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Blast construction method of orientation window of thick-wall brick chimney

A construction method and directional blasting technology, applied in blasting and other directions, can solve the problems of high labor intensity, low construction accuracy, poor safety, etc., and achieve the effects of low labor intensity, low overall construction cost, and low mechanical wear.

Inactive Publication Date: 2016-03-23
广东中人集团建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to provide a blasting construction method of a thick-walled brick chimney directional window, to solve the problem of high labor intensity, low work efficiency, low construction accuracy, Technical issues such as poor security

Method used

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  • Blast construction method of orientation window of thick-wall brick chimney
  • Blast construction method of orientation window of thick-wall brick chimney
  • Blast construction method of orientation window of thick-wall brick chimney

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Embodiment Construction

[0040] A method for blasting design and construction of a directional window in a thick-walled brick chimney. The directional window to be excavated is a right triangle ABC. The specific steps are as follows.

[0041]1. Carry out measurement and stakeout according to the blasting cut requirements in the blasting design plan, precisely stake out the specification, size and position of the directional window on the outer wall of the brick chimney, and use a total station for stakeout marking, and use the total station to self-orientate the top of the window The corners are marked point by point, including marking the three vertices and boundary lines of the directional window, and marking the three vertices and side lines of the triangular blasting area A'B'C'. The triangular directional window ABC, the triangular blasting area A′B′C′ and the thickness δ of the blasting protection layer are as follows: figure 1 , figure 2 shown.

[0042] 2. When the total station is staked ou...

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Abstract

The invention discloses a blast construction method of an orientation window in the demolition blasting process of a brick chimney. The orientation window is in a right triangle ABC shape. Lofting marking is carried out through a total station. The orientation window comprises triangular-orientation-window vertexes A, B and C and sides AB, AC and BC of the triangle. Protective layers are reserved at the portions, close to the sides, in the triangle ABC, the portion, left after the protective layers are reserved, of the triangle ABC of the wall of the chimney is in a triangle A'B'C' shape, hole distributing and hole drilling are carried out in the triangle A'B'C' of the outer wall of the chimney through an air drilling machine, and drilled holes include the blast holes and the guide hollow holes; and explosive charging blasting is carried out on the blast holes, bricks blasted to be loose are removed through a portable machine, the protective layers are removed through an air pick or other machines, and the bottom face and the slope of the triangular orientation window ABC are ground through tools such as a light cutting machine. The blast construction method has the beneficial effects that labor intensity is small, the construction progress is rapid, the construction period is shortened, mechanical abrasion is small, labor cost is low, comprehensive construction cost is low, the orientation window is accurately constructed, and it is guaranteed that the reserved portion, except for the orientation window, of the wall of the chimney is complete in structure, free of overexcavation and insufficient excavation and the like.

Description

technical field [0001] The invention belongs to the technical field of engineering blasting, and in particular relates to a blasting construction method of a directional window during the demolition blasting process of a brick chimney. Background technique [0002] With the rapid development of my country's industrialization process, many enterprises are facing relocation or equipment replacement. At the same time, in response to the national policy of energy saving, emission reduction and green environmental protection, many brick factories need to be closed, and many chemical plants need technological transformation. In these works, a large number of brick chimneys will be faced with the demolition problem. Among the demolition methods of brick chimneys, blasting demolition is a fast and safe construction method. [0003] The technical difference between blasting demolition of brick chimney and blasting demolition of reinforced concrete chimney: [0004] (1) Reinforced c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D3/02
CPCF42D1/00F42D3/02
Inventor 邢光武
Owner 广东中人集团建设有限公司
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