CN101713297B - Method and equipment for suppressing gas from multiple continuous explosions - Google Patents
Method and equipment for suppressing gas from multiple continuous explosions Download PDFInfo
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- CN101713297B CN101713297B CN2009100923788A CN200910092378A CN101713297B CN 101713297 B CN101713297 B CN 101713297B CN 2009100923788 A CN2009100923788 A CN 2009100923788A CN 200910092378 A CN200910092378 A CN 200910092378A CN 101713297 B CN101713297 B CN 101713297B
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Abstract
The invention discloses a method and equipment for suppressing gas from multiple continuous explosions, which arranges a plurality of sensors and multiple sets of mechanical blocking and explosion suppressing devices controlled by the multiple sensors at the top parts of roadways in coal mines, uses the first detected shock wave signal or flame to start the multiple sets of blocking and explosion suppressing devices to lead one end of each of a blocking plate to fall down and suspend in the roadways for repeatedly blocking the shock wave and flame generated by the explosions step by step, thus effectively lowering destructive power brought by the explosion. The whole equipment has the advantages of simple structure, reliable performance, convenient installation, low cost and repeatable use; the blocking and explosion suppressing devices controlled by the sensors has flexible start and various modes, can control the destructive power of the explosions to be within a smaller range rapidly, reduce economic loss and casualties caused by the explosion, and are very suitable for popularization and application in coal mines of our country.
Description
Technical field
The present invention relates to a kind of utilize the porous foam ceramic material suppress gas repeatedly with the technical method and the equipment of blast continuously, belong to the safety of coal mines technical field.
Background technology
Coal is as the basic energy resource of country; Status in the national economic development is very important; In the disposable energy resource structure of China, coal accounts for more than 75%, and coal in China output reached 25.3 hundred million tons in 2007; Estimate middle period 21st century, coal in the primary energy structure shared ratio still difficulty be lower than 50%.Coal in China is a pit mining more than 95%, account for world well worker always the amount of adopting 40%.Because it is changeable that coal is composed the complicated geological condition of depositing, it is generally higher that content is deposited in the coal-bed gas tax, and the mine of exploitation all is highly gassy mine more than 30% now.Gas be a kind of with absorption and free two states be present in coal seam and the coal measure strata; Can gush out to the digging space during exploitation; Gas has burning, explosive nature thereof; After mixing with air or oxygen and reaching finite concentration,, can burn, explode in case run into the effect that certain intensity is brought out energy.Gas explosion also can be deposited on the deposition coal dust of bottom, tunnel and form more violent subsequent explosion by hoisting crane.Simple gas or coal-dust explosion take place seldom, and dust explosion accident usually is mixed explosion, acting in conjunction, and its extent of injury is more much bigger than single gas or coal-dust explosion.Gas Explosion Accidents in Coal Mines can cause ventilation system to be destroyed; Distinguished and admirable disorder; Toxic and harmful spreads, even continuous disaster accident takes place, and particularly down-hole complicated geological condition, space are narrow and small; More increase the destructive power of its blast process, brought great difficulty and danger for personnel in the pit and disaster relief work.
Existing reduce the gas explosion influence basin datonation-inhibition, flame proof is technological is divided into: passive type intercepts quick-fried technology and intercepts quick-fried technology automatically.
Passive type intercepts the general passive type flame proof canopy that refers to of quick-fried technology, and it is divided into passive type stone-dust barrier, tank canopy and water bag canopy, claims passive flame proof canopy again.Its action principle is: when gas explosion took place, under the positive pressure of shock wave effect that is ahead of the explosive flame propagation, the container that rock dust or water are housed on the flame proof canopy was crashed to pieces; Or thrown by blast wave, rock dust or water are dispersed come, in the tunnel, form the rock dust cloud sector or the water smoke district of a high concentration; When the explosive flame that lags behind shock wave propagates into this zone; Flame arrest Explosion suppressant by rock dust or water composition puts out, and stops blast to continue to propagate forward, prevents the expansion of gas explosion scope.But passive type flame proof canopy receives the restriction of its action principle; The propagation that must be installed in beyond quick-fried source 60m, 200m could effectively completely cut off blast with interior location; All to form dust cloud or water smoke time and flame movement speed incompatible because of the frame action to weak blast and stronger blast, and the flame proof effect is bad, can not effectively stop the propagation of blast; And short and wide, turn round many, narrow and the high inclination-angle tunnel in difficult installation, use extremely inconvenience.
