High polymer gravel protection device for eliminating near-field underwater blasting shock waves

A protective device and polymer technology, which is applied in the field of polymer gravel protective devices, can solve the problems of unsatisfactory attenuation effect and high energy consumption

Active Publication Date: 2021-07-06
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bubble curtain has the following disadvantages: (1) The attenuation effect of the bubble curtain on the low-frequency and high-frequency energy in the shock wave is not ideal; (2) In order to ensure the density and energy dissipation effect of the bubble curtain, multiple high-power units are required during the construction process. Air compressors work at the same time, high energy consumption

Method used

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  • High polymer gravel protection device for eliminating near-field underwater blasting shock waves
  • High polymer gravel protection device for eliminating near-field underwater blasting shock waves
  • High polymer gravel protection device for eliminating near-field underwater blasting shock waves

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Experimental program
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Effect test

Embodiment 1

[0023] like Figure 1-Figure 3 As shown, a polymer gravel protection device for eliminating the shock wave of underwater near-field blasting, including polymer 2, barbed wire 4 arranged in parallel, gravel 1 and steel plate 3, and the space between the barbed wire 4 is filled with gravel 1 to form a protective body, and then pour high polymer to form a protective mechanism 7, both sides of the protective mechanism 7 are pre-embedded with steel plates 3, such as Figure 8 As shown, the steel plate 3 adopts a thin steel plate with a thickness of 5-10 mm and a width of 5-10 cm. The two ends of the steel plate 3 protruding from the protective mechanism form lifting lugs, and a lifting hole 8 is opened on the lifting lugs. Before pouring, the steel plate Buried in the protection mechanism, bolts or ropes are used to assemble the invention with the help of hoisting holes, which is convenient for assembly and suspension arrangement. The steel plate is evenly distributed with circular...

Embodiment 2

[0034] like Figure 4 , Figure 5 As shown, the gravel of this embodiment is smooth in surface, approximately oval or round, with a particle size of about 3 cm and a density of about 2.5 g / cm 3 Pebble 6, the particle size of the crushed stone is basically the same, the crushed stone has a certain hardness, the surface is clean, and there is no debris attached.

[0035]The specific implementation process of this embodiment repeats the above-mentioned embodiment 1.

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Abstract

The invention relates to a high polymer gravel protection device for eliminating underwater near-field blasting shock waves. The device comprises a high polymer, wire meshes, gravel and steel plates, the gravel is filled between the wire meshes to form a protection body, then the high polymer is poured to form a protection mechanism, the steel plates are pre-buried on both sides of the protection mechanism, lifting lugs are formed at the two ends of the steel plate extending out of the protection mechanism, and lifting holes are formed in the lifting lugs. The sudden change of wave impedance between a high polymer gravel protection mechanism and a surrounding water medium and sealed bubble diffuse reflection shock waves on the irregular surface of the gravel and in a high polymer material are utilized, the shock wave impulse and total energy are well weakened, the gravel is fixed through the wire meshes, the plastic deformation capacity of the protection mechanism is improved, the protection mechanism is not broken and falls off in the shock wave action process is ensured, the effective action time in the shock wave protection process is prolonged, so that hydraulic structures and other protected targets in an adjacent water area are protected from being damaged by underwater blasting shock waves.

Description

technical field [0001] The invention belongs to the technical field of blasting shock wave disaster protection for wading engineering, and specifically relates to a polymer gravel protection device for eliminating near-field underwater blasting shock waves. Background technique [0002] In recent years, the number of underwater blasting projects such as cofferdam demolition and underwater foundation excavation has continued to increase. It is often closer to the new intake gate. Due to the low compressibility, high density and high sound velocity of water, the explosion shock wave produced by explosives exploded underwater has the characteristics of high peak pressure, high impulse, and strong destructiveness. Therefore, the protection of short-distance underwater blasting shock waves has attracted increasing attention. [0003] In the prior art, there is no better structural device for the protection target of wading engineering to eliminate the hazard of underwater blasti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D5/045
CPCF42D5/045
Inventor 赵小华赵浩楠方宏远余翔杜雪明薛冰寒
Owner ZHENGZHOU UNIV
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