CN103837363B - Gas dynamical disaster affects pilot system and method to mine ventilation network - Google Patents
Gas dynamical disaster affects pilot system and method to mine ventilation network Download PDFInfo
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Abstract
The invention discloses a kind of gas dynamical disaster affects pilot system and method to mine ventilation network, belongs to coal mine gas Disaster Study field. System is made up of inflator module, dynamic action module, simulation pipe network module and metering module, and wherein inflator module comprises gas gas cylinder, air bottle, pressure-reducing valve, magnetic valve, flowmeter, vavuum pump, air compressor machine and valve; Dynamic action module comprises explosive container, Pressure gauge, igniting probe, igniter, diaphragm and blower fan; Simulation pipe network module comprises simulation pipeline, connecting pipe, ring flange, bolt and nut, thin slice and rubber band; Metering module comprises pressure sensor, data collecting instrument and computer. Major advantage is by grasping the propagation characteristic of gas pressure in pipe network, finding the impact of gas dynamical disaster on mine ventilation network, for rescuing and provide support after gas dynamical disaster control and accident.
Description
Technical field
The present invention relates to coal mine methane drainage and utilization project field, especially relating to a kind of gas dynamical disaster affects mine ventilation networkPilot system and method.
Background technology
Along with the structuring adjustment of coal industry, the coal production high-efficiency intensifying of marching toward, mining depth also constantly increases annual,The gas dynamical disasters such as gas explosion, Gas Outburst, gas incline to, gas extrusion also present many new features, are coalThe focus of industry development and difficulties are the keys of restriction safety of coal mines High-efficient Production. According to statistics, the particularly serious accident in collieryIn, gas dynamical disaster accident frequency accounts for 64%, and death toll accounts for 71%; Wherein, the number of times of gas explosion accidentAccount for again 92% of gas dynamical disaster accident, death toll accounts for 94%. Gas dynamical disaster can destroy coal mine production system,Cause a tremendous loss of lives, as colliery, Liaoning Province on the 14th Fuxin mining industry February in 2005 (group) Sun Jia gulf occur together wattThis explosion accident, causes 214 people's death, and 30 people are injured, 4968.9 ten thousand yuan of direct economic losses, and wherein gas explosion is directly drawnThe death toll rising only has 30%, is more to lead because the percussion after gas explosion and impact cause that ventilation network destroysThe injures and deaths that cause. Visible, research taking gas explosion as main gas dynamical disaster on the impact of mine ventilation network to effective control coalAfter ore deposit accident and accident, effectively rescue is significant.
Summary of the invention
For the problems referred to above, the object of the invention is to carry a kind of gas dynamical disaster that supplies affects pilot system to mine ventilation networkAnd method, to grasp the impact of gas dynamical disaster on mine ventilation network, after preventing and treating coal mining accident and accident, there is rescue to provideSupport.
For achieving the above object, the present invention is by the following technical solutions:
Gas dynamical disaster affects pilot system and method to mine ventilation network, its system by inflator module, dynamic action module,Simulation pipe network module and metering module composition, inflator module comprise gas gas cylinder, air bottle, pressure-reducing valve, magnetic valve, flowmeter,Vavuum pump, air compressor machine and valve; Dynamic action module comprises explosive container, Pressure gauge, igniting probe, igniter and diaphragm;Simulation pipe network module comprises simulation pipeline, connecting pipe, ring flange, bolt and nut, thin slice and rubber band; Metering module comprisesPressure sensor, data collecting instrument and computer; Described gas gas cylinder, air bottle are respectively by pressure-reducing valve, magnetic valve, flowMeter is connected in explosive container, and valve a is set in junction; Described vavuum pump, air compressor machine are connected with explosive container by valve b;Described explosive container also arranges Pressure gauge, igniting probe and an outlet, and wherein igniting probe is connected with igniter, and outlet is passed throughRing flange, bolt and nut are connected with simulation pipeline, and between the outlet of explosive container and simulation pipeline, diaphragm are set; Described mouldIntend pipeline and connecting pipe and form simulation pipe network by ring flange and unit bolt nut, at the end outlet place of pipe network, thin slice is set,Rubber band ties up to thin slice on simulation tunnel; Described pressure sensor is arranged in the middle of each joint simulation tunnel; Described blower fan is arranged onThe exit in one of them simulation tunnel.