Automatically intercept of the startup of quick-fried technology, control datonation-inhibition mechanism automatically through controller and spray high concentration flame arrest inhibiting agent in the predetermined area, put out the flame that just arrives by sensor realization explosion isolation device.Its structural principle is simple, the time precise control, and datonation-inhibition effect is obvious.And be the inhibitory action that increases the flame arrest inhibiting agent; In the flame arrest inhibiting agent, increase inert media,, reduce the activity of anakmetomeres with the chance that inert media minimizing combustible molecule and oxygen molecule combine; Cause combustion chain reaction to interrupt, also just becoming a new research direction and receiving everybody favor.
How on the basis of disclosing the concrete rule of gas explosion accident; Use its rule and accident principle to produce scientific method to its leading prevention, control; The concrete characteristics that particularly combine China's coal-mine; Design a kind ofly can use repeatedly, mechanical datonation-inhibition mode with low cost reduces the destruction that gas explosion accident brings, and just becomes the problem that the present invention will solve.
Summary of the invention
Datonation-inhibition is the important means that effectively weakens or control the lane gas from explosion disaster, in gas explosion control practice, has obtained extensive confirmation.In view of the actual conditions in the above-mentioned prior art field, the present invention aim to provide a kind of brand-new, highly versatile, can intercept repeatedly and continuous blast datonation-inhibition, and can use repeatedly, datonation-inhibition outstanding effect mechanical type intercepts explosion suppression device and method.
The present invention realizes through following technical scheme:
A kind of suppress gas repeatedly with the continuous method of blast, comprising:
Many covers mechanical type in coal mine roadway top sensor installation and control thereof intercepts explosion suppression device, intercepts to be connected with in the explosion suppression device to control the mechanical type baffler of routing up; Utilize sensor to survey gas explosion and the startup of control obstruct explosion suppression device; Baffler one end falls in the obstruct explosion suppression device after the startup, and the other end is connected and intercepts on the explosion suppression device, stops that the impact that the blast back produces involves the play of flame in the tunnel; After the explosion subsides, again the baffler movable end is connected and intercepts on the explosion suppression device the corresponding control sensor of opening again.
Diverse location in the tunnel is connected with multiple sensors, and multiple sensors intercepts the explosion suppression device startup based on declaring the many covers of knowing of detonator signal control at first, and many covers intercept explosion suppression device and laterally and/or vertically are arranged in the tunnel.
The Starting mode that said many covers intercept explosion suppression device comprises sequence starting and/or startup simultaneously along the tunnel.
Said sensor is surveyed the variation of temperature, flame and/or pressure in the gas explosion process respectively.
Said baffler is a piece connector that forms after multi-sheets is flexible coupling each other, and sheet material adopts the foamed ceramics sheet.
A kind of suppress gas repeatedly with the continuous equipment of blast; Comprise that sensor intercepts explosion suppression device with the many covers mechanical type that is connected with sensor; Sensor and many covers intercept explosion suppression devices and are separately fixed at the top, tunnel, and sensor is near the tunnel end that is prone to generation gas explosion or in the both sides that intercept explosion suppression device.
The quantity of said sensor is at least three, and three sensors are respectively temperature pick up, flame sensor and pressure sensor, and three sensors intercept the corresponding connection of explosion suppression device with many covers respectively.
Said many covers intercept explosion suppression device and become laterally and/or vertically to be arranged in the top, tunnel.
Said obstruct explosion suppression device comprises box body, gauge tap and baffler, and gauge tap and baffler are positioned at box body, and baffler one end is fixed on the box body, and the other end is connected on the gauge tap, and gauge tap is connected with sensor.
Said baffler comprises metallic framework and is serially connected in the polylith foamed ceramics sheet on the metallic framework with the wire order, and metallic framework one end is fixed on the box body, and the other end is connected with gauge tap.
