CN110273664A - Gas production device contained by coal seam with circulating mash gas extraction pump - Google Patents
Gas production device contained by coal seam with circulating mash gas extraction pump Download PDFInfo
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- CN110273664A CN110273664A CN201810207939.3A CN201810207939A CN110273664A CN 110273664 A CN110273664 A CN 110273664A CN 201810207939 A CN201810207939 A CN 201810207939A CN 110273664 A CN110273664 A CN 110273664A
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- 239000003245 coal Substances 0.000 title claims abstract description 288
- 238000000605 extraction Methods 0.000 title claims abstract description 157
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000009423 ventilation Methods 0.000 claims abstract description 95
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 239000011435 rock Substances 0.000 claims description 68
- 238000000034 method Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000010276 construction Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 241001012508 Carpiodes cyprinus Species 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims 1
- 239000000284 extract Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 287
- 239000008246 gaseous mixture Substances 0.000 description 12
- 238000005065 mining Methods 0.000 description 4
- 238000012806 monitoring device Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000012261 overproduction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/006—Production of coal-bed methane
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The purpose of gas production device contained by coal seam of the present invention with circulating mash gas extraction pump is to be automatically drained out leaked-in air in the produced gas of existing mine gas extraction system.The present invention is that existing mine connects in coal seam in the drill site coal road in a plurality of gas drainage coal hole, is connected at mine ventilation roadway at it, isobaric fire dam of constructing.The mine gas extraction in existing connection ground gas extraction pump and gas drainage coal hole collects transport pipeline, in mine ventilation roadway, it is sequentially connected the circulating mash gas air injection pipe that circulating mash gas extraction pipeline, circulating mash gas extraction pump, outlet mouth of pipe are located in drill site coal road.Open ground gas extraction pump and circulating mash gas extraction pump, the flow control valve of operation circulation gas air injection pipe, increase and decrease the mixed gas of circulating mash gas extraction pump injection drill site coal road, so that the air pressure in drill site coal road and in mine ventilation roadway is kept equal, air in mine ventilation roadway is blocked to leak into drill site coal road.Air to the air that existing ground gas extraction pump continuously extracts drill site coal road out disappears, and the gas for flowing through above-mentioned two pump is airfree gas.The present invention is suitable for all coal mines.
Description
The present invention relates to the gas contained by pit mining coal seam (a kind of coal bed gas) for technical field, belong to mining technique.
The existing mine gas extraction system of background technique, by ground gas extraction pump, the mine ventilation along the underground of producing coal
The gas drainage that tunnel is laid with collects transport pipeline, a plurality of gas drainage coal hole in coal seam is sequentially connected composition.System benefit
Use the mine ventilation roadway in the coal seam of production coal as drill site coal road, long watt of multiple several hundred rice in direct construction coal
This extraction coal hole, coal hole opening is interior to be inserted into gas drainage pipe, and the gap between pipe and hole wall is closed full of packing material, structure
At gas drainage coal Kong Zuhe.There is the gas drainage of connection ground gas extraction pump steam inlet to collect transport in mine ventilation roadway
Pipeline, the pipeline connect each gas drainage pipe.Open ground gas extraction pump, air inlet, gas drainage collect transport pipeline,
Air pressure in gas drainage coal hole, the air pressure being below in mine ventilation roadway.And the air pressure gassy of coal seam institute, it is greater than mine
Air pressure in airway.Under differential pressure action, air in gas contained by coal seam and drill site coal road simultaneously flows through different coals
Layer crack forms the gaseous mixture of gas, air into gas drainage coal hole.Gaseous mixture successively continuously flow into gas drainage pipe, watt
Transport pipeline, ground gas extraction pump, gas user pipe are collected in this extraction.The problem of existing mine gas extraction is need to build
If the pressurized liquefied separation plant of gaseous mixture, compression that gaseous mixture is pressurizeed from low to high makes the oxygen and nitrogen elder generation in gaseous mixture
Row liquefaction separation is removed, and remaining high pressure gas gas can be just obtained.
The purpose of gas production device contained by coal seam of the summary of the invention present invention with circulating mash gas extraction pump, is gas
Extraction system removes the air in the produced gas air gaseous mixture of existing mine gas extraction system automatically, solves the prior art and builds
If the pressurized liquefied separation plant investment of gaseous mixture is high, problem at high cost.
