Fire resistance: the detonating tube does not detonate under the action of flame.
It is the detonating element of detonator initiation system.
[share]: from the road, bridge and tunnel dry goods collection: the main blasting equipment and temporary storage requirements for tunnel blasting construction.
Detonator detonator detonator is a detonator specially used with detonator.
Temporary storage and its application temporary storage refers to the situation that the blasting equipment cannot be received from the warehouse at any time because the blasting operation surface is far away from the blasting equipment warehouse, but the blasting equipment is temporarily stored in a safe place near the blasting operation surface to facilitate receiving, distribution and recovery.
Impact resistance: in the vertical drop hammer test, the hammer mass is 10kg, the drop height is 150cm, and the detonating tube will not detonate when it is laterally impacted.
Principle (1) time: from the time before charging of blasting operation to the time when it is confirmed that there is no more charging or when it is evacuated and returned to the warehouse after blasting operation.
Initiation capacity: the initiation capacity increases with the increase of charge quantity and detonation speed.
Detonating cord detonating cord is a cord like explosive transmission equipment for transmitting detonation waves, which is used to transmit or detonate explosives, or directly work by using its explosive force and explosive products.
The most common ones in the market are: No.
Note: the detonating tube shall not be knotted, folded in half or damaged in the detonation direction.
Generally, the ordinary detonating cord with a charge of more than 11g / M and a length of 1.5m shall be able to fully detonate 200g pressed TNT charge.
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1 and No.
Main performance indicators: explosion speed: not less than 1850m / s at 20 ± 10 ℃.
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High and low temperature performance: reliable initiation and propagation at + 50 ~ – 40 ℃.
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After the open flame ignites one end of the detonating tube, it can burn smoothly.
Detonation transmission performance: the ability of the supporting cable to detonate completely after the main cable of the blasting network composed of certain specifications is detonated.
(3) Half second delay detonator, also known as half second detonator detonator.
In addition, the detonating cord has certain water resistance; The original initiation and detonation transmission capacity can still be maintained under the environmental conditions of high temperature (50 ℃) and low temperature (- 40 ℃) for a certain time; It can still detonation completely under the action of bending, knotting and certain tension.
It is sensitive, has high work ability, strong water resistance, safe and non-toxic.
It is suitable for blasting projects without explosion risk of biogas and / or mineral dust.
Generally, the effect of thermal impulse on the nonel tube can not realize the stable propagation of detonation wave in the tube.
Static resistance: the detonating tube does not detonate under the condition of voltage 30KV and capacitance 330pF for 1min.
It has electrostatic resistance.
There is no explosion sound of explosives, but many bright spots can be seen in the flame.
Only the nonel tube is damaged and does not detonate.
Under the condition of – 40 ~ + 50 ℃, one No.
Discoloration performance: to identify whether the detonating tube has been detonated.
Tensile strength: not less than 70N at 25 ℃, not less than 50N at + 5 ℃ and not less than 100N at – 40 ℃.
When the detonating tube is stretched thin, the important layer in the tube will be disconnected.
2 rock emulsion explosive, static breaker detonator detonator (second delay, millisecond delay), detonator detonator, detonating cord reflection four-way detonator, No.
Main types: (1) instantaneous detonator detonator; (2) Millisecond (MS) delay detonator detonator, also known as millisecond detonator detonator.
It is the main component of the detonator initiation system, which is used to transmit stable detonation wave.
3.
2 rock emulsion explosive, which is a new type of rock water-resistant industrial explosive, It does not contain any monomer explosive.
Detonating cords are usually detonated by detonators, and their detonation transmission is not affected by radio frequency, static electricity and stray current.
The detonating equipment of basic detonator is detonated by the detonation wave propagating in the detonator.
jc506-2008), the “static crushing agent” is defined as: any inorganic compound with calcium oxide as the main body calcined at high temperature and mixed with an appropriate amount of admixture to jointly grind the powdered material for non explosive crushing with high expansion performance, It is called silent crushing agent (also known as static crushing agent).
8 detonator can reliably excite 20 detonators.
Main performance indicators: explosion speed: not less than 6000m / s.
Although the detonating tube has a certain tensile strength, the stress on the detonating tube should be avoided when laying the detonating tube network.
The low-speed impact of vehicle rolling generally will not detonate the detonating tube, while the high-speed impact may detonate the detonating tube.
2 rock emulsion explosive, No.
Detonation propagation performance: the energy released from the side or tail of the detonating tube cannot detonate the bulk Tai’an explosive, but if the released energy is properly concentrated, it may directly detonate the low-density and highly sensitive explosive.
Requirements for temporary storage of blasting equipment 1.
(2) Quantity: the type and quantity of blasting materials temporarily stored shall be comprehensively determined according to the basic consumption of the current shift, combined with environmental safety conditions and transportation safety conditions..
4.
On the premise of ensuring safety, determine the type, quantity, location and time of temporary storage of blasting equipment according to the needs of blasting operation.
Main performance parameters: explosion speed is generally 3200m / S; Work capacity 260ml (expansion value of lead column hole in lead column test); Rigidity 12mm; Blast distance 3cm; Impact sensitivity ≤ 8%; Friction sensitivity ≤ 8%; Thermal sensitivity: no combustion, no explosion; Roll density 0.95 ~ 1.30g/cm ³ The valid storage period is 6 months.
Sometimes the stepping machine gun is designed to detonate.
Initiation performance: only certain strength and appropriate form of external excitation impulse can stimulate the detonating tube to produce detonation.
Detonating tube detonating tube is the abbreviation of plastic detonating tube, also known as Nonel.
(4) Second delay detonator, also known as second detonator detonator.
Except for the necessity of blasting operation, blasting equipment shall not be stored outside the special warehouse for blasting equipment.
Static crushing agent in the building materials industry standard of the people’s Republic of China silent crushing agent (Standard No.
The greater the distance of the explosive layer is, the more unfavorable it is to the detonation transmission of the detonating tube.
The surface of the detonating cord is red or yellow.
It is composed of basic detonator and detonator.
