Construction method for dismantling supports

A construction method and technology of construction plan, applied in excavation, infrastructure engineering, construction, etc., can solve the problems of difficult blasting construction and high strength of supporting concrete, and achieve the effect of ensuring safety, ensuring smooth implementation, and controlling noise

Inactive Publication Date: 2016-11-09
LONGYUAN CONSTR GROUP
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the reinforced concrete support of the project is planned to be demolished by blasting. The strength of the blasting support concrete is high, which brings certain difficulties to the blasting construction.

Method used

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  • Construction method for dismantling supports
  • Construction method for dismantling supports
  • Construction method for dismantling supports

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Embodiment Construction

[0093] Support removal construction method of the present invention, comprises the following steps:

[0094] 1. Blasting construction plan and process

[0095] 1) Control target

[0096] (1) Control the blasting vibration to ensure the safety of the foundation pit structure and surrounding buildings.

[0097] (2) Control the broken degree and broken range of the support, and control the flying stones within the scope of the foundation pit. The degree of fragmentation directly affects the construction period of the general contractor, and the blasting effect should be ensured as far as possible under the condition of technical measures.

[0098] (3) Control the impact of blasting dust on the environment.

[0099] (4) Control the noise and reduce it as much as possible, so as not to disturb the residents as much as possible. During the blasting process, the noise only lasts for 2-3 seconds and is not greater than 75 decibels.

[0100] (5) Control the hole layout position, h...

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Abstract

The invention relates to a construction method for dismantling supports. The construction method comprises the steps that the reinforced concrete supports of a project are dismantled with an open blasting method, blasting is conducted with the blasting method that the explosive quantity is small and millisecond blasting is achieved, the multiple supports are sequentially blasted from bottom to top, and each support is blasted in one time; and flying stone is defended with the method of building an all-closed protection shelter, and protective defense is conducted on some buildings and devices in special positions. According to the adopted construction method for dismantling the supports, blasting vibration can be controlled, and the safety of a foundation pit structure and the safety of surrounding buildings are ensured; the crushing degree and the crushing range of the supports can be controlled, and the flying stone can be controlled within the foundation pit range; the influence of blasting raised dust on the environment can be controlled; noise can be controlled, and no or few residents are disturbed; the safety of steel lattice piles and the safety of an underground envelop enclosure after blasting can be ensured; and the effects that the planned project duration is successfully achieved, and the overall construction progress of a primary contractor is not affected by blasting construction are ensured.

Description

technical field [0001] The invention relates to a method for removing reinforced concrete supports in engineering, in particular to a method for removing reinforced concrete supports by blasting. Background technique [0002] At present, the reinforced concrete support of the project is planned to be demolished by blasting. The strength of the blasting support concrete is high, which brings certain difficulties to the blasting construction. The impact of blasting vibration needs to be strictly controlled to ensure the safety of the buildings around the foundation pit and its own structure. Therefore, based on the blasting theory and the practical experience of nearly a hundred supports, the following solutions are needed: [0003] (1) Send the company's best personnel to manage, design, and construct, and assign special personnel to be responsible for the coordination of surrounding personnel and units. [0004] (2) Formulate careful blasting scheme and blasting plan to en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/02
CPCE02D17/02
Inventor 姚军姚思琦赵亚汪立焕
Owner LONGYUAN CONSTR GROUP
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