Of the present invention a kind of suppress gas repeatedly with the method and the equipment of continuously blast; Through multiple sensors is installed at the top, tunnel detonator signal is surveyed; Can be effectively and in time detect gas explosion, reduce and have only the phenomenon of failing to report that a sensor occurs, many covers mechanical type of sensor control intercepts explosion suppression device; Utilize the sensor that detects detonator signal at first to control many covers and intercept explosion suppression device perhaps sequence starting simultaneously; Make the baffler that intercepts in the explosion suppression device fall and be suspended in the tunnel, hysteresis shock wave and flame that blast is produced stop step by step, repeatedly stop, thereby effectively reduces the destructive power that blast brings.Owing to baffler is a big piece connector that forms after polylith foamed ceramics sheet is flexible coupling each other; Self is heat-resisting, high temperature resistant; Have and suppress the characteristic that blast wave, flame, blast can be propagated; Hang can shock wave and flame produce and stop firmly, thereby not fragile, after blast finishes, also can be connected again to intercept in the explosion suppression device and reuse.Whole equipment configuration is simple, dependable performance, easy for installation, with low cost; Obstruct explosion suppression device under the sensor control starts flexibly; Starting mode can be carried out specific aim startup design according to different tunnel environment and the outstanding situation of gas, thereby in can being controlled at explosive damage power more apace, have reduced economic loss and casualties that blast causes; Realized gas is repeatedly exploded and the obstruct of blast continuously, be highly suitable in the China's coal-mine and promote, use.
Description of drawings
Fig. 1 is the structural representation sketch of equipment according to the invention.
The specific embodiment
Central idea of the present invention is to survey the variation of temperature, flame or pressure in the tunnel in the gas explosion process through sensor; The phenomenon of utilizing impact generated by explosion ripple and flame to lag behind; Start the mechanical type that is provided with in advance and intercept explosion suppression device; Baffler one end falls in the explosion suppression device through intercepting, and in the tunnel, forms and hangs skyborne obstruct baffle plate from level to level, stops and controls shock wave and propagation, the play of flame in the tunnel; Prevent the burning of secondary coal dust, blast, reduce the destructive power of gas explosion.
Of the present invention a kind of suppress gas repeatedly with the continuous method of blast, comprising:
The mechanical type that comprises temperature, flame and three kinds of sensors of pressure and control thereof at first is installed at the coal mine roadway top is intercepted explosion suppression device; The obstruct explosion suppression device is arranged in the top, tunnel with the mode of vertical arrangement; Sensor is positioned at the two ends that intercept explosion suppression device and keeps certain distance, and its distance can be decided according to environment in the tunnel and the outstanding situation of concrete gas.Narrower like the tunnel; Shock wave and flame propagation velocity are very fast in the gas explosion process; Can be suitably with sensor with intercept explosion suppression device apart from lengthening, and in the bigger tunnel of section, then can be with sensor with to intercept explosion suppression device near apart from transferring; Can in time fall the purpose that shock wave and flame effectively intercept, intercept fast to reach the quick-fried device of obstruct.The mechanical type of three kinds of sensors and control thereof intercepts explosion suppression device order discharging each other; Sensor is uninterruptedly monitored the temperature in the tunnel, flame or pressure; Generally sensor is positioned at mechanical type and intercepts quick-fried device two ends foremost, and no matter which end of tunnel is blasted, and can both in time trigger mechanical type and intercept quick-fried device; And baffler fallen to tunnel central authorities, guarantee the validity and the promptness of Monitoring and Controlling process.
The obstruct plate bursting that intercepts explosion suppression device is a piece connector that forms after multi-sheets is flexible coupling each other; The obstruct plate bursting that is flexible coupling can be out of shape by free bend; Increased the pliability of baffler; The obstruct process can not formed directly stop process firmly, avoid forming new disaster or baffler and damage.Board selection is high temperature resistant, anti-burning, intensity are big, have certain thickness foamed ceramics sheet, and its quality is light, Stability Analysis of Structures, and durability and versatility be good, can use repeatedly.
Intercept to have in the explosion suppression device and can control the mechanical type baffler and hurtle down, connect the mode of pegging graft fast that adopts, intercept the control that explosion suppression device receives the sensor sensing signal, be at any time and treat starting state to the mechanical connecting device of tunnel central authorities.Because whole device all is installed in the top, tunnel, can not influence normal work, production.During installation sensor is intercepted the corresponding connection of explosion suppression device with many covers of its control.