Implement the present invention, crack in mine ventilation roadway, isobaric fire dam and its periphery rock (coal) layer, construction watt in coal seam
This extraction coal hole puts that the drill site coal road of drilling machine, the combination of multiple gas drainage coals hole is sequentially connected and connects in coal seam.Mine ventilation lane
There are in monitoring drill site coal road the monitoring device of air pressure and the transmission facilities of air pressure numerical value in air pressure and mine ventilation roadway in road, and
Isobaric fire dam is constituted with isobaric fire dam to combine.There is the gas drainage along its overall length to collect transport pipeline in drill site coal road, it should
Pipeline connects the gas drainage pipe of each gas drainage coal hole combination, and passes through the sensible mine ventilation roadway of isobaric fire dam, Yan Kuang
The sensible ground in well airway connects ground gas extraction pump.In mine ventilation roadway, there is circulating mash gas extraction pump, the pump into
Port is sequentially connected circulating mash gas extraction pipeline, gas drainage collects transport pipeline, and the gas outlet of the pump, which is attached across, waits densification
Close the circulating mash gas gas injecting pipe of the sensible drill site coal road of wall.There are total gas couette meter, Gas-Flow meter, air on above-mentioned pipeline
Flowmeter, gas density meter and flow control valve.
Implement the present invention, before opening ground gas extraction pump and circulating mash gas extraction pump, in drill site coal road, gas drainage coal
Air pressure in hole, equal to the air pressure of mine ventilation roadway, thus the air in mine ventilation roadway does not pass through isobaric fire dam week
Crack in Bian Yan (coal) layer flows into drill site coal road.Ground gas extraction pump is individually opened, the air in drill site coal road flows through coal
Layer crack, is drawn into each gas drainage coal hole, and gas volume is reduced in drill site coal road, air pressure reduces, thus mine ventilation roadway
Interior air flows through the crack in isobaric fire dam periphery rock (coal) layer, flows into drill site coal road.Opening two pumps simultaneously is ground watt
This extraction pump and circulating mash gas extraction pump, circulating mash gas extraction pump flow through the air mass flow of two pumps when being equal to by flow and open two pumps
The sum of gaseous mixture inject drill site coal road, and keep the flow rate fine-tuning, that is, compensation drill site coal road kept to leak into each gas drainage coal
The gas flow in hole keeps the air pressure in the constant gas volume in drill site coal road, air pressure and mine ventilation roadway to keep in balance
It is equal, then stop the gas exchanges between mine ventilation roadway and drill site coal road.In this way, ground gas extraction pump continuously extracts brill out
The air retained in the coal road of field is discharged into user's gas tube, until the air in drill site coal road disappears in metering, hereafter flows through two
The gas of pump is airfree gas.Specific method is: personnel operate the flow tune of aforementioned each pipeline in mine ventilation roadway
Valve is controlled, keeps equal with air pressure equalisation shown by the Pressure monitoring equipment in drill site coal road in mine ventilation roadway, i.e. table
Show that the gas flow of injection drill site coal road is equal with the flow of drill site coal road eluting gas, makes in drill site coal road gas volume not
Change, air pressure are constant, exchange drill site coal road without gas with mine ventilation roadway.Can also each pipeline flow control valve use
Electromagnetic valve is pocessed after collecting each pipeline flow and pressure parameter from computer, issues instruction to each electromagnetic valve, it is ensured that
It is equal with the air pressure equalisation in mine ventilation roadway in drill site coal road.By upper, circulating mash gas extraction system is pressed in mine, by following
Ring gas drainage pump discharge, circulating mash gas gas injecting pipe, drill site coal road, the coal seam for connecting drill site coal road and each gas drainage coal hole
Crack, each gas drainage coal hole, gas drainage pipe, gas drainage collect transport pipeline, circulating mash gas extraction pipeline, circulating mash gas
Extraction pump steam inlet is sequentially connected composition, and the gas flow of the system is equal to the gas that drill site coal road leaks into each gas drainage coal hole
The sum of flow.
