Aqueous medium energy transition blasting method and charging cavity

Abstract

The invention discloses an aqueous medium energy transition blasting method and charging cavity. The aqueous medium energy transition blasting method comprises the steps that firstly, an aqueous medium and explosives with the mass ratio larger than or equal to an optimal value are mounted in the explosive charging cavity of a blasting medium, and the explosives and the aqueous medium are isolated from each other; and then the explosives mounted in the explosive charging cavity are detonated. The aqueous medium and the explosives with the mass ratio larger than or equal to the optimal value M are mounted in the charging cavity, the explosives and the aqueous medium are isolated from each other, and the optimal value M is the ratio of explosion heat of the explosives adopted in the blasting process to heat energy released when water is synthesized by hydrogen and oxygen. The aqueous medium energy transition blasting method and charging cavity have the beneficial effects that the effective utilization rate of energy of the explosives can be increased, the blasting effect of the explosives on the blasting medium can be improved, blasting damage can be reduced, and blasting smoke is less.

Description

technical field [0001] The invention relates to blasting construction technology, in particular to a water medium energy-transforming blasting method and a charge chamber thereof. Background technique [0002] There is a general prejudice in traditional blasting technology that there should be no water in the blast hole. In 2007, Professor He Guangyi of the Railway Architecture Design Institute and others applied for the national patent "Engineering Water Pressure Blasting Blast Hole and Its Blasting Method" (ZL200710051361.9) for energy-saving and environmental protection engineering blasting technology. There is water in the water bag, and the shock wave propagating in the water is incompressible to the water, and the explosion energy is transmitted to the surrounding rock of the blast hole through the water without loss. ' effect, which is more conducive to rock fragmentation". But there is following shortcoming in this technical scheme: (1) this technical scheme thinks...

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Problems solved by technology

But there is following shortcoming in this technical scheme: (1) this technical scheme thinks that its rock-breaking mechanism is to rely on the incompressibility of water to extrude rock, is to utilize the shock wave propagating in water to the incompressible characteristic of water in essence, and water is in essence It is used as a carrier for energy transmission, so the water bag is required to be in close contact with the blast hole, and the thickness of the water bag is ≮0.8mm, etc.

However, since the invention of explosives, people have made unremitting efforts to improve the effective utilization of explosive energy and reduce the harmful effects of explosive explosions, but the effect is still not very satisfactory so far, and the effective utilization rate of explosive explosion energy still stays at 20% to 30%. A not high level, the technical solution still has the problem of low utilization rate of explosive explosion energy

(2) This technical solution has been applied for nearly ten years, but its application is still limited to the promotion stage of tunnel excavation inside the "China Railway Group". There are no reports on the Internet that it is widely used and used in other blasting industries. The main reason is that it is still inevitable that the water bag will be broken and invalid during construction, and the construction process is troublesome.

(3) The technical solution requires the water bag to be in close contact with the blast hole. Therefore, in the process of putting the water bag into the blast hole, although the wall of the water bag is very thick, the two ends are still prone to rupture due to the impact of falling, resulting in water There is no way to find out if the bag is damaged or the water bag is damaged

When the micro-current passes through the high heat-conducting rod, a high-temperature breakdown of the safety film is generated, and the liquid carbon dioxide is vaporized in an instant, and the rapid expansion generates a high-pressure shock wave, causing the pressure relief valve to open automatically. Small, but larger blasting dust

Although the blasting hazard of this blasting technology is small, the blasting effect is not very ideal, and the general crushing particle size is 1.0m 3 left and right, only suitable for big stone mining, the scope of application is relatively limited

And the cost of its supporting equipment is high, generally 500,000 to 600,000 yuan, which increases the additional cost of blasting operations

Although carbon dioxide is easy to obtain (industrial production can be obtained by high-temperature calcined limestone), the carbon dioxide emitted by the carbon dioxide blasting method will pollute the air and cause a greenhouse effect on the atmosphere, which runs counter to environmental protection and low carbon, so it is not suitable for general engineering blasting operations

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