Coal mine gas and coal dust explosion prevention disaster de
Date:2013-11-22 Hits:
Cause serious loss of gas and coal dust explosion prevention for coal, gas and coal dust explosion is an integral part of the production of coal mine. How to mine gas and coal dust explosion prevention, elimination of gas and coal dust explosion prevention disaster safety technical measures are as follows.
A) mining workplace air entrance tunnel, should set up the safety door.
Bo coal seam, mining, tunnel like a spider web, mining area of roadway is long and deep, if the gas and coal dust explosion accident of a strong poison, soundless and stirless rapid diffusion of whole well, the workers quickly collapsed, to bring a rescuer. The gas path, no life, however the gas can't reach, blind tunnel (tunnel inside the oxygen) in the personnel can survive, with reaction time self rescuer belt, it is pointed out to us a disaster safety technical measures, that is in the workplace all front end into the wind the safety door. A carbon monoxide carbon dioxide pressure disaster disaster probe, security doors must be closed automatically, automatic closing driving fan automatically cut off power supply, the workplace, mining roadway stop immediately into the wind. A disaster alarm signal, require gas monitor, must have this function. The safety gate function requirements, handiness and safety not leak, can automatically close the two doors. Usually two doors open, lock with electronic switch, ensure the safety of transportation and production need ventilation. Carbon monoxide and carbon dioxide concentrations reach accident, open the door lock, a spring bow pull the safety door is automatically closed. Advanced distance accident monitoring probe distance safety door is determined by field test. Safety door also can let manufacturer production of complete sets of equipment control electronic door lock probe. Each and every family has a security door, each and every family all safe, all mining work face into the wind tunnel have a security door, simple and easy not expensive security. Large coal small coal mines can do.
Two) set up a safe refuge chambers
In all mining workplace, set safe refuge chambers, chambers are closed better, iron fortified. There is strength in certain anti explosion shock wave, inside a compressed air pipe for air, a self rescuer, telephone. The main access tunnel escape necessary place in personnel, each mining site, set the necessary amount and scale of the refuge chambers, where the waiting chambers, must be built safe cavern. Refuge chambers can be divided into high and low two level, lower no telephone the compressed air pipe. From the end of 75 meters to 200 meters a rest, Blasting Disaster com., 500 meters from the heading face is provided with a senior refuge chambers. Run out of coal mining and tunneling. The blasting excavation hair raw gas explosion, to take refuge in the cavern to escape the rest can seriously damage from the shock wave and high temperature gas, all refuge chambers, door and door frame must be solid doors and walls of iron, a certain anti shock capability, safety of caverns with high-temperature resistance, anti shock wave of anti poison effect. The wall can also be made of steel plate with operations in the face of mobile device to an evacuation hole. In the safety of caverns in the staff have the opportunity to self, bring self rescuer, is composed of a working face lower chamber to senior cavern, war by a station of escape and rescue. The escape route into a help line. Small coal mines, coal mines can easily achieve this point.
The safety door and refuge chambers little investment, facilities can be reused, roadway engineering is very little, can also reuse do electromechanical switch chamber. The key is defined and the concept behind the disaster prevention technology. All emphasize the work surface and the number of control into the well number is not science. The current coal mine safety regulations, weight control to avoid the light, can't guard the vast Di, a profound lesson. To strengthen the safety technical measures of disaster defence.
Three) explosion door
To prevent the mine total into the belt transport wind roadway. Coal bunker. Dust occurrence substation. Gas explosion and fire hazard in order to eliminate the gas well, the gas and coal dust explosion accidents are implicated in harm, must be in the wind tunnel (total mine and partition into proper position arrangement of the two wind bidirectional explosion-proof door, mutual isolation disaster. Explosion door must be shut down automatically, (the incident shock waves automatically shut down) a few class hierarchy model design in coal mine safety regulations, install the roadway section not to expand, there are dangerous mine gas and coal dust explosion must be strictly enforced, only two pieces of main and auxiliary shaft disc shaft must be strictly enforced. Spools. Mining roadway into the airway setting strong two-way automatic close the safety door. Do not perform or unqualified, never production. Now, the accident investigation, safety inspection, ignored the safety rules of this Clause (the part of the prescribed procedures). Wrong to think. What a blast safety facilities were in vain.
