[1]李飞,孙飞,顾云,等.120 m高钢内筒钢混烟囱爆破拆除技术[J].爆破器材,2021,50(03):45-50.[doi:10.3969/j.issn.1001-8352.2021.03.009]
　LI Fei,SUN Fei,GU Yun,et al.Blasting Demolition and Pretreatment Technology of a 120 m High Reinforced Concrete Chimney with Steel Inner Cylinder[J].EXPLOSIVE MATERIALS,2021,50(03):45-50.[doi:10.3969/j.issn.1001-8352.2021.03.009]
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120 m高钢内筒钢混烟囱爆破拆除技术()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
50
期数:
2021年03
页码:
45-50
栏目:
爆破技术
出版日期:
2021-05-25

文章信息/Info

Title:
Blasting Demolition and Pretreatment Technology of a 120 m High Reinforced Concrete Chimney with Steel Inner Cylinder
文章编号:
5569
作者:
李飞; 孙飞; 顾云; 刘迪; 刘勤杰; 刘新
核工业南京建设集团有限公司（江苏南京，211102）
Author(s):
LI Fei;  SUN Fei;  GU Yun;  LIU Di;  LIU Qinjie;  LIU Xin
Nuclear Industry Nanjing Construction Group Co., Ltd. (Jiangsu Nanjing, 211102)
关键词:
钢内筒钢混烟囱; 预处理; 定向爆破
Keywords:
reinforced concrete chimney with steel inner cylinder;  pretreatment;  directional blasting
分类号:
TU746.5
DOI:
10.3969/j.issn.1001-8352.2021.03.009
文献标志码:
A
摘要:
在120 m高钢内筒钢筋混凝土烟囱的爆破拆除中，综合考虑工程环境、自身结构特征、安全作业等因素，采用了底部爆破、定向倒塌的控制爆破方案。钢内筒预处理过程中，为确保底部切口预切除后钢内筒的稳定性及烟囱倒塌过程中钢筋混凝土筒体与钢内筒的整体性，在首层检修平台切口侧对称设置4道6股φ10 mm的钢丝绳对钢内筒进行约束。爆破过程中，烟囱按预定方向顺利倒塌，各危害效应均控制在安全范围内，未出现异常情况，达到了预期的爆破效果。其经验可为类似爆破工程提供参考。
Abstract:
Aiming at the controlled blasting demolition of a 120 m high reinforced concrete chimney with inner steel cylinder, the controlled blasting scheme of directional collapse by bottom blasting was adopted considering the engineering environment, its own structural characteristics, safe operation and other factors. In order to ensure the stability of the steel inner cylinder after the pre resection of bottom incision and the integrity of the reinforced concrete cylinder and the steel inner cylinder during the collapse of the chimney, four 6-strands steel wire ropes with diameter of 10 mm were symmetrically set on the incision side of the maintenance platform at the first floor to constrain the steel inner cylinder. In the process of blasting, the chimney collapsed smoothly according to the predetermined direction, and each hazard effect was controlled within the safe range without any abnormal situation. The expected blasting effect was achieved, and the experience can provide reference for similar blasting projects.

参考文献/References:

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　YANG Jianjun,HUANG Lei,CAI Wei.Blasting Demolition of a Asymmetrical Building with a Reinforced Concreted Structure[J].EXPLOSIVE MATERIALS,2015,44(03):51.[doi:10.3969/j.issn.1001-8352.2015.04.012]
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备注/Memo

备注/Memo:
收稿日期：2021-01-22
第一作者：李飞（1980-），男，学士，爆破高级工程师，主要从事工程爆破。E-mail :1020403618@qq.com
通信作者：孙飞（1989-），男，硕士，工程师（采矿专业），研究方向为爆炸与毁伤作用机理研究及其应用。E-mail :1326662880@qq.com
更新日期/Last Update: 2021-05-25