Further, described gas gas cylinder and air bottle are gas cylinder, fixed placement, prevent to topple over.
Further, described vavuum pump and air compressor machine share a gas circuit, in the time of simulation gas explosion dynamic disaster, adopt vavuum pump withExplosive container is connected, and inclining at simulation Gas Outburst, gas adopts air compressor machine and explosive container phase while extruding dynamic disaster with gasConnect etc.
Further, described explosive container is cylindrical metal bucket; Described simulation pipeline and connecting pipe are iron pipe, all according to test feelingsCondition is determined number, and wherein the simulation pipeline of different-diameter achieves a butt joint by connecting pipe, the bent angle of connecting pipe have 30 °, 45 °,60 °, 90 °, 120 ° five kinds.
Further, described ring flange is undertaken fastening by bolt and nut, adds two O type pads between two ring flanges at diaphragm placeCircle, adds an O type packing ring, to guarantee air-tightness between two ring flanges of other each junctions; Described diaphragm is plastic sheet,Thickness arranges according to the initial plane of weakness characteristic of the gas dynamical disaster of simulation.
Further, described thin slice is the scraps of paper or thin Polypropylence Sheet, ties up to the simulation pipeline exit of pipe network end with rubber band, rises and replacesIn generation, is the effect of the resistance of ducting at a distance; For the simulation pipe network that has blower fan, there is a simulation pipe outlet for empty, for air intake.
Further, described blower fan is exhaust fan, in the time of the distinguished and admirable in the same way pipe network of simulation, different distinguished and admirable pipe network, adopts.
Its test method has two kinds, and 1) in the time of simulation gas explosion dynamic disaster:
1. simulation pipe network is set up, checked that whether all ring flanges and bolt and nut be fastening, whether diaphragm is fastened on two O type packing ringsBetween, with rubber band, thin slice is tied up to each simulation pipeline exit of pipe network end;
2. check that whether intact the pressure sensor on all simulation pipelines is fastening with installation, and pressure sensor is numbered, by compilingNumber order is connected in turn on data collecting instrument, and data collecting instrument is connected with computer;
3. keep valve a closed condition, open valve b, vavuum pump is connected in to gas circuit, open vavuum pump explosive container is vacuumized,Valve-off b afterwards;
4. open valve a, more successively open gas gas cylinder and air bottle, pressure-reducing valve a and b, magnetic valve a and b, flowmeter a and b,The gas density that regulates gas and air to enter explosive container, valve-off a afterwards;
5. open computer and data collecting instrument, open blower fan for the simulation pipe network that has blower fan, igniting probe is connected with igniter,Igniter is lighted a fire to igniting probe, and explosion wave breaks through diaphragm and transmits in pipe network, the pressure that each pressure sensor recordsBy data collecting instrument record;
6. by data analysis that each pressure sensor is surveyed and processing, find the dynamic action characteristic of gas explosion to simulation pipe network,And then obtain the impact of gas explosion dynamic disaster on mine ventilation network;
2) incline to while extruding dynamic disaster with gas at simulation Gas Outburst, gas:
1. simulation pipe network is set up, checked that whether all ring flanges and bolt and nut be fastening, whether diaphragm is fastened on two O type packing ringsBetween, with rubber band, thin slice is tied up to each simulation pipeline exit of pipe network end;
2. check that whether intact the pressure sensor on all simulation pipelines is fastening with installation, and pressure sensor is numbered, by compilingNumber order is connected in turn on data collecting instrument, and data collecting instrument is connected with computer;
3. keep valve a closed condition, open valve b, air compressor machine is connected in to gas circuit;
4. open computer and data collecting instrument, open blower fan for the simulation pipe network that has blower fan, open air compressor machine explosive container is notedEnter compressed air, the variation of observed pressure table, when compressed-air actuated pressure reaches a certain value in explosive container, can break through diaphragmIn pipe network, transmit, the pressure that each pressure sensor records is by data collecting instrument record;
5. by data analysis that each pressure sensor is surveyed and processing, find Gas Outburst, gas to incline and with gas to extrude mouldIntend the dynamic action characteristic of pipe network, and then the impact of gas explosion dynamic disaster on mine ventilation network.