Implement the present invention, the gas drainage in drill site coal road collects transport pipeline position and is lower than each gas drainage pipe, to receive
Collect the water of each gas drainage coal hole outflow.Water collects the water tank that the low-lying place of drill site coal road is flow in transport pipeline in gas drainage,
There is immersible pump in water tank.Low-lying ponding section also has immersible pump in drill site coal road.The cable and drainpipe of above-mentioned immersible pump connection, lead to
Up to mine ventilation roadway, cable switch is in mine ventilation roadway.
Implement the present invention, can 1 mine ventilation roadway and Qi Nei circulating mash gas extraction pump, serve the multiple of its two sides
Drill site coal road replaces gas contained by working seam.During the production gas treatment technique coal road draining coal seam gas of side, the other side is applied
The engineering for taking over production gas treatment technique coal road and its interior a plurality of gas drainage coal hole combination of work.To avoid in high gas layer
The gas hazard of construction drill site coal road takes over production gas treatment technique coal road, the production gas treatment technique coal road adjacent positioned at the same side
Gas drainage coal bore end above coal seam in or the coal seam of lower section in, not with production gas treatment technique coal road gas drainage coal
Hole is connected.
Implement the present invention, for improve fire dam reliability, can mine ventilation roadway in the rock stratum below coal seam.For
This, the combination of isobaric fire dam in the mine ventilation roadway, rock stratum below coal seam and crack in the rock stratum of isobaric fire dam periphery,
On the crack into isobaric tunnel, drill site coal road fire dam and its periphery rock stratum, the drill site coal road in coal seam, multiple gas drainages
Coal hole is sequentially connected.In the gas drainage of connection drill site coal road and mine ventilation roadway collection transport pipeline, mine ventilation roadway
Circulating mash gas extraction pipeline, circulating mash gas extraction pump, across isobaric fire dam it is sensible on to the circulating mash gas in isobaric tunnel infuse
Feed channel, the crack in the rock stratum of drill site coal road fire dam periphery, drill site coal road, gas drainage are collected transport pipeline and are constituted in mine
Circulating mash gas extraction system has flow control valve on above-mentioned pipeline.Gas drainage collects transport pipeline along mine ventilation lane
The sensible ground in road simultaneously connects ground gas extraction pump.Personnel operate the flow control valve of each pipeline in mine ventilation roadway,
Keep the registration equilibrium for monitoring the monitoring device of the air pressure in the air pressure and mine ventilation roadway in isobaric tunnel equal.There is draining
Pipe is connected to drill site coal road and mine ventilation roadway.
Implement the present invention, if mine ventilation roadway is in coal seam, can be sequentially connected it is lower to tunnel, isobaric fire dam and its
Crack in crack in the rock stratum of periphery, horizontal isobaric tunnel, drill site coal road fire dam and its periphery rock stratum, on to rock gangway, drill site coal
A plurality of gas drainage coal hole in lane, coal seam.Drill site coal road, gas drainage well, ground gas extraction transport pipeline, ground gas are taken out
Adopt pump, gas user pipe is sequentially connected.Isobaric circulating mash gas extraction system in mine, by the circulation watt in mine ventilation roadway
This extraction pump gas outlet, the circulating mash gas gas injecting pipe in sensible horizontal isobaric tunnel, horizontal isobaric tunnel, drill site fire dam periphery
Circulating mash gas extraction pipeline, the circulating mash gas in crack, drill site coal road, connection mine ventilation roadway and drill site coal road in rock stratum are taken out
It adopts pump steam inlet and is sequentially connected composition.The same time of ground gas extraction pump and circulating mash gas extraction pump is opened, personnel are in mine
The flow control valve that above-mentioned pipeline is operated in well airway makes in drill site coal road equal to the sum of above-mentioned two pumps gas flow
Gaseous mixture enters ground gas extraction pump and keeps this flow rate fine-tuning, makes to be equal to the sum of above-mentioned two pumps air mass flow in drill site coal road
Gaseous mixture enter circulating mash gas extraction pump and keep this flow rate fine-tuning, make in water mean pressure tunnel with mine ventilation roadway in
Air pressure monitoring device registration equilibrium is equal.Ground gas extraction pump continuously extracts retention in drill site coal road and water mean pressure tunnel out
Air, until air disappears, then the gas for pressing circulating mash gas extraction system and ground gas extraction pump to be flowed in mine is
Airfree gas.
