CN103867225A - Filling mining method for preventing spontaneous combustion of coal bearing seam of coal mine and removing hydrogen sulfide - Google Patents
Filling mining method for preventing spontaneous combustion of coal bearing seam of coal mine and removing hydrogen sulfide Download PDFInfo
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- CN103867225A CN103867225A CN201410115684.XA CN201410115684A CN103867225A CN 103867225 A CN103867225 A CN 103867225A CN 201410115684 A CN201410115684 A CN 201410115684A CN 103867225 A CN103867225 A CN 103867225A
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Abstract
The invention belongs to the field of coal mining safety, and particularly relates to a filling mining method for preventing spontaneous combustion of a coal bearing seam of a coal mine and removing hydrogen sulfide. According to the filling mining method, the positions 1-1.5 m away from a coal floor are excavated to form an air intake roadway and an air return roadway, the mining width of a filling roadway and the mining width of a remained roadway along a gob are designed, and the filling roadway is mined by adopting a coal cutter; after recovery of each layer is finished, liquid foam with the function of removing hydrogen sulfide and retarding flames is sprayed onto the coal seam immediately, and the gob of the filling roadway is filled with filling material slurry. By means of the filling mining method, in a mining process, harmful gas is effectively prevented from injuring people or exploding; besides, it is prevented that strength is reduced because filling materials crack after being solidified, the recovery rate is increased, mining efficiency is improved, waste is utilized, and mining cost is lowered; the filling mining method is particularly suitable for the thick coal seam out of which a great deal of hydrogen sulfide overflows.
Description
Technical field
The invention belongs to coal mining security fields, be specifically related to a kind ofly prevent that colliery from containing spontaneous combustion of coal seam and removing the filling exploitation method of hydrogen sulfide.
Background technology
For a long time, there are several large problems in the exploitation of coal resources all the time: the one, in seam mining, there are a large amount of toxic gases, and for example hydrogen sulfide and explosive, the 2nd, ground settlement control effect is undesirable, and the 3rd, coal seam working section recovery is lower.
The Main Means that at present mine is removed hydrogen sulfide 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 larger goaf effect of hydrogen sulfide content, and it is short that second way liquid-absorbant injects distance, and it is larger that sprinkling is affected by space layout, and liquid is difficult for retaining in gap, goaf, easily flows away, and stabilization time is short, and loss amount is large.
In addition, control ground settlement and mainly open delay filling cementing material by part, and partial mining adopts filling lane and gob side entry retaining setting at present, Dan Liu lane mining width is 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 is higher, and press under impact and easily ftracture on ground after filler is fixed, ground 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 that colliery from containing spontaneous combustion of coal seam and removing the filling exploitation method of hydrogen sulfide, object is in recovery process, effectively to prevent infringement and the blast of pernicious gas to personnel, and prevent that the fixed rear cracking of filler from reducing intensity, improve the rate of extraction, improve production efficiency twice laid and reduce cost of winning, be particularly useful for thicker and hydrogen sulfide gas and overflow compared with multiple seam.
Realizing the technical scheme of the object of the invention carries out according to following steps:
(1) excavating air intake lane and return airway apart from seat earth 1-1.5m place, 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 is connected with the total lane of return air with the total lane of air intake respectively, connecting place in air intake lane and the total lane of air intake, return airway and the total lane of return air is laid connection roadway, this connection roadway is vertical with return airway with air intake lane, and in connection roadway, is provided with air damper, 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 to some sections, each section divides some layers according to thickness, slicing from top to bottom, and same layering adopts drawing back, and the coal-winning machine cutting ore deposit that falls, adopts fortune shovel ore removal;
(4) every one deck back production complete after, on coal seam, spray and have the liquid foam of removing hydrogen sulfide and anti-flaming function immediately, the liquid foam that hydrogen sulfide and anti-flaming function are removed in described having 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: 0.2-0.6 kg/m
3, kaolin: 0.6-1 kg/m
3, gypsum: 20-60kg/m
3, water: 950-1100 kg/m
3, the 24h intensity>=2Mpa of slip, 28 days final strength>=18.6Mpa;
In the time of 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) repeating step (4) carries out lower floor's exploitation, sprinkling and filling, until that exploit completely with filling in filling lane is complete, when the exploitation of all fillings lane, also filling is complete, according to and the identical mining sequence of step (3), adopt development machine separate zone production gob side entry retaining, the exploitation of every one deck finish according to and step (4) method spray and filling, until gob side entry retaining filling is complete.
