methylene nail polish acid amides, N-acyl group-N alkyl taurine sodium, ethoxymer distribution is the ethoxylated dodecyl alcohol sodium sulfovinate of 2-4, containing the sodium alkyl benzene sulfonate of 10-14 carbon atom, containing the a-alkene sulfonic acid sodium of 14-16 carbon atom, containing the sodium alkyl sulfate of 12-18 carbon atom, one or more in fatty alcohol ether sulfosuccinate disodium salt are with the mixture of arbitrary proportion mixing, and account for the 40-99.5% of composite foamable agent quality, non-ionic surface active agent is fatty acid ester is the polyoxyethylate amide of 1:2 with the ratio of diethanol amine amount of substance, polyoxyethylene alkyl amine, ether sulfate, APEO, laureth ammonium sulfate, coconut oil diethanol amide, silicones polyethers emulsion, alkylolamides, anhydrous sorbitol list Palmitate, one or more in fatty acyl alkanolamine, with the mixture of arbitrary proportion mixing, account for the 0.5-60% of composite foamable agent quality, described auxiliary agent accounts for the 0-15% of liquid foam gross mass, specifically foam stabiliser, solubilizer, wetting agent and antifreeze, one or more mixtures mixed with arbitrary proportion in the polyoxyethylate amide that described foam stabiliser is modification polyanion cellulose, sodium carboxymethylcellulose, AEO, fatty acid ester and the ratio of diethanol amine amount of substance are 1:1, polyacrylamide, Cocoamidopropyl betaine, OA-12, account for the 0.5-50% of auxiliary agent quality, solubilizer is one or more mixtures mixed with arbitrary proportion in Tween-20, Tween-40, urea, glycerine, pentaerythrite, isopropyl sodium sulfonate, polyoxyethylene polypropylene block type polyethers, sorbierite, anhydrous sorbitol, AEO mono succinate sodium sulfonate, accounts for the 0-50% of auxiliary agent quality, wetting agent is one or both mixtures mixed with arbitrary proportion in diisopropyl sodium naphthalene sulfonate, nekal, accounts for the 0-50% of auxiliary agent quality, antifreeze is one or both mixtures mixed with arbitrary proportion in ethanol, ethylene glycol, accounts for the 0-50% of auxiliary agent quality, described water accounts for the 5-90% of liquid foam gross mass.
The preparation method of described filling slurry is:
By water and useless fiber, slag and gypsum mix and blend 15min, then add water glass and kaolin and continue stir and form filling slurry, filling slurry proportioning is slag: 460-500kg/m
3, useless fiber: 3-6kg/m
3, water glass: 0.2-0.6kg/m
3, kaolin: 0.6-1kg/m
3, gypsum: 20-60kg/m
3, water: 950-1100kg/m
3, the 24h intensity>=2Mpa of the filling slurry finally obtained, 28 days final strength>=18.6Mpa.
Compared with prior art, feature of the present invention and beneficial effect are:
The mining width of filling lane in the present invention is set to be greater than the mining width of gob side entry retaining and the mining width being less than 1.2 times of gob side entry retainings can improve the rate of extraction further;
The present invention by adding useless fiber in filler, can prevent filler body from ftractureing, increase its ductility, and twice laid, the intensity stabilization of filler can be ensured, adopt slag to replace cement simultaneously, replace the expansion agents such as magnesium powder of the prior art with kaolin, Bound moisture glass and gypsum, can reduce costs in guaranteed strength simultaneously further;
After the back production of the present invention's every one deck is complete, the liquid foam having and remove hydrogen sulfide and anti-flaming function is sprayed immediately on coal seam, liquid foam injects distance, stabilization time is long, loss amount is little, utilization rate is high, than inculcating and spraying hydrogen sulfide absorption solution and spontaneous combustionof coal resistanceization solution efficacy is good, liquid foam can be filled in rock crevice, can wind leaking stoppage, reduce oxygen content, prevent spontaneous combustionof coal, the liquid viscosity formed after broken bubble is large, coal surface can be sticked to, play oxygen barrier, the effect of cooling, also spontaneous combustionof coal can be prevented, the liquid foam adopted, select cost low, environmental protection, free of contamination alkaline absorbent and inorganic salts retardant, underground coal mine pernicious gas hydrogen sulfide can be removed, spontaneous combustionof coal can be prevented again.
