Report leader: My name is, and I am a blaster in the team of Zijin Coal Industry Company. I have been engaged in this type of work for many years, trained by the staff school of the group company, and certified to work. This certificate is valid from the date of the month to the date of the month.
Safety confirmation before entering the well
1, miner's lamp is in good condition, with sufficient power and the lamp line is not broken. Confirm completion!
2, safety helmet in good condition without cracks, confirmed! .
3. Fasten the neckline (cuff), button up, fasten the towel, put on gloves and wear the work clothes neatly. Confirm completion!
4. The appearance of the self-rescuer is intact and undamaged, and it is within the validity period. Confirmation is complete!
5. The appearance of the positioner is intact, the induction is normal, and the power is sufficient. Confirmation is complete!
6. Portable tile detector has sufficient power and accurate parameters, and the confirmation is complete!
7. The mine rubber shoes are undamaged, and the confirmation is complete!
job description
1) Under the leadership of the team leader, be responsible for the blasting work at each job site.
2) Blasting shall be carried out in strict accordance with the blasting instructions in the operation procedures.
3) Before blasting, the supporting conditions of the blasting site must be checked; After blasting, problems such as residual gun and misfire must be dealt with in time, and old eyes are not allowed; It is forbidden to drill and charge in parallel.
4) Actively cooperate with the team leader and tile inspector to ensure "one shot, three inspections" and "three people interlocking" to ensure the smooth completion of blasting work.
Hazard identification description
1) Explosions caused by illegal storage of detonators and explosives can be prevented by underground transportation and sub-packaging, keeping a distance of more than 30 meters.
2) The handling of initiating explosive device will be damaged by impact and explosion, so careful handling can prevent such damage.
3) The depth of the hole and the length of the stemming are not in conformity with the regulations, and the depth of the hole is less than 0.6m, so charging is unnecessary, and stemming must be filled to prevent it.
4) After blasting, dangerous rocks are hung with gangue to injure people. After a specified time, they will enter the working face to "knock on the side and ask for the roof" to find out the dangerous rocks and live stones, so as to avoid leaving a safe distance for prevention.
5) Damage caused by insufficient escape distance or unreasonable escape position during blasting can be avoided by avoiding according to the specified distance.
6) When shooting, there is no warning to cause injury, which can be avoided by setting a warning at the designated position.
Safety confirmation before working face operation:
Confirmation of blasting materials, facilities and equipment before operation:
1, get the detonator and blasting bus, and confirm that the detonator shell is intact and powerful!
2. The blasting bus bar has no fracture and no exposed joint, and its length is greater than 100 m, which conforms to the regulations. Confirm completion!
3. The length of the wooden gun stick is 2.4 meters, and the blasting equipment such as spoon, gun mud, and mud is well prepared and confirmed!
4, ram hanging neatly, within 4 meters from the working face, within 6 meters in accordance with the regulations, and the air volume is normal, confirmed!
5, gas sensor from the top is not more than 300mm, from help is not less than 200mm, no water spray on the roof without exception, parameters display is normal, confirm!
6. The detonator box and powder box have been locked, and the two boxes are stored in a place where the roof is intact, the support is complete, and the conductor is avoided and well ventilated, and the storage distance is more than 30 meters. Confirm!
7. Before temporary support, probe beam and probe ring shall be complete and intact, and confirmed to be complete!
Environmental safety confirmation before operation:
1, knock for help and ask for the roof. The living gangue of dangerous rock on the roof has been chiseled, and the roof control distance is 0.2m, which meets the requirements of operation procedures and can be drilled and blasted. Confirm!
2. Within 20 meters after the working face, there is no bag hanging on the roof, no gap, and no dangerous rocks and live gangue on both sides. Support intact, confirm!
3, working face within 20 meters of shooting spray water pressure is normal, water is sufficient, confirmed!
4. Within 20 meters of the working face, there is no mine car, no accumulated gangue and sundries, and the remaining section is larger than the roadway design section 1/3. Confirm completion!
5. 80 meters of water was drilled in the working face, 30 meters have been excavated, and the remaining 30 meters are within the scope of operation and excavation. Blasting excavation can be carried out, confirmed!
Drilling, blowing and checking holes.
1, according to the borehole layout and roadway section, the borehole is arranged on the head-on free surface, and the borehole has been marked for confirmation!
2. The tile inspector checked that the gas concentration within 20 meters of the working face was 0.3%, which was lower than 0.8%. You can drill a hole to confirm it!
3. According to the hole arrangement, cut holes first, then drill auxiliary holes, and finally arrange peripheral holes. The eyes have been drilled to confirm!