Described hydrogen sulfide alkaline absorbent accounts for the 0.5-60% of liquid foam gross mass, the mixture that specifically one or more in sodium carbonate, potash, sodium acid carbonate, saleratus, calcium bicarbonate, NaOH, potassium hydroxide, calcium hydroxide, calcium oxide, zinc oxide mix with arbitrary proportion, described inorganic salts retardant accounts for the 0.5-60% of liquid foam gross mass, the mixture that specifically one or more in magnesium chloride, calcium chloride, zinc chloride, sodium chloride, sodium carbonate, potash, magnesium carbonate, sodium sulphate, zinc sulfate, calcium sulfate, KBr, calcium bromide mix with arbitrary proportion, 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, alkyl sodium sulfosuccinate, 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, with the mixture of arbitrary proportion mixing, account for the 40-99.5% of composite foamable agent quality, and non-ionic surface active agent is that fatty acid ester is the polyoxyethylate amide of 1:2 with the ratio of diethanol amine amount of substance, polyoxyethylene alkyl amine, alcohol ether sodium 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, described foam stabiliser is modification polyanion cellulose, sodium carboxymethylcellulose, AEO, fatty acid ester is one or more mixtures that mix with arbitrary proportion in the polyoxyethylate amide, polyacrylamide, Cocoamidopropyl betaine, OA-12 of 1:1 with the ratio of diethanol amine amount of substance, accounts for the 0.5-50% of auxiliary agent quality, solubilizer is one or more mixtures that mix 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 that mix with arbitrary proportion in diisopropyl sodium naphthalene sulfonate, nekal, accounts for the 0-50% of auxiliary agent quality, antifreeze is one or both mixtures that mix 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 to continue to stir and form filling slurry, filling slurry proportioning is slag: 460-500kg/m
3, useless fiber: 3-6kg/m
3, water glass: 0.2-0.6 kg/m
3, kaolin: 0.6-1 kg/m
3, gypsum: 20-60kg/m
3, water: 950-1100 kg/m
3, the 24h intensity>=2Mpa of the filling slurry finally obtaining, 28 days final strength>=18.6Mpa.
Compared with prior art, feature of the present invention and beneficial effect are:
The mining width that 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 be less than 1.2 times of gob side entry retainings can further improve the rate of extraction;
The present invention by adding useless fiber in filler, can prevent filler body cracking, increase its ductility, and twice laid, can ensure the intensity stabilization of filler, adopt slag to replace cement simultaneously, replace the expansion agents such as magnesium powder of the prior art with kaolin, in conjunction with water glass and gypsum, can further reduce costs in guaranteed strength simultaneously;
After the every one deck back production of the present invention is complete, on coal seam, spray and there is the liquid foam of removing hydrogen sulfide and anti-flaming function immediately, 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 is effective, liquid foam can be filled in rock crevice, can wind leaking stoppage, reduce oxygen content, prevent spontaneous combustionof coal, the liquid viscosity forming after broken bubble is large, can stick to surface, coal seam, play oxygen barrier, the effect of cooling, also can prevent spontaneous combustionof coal, the liquid foam adopting, select cost low, environmental protection, free of contamination alkaline absorbent and inorganic salts retardant, can remove pernicious gas hydrogen sulfide under coal mine, can prevent again spontaneous combustionof coal.
Brief description of the drawings
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, 9 ° of average out to, base plate is for containing charcoal mud stone, 0.8 meter of thickness, top board is that 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 arranges.
Embodiment
Prevent that colliery from containing spontaneous combustion of coal seam and removing the filling exploitation method of hydrogen sulfide, concrete steps are:
(1) excavating air intake lane 2 and return airway 1 apart from seat earth 1-1.5m place, 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 is connected with the total lane 6 of return air with the total lane 5 of air intake respectively, lay connection roadway 4 with the total lane 5 of air intake, return airway 1 with the connecting place in the total lane 6 of return air in air intake lane 2, 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 to some sections, each section divides some layers according to thickness, slicing from top to bottom, and same layering adopts drawing back, and the coal-winning machine cutting ore deposit that falls, adopts fortune shovel ore removal;
(4) every one deck back production complete after, on coal seam, spray and have the liquid foam of removing hydrogen sulfide and anti-flaming function immediately, the liquid foam that hydrogen sulfide and anti-flaming function are removed in described having 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 that 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 be modification polyanion cellulose account for auxiliary agent quality 0.5%, 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: 0.2-0.6 kg/m
3, kaolin: 0.6-1 kg/m
3, gypsum: 20-60kg/m
3, water: 950-1100 kg/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 nonwoven.
