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A micro-vibration blasting method for deep hole steps

A deep-hole ladder and micro-vibration technology, which is applied in the fields of highways, water conservancy and hydropower construction projects, municipal public works, and railways, can solve the problems of affecting construction progress and low construction efficiency, so as to improve efficiency, reduce single-sound dose, The Effect of Reducing the Vibration Velocity of Blasting Particles

Active Publication Date: 2015-12-09
SINOHYDRO BUREAU 14 CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, blasting with shallow holes and small steps is used to reduce the amount of single shot and control blasting vibration, but the construction efficiency of shallow hole blasting is low, which affects the construction progress

Method used

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  • A micro-vibration blasting method for deep hole steps
  • A micro-vibration blasting method for deep hole steps

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Embodiment Construction

[0010] Such as figure 2 As shown, the single blasting hole of the step blasting is charged in stages and blocked in stages, that is, the blockage section 6 at the hole and the blockage section 8 in the hole, and the charge section 7 in the hole adopts MS15, MS13, and MS11 respectively from bottom to top. Section millisecond differential time delay detonator, and lead it to the orifice, the orifice blocking section 6 is long blocking. Corresponding to each hole in the mining outside the hole, MS5 segment of millisecond differential delay detonator is connected in series, and an MS7 millisecond differential delay detonator is added in series between the first row of holes to the second row of holes, and the second row of holes to the third row of holes. Ensure single-hole single-shot, and finally form a single-hole single-shot blasting network. The millisecond differential delay detonator outside each hole is connected to the millisecond differential delay detonator in the hole...

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Abstract

The invention provides a deep-hole bench slight vibrating exploding method which comprises the following steps: decking and blocking in the deep hole exploring hole at intervals and blocking the opening of the hole, leading the sections with explosives to the opening of the hole through different differential millisecond detonators, forming a single hole single fire dynamite network through the different differential millisecond detonators outside the hole, each delay detector outside the hole is connected with a delay detector inside the hole educed to the opening of the hole, and is connected with a detonate electrical detonator and a exploder, so as to achieve the purpose of realizing single hole multi fire dynamite on the premise of single hole single fire dynamite. The method provided by the invention is suitable for deep-hole bench slight vibrating exploding close to residential area with special requirements (particle vibration velocity less than 0.2 cm / s), minimizes the single fire dynamite explosive volume, and realizes slight vibrating exploding. The method provided by the invention is reasonable in design and strong in practicality, improves the efficiency, and accelerates the construction progress.

Description

technical field [0001] The invention belongs to the fields of water conservancy and hydropower construction projects, highways, railways, municipal public works, etc., and specifically relates to a large-scale deep-hole step section stone excavation used for important buildings near residential areas and has strict requirements on blasting particle vibration. Dig micro-vibration blasting method. Background technique [0002] At present, in the construction blasting of water conservancy and hydropower, highways, railways, municipal projects, etc., the distance between the blasting operation surface and residential areas or other buildings is often too close to cause damage to residential buildings or other buildings due to excessive blasting vibration. It is necessary to minimize the impact of blasting hazards on the production and life of surrounding residents. How to reduce the impact of blasting vibration and other blasting hazards on surrounding facilities and residents' ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42D1/00F42D3/04
Inventor 程飞俞鸿林李文成姚珊宋卫民张述毕王来所钱宝聪郭福张朝刚焦战增田维维王涛陶海燕陈香荣杨睿姚田跃王振兵王义王博孙留阳韩伟刚吴会聪梁芳
Owner SINOHYDRO BUREAU 14 CO LTD
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