Accompanying drawing explanation
Fig. 1 is that exploitation tunnel schematic diagram is filled in coal seam;
Wherein: 1: return airway; 2: air intake lane; 3: gob side entry retaining; 4: connection roadway; 5: the total lane of air intake; 6: the total lane of return air; 7: fill lane.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of the present invention is described further:
In embodiment, in colliery, each formation parameters is: coal seam thickness 3.5-4.5 rice, average 4 meters, 8 °-11 °, inclination angle, average out to 9 °, base plate is for containing charcoal mud stone, thickness 0.8 meter, top board is sandstone thickness is 3.6 meters, it is 10 meters that lane mining width is filled in design, and gob side entry retaining mining width is 9 meters, and the two interval is arranged.
Embodiment
Prevent colliery from containing spontaneous combustion of coal seam and remove the filling exploitation method of hydrogen sulfide, concrete steps are:
(1) at excavation air intake lane 2, distance seat earth 1-1.5m place and return airway 1, described air intake lane 2 be arranged in parallel with return airway 1, article two, the one end in tunnel is connected with work plane, the other end respectively lane 5 total with air intake is connected with the total lane 6 of return air, connection roadway 4 is laid with the connecting place in the total lane 6 of return air in air intake lane 2 and the total lane of air intake 5, return airway 1, this connection roadway 4 is vertical with return airway 1 with air intake lane 2, and is provided with air damper in connection roadway 4, forms exploiting field air intake exhaust system;
(2) according to exploiting field condition, the mining width in lane 7 and the mining width of gob side entry retaining 3 are filled in design, and the mining width of wherein filling lane 7 is greater than the mining width of gob side entry retaining 3, and is preferably less than the mining width of 1.2 times of gob side entry retainings 3;
(3) adopt coal-winning machine to exploit filling lane 7, coal seam across pitch is divided some sections, and each section divides some layers according to thickness, from top to bottom slicing, and same layering adopts drawing back, and coal-winning machine cutting falls ore deposit, adopts fortune shovel ore removal;
(4) every one deck back production complete after, on coal seam, spray the liquid foam having and remove hydrogen sulfide and anti-flaming function immediately, the described liquid foam removing hydrogen sulfide and anti-flaming function that has is made up of hydrogen sulfide alkaline absorbent, inorganic salts retardant, composite foamable agent, auxiliary agent and water;
Described hydrogen sulfide alkaline absorbent accounts for 20% of liquid foam gross mass, is the mixture of sodium carbonate and potash; Described inorganic salts retardant accounts for 30% of liquid foam gross mass, specifically the mixture of magnesium chloride and calcium chloride; Described composite foamable agent is Anionic-nonionic surfactant compound system, account for 10% of liquid foam gross mass, wherein anion surfactant is sodium sulfate of polyethenoxy ether of fatty alcohol, account for 40% of composite foamable agent quality, non-ionic surface active agent is fatty acid ester is the polyoxyethylate amide of 1:2 with the ratio of diethanol amine amount of substance, accounts for 60% of composite foamable agent quality; Described auxiliary agent accounts for 1% of liquid foam gross mass, specifically foam stabiliser, solubilizer, wetting agent and antifreeze, described foam stabiliser is that modification polyanion cellulose accounts for 0.5% of auxiliary agent quality, solubilizer is the mixture of Tween-20 and Tween-40, account for 50% of auxiliary agent quality, wetting agent is the mixture of the mixing in diisopropyl sodium naphthalene sulfonate and nekal, accounts for 10% of auxiliary agent quality; Antifreeze is the mixture in ethanol and ethylene glycol, accounts for 39.5% of auxiliary agent quality; Described water accounts for 39% of liquid foam gross mass;
Then adopt filling slurry to carry out filling to goaf, filling lane, described filling slurry is made up of slag, useless fiber, water glass, kaolin, gypsum and water, and wherein proportioning is slag: 460-500kg/m
3, useless fiber: 3-6kg/m
3, water glass: 0.2-0.6kg/m
3, kaolin: 0.6-1kg/m
3, gypsum: 20-60kg/m
3, water: 950-1100kg/m
3, the 24h intensity>=2Mpa of slip, 28 days final strength>=18.6Mpa; Described useless fiber comprises the textile raw materials such as discarded non-woven fabrics.