The invention has the beneficial effects as follows: the present invention can carry out dissimilar gas dynamical disaster to mine ventilation network impact research;And can carry out gas dynamical disaster to different mine ventilation networks by the connected mode of adjusting different simulation pipelines and connecting pipeImpact research, comprise different pipe networks combinations, the combination of different wind direction, have the multiple ventilation network such as wind and calm combination.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the structural representation of the embodiment of the present invention 2.
Fig. 3 is the structural representation of the embodiment of the present invention 3.
Fig. 4 is the structural representation of the embodiment of the present invention 4.
Wherein: 1-gas gas cylinder, 2-air bottle, 3 (a, b)-pressure-reducing valve, 4 (a, b)-magnetic valve, 5 (a, b)-flowmeter,6 (a, b)-valve, 7-explosive container, 8-vavuum pump, 9-air compressor machine, 10-Pressure gauge, 11-diaphragm, 12-igniting is visitedPin, 13-igniter, 14-simulation pipeline, 15-ring flange, 16-bolt and nut, 17-pressure sensor, 18-connectPipeline, 19-thin slice (being equivalent to long roadway resistance force), 20-rubber band, 21-blower fan.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further elaborated.
As being depicted as gas dynamical disaster of the present invention, Fig. 1～4 mine ventilation network is affected to the embodiment 1～4 of pilot system and methodStructural representation, wherein Fig. 1, Fig. 2 are the calm or gentle breeze ventilation network situation of simulation, Fig. 3, Fig. 4 are logical for simulating different wind directionsWind network scenario; The gas dynamical disaster that each embodiment provides affects pilot system by inflator module, power to mine ventilation networkEffect module, simulation pipe network module and metering module composition, wherein inflator module comprises gas gas cylinder 1, air bottle 2, pressure-reducing valve3, magnetic valve 4, flowmeter 5, vavuum pump 8, air compressor machine 9 and valve 6; Dynamic action module comprises explosive container 7, pressureTable 10, igniting probe 12, igniter 13 and diaphragm 11; Simulation pipe network module comprise simulation pipeline 14, connecting pipe 18,Ring flange 15, bolt and nut 16, thin slice 19 and rubber band 20; Metering module comprise pressure sensor 17, data collecting instrument andComputer; Described gas gas cylinder 1, air bottle 2 are connected in explosive container by pressure-reducing valve 3, magnetic valve 4, flowmeter 5 respectively7, valve 6a is set in junction; Described vavuum pump 8, air compressor machine 9 are connected with explosive container 7 by valve 6b; Described quick-friedFried container 7 also arranges Pressure gauge 10, igniting probe 12 and an outlet, and wherein igniting probe 12 is connected with igniter 13,Outlet is connected with simulation pipeline 14 by ring flange 15, bolt and nut 16, and the outlet of explosive container 7 with simulate pipeline 14Between diaphragm 11 is set; Described simulation pipeline 14 is combined to form mould with connecting pipe 18 by ring flange 15 and bolt and nut 16Intend pipe network, at the end outlet place of pipe network, thin slice 19 is set, rubber band 20 ties up to thin slice 19 on simulation tunnel 14; DescribedPressure sensor 17 is arranged in the middle of each joint simulation tunnel 14; Described blower fan 21 is arranged on going out of one of them simulation tunnel 14Mouth place.
