Safety measures in coal mine gas emission
Date:2013-11-21 Hits:
For the sake of safety production in coal mine, gas drainage is the key in production safety, what safety measures in coal mine gas emissions?
1, gas emissions, must be made by the relevant leaders responsible for implementing, responsibilities to the people, who participated in the review, implement, personnel, must sign the record. All power switches must be suspended outage warning signs, and stop transmission electrician responsible for.
All the staff of 2, in the work of discharge, the unified command must obey commanding officers, commanders on the scene late gang or end before the command issued emissions, may not be discharged.
3, only when the electric removed, alert and so the work is ready, the scene shall be issued emission command, when the insecurity of discharge at the end of the work strict implementation of emissions or emissions in the process, on-site command and supervision personnel must be corrected or stopping emissions immediately.
4, the gas emission staff into the well number, time, the rescue team emissions responsible person must report to the scheduling and dispatching, chief engineer of the mine, mine.
5, the gas emission, must be near the inspection bureau fan and switch place within 10 meters of air in the gas concentration, the concentration of not more than 0.5%, can be manually operated fan to heading into the finite volume of gas emission, gradually accumulated; at the same time, gas and carbon dioxide concentration must also be discharged from the single head tunnel the flow and pressure air mixture are not more than 1.5%.6, the gas emission, should have the Fireboss return airflow and pressure mixed in heading face, always check the gas, when the gas concentration reaches 1.5%, should be instructions regulate air quantity, reduce to the heading face into the air, to ensure that the exhaust gas in heading face in the pressure of air mixed gas and carbon dioxide concentration shall not exceed the prescribed. The gas emission, no fan, exhaust gas recirculating air.7, air return system (including the heading face in mining working face gas emission effect by air chamber, roadway and the discharge of gas flow cut-off safety export etc.) must cut off the power supply, the withdrawal of all staff; also should send a guard, prohibited all personnel access. 8, the gas emission, must by the ventilation Department (or teams) is responsible for the implementation of on-site supervision, safety supervision department, mine rescue team in field duty. (discharge gas) emissions after inspection confirmed, the heading face gas concentration in air in not more than 1%, the concentration of oxygen and carbon dioxide is not less than 20% and not more than 1.5%, and the stability of gas concentration did not change after 30 minutes, the normal ventilation can restore partial ventilator.
9, in the discharge process of heading elsewhere because of the influence of cutting surface, in the complex, fan air supply before the designated person immediately check stop gas wind zone, the gas is not overrun, immediately for the restoration of the wind, or should be timely reporting, emissions.
After the end of 10, emissions, on-site command personnel in a timely manner to the mine engineer and teacher report emissions, authorized personnel may withdraw from the scene, emissions.
11, the gas emission after the end of the work, the emission staff rose after the well, to fill in emissions through technical director is responsible for reviewing, ventilation.
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