The implementation present invention forbids tunneling stone head if rock stratum contains Ordovician karst water below coal seam, can coal seam top rock stratum Nei Kuang
Well airway, the lower crack into tunnel, isobaric fire dam and its periphery rock stratum, it is lower to press tunnel, drill site fire dam and
Crack in its periphery rock stratum, drill site coal road, a plurality of gas drainage coal hole in coal seam are sequentially connected and connect.Gas drainage collects transport
Pipeline connects mine ventilation roadway and drill site coal road, and along the sensible ground of mine ventilation roadway, connects ground gas extraction pump.Mine
Well equipressure circulating mash gas extraction system, from the circulating mash gas extraction pump gas outlet, sensible lower to isobaric lane in mine ventilation roadway
The circulating mash gas gas injecting pipe in road, the lower crack into isobaric tunnel, drill site coal road fire dam periphery rock stratum, drill site coal road, watt
This extraction collect transport pipeline, circulating mash gas extraction pipeline in mine ventilation roadway, circulating mash gas extraction pump air inlet successively
It connects and composes.It opens ground gas extraction pump and circulating mash gas extraction pump, personnel manipulates aforementioned each pipe in mine ventilation roadway
The flow control valve in road, to the air pressure monitoring device registration equilibrium phase pressed in tunnel and in mine ventilation roadway under holding
Deng.
Implement the present invention, to inclined coal seams, since coal is layer-by-layer mining, existing gas drainage is also with coal mining lane
Channel successively carries out.To improve gas yield, all coal seams is needed to exploit gas simultaneously.For this purpose, below inclined coal seams in rock stratum
Mine ventilation inclined shaft cylinder be sequentially connected mine ventilation rock gangway, pressure fire dam combination and press fire dam periphery rock stratum implosion
Gap, across each coal seam of coal seam group horizontal drill site rock gangway, from horizontal drill site rock gangway two sides in each coal seam construction show off fan transfer
The combination of a plurality of gas drainage coal hole is sequentially connected.Transport pipeline is collected along the gas drainage of horizontal drill site rock gangway overall length, connection is each
The gas drainage pipe of gas drainage coal hole combination, and it is logical along mine ventilation rock gangway and mine ventilation inclined shaft cylinder to pass through impartial fire dam
Up to ground, ground gas extraction pump is connected.There is circulating mash gas extraction pump in mine ventilation rock gangway, air inlet is sequentially connected circulation
Gas pumping pipeline, gas drainage collect transport pipeline, and gas outlet connection outlet mouth of pipe is located at following in horizontal drill site rock gangway
Ring gas air injection pipe.Isobaric circulating mash gas extraction system in mine, by circulating mash gas extraction pump gas outlet, circulating mash gas air injection pipe
Road, horizontal drill site rock gangway, cracks in coal seam, the gas drainage coal hole, gas for connecting horizontal drill site rock gangway and each gas drainage coal hole
Drainage tube, gas drainage collect transport pipeline, circulating mash gas extraction pipeline, circulating mash gas extraction pump steam inlet and are sequentially connected structure
At.Ground gas extraction pump and circulating mash gas extraction pump are opened, the flow control valve of operation circulation gas air injection pipe keeps water
It is equal with the gas pressure monitoring equipment registration equilibrium in mine ventilation rock gangway in the rock gangway of flat drill field.
Implement the present invention, it is big to solve the problems, such as to show off fan transfer borehole engineering amount, it can be applied from horizontal drill site rock gangway two sides
The drill site coal road in each coal seam of work, by the gas drainage coal Kong Zuhe parallel to each other in each coal seam of drill site coal road construction coal group.
The gas of the gas drainage coal hole combination in each coal seam takes out pipe, connects and takes out along the gas that horizontal drill site rock gangway and each drill site coal road are laid with
Harvesting collection transport pipeline.
Implement the present invention, when being not suitable for placing circulating mash gas extraction pump in mine, circulating mash gas extraction pump can be set to
Ground, air inlet is sequentially connected ground circulating mash gas extraction pipeline, the gas drainage on ground collects transport pipeline, ground gas
The air inlet of extraction pump, gas outlet are sequentially communicated ground circulating mash gas gas injecting pipe, the circulating mash gas in mine ventilation roadway
Gas injecting pipe.
Advantages of the present invention is that mine gas extraction system removes the air in gas air gaseous mixture automatically, saves
The prior art builds the investment and cost of the pressurized liquefied separation factory of gaseous mixture.
