On the corner of coal mine stope face angle to prevent the s
Date:2013-11-21 Hits:
With the mining depth increasing, gradually increased the quantity of gas emission from working face. Upper corner of mining face the wind curtain control airflow dilute gas, but in the actual operation process, because the withdrawal slip causes tail support, tail gun or passers-by, the slightest mistake can be caused by mining working face upper corner gas accumulation and overrun, a serious threat to the safety of the coal mine, the blasting operation. Upper corner of mining face to prevent the safety technical measures of gas accumulation, the specific contents are as follows:
1, upper corner of coal face wind curtain must be in accordance with the provisions of the suspension, to ensure that the corner ventilation. No person shall be taken in the process of use without reason, to cherish the wind curtain not sabotage or take him to use. Each team must designate a person responsible for stoping hanging wind curtain.
2, each mining return airway from working face upper corner of 50 meters to install a local fan. Requirements for use in the upper corner of the curtain down, each team must designate a person in authority fan switch, hand fan, fan must pad, air duct must be suspended. Fan suction side must install methane power probe, the fan suction air gas concentration was over 0.5%, must be able to stop the fan and cut off power supply. Fan break must be sensitive and reliable instrument of methane.
3, when the back tail support shall be removed when the curtain, it must obtain the consent of Fireboss detection, can start the fan to the upper corner air supply, gas accumulation in the upper corner of the dilute.
4, when the tail shooting need to remove wind curtain, it must obtain the consent of Fireboss detection, can start the local fan will top corner gas dilution in the permitted range before operation.
5, the gas inspector must according to the requirements of each class of not less than two times. The top corner gas concentration detection, such as abnormal cases timely reporting and properly handle.
Volume 6, regular measurement of working face, keep enough air.
7, the working class, value requirements mine captain, blasters, withdrawal and all the staff at the upper corner of the curtain, must strictly implement the safety technical measures, safety management, safety inspectors, gas inspector responsible for supervising and inspecting the work of underground mining class team top corner wind curtain hanging situation. Such as the discovery of duty air curtain hanging bad or retracement, after blasting is not timely hanging the curtain, causing gas accumulation or overload operation, to shift responsibility hanging wind curtain personnel security punishment.
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