When gas explosion takes place when; The acute variation of sensor sensing temperature, flame or pressure in the tunnel; The sensor that detects detonator signal the earliest sends induced signal and triggers the mechanical type obstruct explosion suppression device corresponding with it, and baffler one end therefrom falls simultaneously in many cover obstruct explosion suppression devices, and the other end still is connected on the fastening devices at top, tunnel; Thereby in the tunnel, form Pork-pieces transfer barrier, stop that the impact that the blast back produces involves flame play in the tunnel.Calculate in advance owing to intercept the start-up time of explosion suppression device, is less than and impacts the time of involving flame arrival so intercept time that explosion suppression device starts, every cover obstruct explosion suppression device can both shock wave and flame intercept.If in the tunnel, constantly form repeatedly blast or blast continuously, this device also can continue shock wave and flame and realize the long-acting barrier effect.
At last,, baffler movable end in the tunnel is hung over again intercept on the explosion suppression device when gas explosion finishes, start corresponding sensor once more after, just can make whole device rearming.
Certainly, many covers of sensor and control thereof intercept explosion suppression device and can be installed in respectively in the different tunnels, thereby realize the comprehensive obstruct to gas explosion, improve barriering efficiency, reduce influence basin.Many covers intercept explosion suppression device and also can become laterally perhaps horizontal, the vertical mode that combines to be distributed in the top, tunnel, to adapt to the requirement of different roadway shapes under the coal mine, guarantee barriering quality.And the Starting mode that intercepts explosion suppression device also can be carried out while start-up control according to actual conditions except along the sequence starting of tunnel, thereby with mode the soonest, in all directions shock wave and flame are blocked.
Do further description below in conjunction with 1 pair of equipment according to the invention of accompanying drawing:
A kind of suppress gas repeatedly with the continuous equipment of blast, comprise temperature, flame and three kinds of sensors 1 of pressure and overlap mechanical type more intercepting explosion suppression device 2, sensor 1 with intercept explosion suppression device 2 and be separately fixed at 7 tops, tunnel.Wherein, sensor 1 is electrically connected with a plurality of obstruct explosion suppression devices 2 respectively, 27 order arrangements along the tunnel of a plurality of obstruct explosion suppression devices.The many covers that sensor 1 is positioned at its control intercept the two ends of explosion suppression devices 2 and maintain a certain distance.
Intercept explosion suppression device 2 and comprise box body 3, gauge tap 4 and baffler 8; Baffler 8 comprises metallic framework 6 and is serially connected in the polylith foamed ceramics sheet 5 on the metallic framework 6 with the wire order; 5 of foamed ceramics sheets can twist each other and be crooked; Metallic framework 6 one ends are fixed on the box body 3, and the other end is connected with gauge tap 4.Gauge tap 4 is positioned at box body 3, and gauge tap 4 is electrically connected with sensor 1 through lead.Sensor 1 is respectively temperature, flame and pressure sensor, and many covers intercept explosion suppression device and vertically are arranged in 7 tops, tunnel for 2 one-tenth.Certainly many covers intercept explosion suppression devices 2 also can be laterally or horizontal, vertical combination be arranged in 7 tops, tunnel.
In the routine work process, baffler 8 is connected on the box body 3, and sensor 1 is in monitoring state constantly, and the box body 3 that is positioned at 7 tops, tunnel can not influence people's operate as normal.When gas explosion took place, explosion wave and flame ripple were along with the rapid rising of temperature or pressure, and the sensor that receives at first sends induced signal to gauge tap 4; Gauge tap 4 is opened, and baffler 8 movable ends are deviate from from gauge tap 4, and baffler 8 is suspended on tunnel 7 central authorities; Because the hysteresis quality of shock wave and flame; The skyborne baffler 8 of many group suspensions shock wave effectively stops with flame, reduces the impact force of shock wave, avoids the secondary coal dust to burn.When repeatedly blast and explosion time continuously take place,, intercept longer and inhibitory action thereby blast repeatedly played because foamed ceramics can repeatedly use.After blast finishes, the movable end of baffler 8 is connected on the gauge tap 4 once more, restart sensor 1 after, whole device just can be in monitoring state again.
Claims (10)
- One kind suppress gas repeatedly with the continuous method of blast, it is characterized in that, compriseMany covers mechanical type in coal mine roadway top sensor installation and control thereof intercepts explosion suppression device, intercepts to be connected with in the explosion suppression device to control the mechanical type baffler of routing up;Utilize sensor to survey gas explosion and the startup of control obstruct explosion suppression device;Baffler one end falls in the obstruct explosion suppression device after the startup, and the other end is connected and intercepts on the explosion suppression device, stops that the impact that the blast back produces involves the play of flame in the tunnel;After the explosion subsides, again the baffler movable end is connected and intercepts on the explosion suppression device the corresponding control sensor of opening again.