When filling, adopt hydraulic pump that filling slurry is pumped into pipeline, and by pipeline, slag filling slurry is delivered to fill area, until complete the filling to this filling bed;
(5) repeat step (4) and carry out lower floor's exploitation, sprinkling and filling, until filling lane 7 is exploited completely and filling is complete, when all filling lanes 7 are exploited also, filling is complete, according to the mining sequence identical with step (3), adopt development machine separate zone production gob side entry retaining 3, every one deck exploitation terminates to carry out spraying and filling according to step (4) method, until gob side entry retaining 3 filling is complete.
After adopting said method construction, hydrogen sulfide gas absorptivity reaches 92-95%, and is examined by apparent over the ground, and earth's surface year settling amount is all less than 10mm, and do not cause the every infrastructure in mining area to be destroyed, and the rate of extraction improves 20%, cost reduces about 10%.
Embodiment 2
Embodiment 2 is identical with other steps of embodiment 1, difference is described to have in the liquid foam removing hydrogen sulfide and anti-flaming function, hydrogen sulfide alkaline absorbent is sodium acid carbonate, the mixture of saleratus and calcium bicarbonate, account for 0.5% of liquid foam gross mass, inorganic salts retardant is the mixture of zinc chloride and sodium chloride, account for 20% of liquid foam gross mass, described composite foamable agent is Anionic-nonionic surfactant compound system, account for 35% of liquid foam gross mass, wherein anion surfactant is the mixture of Φ-ester sodium sulfonate and sodium alkylsulfosuccinates, account for 60% of composite foamable agent quality, non-ionic surface active agent is the mixture of polyoxyethylene alkyl amine and ether sulfate, account for 40% of composite foamable agent quality, described auxiliary agent accounts for 15% of liquid foam gross mass, specifically foam stabiliser, solubilizer, wetting agent and antifreeze, described foam stabiliser is the mixture of sodium carboxymethylcellulose and AEO, account for 0.5% of auxiliary agent quality, solubilizer is urea, accounts for 25% of auxiliary agent quality, and wetting agent is diisopropyl sodium naphthalene sulfonate, accounts for 25% of auxiliary agent quality, and antifreeze is ethanol, accounts for 49.5% of auxiliary agent quality, and described water accounts for 29.5% of liquid foam gross mass.
Embodiment 3
Embodiment 3 is identical with other steps of embodiment 1, difference is described to have in the liquid foam removing hydrogen sulfide and anti-flaming function, hydrogen sulfide alkaline absorbent is NaOH, account for 60% of liquid foam gross mass, described inorganic salts retardant is sodium carbonate, account for 10% of liquid foam gross mass, described composite foamable agent is Anionic-nonionic surfactant compound system, account for 0.1% of liquid foam gross mass, wherein anion surfactant is acyl group oxygen alkyl sulfonic acid sodium, account for 99.5% of composite foamable agent quality, non-ionic surface active agent is the mixture of APEO and laureth ammonium sulfate, account for 0.5% of composite foamable agent quality, described auxiliary agent accounts for 5% of liquid foam gross mass, specifically foam stabiliser and solubilizer, described foam stabiliser is fatty acid ester is the polyoxyethylate amide of 1:1 with the ratio of diethanol amine amount of substance, account for 50% of auxiliary agent quality, solubilizer is the mixture of glycerine and pentaerythrite, account for 50% of auxiliary agent quality, described water accounts for 24.9% of liquid foam gross mass.
