2. During the construction of the roadway, it is necessary to do a good job of gas inspection in the roadway on both sides of the through-point. When the working surface is more than 1.0% in the gas flow in the tunnel and the return airflow, the work should be stopped immediately and the personnel should be evacuated. And inform the relevant departments to find out the reasons and handle them.
3. During the passage of the roadway, the local ventilator must have a person responsible for management. It is required to measure the supply fan and the actual air volume of the working face every day.
4. The working surface and the wind supply fan on the side to be penetrated must be “three specials and two locksâ€. At the same time, the construction unit will arrange a special person to be responsible for the inspection of the power supply equipment, and find the power supply problem and deal with it in time.
5. The fan of the wind supply bureau shall not stop at random. In case of power failure or local fan failure, the personnel shall be evacuated immediately. When restoring the fan ventilation, the fan must be turned on in accordance with the procedures specified in the Coal Mine Safety Regulations. After the fan has been running for a period of time, the staff can enter the work surface when the gas inspector checks that the gas concentration in the roadway is below 1.0%.
6. During the excavation process, the air duct must be in place, and the air outlet of the air duct should not exceed 5m from the working surface. It is strictly forbidden to operate without wind or breeze. It is necessary to operate according to the blasting chart, and strictly implement the "one shot three inspections" and "three people interlocking shots" system. Before the eyes are inspected, it is necessary to check the ventilation, gas, gang, top, and smashing of the working face. If it is found to be abnormal, it is forbidden to drill, perform the knocking and asking top system, check and handle the temporary support, permanent support, and confirm the safety before you can open the eye. Before each blast, the entrance of the two working faces must be guarded by a special person. Before firing, you must send a signal (three shouts) to set a warning. After confirming the unmanned (guard zone), you can shoot the gun. At the same time, the guard and the gunner must contact in advance and do not leave the post without getting the evacuation notice. Water cannon mud or clay cannon is applied to the blasthole. It is strictly forbidden to block with coal and rock. Water cannon mud or clay cannon is applied to the blasthole. It is strictly forbidden to block with coal and rock. Blasting is strictly prohibited in blastholes without seals, insufficient mud or false seals.
7. It is strictly forbidden to work on the top of the roof. The support for the excavation work face should be close to the work surface. The rest of the circulation footage and support should be temporarily supported. For areas with high pressure, you need to encrypt the support.
8. Do a good job in the comprehensive dust prevention work in the working face and the side roadway being penetrated. In particular, every shift of the work site should carry out serious watering and dust reduction work, effectively control the flying of coal dust and keep the coal body in the roadway moist.
9. During the implementation of the through process, when the fan of one side supply wind station stops due to failure, the roadway should be stopped immediately, and the through work can be continued after the fan is ventilated.
10. Before the roadway is drilled, when working at a distance of 20m, it is necessary to stop a work surface and prepare for adjusting the ventilation system. When it is through, it must be supervised by a special person at the scene. The working face that is stopped must be kept properly ventilated, and fences and warning signs should be set.
11. Strengthen the gas inspection of the working face. Each working class should arrange a full-time gas inspector to check the working point and the gas passing through the sideway according to the routine. The number of inspections per shift should not be less than three times.
12. Each class must have a leader to follow the class and coordinate the relevant work. It is necessary to abide by the principle of "long exploration and short excavation", first through a small section, and then expand the section.
13. When constructing the workers, they should take care of the ventilation facilities to ensure that the air volume at the working surface is not affected.
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