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Symmetrical double-rotation blasting method

A symmetrical, cooling tower technology, applied in the field of blasting, can solve the problems of poor disintegration effect of cooling towers, damage to surrounding facilities, large processing workload, etc., and achieve the effect of reducing demolition cost, workload and cost of demolition.

Active Publication Date: 2013-06-12
姬云峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the disintegration effect of the cooling tower is not good, the post-processing workload is large, the cost is high, and the surrounding facilities are damaged.

Method used

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  • Symmetrical double-rotation blasting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The invention provides a symmetrical swing blasting method, which comprises the following steps:

[0023] (1) Remove all structures inside the cooling tower;

[0024] (2) Set the load-relief window 2 on the cooling tower ring beam 6 and its upper cylinder, and set the disassembly window 1 on the upper part of the load-relief window 2;

[0025] (3) Arrange a blasthole 5 on the ring beam 6 between the herringbone leg 4 and the unloading window 2, and install the nonel detonator and explosive in the blasthole 5;

[0026] (4) Simultaneously ignite and detonate at two gun positions symmetrical to the center of the cooling tower bottom, and the two detonation points rotate symmetrically clockwise or counterclockwise at the same time to form two instantaneous detonations

Embodiment 2

[0028] The invention provides a symmetrical swing blasting method, which comprises the following steps:

[0029] (1) Remove all structures inside the cooling tower;

[0030] (2) Set the load-relief window 2 on the cooling tower ring beam 6 and its upper cylinder, and set the disassembly window 1 on the upper part of the load-relief window 2;

[0031] (3) Arrange a blasthole 5 on the ring beam 6 between the herringbone leg 4 and the unloading window 2, and install the nonel detonator and explosive in the blasthole 5;

[0032] (4) Simultaneously ignite and detonate at two gun positions symmetrical to the center of the cooling tower bottom, and the two detonation points rotate symmetrically clockwise or counterclockwise at the same time to form two instantaneous detonations.

[0033] The height of the top of the dismantled window 1 from the ground in step (2) is 20%-25% of the height of the cooling tower.

[0034] The load-reducing window 2 described in step (2) has a width of ...

Embodiment 3

[0037] The symmetrical swing blasting method for dismantling the cooling tower provided by the invention comprises the following steps:

[0038] (1) Remove all structures inside the cooling tower;

[0039] (2) Set the load-reducing window 2 on the cooling tower ring beam 6 and its upper cylinder, and set the dismantling window 1 on the upper part of the load-reducing window 2; the height of the top of the dismantling window 1 from the ground is 20% of the height of the cooling tower; The width of the load-reducing window 2 is 1.5 meters, and the spacing is 9 meters; the width of the dismantling window is 1.5 meters, and the spacing is 9 meters. After the form is set, the steel bar 3 is exposed

[0040] (3) Arrange a blasthole 5 on the ring beam 6 between the herringbone leg 4 and the unloading window 2, and install the nonel detonator and explosive in the blasthole 5;

[0041] (4) Simultaneously ignite and detonate at two gun positions symmetrical to the center of the coolin...

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Abstract

The invention discloses a symmetrical double-rotation blasting method. The symmetrical double-rotation blasting method comprises the following steps of: (1) completely dismantling construction objects inside a cooling tower; (2) arranging load reducing windows on the ring beam of the cooling tower and an upper barrel body, and arranging disintegration windows at the upper parts of the load reducing windows; (3) forming blast holes on the parts without the load reducing windows on a herringbone supporting leg and the ring beam, and arranging conducting tube detonators and explosive in the blast holes; and (4) detonating two points in central symmetry on the bottom circle center of the cooling tower at the same time, wherein the two detonating points are simultaneously and symmetrically rotated at constant speed explosion along clockwise or counterclockwise direction to form two instantaneous blasting openings. According to the method, surrounding facilities can be prevented from being damaged, and the cooling tower is good in disintegration effect, the dismantling cost is reduced, the method is applicable for blasting and dismantling cooling towers under various complicated conditions, the engineering investment can be saved, and the engineering process is quickened.

Description

technical field [0001] The invention belongs to the technical field of blasting, and in particular relates to a symmetrical double-rotation blasting method for a cooling tower. Background technique [0002] The cooling tower is a reinforced concrete thin shell structure of a hyperbolic space rotating body. The bottom diameter is large, the upper diameter is small, the upper diameter is larger than the middle diameter, and the aspect ratio is small. The lower part is supported by dozens of pairs of herringbone outriggers, the thickness of the lower ring beam is 0.4m-0.5m, the thickness of the cylinder is from 0.4m-0.5m in the lower part to 0.14m-0.2m in the upper part, double-layer reinforcement. At present, the method of dismantling the cooling tower mostly adopts the method of directional blasting. This method includes that the cooling tower under the blasting directly hits the surrounding facilities, causing flying stones and high-pressure airflow to cause damage to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D3/02
Inventor 姬云峰姬震西姬荣锋
Owner 姬云峰
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