Described gas gas cylinder 1 and air bottle 2 are gas cylinder, fixed placement; Described vavuum pump 8 and air compressor machine 9 share oneBar gas circuit adopts vavuum pump 8 to be connected with explosive container 7 in the time of simulation gas explosion dynamic disaster, simulate Gas Outburst, wattThis inclines to gas and extrudes and adopt when dynamic disaster air compressor machine 9 to be connected with explosive container 7 etc.; Described explosive container 7 is cylindricalMetal bucket; Described simulation pipeline 14 and connecting pipe 18 are iron pipe, all determine number according to test situation, wherein different-diameterSimulation pipeline 14 achieve a butt joint by connecting pipe 18, the bent angle of connecting pipe 18 have 30 °, 45 °, 60 °, 90 °,120 ° five kinds, can simulate the connection angle in various tunnels in colliery; Described ring flange 15 is undertaken fastening by bolt and nut 16,Between two ring flanges 15 at diaphragm 11 places, add two O type packing rings, between two ring flanges 15 of other each junctions, addAn O type packing ring, to guarantee air-tightness; Described diaphragm 11 is plastic sheet, and thickness is initial according to the gas dynamical disaster of simulationPlane of weakness characteristic arranges; Described thin slice 19 is the scraps of paper or thin Polypropylence Sheet, and the simulation pipeline 14 that ties up to pipe network end with rubber band 20 goes outMouth place, works to substitute the resistance of ducting at a distance; For the simulation pipe network that has blower fan 21, there are 14 outlets of a simulation pipeline to beSky, for air intake; Described blower fan 21 is exhaust fan, in the time of the distinguished and admirable in the same way pipe network of simulation, different distinguished and admirable pipe network, adopts.
In the time that each embodiment simulates gas explosion dynamic disaster:
1. simulation pipe network is set up, checked that whether all ring flanges 15 are fastening with bolt and nut 16, whether diaphragm 11 is fastened on twoBetween O type packing ring, with rubber band 20, thin slice 19 is tied up to each simulation pipeline 14 exits of pipe network end;
2. check that whether intact the pressure sensor 17 on all simulation pipelines 14 is fastening with installation, and pressure sensor 17 is compiledNumber, order is connected in turn on data collecting instrument by number, and data collecting instrument is connected with computer;
3. keep valve 6a closed condition, open valve 6b, vavuum pump 8 is connected in to gas circuit, open vavuum pump 8 to explosive container 7Vacuumize, afterwards valve-off 6b;
4. open valve 6a, more successively open gas gas cylinder 1 and air bottle 2, pressure-reducing valve 3a and 3b, magnetic valve 4a and 4b, flowMeter 5a and 5b, the gas density that regulates gas and air to enter explosive container 7, valve-off 6a afterwards;
5. open computer and data collecting instrument, for 3 or 4 unlatching blower fans 21 of embodiment, by igniting probe 12 and igniter 13Connect, igniter 13 is lighted a fire to igniting probe 12, and explosion wave breaks through diaphragm 11 and transmits in pipe network, and each pressure passesThe pressure that sensor 17 records is by data collecting instrument record;
6. by each pressure sensor 17 data analysis of surveying and processing, find the dynamic action spy of gas explosion to simulation pipe networkProperty, and then obtain the impact of gas explosion dynamic disaster on mine ventilation network;
Simulating Gas Outburst, gas at each embodiment inclines to while extruding dynamic disaster with gas:
1. simulation pipe network is set up, checked that whether all ring flanges 15 are fastening with bolt and nut 16, whether diaphragm 11 is fastened on twoBetween O type packing ring, with rubber band 20, thin slice 19 is tied up to each simulation pipeline 14 exits of pipe network end;
2. check that whether intact the pressure sensor 17 on all simulation pipelines 14 is fastening with installation, and pressure sensor 17 is compiledNumber, order is connected in turn on data collecting instrument by number, and data collecting instrument is connected with computer;
3. keep valve 6a closed condition, open valve 6b, air compressor machine 9 is connected in to gas circuit;
4. open computer and data collecting instrument, for 3 or 4 unlatching blower fans 21 of embodiment, open air compressor machine 9 to explosive container 7Injecting compressed air, the variation of observed pressure table 10, when in explosive container 7, compressed-air actuated pressure reaches a certain value, can rushRupture of membranes sheet 11 transmits in pipe network, and the pressure that each pressure sensor 17 records is by data collecting instrument record;
5. by each pressure sensor 17 data analysis of surveying and processing, it is right to find Gas Outburst, gas to incline with gas extrusionThe dynamic action characteristic of simulation pipe network, and then the impact of gas explosion dynamic disaster on mine ventilation network.
Finally it should be noted that above content is only for technical scheme of the present invention is described, but not its protection domain is limitSystem, those of ordinary skill in the art carry out certain amendment to ventilation network combining form of the present invention, all do not depart from the technology of the present inventionThe effective range of scheme.