Embodiment 4
Embodiment 4 is identical with other steps of embodiment 1, difference is described to have in the liquid foam removing hydrogen sulfide and anti-flaming function, hydrogen sulfide alkaline absorbent is the mixture of potassium hydroxide and calcium hydroxide, account for 10% of liquid foam gross mass, inorganic salts retardant accounts for 0.5% of liquid foam gross mass, specifically potash, magnesium carbonate, the mixture of sodium sulphate and zinc sulfate, described composite foamable agent is Anionic-nonionic surfactant compound system, account for 35% of liquid foam gross mass, wherein anion surfactant is the mixture of acyl methylamine alkane sulfonic acid sodium and lauramide SES, account for 50% of composite foamable agent quality, non-ionic surface active agent is coconut oil diethanol amide, account for 50% of composite foamable agent quality, described auxiliary agent accounts for 15% of liquid foam gross mass, specifically foam stabiliser and solubilizer, and described foam stabiliser is polyacrylamide, accounts for 50% of auxiliary agent quality, solubilizer is isopropyl sodium sulfonate, accounts for 50% of auxiliary agent quality, and described water accounts for 39.5% of liquid foam gross mass.
Embodiment 5
Embodiment 5 is identical with other steps of embodiment 1, difference is described to have in the liquid foam removing hydrogen sulfide and anti-flaming function, hydrogen sulfide alkaline absorbent accounts for 1.5% of liquid foam gross mass, specifically calcium oxide, inorganic salts retardant accounts for 60% of liquid foam gross mass, specifically calcium sulfate, described composite foamable agent is Anionic-nonionic surfactant compound system, account for 20% of liquid foam gross mass, wherein anion surfactant is the mixture of urine methylene nail polish acid amides and N-acyl group-N alkyl taurine sodium, account for 80% of composite foamable agent quality, non-ionic surface active agent is silicones polyethers emulsion, account for 20% of composite foamable agent quality, described auxiliary agent accounts for 5.5% of liquid foam gross mass, specifically foam stabiliser, solubilizer, wetting agent and antifreeze, described foam stabiliser is Cocoamidopropyl betaine, account for 50% of auxiliary agent quality, solubilizer is polyoxyethylene polypropylene block type polyethers, account for 50% of auxiliary agent quality, described water accounts for 13% of liquid foam gross mass.
Embodiment 6
Embodiment 6 is identical with other steps of embodiment 1, difference is described to have in the liquid foam removing hydrogen sulfide and anti-flaming function, hydrogen sulfide alkaline absorbent accounts for 2.5% of liquid foam gross mass, specifically zinc oxide, described inorganic salts retardant accounts for 2.5% of liquid foam gross mass, specifically KBr, described composite foamable agent is Anionic-nonionic surfactant compound system, account for 1% of liquid foam gross mass, the wherein ethoxylated dodecyl alcohol sodium sulfovinate of anion surfactant to be ethoxymer distribution be 2-4, account for 50% of composite foamable agent quality, non-ionic surface active agent is alkylolamides, account for 50% of composite foamable agent quality, described auxiliary agent accounts for 4% of liquid foam gross mass, specifically foam stabiliser and solubilizer, and described foam stabiliser is OA-12, accounts for 50% of auxiliary agent quality, solubilizer is the mixture of sorbierite and anhydrous sorbitol, accounts for 50% of auxiliary agent quality, described water accounts for 90% of liquid foam gross mass.