Four) the explosion-proof tank
Where there is danger of mine gas explosion, coal rock roadway mining operations, into the wind down the lane, shall be provided with anti explosion water tank, the current is not high enough to pick the top, new roadway to specified location in the explosion-proof tank operation rules, the height of tunnel length size. A burst water, enough water to reduce the isolation barrier, blast wave, no doubt and neglect. Must be strictly enforced
Five) gas monitor to advanced
To adapt to the underground wireless communications, disaster monitoring, gas monitoring, accident monitoring.
To improve the anti accident damage intensity monitoring cable trunk line, when the accident occurred after like the other locations to sound the alarm, the ground monitoring center can stick out a mile accident site, so that the shaft speed effectively escape and rescue.
The site of the explosion destroyed the irresistible, but the probe to be broken. The high temperature. Finally the signal function high-pressure damage issued, plus the surrounding monitoring data analysis to determine the occurrence of accidents. The host location of the disaster function. Carbon monoxide is a large area of death cause, strengthen the study on carbon monoxide monitoring probe is advanced and reliable use. Monitoring well into the trunk to the double loop, are respectively arranged in the return air shaft. Chain explosion direction is from coal dust into the wind tunnel until the ground bore. The return airway due to moisture not chain explosion.
Six) to realize the underground wireless communication and advanced safety helmet. Communication of information is the lifeblood of the safety production of the coal mine, and mine advanced behind a clear sign. Change the underground production difficult, rescue communication difficult, increase scientific research, production, use promotion. Scientific research departments to develop: communication. Simple self rescuer, safety helmet of lighting com. Downhole each worker could talk with others at any time, safety risk and simple mask, this thing if success will bring leap to the coal mine safety production. Important research projects should be included in the coal mine.
Seven) workers build disaster rescue system
With the above security disaster safety measures and safety tunnel advanced. The safety door. Modern communication, can quickly into underground escape, self-help, mutual rescue. In addition to the site of the explosion reached less casualties, other places are not casualties. Accident cases prove that, the site of the explosion casualties is not much, other sites of carbon monoxide poisoning death too much. A fire burned the village. Resolutely change the current backward disaster relief passive state be at a loss what to do. Workers can avoid disaster. Rapid self-help and mutual aid, is to eliminate the basis and barrier accident
Eight) the danger of mine gas explosion, coal dust is sprinkled well under the explosive, preventing coal dust and gas prevention to the same examination as well. The gas is destroyed, inducement, dust is the dominant. Heavy gas. Light dust is accident the main reason
Nine) provisions CE danger zone. In the well body into the wind tunnel, belt transport, located in the area in front of the substation, face, the explosion of fire, the whole well. This place designated as the chief executive the danger zone, management of the chief executive risk area than other areas. Strict penalties against accidents.
Ten) safety education: all the coal mine accident, the accident lesson must be detailed content into discs, on the whole industry for full bulletin warning. (or other effective education way to workers) bulletin warning. Now the coal miners and grassroots cadres know only to accidents. Amazing. But I do not know the amazing bloody lessons, after three people passed on to workers, lose one's beyond recognition. All the big accident, disaster relief after the end of the process, to the scene of the accident group held a considerable scale. The company leadership team to participate in the meeting, once the scene of the accident will be unforgettable throughout life, spiritual alarm. With delayed a few days the accident unit production, very valuable for cadres at all levels of various touched the soul of education.
A major accident is caused by many different factors, this paper focuses on the other reason is not, in fact, now many of the coal mine there are serious security measures and vulnerability behind in preventing gas and dust major disasters, heavy - avoid the light, which is to prevent the occurrence, prevention of light after an explosion, the whole well suffer, fully illustrated this problem. There are inappropriate, please. Using these technical cooperation, can make the explosion and the damage to a minimum, can not only eliminate the gas and coal dust explosion well crash accidents, but also can be the site of the explosion casualties to a minimum, because there is a chance of survival condition and the last safety escape barrier.
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