Blind gun processing method

a Spotted cannon or suspected blind cannon should be reported immediately and processed in a timely manner. If it cannot be dealt with in time, obvious signs should be set up nearby and corresponding safety measures should be taken;

b difficult to handle blind cannons, should be asked to blasting work leaders, sent by experienced blasters, large blasting blind cannon handling methods and work organization, should be approved by the unit chief engineer;

c When dealing with blind cannons, unrelated persons are not allowed to be present, warnings should be placed at the boundary of the danger zone, and other operations are prohibited in the danger zone;

d prohibiting the pulling out or pulling out the primer package;

When the electric power bursts into a blind cannon, the power supply must be cut off immediately, and the blasting network should be SHORT-circuited in time;

After the treatment of the blind cannon, the explosive pile should be carefully inspected, and the residual blasting equipment should be collected. Precautionary measures should be taken before the explosion-proof blasting equipment is found.

g Each time a blind cannon is processed, the registration card must be filled in by the processor.

2 Dealing with the blind blasting blind cannon, allowing some of the mud to be carefully removed by hand, and relocating the new primer bag on the original primer bag, and the mud is detonated.

3 The blind cannon for handling shallow blasting can adopt the following methods;

a can be re-initiated when it is checked that the detonation line of the blasthole is intact;

b hit the parallel eye charge blasting. Parallel eye distance blind gun orifices shall not be less than 0.3m. For the shallow eye pot method, the edge of the blind eye cannon can not be less than 0.5m. To determine the direction of the parallel blastholes, it is possible to remove tampons of not more than 20 cm in length from the blind gun orifices;

c Using wooden bamboo or other tools that do not produce Mars, gently fill most of the blastholes and use the concentrating drug pack to induce blasting;

d blowing blind cannons and explosives with a remotely operated feng shui nozzle outside the safe distance, but measures must be taken to recover the detonator;

The e-blind cannon should be handled on duty. If the shift cannot be processed or not processed, the blind cannon situation (number of blind cannons, direction of the blasthole, number of charges and emergency position of the primer, treatment method and treatment opinion) should be clearly handed over at the scene. The next shift will continue.

4 The following methods can be used to deal with deep hole blind cannons:

a blasting network is not damaged, and the minimum resistance line has no change, can be re-wired detonation; if the minimum resistance line changes, the safety distance should be checked, and the warning range should be increased, then the line is detonated;

b Do not use a parallel charge to detonate at a diameter of not less than 10 times the hole of the blind hole. The blasting parameters are determined by the blasting work leader;

c All explosives are non-water-resistant ammonium nitrate explosives, and if the hole wall is intact, part of the stuffing can be taken out, water is poured into the hole, and it is invalidated, and then further processed.

5 The following methods can be used to deal with blind blasting of chamber blasting:

a If you can find the wire, detonating cord or detonating tube of the detonating network, if it is normal, it can still detonate. You can re-measure the minimum resistance line, redraw the warning range, and detonate the line;

b Remove the tampon along the erected well or leveling, re-lay the network, detonate the line or remove the explosives and detonators.

6 The following methods can be used to deal with blind blasting underwater blind blasting:

a separately placed bare drug pack near the blind cannon to make it burst;

b Carefully lift the pack out of the water and destroy it by explosion.

7 The following methods can be used to deal with underwater gunhole cannons:

a. After the factor causing the blind cannon is cleared, it can be re-initiated;

b If the length of the plugging is less than the explosive distance of the explosive or the water is completely filled, the primer may be additionally charged and detonated;

c Put a bare pack blasting near the blind cannon.

8 A blind cannon occurs in the ice-breaking blast, and a new explosive charge can be launched at the blind gun pack.

9 The following methods can be used to deal with the blinds of seismic exploration and blasting:

a Carefully remove the pack from the blasthole and destroy it by explosion;

b It is impossible to remove the drug pack from the blasthole or the well, and a new primer can be loaded for the blasting.

10 processes the metal, and a metal structural thermoset blind blasting guns, must be cooled to below the temperature of the wall of the hole 40 ℃, before being allowed to re-charge blasting.

Receive Basket

Stacking Plastic Storage Basket Rack Without Cover

Receive

Fulike Houseware&Gifts Co.,Ltd. , https://www.cnfulike.com