How to prevent gas emission in Hunan coal mine? Five people died of suffocation and one was injured. It is understood that at about 17:50 on May 28, a gas dumping accident occurred in Xinglong coal mine, leaving six people trapped. After all-out search and rescue, six trapped people were sent to the hospital for treatment after rising to the well. Five people were killed and one was injured and still under treatment.
At present, the local government and relevant departments are organizing medical forces to fully treat the wounded, and actively do a good job in the aftermath of the accident, family appeasement and site cleaning. According to the on-site investigation of relevant departments, it is preliminarily determined that the cause of the accident is the gas pouring out of the working face, resulting in suffocation and casualties of on-site operators.
Netizen comments:
What's the gas spill? How to prevent it?
Coal and gas outburst is a kind of special gas emission phenomenon, that is, under the action of pressure, broken coal and gas are suddenly ejected from the coal body to the mining space. Coal and gas outburst is a powerful natural disaster in coal mine underground production. It seriously threatens the safety production of coal mine and is very destructive. There are signs before each outburst, but the types and time of signs are different. Being familiar with and mastering the signs is of great significance for evacuating personnel in time and reducing casualties.
After an outburst omen is found in the outburst dangerous area, the on-site personnel can take some disaster avoidance measures.
1、 When the mining face personnel find an omen, they shall quickly evacuate to the air inlet side and notify other personnel to evacuate at the same time. During evacuation, the isolated self rescuer shall be quickly opened and worn, and then continue to evacuate. When outburst omen is found in the heading face, it must also evacuate quickly. After withdrawing to the outside of the anti outburst reverse damper, close the anti outburst damper, and then continue to withdraw.
2、 If the self rescuer fails or cannot reach a safe place with the self rescuer, you should enter the pre built refuge chamber during the evacuation, or avoid the disaster in the temporary refuge chamber quickly built in the nearby place and wait for the rescue of the mine rescue team.
3、 In some mines, some omens of coal and gas outburst appear, but they do not outburst immediately, and outburst occurs only after a period of time. Therefore, in this case, the on-site personnel must not hesitate, withdraw immediately and wear the self rescue device.
After the occurrence of coal and gas outburst accidents, miners working in mines or working faces with coal and gas outburst hazards must carry isolated self rescuers with them. In case of a prominent accident, wear it immediately to protect yourself and evacuate the dangerous area quickly. During the evacuation, if the escape route is blocked by outburst coal gangue and cannot reach the refuge chamber for refuge, the miners in distress can find the roadway and chamber with pressure air duct or iron air duct for temporary refuge and contact the outside world. At this time, open the air supply valve or connector of the pressure air duct to form positive pressure ventilation, so as to dilute the high concentration gas for the people in distress to breathe.