Embodiment 7
Embodiment 7 is identical with other steps of embodiment 1, difference is described to have in the liquid foam removing hydrogen sulfide and anti-flaming function, hydrogen sulfide alkaline absorbent is potash, account for 60% of liquid foam gross mass, described inorganic salts retardant accounts for 30% of liquid foam gross mass, specifically calcium bromide, described composite foamable agent is Anionic-nonionic surfactant compound system, account for 2.5% of liquid foam gross mass, wherein anion surfactant is the mixture of the sodium alkyl benzene sulfonate containing 10-14 carbon atom and the a-alkene sulfonic acid sodium containing 14-16 carbon atom, account for 40% of composite foamable agent quality, non-ionic surface active agent is anhydrous sorbitol list Palmitate, account for 60% of composite foamable agent quality, described auxiliary agent accounts for 2.5% of liquid foam gross mass, specifically foam stabiliser and solubilizer, and described foam stabiliser is OA-12, accounts for 50% of auxiliary agent quality, solubilizer is AEO mono succinate sodium sulfonate, accounts for 50% of auxiliary agent quality, described water accounts for 5% of liquid foam gross mass.
Embodiment 8
Embodiment 8 is identical with other steps of embodiment 1, difference is described to have in the liquid foam removing hydrogen sulfide and anti-flaming function, hydrogen sulfide alkaline absorbent is sodium acid carbonate, account for 30% of liquid foam gross mass, described inorganic salts retardant is zinc chloride, account for 30% of liquid foam gross mass, described composite foamable agent is Anionic-nonionic surfactant compound system, account for 20% of liquid foam gross mass, wherein anion surfactant is the sodium alkyl sulfate containing 12-18 carbon atom, account for 50% of composite foamable agent quality, non-ionic surface active agent is fatty acyl alkanolamine, account for 50% of composite foamable agent quality, described water accounts for 20% of liquid foam gross mass.
Embodiment 9
Embodiment 9 is identical with other steps of embodiment 1, difference is described to have in the liquid foam removing hydrogen sulfide and anti-flaming function, hydrogen sulfide alkaline absorbent is calcium hydroxide, account for 20% of liquid foam gross mass, described inorganic salts retardant is sodium carbonate, account for 20% of liquid foam gross mass, described composite foamable agent is Anionic-nonionic surfactant compound system, account for 15% of liquid foam gross mass, wherein anion surfactant is fatty alcohol ether sulfosuccinate disodium salt, account for the 40-99.5% of composite foamable agent quality, non-ionic surface active agent is APEO, account for the 0.5-60% of composite foamable agent quality, described auxiliary agent accounts for 15% of liquid foam gross mass, specifically foam stabiliser, solubilizer, wetting agent and antifreeze, described foam stabiliser is modification polyanion cellulose, account for 25% of auxiliary agent quality, solubilizer is AEO mono succinate sodium sulfonate, accounts for 25% of auxiliary agent quality, wetting agent is diisopropyl sodium naphthalene sulfonate, accounts for 25% of auxiliary agent quality, antifreeze is ethanol, accounts for 25% of auxiliary agent quality, described water accounts for 30% of liquid foam gross mass.