Detailed description of the invention
The tunnel of the existing mine gas extraction system of Fig. 1 and gas drainage coal hole pattern
In figure:
1: coal seam
2: mine ventilation roadway.This figure is that it is used as drill site coal road part
3: putting the drill site of drilling machine
4: gas drainage coal hole group
5: the coal working face of someone's operation
6: terminating the goaf of producing coal
Arrow indicates mine ventilation wind direction in figure.
Gas drainage coal hole combination assumption diagram in Fig. 2 drill site coal road
In figure:
2: mine ventilation roadway.It is used as drill site coal road part in this figure for it
4: gas drainage coal hole
7: gas drainage pipe
8: gas drainage collects transport pipeline
9: the packing material between pipe and hole wall in gap
10: the crack in coal (rock) layer.
Arrow is gas flow direction in figure
Isobaric circulating mash gas extraction system figure in Fig. 3 mine
In figure:
2: mine ventilation roadway
4: gas drainage coal Kong Zuhe
8: gas drainage collects transport pipeline.Ground gas extraction pump is connected along the sensible ground of mine ventilation roadway.
10: the crack in coal (rock) layer
11: drill site coal road
12: circulating mash gas extraction pipeline
13: circulating mash gas extraction pump
14: circulating mash gas gas injecting pipe
15: the flow control valve on circulating mash gas gas injecting pipe
16: pressure fire dam combination
Each pipeline has gas flowmeter and flow control valve, is not drawn into figure.
Fig. 4 mine ventilation roadway is located in the mine below coal seam isobaric circulating mash gas extraction system figure
In figure
1: coal seam
2: mine ventilation roadway
4: gas drainage coal hole.Haulage drift is collected without gas drainage pipe connection gas drainage at aperture.
8: gas drainage collects transport pipeline.It is not drawn into the pipeline in figure along the sensible ground of mine ventilation roadway and connects ground
Face gas drainage pump.The pipeline is sequentially connected circulating mash gas extraction pipeline (being not drawn into figure), circulation in mine ventilation roadway
Gas drainage pump.
10: the crack in coal (rock) layer
11: drill site coal road
13: circulating mash gas extraction pump
14: circulating mash gas gas injecting pipe.The pipeline connects circulating mash gas extraction pump gas outlet, is not drawn into figure.
16: isobaric fire dam combination
17: on to press tunnel
18: drill site coal road fire dam
Fig. 5 mine ventilation roadway isobaric circulating mash gas extraction system figure in the mine in coal seam
In figure
1: coal seam
2: mine ventilation roadway
2.1: under to tunnel
10: the crack in coal (rock)
4: gas drainage coal hole.Without gas drainage pipe at aperture.
11: drill site coal road
12: circulating mash gas extraction pipeline
13: circulating mash gas extraction pump
14: circulating mash gas gas injecting pipe
16: isobaric envelope wall combination
17: horizontal equipressure tunnel
17.1: on to rock gangway
18: drill site coal road fire dam 19: gas drainage well
20: ground gas extraction transport pipeline
21: ground gas extraction pump
22: gas user pipe
23: ground
Fig. 6 mine ventilation roadway presses circulating mash gas extraction system figure in the mine above coal seam
In figure:
1: coal seam
2: mine ventilation roadway
2.1: under to tunnel
4: gas drainage coal hole.Without gas drainage pipe at aperture
8: gas drainage collects transport pipeline.Along the sensible ground of mine ventilation roadway, ground gas extraction pump is connected.In mine
In well airway, which collects transport pipeline and is sequentially connected circulating mash gas extraction pipeline, circulating mash gas extraction pump
10: the crack in coal (rock) layer
11: drill site coal road
13: circulating mash gas extraction pump
14: circulating mash gas gas injecting pipe
16: pressure fire dam combination
17: under to press tunnel
18: drill site coal road fire dam
Fig. 7 coal seam group equipressure circulating mash gas extraction system sectional view
In figure, 1 is coal seam；2 be mine ventilation roadway, in circulating mash gas extraction pump and its air inlet it is sequentially connected
Circulating mash gas extraction pipeline, the circulating mash gas that gas drainage collects transport pipeline and its gas outlet connects in mine ventilation roadway
Gas injecting pipe such as Fig. 3, is not drawn into；4 be gas drainage coal Kong Zuhe；8 collect transport pipeline for gas drainage；10 is in coal (rocks)
Crack；16 be isobaric fire dam combination；21 be ground gas extraction pump；27 be the inclined shaft cylinder in coal seam group floor strata；28
For horizontal drill site rock gangway.