Claims (8)
1. gas dynamical disaster affects pilot system to mine ventilation network, it is characterized in that, this system is by inflator module, dynamic actionModule, simulation pipe network module and metering module composition, wherein inflator module comprises gas gas cylinder (1), air bottle (2), decompressionValve (3), magnetic valve (4), flowmeter (5), vavuum pump (8), air compressor machine (9) and valve (6); Dynamic action module bagDraw together explosive container (7), Pressure gauge (10), igniting probe (12), igniter (13) and diaphragm (11); Simulation pipe network moduleComprise simulation pipeline (14), connecting pipe (18), ring flange (15), bolt and nut (16), thin slice (19) and rubber band(20); Metering module comprises pressure sensor (17), data collecting instrument and computer; Described gas gas cylinder (1), air bottle(2) be connected in explosive container (7) by pressure-reducing valve (3), magnetic valve (4), flowmeter (5) respectively, arrange in junctionThe first valve; Described vavuum pump (8), air compressor machine (9) are connected with explosive container (7) by the second valve; Described blast is heldDevice (7) also arranges Pressure gauge (10), igniting probe (12) and an outlet, wherein igniting probe (12) and igniter (13)Connect, outlet is connected with simulation pipeline (14) by ring flange (15), bolt and nut (16), and in explosive container (7)Outlet and simulation pipeline (14) between diaphragm (11) is set; Described simulation pipeline (14) passes through method with connecting pipe (18)Blue dish (15) and bolt and nut (16) are combined to form simulation pipe network, at the end outlet place of pipe network, thin slice (19), rubber are setMuscle (20) ties up to thin slice (19) on simulation pipeline (14); Described pressure sensor (17) is arranged on each joint simulation pipeline(14) in the middle of; Described blower fan (21) is arranged on the exit of one of them simulation pipeline (14).
2. gas dynamical disaster according to claim 1 affects pilot system to mine ventilation network, it is characterized in that, described wattThis gas cylinder (1) and air bottle (2) are gas cylinder, fixed placement.
3. gas dynamical disaster according to claim 1 affects pilot system to mine ventilation network, it is characterized in that, described trueEmpty pump (8) and air compressor machine (9) share a gas circuit, adopt vavuum pump (8) and blast in the time of simulation gas explosion dynamic disasterContainer (7) is connected, and inclining at simulation Gas Outburst, gas adopts air compressor machine (9) and blast while extruding dynamic disaster with gasContainer (7) is connected.
4. gas dynamical disaster according to claim 1 affects pilot system to mine ventilation network, it is characterized in that, described quick-friedFried container (7) is cylindrical metal bucket; Described simulation pipeline (14) and connecting pipe (18) are iron pipe, all according to test situationDetermine number, wherein the simulation pipeline (14) of different-diameter achieves a butt joint by connecting pipe (18), connecting pipe (18)Bent angle have 30 °, 45 °, 60 °, 90 °, 120 ° five kinds.
5. gas dynamical disaster according to claim 1 affects pilot system to mine ventilation network, it is characterized in that, described methodBlue dish (15) is undertaken fastening by bolt and nut (16), between two ring flanges (15) of locating, add two at diaphragm (11)O type packing ring, adds an O type packing ring between two ring flanges (15) of other each junctions; Described diaphragm (11) is plasticsSheet, thickness arranges according to the initial plane of weakness characteristic of the gas dynamical disaster of simulation.
6. gas dynamical disaster according to claim 1 affects pilot system to mine ventilation network, it is characterized in that, described thinSheet (19) is the scraps of paper or thin Polypropylence Sheet, ties up to simulation pipeline (14) exit of pipe network end with rubber band (20); ForThere is the simulation pipe network of blower fan (21), have a simulation pipeline (14) outlet for empty, for air intake.
7. according to the gas dynamical disaster described in claim 1 or 6, mine ventilation network is affected to pilot system, it is characterized in that, instituteStating blower fan (21) is exhaust fan.