In the time of 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) repeating step (4) carries out lower floor's exploitation, sprinkling and filling, until exploit completely in filling lane 7 and filling is complete, when 7 exploitations of all fillings lane, also filling is complete, according to and the identical mining sequence of step (3), adopt development machine separate zone production gob side entry retaining 3, the exploitation of every one deck finish according to and step (4) method spray and filling, until gob side entry retaining 3 fillings are complete.
Adopt after said method construction, hydrogen sulfide gas absorptivity reaches 92-95%, and by apparent examining over the ground, earth's surface year settling amount be all less than 10mm, do not cause the every infrastructure in mining area to be destroyed, and the rate of extraction improved 20%, cost 10% left and right.
Embodiment 2
Embodiment 2 is identical with embodiment 1 other steps, difference is described having in the liquid foam of 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 alkyl sodium sulfosuccinate, account for 60% of composite foamable agent quality, non-ionic surface active agent is the mixture of polyoxyethylene alkyl amine and alcohol ether sodium 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 embodiment 1 other steps, difference is described having in the liquid foam of 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 that 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 embodiment 1 other steps, difference is described having in the liquid foam of 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 embodiment 1 other steps, difference is described having in the liquid foam of 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 embodiment 1 other steps, difference is described having in the liquid foam of 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, wherein anion surfactant is that ethoxymer distribution is the ethoxylated dodecyl alcohol sodium sulfovinate of 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 embodiment 1 other steps, difference is described having in the liquid foam of 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 that contains the sodium alkyl benzene sulfonate of 10-14 carbon atom and contain the a-alkene sulfonic acid sodium of 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 embodiment 1 other steps, difference is described having in the liquid foam of 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 embodiment 1 other steps, difference is described having in the liquid foam of 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 (6)
1. prevent that colliery from containing spontaneous combustion of coal seam and removing the filling exploitation method of hydrogen sulfide, is characterized in that carrying out according to following steps:
(1) excavating air intake lane and return airway apart from seat earth 1-1.5m place, 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 is connected with the total lane of return air with the total lane of air intake respectively, connecting place in air intake lane and the total lane of air intake, return airway and the total lane of return air is laid connection roadway, this connection roadway is vertical with return airway with air intake lane, and in connection roadway, is provided with air damper, 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 to some sections, each section divides some layers according to thickness, slicing from top to bottom, and same layering adopts drawing back, and the coal-winning machine cutting ore deposit that falls, adopts fortune shovel ore removal;
(4) every one deck back production complete after, on coal seam, spray and have the liquid foam of removing hydrogen sulfide and anti-flaming function immediately, the liquid foam that hydrogen sulfide and anti-flaming function are removed in described having 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: 0.2-0.6 kg/m
3, kaolin: 0.6-1 kg/m
3, gypsum: 20-60kg/m
3, water: 950-1100 kg/m
3, the 24h intensity>=2Mpa of slip, 28 days final strength>=18.6Mpa;
In the time of 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) repeating step (4) carries out lower floor's exploitation, sprinkling and filling, until that exploit completely with filling in filling lane is complete, when the exploitation of all fillings lane, also filling is complete, according to and the identical mining sequence of step (3), adopt development machine separate zone production gob side entry retaining, the exploitation of every one deck finish according to and step (4) method spray and filling, until gob side entry retaining filling is complete.
2. according to claim 1ly a kind ofly prevent that colliery from containing spontaneous combustion of coal seam and removing 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, the mixture that specifically one or more in sodium carbonate, potash, sodium acid carbonate, saleratus, calcium bicarbonate, NaOH, potassium hydroxide, calcium hydroxide, calcium oxide, zinc oxide mix with arbitrary proportion.
3. according to claim 1ly a kind ofly prevent that colliery from containing spontaneous combustion of coal seam and removing 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, the mixture that specifically one or more in magnesium chloride, calcium chloride, zinc chloride, sodium chloride, sodium carbonate, potash, magnesium carbonate, sodium sulphate, zinc sulfate, calcium sulfate, KBr, calcium bromide mix with arbitrary proportion.