Fig. 8 coal seam group presses gas drainage coal hole layout drawing in the coal seam of circulating mash gas extraction system
In figure, 1 is coal seam；8 collect transport pipeline for gas drainage；11 be drill site coal road；28 be horizontal drill site rock gangway；29
Gas drainage drill site combination 30 for fan transfer is the gas drainage coal Kong Zuhe of parallel cloth hole.
The ground installation figure of Fig. 9 circulating mash gas extraction pump circulating mash gas extraction system in the mine on ground
In figure, 2 be mine ventilation pipeline；8 be gas drainage transport pipeline；14 be circulating mash gas gas injecting pipe；40 be ground
Face；41 be ground gas extraction pump；42 be circulating mash gas extraction pump；43 collect transport pipeline for ground gas extraction；44 be watt
This user pipe 45 is ground circulating mash gas extraction pipeline；46 be ground circulating mash gas gas injecting pipe.In figure, arrow is in pipeline
Gas flow direction.
Figure 10 takes over the production gas treatment technique coal road location drawing
In figure, 1 is coal seam；4 be gas drainage coal hole；47 be production gas treatment technique coal road；48 be to take over production drilling gas
Field coal road；49 be the gas drainage coal bore end for taking over the production gas treatment technique coal road above production gas treatment technique in coal seam；50
For the gas drainage coal bore end for taking over the production gas treatment technique coal road below production gas treatment technique coal road in coal seam；51 be to take over
Produce the gas drainage coal hole of gas treatment technique coal road.
Isobaric circulating mash gas extraction system, reconstruction in mine are built in the existing mine gas extraction system of specific embodiment, increasing
For gas production device contained by the coal seam with circulating mash gas extraction pump.Existing coal mine has mine gas extraction system, by sensible
Long watt of the mine ventilation roadway on ground, the drill site coal road of the ventilation of long several kms, a plurality of several hundred rice for constructing from drill site coal road
This extraction coal Kong Zuhe, the gas drainage pipe for connecting each gas drainage coal hole are simultaneously taken out along the gas on the sensible ground of mine ventilation roadway
Harvesting collection transport pipeline, ground gas extraction pump are sequentially connected composition.Technology innovation project is as follows:
--- isobaric circulating mash gas extraction system in construction mine.In installation circulating mash gas extraction in mine ventilation roadway
Pump, circulating mash gas extraction pipeline, along the circulating mash gas gas injecting pipe of drill site coal road overall length.Circulating mash gas gas injecting pipe is in drill site coal
There are multiple ventholes in lane.
--- construction drill site coal road drainage system.Gas drainage in drill site coal road collects the low-lying place of transport pipeline and connects water
Case has immersible pump in water tank.The low-lying water accumulation part in tunnel, if immersible pump.The sensible mine ventilation of power supply line, drainpipe of each immersible pump
Tunnel, power switch is in mine ventilation roadway.
--- finally, building isobaric fire dam combination in connecting at mine ventilation roadway in drill site coal road.
Claims (10)
1. gas production device contained by the coal seam with circulating mash gas extraction pump, gas contained by working seam, it is characterized in that: mine is logical
Air way road, isobaric fire dam and its crack in periphery rock (coal) layer, drill site coal road, a plurality of gas drainage coal hole in coal seam according to
It is secondary to be connected；Gas drainage pipe is injected at the aperture in every gas drainage coal hole, the gap between pipe and hole wall is full of filling material
Material is blocked, and gas drainage coal Kong Zuhe is constituted；In mine ventilation roadway, have in monitoring mine airway and drill site coal road
The equipment of air pressure and the transmission facilities of pressure information, above equipment and facility constitute isobaric fire dam group together with isobaric fire dam
It closes；The gas drainage of each gas drainage pipe of connection collects transport pipeline in drill site coal road, and it is logical to pass through the isobaric sensible mine of fire dam
Air way road, and behind the sensible ground of mine ventilation roadway, connect the air inlet of ground gas extraction pump；In mine ventilation roadway,
There is circulating mash gas extraction pump, air inlet is sequentially connected circulating mash gas extraction pipeline, gas drainage collects transport pipeline, outlet
Mouth is attached across the circulating mash gas gas injecting pipe of the sensible drill site coal road of isobaric fire dam；There is total gas couette on above-mentioned pipeline
Meter, Gas-Flow meter, air flow meter, gas flow control valve, gas density meter；Isobaric circulating mash gas extraction system in mine
System, by circulating mash gas extraction pump gas outlet, circulating mash gas air injection pipe, drill site coal road, connection drill site coal road and gas drainage coal hole
Cracks in coal seam, gas drainage coal hole, gas drainage pipe, gas drainage collect transport pipeline, circulating mash gas extraction pipeline, circulation
Gas drainage pump steam inlet is sequentially connected composition, in addition gas drainage, which collects transport pipeline, connects ground gas extraction pump, constitutes
Gas production device contained by coal seam with circulating mash gas extraction pump.
