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Underwater blasting impact wave protection device

A protection device and shock wave technology, applied in blasting and other directions, can solve the problems of high energy consumption and unsatisfactory attenuation effect, and achieve the effects of weakening shock wave impulse and total energy, reducing permeability and compacting cells

Active Publication Date: 2018-04-06
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 Air compressors work at the same time, high energy consumption

Method used

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Embodiment Construction

[0033] The underwater blasting shock wave protection device involved in the present invention will be described in detail below with reference to the accompanying drawings.

[0034]

[0035] Such as figure 1 with 2 As shown, the shock wave protection device 10 for underwater blasting includes: a bamboo raft compartment 11 , a plurality of connecting pieces 12 , and a plurality of counterweights 13 .

[0036] Such as image 3 As shown, the bamboo raft interlayer 11 is set at a position 1m to 6m in front of the gate A of the newly-built water inlet. The bamboo raft compartment 11 includes a plurality of bamboo poles 11a, and these bamboo poles 11a are bound into stacked bamboo rafts by binding ropes, and the thickness of the entire bamboo raft compartment 11 is 30cm-100cm.

[0037] In this embodiment, the bamboo stalk 11a adopted is moso bamboo 11a felled recently, with a moisture content greater than 40%, a bamboo age of more than 4 years, and a bamboo wall thickness great...

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Abstract

The invention provides an underwater blasting impact wave protection device which can effectively protect a target against damage of underwater blasting impact waves. The underwater blasting impact wave protection device is characterized by comprising a bamboo raft isolating layer, a plurality of connecting pieces and a plurality of additional weights; bamboo poles with the water content higher than 40% are bundled to be in a stacked bamboo raft shape, in the same row, vertical bamboo joints of adjacent bamboo poles are staggered, and the bamboo poles in adjacent rows are staggered; the upperends of the connecting pieces are fixed to the bottom of the bamboo raft isolating layer; and the additional weights are installed at the lower ends of the multiple connecting pieces, the total gravity is larger than buoyancy of the bamboo raft isolating layer in water, and bamboo barrels in the bamboo poles are not cracked.

Description

technical field [0001] The invention belongs to the technical field of underwater blasting shock wave disaster protection, and in particular relates to an underwater blasting shock wave protection device. Background technique [0002] In recent years, the number of underwater blasting projects such as cofferdam demolition and underwater foundation excavation has been increasing. At the same time, in actual projects, especially in machine expansion projects, in order to control the budget and reduce the amount of excavation, the reserved rock sill is often close to the newly-built intake gate. In order to reduce the impact of blasting shock waves in water, the commonly used method is to use differential blasting technology to reduce the amount of primary explosive, but the amount of primary explosive cannot be reduced without limit. Therefore, the protection of short-distance underwater blasting shock waves has been paid more and more attention. [0003] In the protection o...

Claims

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Application Information

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IPC IPC(8): F42D5/045
CPCF42D5/045
Inventor 王高辉赵小华卢文波严鹏陈明
Owner WUHAN UNIV
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