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Underwater blast shaped charge and underwater distribution method

A technology of energy accumulation and blisters, which is applied in blasting, blasting cylinders, explosive charges, etc., to achieve the effects of cost reduction, convenient construction and low initial investment

Inactive Publication Date: 2007-02-28
郑炳旭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an underwater blasting energy-shaping bomb and an underwater deployment method to solve the problems of applying the land-based energy-gathering blasting technology to underwater reef blasting, reducing the cost of underwater blasting projects, and further improving economic benefits.

Method used

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  • Underwater blast shaped charge and underwater distribution method
  • Underwater blast shaped charge and underwater distribution method
  • Underwater blast shaped charge and underwater distribution method

Examples

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Effect test

example 1

[0060] This example is an experiment. The test blasting rock is an optional piece of granite under still water with a flat rock surface and a thickness of about 2m, and the water depth is 2.2m.

[0061] The production process of the shaped energy bomb: the shell is a seamless steel pipe with an outer diameter of 273mm and a wall thickness of 8mm. First, cut the steel pipe into 250mm short steel pipes, and polish the two cut sections into smooth edges and corners to avoid straight edges and corners; according to the selected steel pipe model and referring to engineering data, the diameter of the bottom periphery of the energy-gathering cover is determined to be 200mm, and the energy-gathering cover is made of 2mm steel plate Stamping into a hemispherical shape requires that the processed energy-gathering cover should be uniform in thickness, regular in shape, smooth and free of burrs around the bottom of the cover; the energy-gathering cover and the shell steel pipe are welded ...

example 2

[0065] The test blasting rock is the bedrock (fully weathered rock, strongly weathered rock and moderately weathered rock) of the Xiamen Port Dongdu Channel Expansion Project. The underwater rock surface is relatively flat, and the rock surface is 4.5m below the reference water level. m, the water velocity is less than 0.5m / s.

[0066] The shell of the shaped energy bomb is a steel pipe with an outer diameter of 245mm and a wall thickness of 6.5mm. The projectile height is 220m, and the energy-gathering cover is hemispherical, with a radius of 90mm and a thickness of 2mm. The polyvinyl chloride foam plastic is processed into a hemispherical shape with a radius of 90mm and bonded together with the energy gathering cover. A single shaped charge pack weighs 10kg.

[0067] The explosives used in shaped energy bombs are cast TNT explosives with a density of 1.56g / cm 3 , the detonation velocity exceeds 6500m / s. A detonator detonator is used to detonate the shaped charge, and a w...

example 3

[0070] A water intake tower has an outer diameter of 10m, an inner diameter of 8m, a height of 47.8m, and a weight of more than 3,000 tons. It is 260m away from the reservoir dam and 103m away from the sluice house. During construction, the foundation needs to be dug for 5-6m at a water depth of 33m, about 500m 3 . The surface layer has a gravel layer of about 2m, and the lower part is moderately weathered granite.

[0071] The shell of the shaped energy bomb is cylindrical with an outer diameter of 560mm, a height of 500m, and a wall thickness of 2mm, and is made of a 2mm thick steel plate. The energy-gathering cover is hemispherical, with a radius of 220mm. The connecting ring and the energy-gathering cover are integrally formed by punching steel plates with a thickness of 4mm. The polyvinyl chloride foam plastic is processed into a hemispherical shape with a radius of 220mm and bonded together with the energy gathering cover. The main explosive is cast TNT explosive with...

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Abstract

The invention relates to an underground blasting energy-collecting ball, which comprises: blasting starter, drug, frame, and drug frame, wherein the blasting start point is at the top of center of drug; the drug frame is at the bottom of drug as taper, semi-ball or ball-cut shape; the invention is characterized in that: the drug frame is filled with waterproof foam plastic, to form the combination between foam and drug frame; the bottom edge of drug frame is sealed connected to the bottom plate of package. The invention has wide application, especially the underground reef, with low cost and simple operation.

Description

technical field [0001] The invention relates to an energy-gathering blasting device and an underwater laying method suitable for different rock strengths and different rock layer thicknesses, especially for underwater reef blasting. Background technique [0002] At present, the underwater reef blasting project mainly adopts the underwater drilling and blasting method. This method needs to be equipped with a reef blasting ship and corresponding equipment. The drilled holes are usually 1.8m deep, and the underwater drilling and blasting operation environment is relatively complicated. , not only affected by factors such as water surface wind and waves, sea tide surges, river water level, water flow velocity, and mud and sand movement, but also because the blasting medium is in a water-saturated state and is subject to the dual effects of water layer pressure and water resistance, so the drilling positioning and opening accuracy The quality control of blast hole charge plugging...

Claims

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Application Information

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IPC IPC(8): F42D1/00F42B3/22F42D3/00F42D99/00
CPCF42D3/04F42B1/02
Inventor 郑炳旭刘殿书李战军傅建秋
Owner 郑炳旭
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