2. gas production device contained by the coal seam as described in claim 1 with circulating mash gas extraction pump, contained watt of working seam
This, it is characterized in that: opening two pumps is ground gas extraction pump and circulating mash gas extraction pump, in drill site coal road and mine ventilation roadway
Interior Pressure monitoring equipment display number is equal.
3. gas production device contained by the coal seam with circulating mash gas extraction pump as described in claim 1 and 2, working seam institute
There is immersible pump in water tank it is characterized in that: gas drainage, which collects the low-lying place of transport pipeline, connects water tank containing gas；Drill site coal road is low
Hollow water accumulation part has immersible pump；The drainpipe and service cable that above-mentioned immersible pump is connected, sensible mine ventilation roadway.
4. gas production device contained by the coal seam with circulating mash gas extraction pump as described in claim 1 and 2, working seam institute
Containing gas, it is characterized in that: the interior production gas treatment technique coal road of mine is taken over it, production gas treatment technique coal road is adjacent, and the latter is at the former
Gas drainage coal bore end top coal seam in or lower section coal seam in not with production gas treatment technique, coal road gas drainage coal hole
It is connected.
5. gas production device contained by the coal seam with circulating mash gas extraction pump as described in claim 1 and 2, working seam institute
Containing gas, it is characterized in that: being located at the mine ventilation roadway below coal seam in rock stratum, isobaric fire dam combination and isobaric fire dam week
Crack in the rock stratum of side, on crack into isobaric tunnel, drill site coal road fire dam and its periphery rock stratum, drill site coal road, from boring
A plurality of gas drainage coal hole is sequentially connected in the coal seam of field coal road construction；The air inlet mouth of pipe that gas drainage collects transport pipeline is located at
Drill site coal road is interior, pass through drill site coal road fire dam and the sensible mine ventilation roadway of isobaric fire dam simultaneously, along mine ventilation roadway is led to
Ground gas extraction pump is connected after up to ground；The air inlet of circulating mash gas extraction pump in mine ventilation roadway is sequentially connected circulation
Gas pumping pipeline, gas drainage collect transport pipeline, and the outlet mouth of pipe of circulating mash gas extraction pump connects circulating mash gas air injection pipe
Road, the outlet mouth of pipe of circulating mash gas gas injecting pipe, which is located at, presses in tunnel；Isobaric circulating mash gas extraction system in mine, by recycling
Gas drainage pump out port, circulating mash gas gas injecting pipe, on splitting into isobaric tunnel, drill site coal road fire dam periphery rock stratum
Gap, drill site coal road, gas drainage are collected transport pipeline, circulating mash gas extraction pipeline, circulating mash gas extraction pump steam inlet and are successively connected
Connect composition.
6. gas production device contained by the coal seam with circulating mash gas extraction pump as described in claim 1 and 2, working seam institute
Containing gas, it is characterized in that: being located at the mine ventilation roadway in coal seam, being lower to tunnel, isobaric fire dam combination and isobaric fire dam
Crack in the rock stratum of periphery, horizontal isobaric tunnel, drill site coal road fire dam and its crack in the rock stratum of periphery, on to rock gangway, bore
A plurality of gas drainage coal hole in field coal road, coal seam, which is sequentially connected, to be connect；Drill site coal road, gas drainage well, ground gas drainage tube
Road, ground gas extraction pump, gas user pipe are sequentially connected；Circulating mash gas extraction system is pressed in mine, by mine ventilation
Circulating mash gas extraction pump gas outlet, outlet mouth of pipe in tunnel are located at circulating mash gas gas injecting pipe, water in horizontal isobaric tunnel
Equality pressure tunnel, the crack in the rock stratum of drill site coal road fire dam periphery, on drill site coal road and followed to rock gangway, drill site coal road, connection
Circulating mash gas extraction pipeline, the circulating mash gas extraction pump steam inlet of ring gas drainage pump steam inlet are sequentially connected composition.