- 2. according to claim 1 a kind of suppress gas repeatedly with the continuous method of blast, it is characterized in that the diverse location in the tunnel is connected with multiple sensors, multiple sensors intercepts explosion suppression devices and starts according to declaring the many covers of knowing of detonator signal control at first; Said many covers intercept explosion suppression device and laterally or vertically are arranged in the tunnel.
- 3. according to claim 2 a kind of suppress gas repeatedly with the continuous method of blast, it is characterized in that the Starting mode that said many covers intercept explosion suppression devices comprise along the tunnel sequence starting and/or start simultaneously.
- 4. according to claim 1,2 or 3 described a kind of repeatedly and continuously methods of blast of gas that suppress, it is characterized in that said sensor is surveyed the variation of temperature, flame and/or pressure in the gas explosion process respectively.
- 5. according to claim 1 a kind of suppress gas repeatedly with the continuous method of blast, it is characterized in that said baffler is the multi-sheets piece connector that the back forms that is flexible coupling each other, sheet material adopts the foamed ceramics sheet.
- One kind suppress gas repeatedly with the continuous equipment of blast; It is characterized in that; Comprise that sensor intercepts explosion suppression device with the many covers mechanical type that is connected with sensor; Said sensor and many covers intercept explosion suppression devices and are separately fixed at the top, tunnel, and sensor is near the tunnel end that is prone to generation gas explosion or in the both sides that intercept explosion suppression device.
- 7. according to claim 6 a kind of suppress gas repeatedly with the continuous equipment of blast; It is characterized in that; The quantity of said sensor is at least three; Three sensors are respectively temperature pick up, flame sensor and pressure sensor, and three sensors intercept the corresponding connection of explosion suppression device with many covers respectively.
- Based on claim 6 described a kind of suppress gas repeatedly with the continuous equipment of blast, it is characterized in that said many covers intercept explosion suppression devices and become laterally or vertically to be arranged in the top, tunnel.
- According to claim 6 or 8 described a kind of suppress gas repeatedly with the continuous equipment of blast, it is characterized in that said obstruct explosion suppression device comprises box body, gauge tap and baffler, said gauge tap and baffler are positioned at box body; Baffler one end is fixed on the box body, and the other end is connected on the gauge tap; Said gauge tap is connected with sensor.
- 10. according to claim 9 a kind of suppress gas repeatedly with the continuous equipment of blast; It is characterized in that; Said baffler comprises metallic framework and is serially connected in the polylith foamed ceramics sheet on the metallic framework with the wire order; Metallic framework one end is fixed on the box body, and the other end is connected with gauge tap.
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| CN2009100923788A CN101713297B (en) | 2009-09-04 | 2009-09-04 | Method and equipment for suppressing gas from multiple continuous explosions |
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| CN2009100923788A CN101713297B (en) | 2009-09-04 | 2009-09-04 | Method and equipment for suppressing gas from multiple continuous explosions |
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| CN101713297B true CN101713297B (en) | 2012-05-30 |
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| CN106126946A (en) * | 2016-06-28 | 2016-11-16 | 安徽理工大学 | A kind of mine disaster intercepts the determination method of emergency escape device installation site |
| CN106730486B (en) * | 2016-12-26 | 2022-06-24 | 清华大学 | Active explosion suppression system |
| CN107356723B (en) * | 2017-06-26 | 2019-06-07 | 重庆大学 | Mine laneway systems modelling component |
| CN108019235B (en) * | 2017-12-07 | 2019-06-18 | 中国矿业大学 | A kind of automatic explosion arrestment method of combined type for gas drainage pipeline |
| CN107883983B (en) * | 2017-12-13 | 2019-08-20 | 中国矿业大学(北京) | Protector for sensor and sensor |
| CN108915757B (en) * | 2018-07-24 | 2023-05-16 | 内蒙古科技大学 | Active defense system and method for coal and gas explosion |
| CN110219690B (en) * | 2019-05-16 | 2020-06-26 | 中国矿业大学 | Mining vertical falling type active explosion-proof and fire-suppression device and using method thereof |
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