4. according to claim 1ly a kind ofly prevent that colliery from containing spontaneous combustion of coal seam and removing the filling exploitation method of hydrogen sulfide, it is characterized in that described composite foamable agent is Anionic-nonionic surfactant compound system, account for the 0.1-35% of liquid foam gross mass, wherein anion surfactant is sodium sulfate of polyethenoxy ether of fatty alcohol, Φ-ester sodium sulfonate, alkyl sodium sulfosuccinate, 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, with the mixture of arbitrary proportion mixing, account for the 40-99.5% of composite foamable agent quality, and non-ionic surface active agent is that fatty acid ester is the polyoxyethylate amide of 1:2 with the ratio of diethanol amine amount of substance, polyoxyethylene alkyl amine, alcohol ether sodium 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.
5. according to claim 1ly a kind ofly prevent that colliery from containing spontaneous combustion of coal seam and removing 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 is the polyoxyethylate amide of 1:1 with the ratio of diethanol amine amount of substance, polyacrylamide, Cocoamidopropyl betaine, the mixture that one or more in OA-12 mix with arbitrary proportion, account for the 0.5-50% of auxiliary agent quality, solubilizer is one or more mixtures that mix 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 that mix with arbitrary proportion in diisopropyl sodium naphthalene sulfonate, nekal, accounts for the 0-50% of auxiliary agent quality, antifreeze is one or both mixtures that mix 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.
6. according to claim 1ly a kind ofly prevent that colliery from containing spontaneous combustion of coal seam and removing the filling exploitation method of hydrogen sulfide, is characterized in that 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 to continue to stir and form filling slurry, filling slurry proportioning is slag: 460-500kg/m
3, useless fiber: 3-6kg/m
3, water glass: 0.2-0.6 kg/m
3, kaolin: 0.6-1 kg/m
3, gypsum: 20-60kg/m
3, water: 950-1100 kg/m
3, the 24h intensity>=2Mpa of the filling slurry finally obtaining, 28 days final strength>=18.6Mpa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410115684.XA CN103867225B (en) | 2014-03-26 | 2014-03-26 | A kind ofly prevent colliery from containing spontaneous combustion of coal seam and remove the filling exploitation method of hydrogen sulfide |
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| CN201410115684.XA CN103867225B (en) | 2014-03-26 | 2014-03-26 | A kind ofly prevent colliery from containing spontaneous combustion of coal seam and remove the filling exploitation method of hydrogen sulfide |
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| CN104484713A (en) * | 2014-11-24 | 2015-04-01 | 辽宁工程技术大学 | Prediction method for height of filling and mining water flowing fracture zone |
| CN108643882A (en) * | 2018-05-04 | 2018-10-12 | 西安凯尔文石化助剂制造有限公司 | A kind of H in crude oil2The removing method of S |
| CN110469362A (en) * | 2019-08-23 | 2019-11-19 | 程海云 | Salt made from earth containing a comparatively high percentage of sodium chloride ore goaf composite consolidation slurries and preparation method thereof are covered on a kind of railway |
| 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 |
| WO2020151191A1 (en) * | 2019-01-21 | 2020-07-30 | 山东科技大学 | Economical and environmentally friendly gel foam for preventing autoignition of coal |
| CN112546837A (en) * | 2020-11-05 | 2021-03-26 | 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 |
| CN113051791A (en) * | 2021-03-09 | 2021-06-29 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104484713A (en) * | 2014-11-24 | 2015-04-01 | 辽宁工程技术大学 | Prediction method for height of filling and mining water flowing fracture zone |
| 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 |
| CN108643882A (en) * | 2018-05-04 | 2018-10-12 | 西安凯尔文石化助剂制造有限公司 | A kind of H in crude oil2The removing method of S |
| WO2020151191A1 (en) * | 2019-01-21 | 2020-07-30 | 山东科技大学 | Economical and environmentally friendly gel foam for preventing autoignition of coal |
| CN110469362A (en) * | 2019-08-23 | 2019-11-19 | 程海云 | Salt made from earth containing a comparatively high percentage of sodium chloride ore goaf composite consolidation slurries and preparation method thereof are covered on a kind of railway |
| 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 |
| CN112546837A (en) * | 2020-11-05 | 2021-03-26 | 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 |
| CN113051791A (en) * | 2021-03-09 | 2021-06-29 | 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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