7. gas production device contained by the coal seam with circulating mash gas extraction pump as described in claim 1 and 2, working seam institute
Containing gas, it is characterized in that: mine ventilation roadway in rock stratum above coal seam lower to tunnel, isobaric fire dam combination and waits
Press fire dam and its crack in the rock stratum of periphery, it is lower to press tunnel, the crack in the rock stratum of drill site coal road fire dam periphery, bore
A plurality of gas drainage coal hole, which is sequentially connected, in field coal road, coal seam connects；There is gas drainage to collect transport pipeline sensible from drill site coal road
Mine ventilation roadway connects ground gas extraction pump along the sensible ground of mine ventilation roadway；Isobaric circulating mash gas extraction in mine
System, from mine ventilation roadway circulating mash gas extraction pump gas outlet, outlet mouth of pipe be located at it is lower to press tunnel in following
Ring gas gas injecting pipe, it is lower to pressure tunnel, crack, drill site coal road, gas drainage in the rock stratum of drill site coal road fire dam periphery
It collects transport pipeline, the circulating mash gas extraction pipeline in mine ventilation roadway, circulating mash gas extraction pump steam inlet and is sequentially connected structure
At.
8. gas production device contained by the coal seam with circulating mash gas extraction pump as described in claim 1 and 2, working seam institute
Containing gas, it is characterized in that: being located at the mine ventilation inclined shaft cylinder and mine ventilation rock gangway, isobaric fire dam below coal seam group in rock stratum
Combination and crack in isobaric fire dam periphery rock stratum, across the horizontal drill site rock gangway in each coal seam of coal seam group, by horizontal drill site rock
The head that a plurality of gas drainage coal hole combination for showing off fan transfer in each coal seam of coal seam group of lane construction is constituted adopts drill site and successively connects
It connects；Gas drainage along horizontal drill site rock gangway overall length collects transport pipeline, connects each gas drainage coal Kong Zuhe in each coal seam
Gas drainage pipe, and pass through isobaric fire dam, mine ventilation rock gangway, the sensible ground of mine ventilation inclined shaft cylinder, connect ground watt
This extraction pump；Isobaric circulating mash gas extraction system in mine, by mine ventilation rock gangway circulating mash gas extraction pump gas outlet, go out
Gas tube orifice is located at circulating mash gas gas injecting pipe in horizontal drill site rock gangway, horizontal drill site rock gangway, the horizontal drill site rock gangway of connection and each
Crack, gas drainage coal hole, gas drainage pipe, gas drainage collection transport pipeline, mine are logical in the coal seam in gas drainage coal hole
Circulating mash gas extraction pipeline, circulating mash gas extraction pump steam inlet in wind rock gangway are sequentially connected composition.
9. gas production device contained by the coal seam with circulating mash gas extraction pump as described in claim 1 and 2,8, working seam
Contained gas, it is characterized in that: the drill site coal road in horizontal drill site rock gangway connection each coal seam of coal seam group, constructs this coal from drill site coal road
A plurality of gas drainage coal Kong Zuhe parallel to each other in layer, the gas drainage Guan Lian of each gas drainage coal hole combination in each coal seam
Gas drainage in water receiving flat drill field rock gangway and each coal seam drill site coal road collects transport pipeline.
10. gas production device contained by the coal seam with circulating mash gas extraction pump as described in right 1 and 2, contained watt of working seam
This, it is characterized in that: circulating mash gas extraction pump is set to ground, air inlet is sequentially connected ground circulating mash gas extraction pipeline, ground
Gas drainage collect transport pipeline, ground gas extraction pump, gas outlet is sequentially connected ground circulating mash gas gas injecting pipe, mine
Circulating mash gas gas injecting pipe in well airway.
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