Detonation shock wave bubble rapid dust fall method

A blister and fast technology, applied in the field of blasting, can solve the problems of insufficient uniformity and limited dust reduction effect, and achieve the effect of improving uniformity

Active Publication Date: 2019-02-05
中电建路桥集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] On-site practice has proved that the water-sealed blasting technology has played a certain role in reducing dust and absorbing harm...

Method used

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  • Detonation shock wave bubble rapid dust fall method

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Embodiment Construction

[0018] The present invention will be further described below with reference to the drawings and embodiments.

[0019] As shown in the figure, the blasting shock wave bubble rapid dust reduction method of this embodiment includes the following steps:

[0020] 1) Put water into a water bag, the ratio of the volume of water to the volume of the water bag: 0.6~0.7;

[0021] 2) Put the foaming agent into a water bag, and each liter of water contains 0.2-0.5g foaming agent; the foaming agent is used to generate bubbles and make the generated bubbles relatively stable. There are many types of foaming agents in the prior art. The foaming agent used in this embodiment is Dowfroth 250, which can generate a large number of tiny bubbles.

[0022] 3) Fill the water bag with carbon dioxide gas or carbonic acid at 25°C and seal the water bag. After sealing, the air pressure in the water bag is 0.5~0.6MP;

[0023] 4) Install the water bag 1 on the end of the explosive column 3 in the blasthole, and se...

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Abstract

The invention discloses a detonation shock wave bubble rapid dust fall method. The detonation shock wave bubble rapid dust fall method comprises the following steps that firstly, water is arranged ina water bag, and the ratio of the water volume to the water bag volume is 0.6-0.7; secondly, a foaming agent is arranged in the water bag, and 0.2-0.5 g of the foaming agent is contained in each literof water; thirdly, the water bag is inflated with carbon dioxide gas or carbonic acid at the temperature of 25 DEG C, the water bag is sealed, and the air pressure in the water bag after sealing is 0.5-0.6 MP; fourthly, the water bag is arranged in the two ends of an explosive column in a shot hole, and the shot hole is blocked through plaster; and fifthly, the explosive is detonated through a detonator, the carbonic acid in the water bag is rapidly decomposed to generate a large amount of carbon dioxide gas through heat and vibration generated by explosion, a large number of bubbles are generated in the water bag through the carbon dioxide gas, the water bag is exploded through the high-temperature and high-pressure gas generated through explosion, and bubbles and water mist diffused allaround during water bag explosion are utilized for dust fall. A large number of fine bubbles and a large amount of water mist evenly diffused all around during explosion are utilized for dust removal, and the dust fall effect is good.

Description

Technical field [0001] The present invention relates to the field of blasting technology, in particular to a blasting device capable of quickly reducing dust. Background technique [0002] In engineering practice, a large amount of dust and harmful gases will be generated during tunnel blasting, which will seriously endanger the health of tunnel constructors and cause pollution to the environment. After tunnel blasting, a pressure blower is generally used to inject fresh air into the tunnel to achieve the purpose of exhausting dust and harmful gases in the tunnel. However, this method is not only time-consuming and energy-consuming, but the effect is not very obvious, especially for long In large tunnels, construction workers are still exposed to dust and harmful gases. [0003] At present, in domestic tunnel blasting, water-sealed blasting technology is generally adopted to control dust concentration and harmful gas emissions from the source. The definition of water seal blastin...

Claims

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Application Information

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IPC IPC(8): F42D1/00F42D1/08F42D3/04
CPCF42D1/00F42D1/08F42D3/04
Inventor 杨松艾祖斌侯圣均江传彬张国良李玉
Owner 中电建路桥集团有限公司
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