Claims (4)
1. prevent colliery from containing spontaneous combustion of coal seam and remove the filling exploitation method of hydrogen sulfide, it is characterized in that carrying out according to following steps:
(1) at excavation air intake lane, distance seat earth 1-1.5m place and return airway, described air intake lane and return airway be arranged in parallel, article two, the one end in tunnel is connected with work plane, the other end respectively lane total with air intake is connected with the total lane of return air, in air intake lane and the total lane of air intake, the connecting place in return airway and the total lane of return air lays connection roadway, this connection roadway is vertical with return airway with air intake lane, and is provided with air damper in connection roadway, forms exploiting field air intake exhaust system;
(2) according to exploiting field condition, the mining width in lane and the mining width of gob side entry retaining are filled in design, and the mining width of wherein filling lane is greater than the mining width of gob side entry retaining, and is less than the mining width of 1.2 times of gob side entry retainings;
(3) adopt coal-winning machine to exploit filling lane, coal seam across pitch is divided some sections, and each section divides some layers according to thickness, from top to bottom slicing, and same layering adopts drawing back, and coal-winning machine cutting falls ore deposit, adopts fortune shovel ore removal;
(4) every one deck back production complete after, on coal seam, spray the liquid foam having and remove hydrogen sulfide and anti-flaming function immediately, described have remove hydrogen sulfide and anti-flaming function liquid foam by hydrogen sulfide alkaline absorbent, inorganic salts retardant, composite foamable agent, auxiliary agent and water composition, described composite foamable agent is Anionic-nonionic surfactant compound system, accounts for the 0.1-35% of liquid foam gross mass, and wherein anion surfactant is sodium sulfate of polyethenoxy ether of fatty alcohol, Φ-ester sodium sulfonate, sodium alkylsulfosuccinates, acyl group oxygen alkyl sulfonic acid sodium, acyl methylamine alkane sulfonic acid sodium, lauramide SES, urine methylene nail polish acid amides, N-acyl group-N alkyl taurine sodium, ethoxymer distribution is the ethoxylated dodecyl alcohol sodium sulfovinate of 2-4, containing the sodium alkyl benzene sulfonate of 10-14 carbon atom, containing the a-alkene sulfonic acid sodium of 14-16 carbon atom, containing the sodium alkyl sulfate of 12-18 carbon atom, one or more in fatty alcohol ether sulfosuccinate disodium salt are with the mixture of arbitrary proportion mixing, and account for the 40-99.5% of composite foamable agent quality, non-ionic surface active agent is fatty acid ester is the polyoxyethylate amide of 1:2 with the ratio of diethanol amine amount of substance, polyoxyethylene alkyl amine, ether sulfate, APEO, laureth ammonium sulfate, coconut oil diethanol amide, silicones polyethers emulsion, alkylolamides, anhydrous sorbitol list Palmitate, one or more in fatty acyl alkanolamine, with the mixture of arbitrary proportion mixing, account for the 0.5-60% of composite foamable agent quality,
Then filling slurry is adopted to carry out filling to filling goaf, lane, described filling slurry is made up of slag, useless fiber, water glass, kaolin, gypsum and water, its preparation method is: by water and useless fiber, slag and gypsum mix and blend 15min, then add water glass and kaolin to continue stir and form filling slurry, wherein proportioning is slag: 460-500kg/m
3, useless fiber: 3-6kg/m
3, water glass: 0.2-0.6kg/m
3, kaolin: 0.6-1kg/m
3, gypsum: 20-60kg/m
3, water: 950-1100kg/m
3, the 24h intensity>=2Mpa of slip, 28 days final strength>=18.6Mpa;
When filling, adopt hydraulic pump that filling slurry is pumped into pipeline, and by pipeline, slag filling slurry is delivered to fill area, until complete the filling to this filling bed;
(5) repeat step (4) and carry out lower floor's exploitation, sprinkling and filling, exploit with filling complete completely until fill lane, when the exploitation of all filling lanes, also filling is complete, according to the mining sequence identical with step (3), adopt development machine separate zone production gob side entry retaining, every one deck exploitation terminates to carry out spraying and filling according to step (4) method, until gob side entry retaining filling is complete.
2. according to claim 1ly a kind ofly prevent colliery from containing spontaneous combustion of coal seam and remove the filling exploitation method of hydrogen sulfide, it is characterized in that described hydrogen sulfide alkaline absorbent accounts for the 0.5-60% of liquid foam gross mass, one or more specifically in sodium carbonate, potash, sodium acid carbonate, saleratus, calcium bicarbonate, NaOH, potassium hydroxide, calcium hydroxide, calcium oxide, zinc oxide are with the mixture of arbitrary proportion mixing.