8. gas dynamical disaster affects test method to mine ventilation network, it is characterized in that, described test method has two kinds, and 1)When simulation gas explosion dynamic disaster:
1. simulation pipe network is set up, check whether all ring flanges (15) and bolt and nut (16) fastening, diaphragm (11) whetherBe fastened between two O type packing rings, with rubber band (20), thin slice (19) tied up to each simulation pipeline (14) of pipe network endExit;
2. check that whether intact the pressure sensor (17) on all simulation pipelines (14) is fastening with installation, and to pressure sensor (17)Be numbered, order is connected in turn on data collecting instrument by number, and data collecting instrument is connected with computer;
3. keep the first valve closing state, open the second valve, vavuum pump (8) is connected in to gas circuit, open vavuum pump (8) rightExplosive container (7) vacuumizes, and closes afterwards the second valve;
4. open the first valve, more successively open gas gas cylinder (1) and air bottle (2), the first pressure-reducing valve and the second pressure-reducing valve, firstMagnetic valve and the second magnetic valve, first flow meter and the second flowmeter, regulate gas and air to enter the gas of explosive container (7)Concentration, closes the first valve afterwards;
5. open computer and data collecting instrument, open blower fan (21) for the simulation pipe network that has blower fan (21), by igniting probe (12)Be connected with igniter (13), igniter (13) is to igniting probe (12) igniting, and explosion wave breaks through diaphragm (11) and existsIn pipe network, transmit, the pressure that each pressure sensor (17) records is by data collecting instrument record;
6. by each pressure sensor (17) data analysis of surveying and processing, find gas explosion to do the power of simulation pipe networkBy characteristic, and then obtain the impact of gas explosion dynamic disaster on mine ventilation network;
2) incline to while extruding dynamic disaster with gas at simulation Gas Outburst, gas:
1. simulation pipe network is set up, check whether all ring flanges (15) and bolt and nut (16) fastening, diaphragm (11) whetherBe fastened between two O type packing rings, with rubber band (20), thin slice (19) tied up to each simulation pipeline (14) of pipe network endExit;
2. check that whether intact the pressure sensor (17) on all simulation pipelines (14) is fastening with installation, and to pressure sensor (17)Be numbered, order is connected in turn on data collecting instrument by number, and data collecting instrument is connected with computer;
3. keep the first valve closing state, open the second valve, air compressor machine (9) is connected in to gas circuit;
4. open computer and data collecting instrument, open blower fan (21) for the simulation pipe network that has blower fan (21), open air compressor machine (9)To explosive container (7) injecting compressed air, the variation of observed pressure table (10), treats in explosive container (7) compressed-air actuatedWhen pressure reaches a certain value, can break through diaphragm (11) and transmit in pipe network, the pressure that each pressure sensor (17) recordsBy data collecting instrument record;
5. by each pressure sensor (17) data analysis of surveying and processing, find Gas Outburst, gas to incline and with gas to pressGo out the dynamic action characteristic to simulation pipe network, and then the impact of gas explosion dynamic disaster on mine ventilation network.
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| CN106251766B (en) * | 2016-09-30 | 2022-03-22 | 西安科技大学 | Visual mine thermal power disaster smoke spreading simulation experiment table and experiment method |
| CN106200607B (en) * | 2016-09-30 | 2019-01-01 | 西安科技大学 | Experimental method based on heat power disaster multi-parameter temporal-spatial evolution analyzing experiment table |
| CN106644350A (en) * | 2016-12-19 | 2017-05-10 | 中国矿业大学(北京) | Experimental device for studying wind current motion state under various disaster-causing factors |
| CN107843620B (en) * | 2017-10-20 | 2020-10-13 | 安徽理工大学 | Method for testing coal mine underground gas explosion impact damage with different strengths |
| CN107860790B (en) * | 2017-10-20 | 2021-02-12 | 安徽理工大学 | Coal mine gas explosion shock wave acceleration mechanism test method |
| CN107859528B (en) * | 2017-10-20 | 2020-05-19 | 安徽理工大学 | Test method for inhibiting underground gas explosion of coal mine by cavity structure |
| CN111257022B (en) * | 2020-01-16 | 2022-05-10 | 中国人民解放军陆军工程大学 | Gas explosion simulation test device and system in underground comprehensive pipe gallery space |
| CN114060091B (en) * | 2021-11-11 | 2023-10-27 | 安徽理工大学 | Colliery gas explosion early warning protector |
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