1, gas tunnel blasting operation must strictly implement the system of "one shot, three inspections" and "three-person interlocking blasting". 2. "One shot and three inspections" means that before charging, before shooting and after shooting, the gas concentration in the airflow within 20m near the shooting site should be checked. When the gas concentration exceeds 65438 0%, blasting operation is prohibited. 3. We must strictly implement the "three-person interlocking shooting" system. The execution procedure is as follows: before blasting, the team leader shall count the personnel and send people to stand guard to check whether the top arch and support of each blasting shelter are in good condition. After the tile inspector checks that the gas is qualified, he will notify the blaster, who will issue a blasting alarm (three long whistles) for blasting. 4. The Ministry of Security is responsible for providing portable methane detection alarm for full-time tunnel blasters. 5. Full-time blaster must work with tile inspector and team leader when carrying portable methane detection alarm into the well. After arriving at the job site, the tile inspector will fill in the specific contents according to the test data of three periods, which will be signed by the team leader and the blaster, and will be sorted out and reported to the Ministry of Security after work. 6. The security department must carefully review the contents of the record form, find and correct various problems in time, and sign and save them. The construction team and full-time blasters who refuse to mend their ways or fill in the report as required shall be fined. 7. The safety officer is responsible for supervising the implementation process of the system of "one gun, three inspections" and "three people interlocking shooting", and the gas inspector is responsible for filling in the data of "one gun, three inspections". 8, before shooting, the construction group must disconnect all the power supply in the return air, after confirmed by the gas inspector, before shooting orders. 9. After shooting, the gas inspector must carefully check the gas in the working face and the return air flow, and confirm that when the gas concentration in the shooting location and the return air flow is lower than 65438 0%, the power transmission can be resumed.
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