3. according to claim 1ly a kind ofly prevent colliery from containing spontaneous combustion of coal seam and remove the filling exploitation method of hydrogen sulfide, it is characterized in that described inorganic salts retardant accounts for the 0.5-60% of liquid foam gross mass, one or more specifically in magnesium chloride, calcium chloride, zinc chloride, sodium chloride, sodium carbonate, potash, magnesium carbonate, sodium sulphate, zinc sulfate, calcium sulfate, KBr, calcium bromide are with the mixture of arbitrary proportion mixing.
4. according to claim 1ly a kind ofly prevent colliery from containing spontaneous combustion of coal seam and remove the filling exploitation method of hydrogen sulfide, it is characterized in that described auxiliary agent accounts for the 0-15% of liquid foam gross mass, specifically foam stabiliser, solubilizer, wetting agent and antifreeze, described foam stabiliser is modification polyanion cellulose, sodium carboxymethylcellulose, AEO, fatty acid ester and the ratio of diethanol amine amount of substance are the polyoxyethylate amides of 1:1, polyacrylamide, Cocoamidopropyl betaine, one or more in OA-12 are with the mixture of arbitrary proportion mixing, account for the 0.5-50% of auxiliary agent quality, solubilizer is one or more mixtures mixed with arbitrary proportion in Tween-20, Tween-40, urea, glycerine, pentaerythrite, isopropyl sodium sulfonate, polyoxyethylene polypropylene block type polyethers, sorbierite, anhydrous sorbitol, AEO mono succinate sodium sulfonate, accounts for the 0-50% of auxiliary agent quality, wetting agent is one or both mixtures mixed with arbitrary proportion in diisopropyl sodium naphthalene sulfonate, nekal, accounts for the 0-50% of auxiliary agent quality, antifreeze is one or both mixtures mixed with arbitrary proportion in ethanol, ethylene glycol, accounts for the 0-50% of auxiliary agent quality, described water accounts for the 5-90% of liquid foam gross mass.
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| CN104484713B (en) * | 2014-11-24 | 2017-09-29 | 辽宁工程技术大学 | A kind of filling mining water conducted zone Height Prediction method |
| CN108643882B (en) * | 2018-05-04 | 2023-03-28 | 西安凯尔文石化助剂制造有限公司 | H in crude oil 2 Method for eliminating S |
| CN109899104A (en) * | 2019-01-21 | 2019-06-18 | 山东科技大学 | A kind of economic and environment-friendly type gel foam for preventing and treating spontaneous combustionof coal |
| CN110469362B (en) * | 2019-08-23 | 2021-03-16 | 程海云 | Composite reinforcing slurry for railway overlying nitrate mine goaf and preparation method thereof |
| CN111156000A (en) * | 2020-04-07 | 2020-05-15 | 北京中矿创新联盟能源环境科学研究院 | Low seam coal-pillar-free retreating type coal mining method |
| CN112546837B (en) * | 2020-11-05 | 2023-02-03 | 太原理工大学 | Device for treating hydrogen sulfide gas on underground coal roadway driving working face by using gas atomization alkaline fluid |
| CN113051791B (en) * | 2021-03-09 | 2021-10-01 | 中国安全生产科学研究院 | Safety prevention and control method for mining process of newly-built sulfide ore deposit |
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| AU2009201159A1 (en) * | 2008-03-27 | 2009-10-15 | RUS Mining Services Pty Limited | Flexible Mine Seal |
| CN101476479B (en) * | 2009-01-20 | 2011-01-05 | 中国科学技术大学 | Foam type stopping agent for preventing mine coal spontaneous combustion and its use method |
| CN102996131B (en) * | 2012-12-10 | 2014-10-29 | 中国矿业大学 | Solid-filling coal mining method with two pre-excavating tunnels for advancing |
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