4. Start hole cleaning and hole inspection, take out the dust in the hole with a spoon, and check the hole depth with a gun stick. Upon inspection, the cut hole depth is 2m, the auxiliary eye depth is 1.8m, the peripheral eye depth is 1.8m, and the bottom eye depth is1.8m. There is no sundries in the eye, which is in line with the operation regulations. Confirm completion!
Safety confirmation in working face;
Safety confirmation of drug introduction during assembly;
1, the roof is intact, the support is complete, and it is carried out near the explosion site of electrical equipment and conductors. By means of initiation, a bamboo stick slightly thicker than the tip of the electric detonator is used to make a hole in the special-shaped hole end of the cartridge, and all the electric detonators are inserted into the eye. The crural line is twisted and short-circuited on the cartridge, and the number of primary explosives should be consistent with the number of blastholes, and it is not allowed to be installed in more than one cartridge. The number of primary explosives is consistent with the number of blastholes. After the primary explosive is assembled, count the quantity, put it neatly in the container, lock it and transport it to the working face. Confirm!
2. The gas concentration within 20 meters of the working face is 0.4%, lower than 0.8%. It can be recharged, and it is certain!
3. Charge according to the blasting instructions. When charging, pull the detonator crural line with one hand and gently push the primer into the eye with the other hand, so that the cartridge is closely connected with the cartridge and between the cartridge and the fundus. In accordance with the "regulations", use a gun stick to gently push the stemming and stemming into the eye in turn, and gradually tamp them. Charge and seal in turn according to the sequence of holes, and the detonator crural line will be short-circuited and suspended. Finally, the remaining gunpowder and detonators will be packed and locked in boxes.
According to the three-person "chain" system, blasting confirmation is carried out.
(The blaster handed the warning sign to the team leader, and the team leader began to check the roof support within 20 meters of the working face after receiving the warning sign, evacuated the gas probe, gunpowder box and detonator box to the cordon, and evacuated all personnel from the refuge cavern outside the cordon. After the inventory is completed, all personnel have been evacuated from the blasting operation site, and designated personnel have been set on alert. )
(The team leader will hand over the command card to the tile inspector after inspection, and the tile inspector will start gas inspection after receiving the command card. )
1. Upon inspection, the gas concentration is 0.3%, which is lower than 0.8% within 20 meters of the working face. It has been sprayed with water to reduce dust, and an explosion-proof air duct has been added, which has good ventilation and no potential safety hazard. Confirm completion!
(The tile inspector gives the blasting card to the blaster, and the blaster receives the blasting card and starts laying the blasting bus. )
2. When laying the blasting bus, the bus should be hung on both sides of the roadway. For example, cables and feng shui pipes should be hung on the same side, and they should be hung at a distance of more than 0.3 meters, avoiding electrical equipment and electrical conductors. The blasting bus has been laid 1 100 meters (more than 100 meters conforms to the provisions of the Regulations), and the bus has no disconnection or disconnection.
3. The network is conducting normally, and the blasting bus and the pin wire are connected. The line has been connected, and the confirmation is complete!
4. After passing the inspection, the blasting can be started, and the blasting signal is sent out. The blaster shouted: shoot! ! !
The blaster firmly contacts the blasting bus on the detonator terminal, inserts the key into the detonator and turns it to the charging position. (motioned): shoot! ! ! Shoot! ! ! After 5 seconds, the blaster turns the key to the initiation position for initiation; After blasting, quickly pull out the key, get off and short circuit. The working face has been safely detonated, confirmed!
Safety confirmation after working face operation:
(15 minutes later)
Team leader, blaster, tile inspector and safety officer shall check the completeness of roof support, various safety facilities and blasthole initiation from outside to inside at the same time. After inspection, the roof support of the working face is in good condition, the gas concentration is well ventilated, the coal dust has landed, the dangerous rocks and live gangue in the free face have been found, all the blast holes have been detonated, and there are no residual guns and squibs. Confirm completion!
Return the three-person chain card to its original owner, remove the alert, reset the gas sensor, recover the blasting bus, detonator and blasting bus and put it back in the designated storage place, and resume normal work. Confirm!
5. The blaster shall count the remaining electric detonators and explosives, fill in the repaying list, verify that the received quantity is consistent with the used and remaining quantity, and sign it by the monitor on duty. The remaining materials on duty shall be returned to the powder magazine and confirmed!
6. The blasting operation of this class has been completed and everything is normal. You can proceed to the next step and confirm the completion.