[1]林飞.大型构筑物拆除爆破振动与塌落触地振动分析[J].爆破器材,2019,48(05):61-64.[doi:10.3969/j.issn.1001-8352.2019.05.012]
 LIN Fei.Analysis of Blasting Vibration and Collapse Ground-touching Vibration in Demolition of Large Structures[J].EXPLOSIVE MATERIALS,2019,48(05):61-64.[doi:10.3969/j.issn.1001-8352.2019.05.012]
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大型构筑物拆除爆破振动与塌落触地振动分析()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
48
期数:
2019年05
页码:
61-64
栏目:
爆破技术
出版日期:
2019-09-29

文章信息/Info

Title:
Analysis of Blasting Vibration and Collapse Ground-touching Vibration in Demolition of Large Structures
文章编号:
5319
作者:
林飞
中煤科工集团淮北爆破技术研究院有限公司(安徽淮北,235000)
Author(s):
LIN Fei
Huaibei Blasting Technology and Engineering Institute Co., Ltd., CCTEG (Anhui Huaibei, 235000)
关键词:
石灰窑爆破拆除爆破振动塌落触地振动振动测试大型构筑物
Keywords:
lime kiln blasting demolition blasting vibration collapse ground-touching vibration vibration test large structures
分类号:
TU746.5
DOI:
10.3969/j.issn.1001-8352.2019.05.012
文献标志码:
A
摘要:
对某两连体石灰窑的拆除爆破振动进行了监测,采集了石灰窑爆破及塌落产生的振动数据。石灰窑拆除塌落触地振动的场地常数K为0.132,衰减指数α为1.489,得出石灰窑塌落触地振动经验公式。爆破振动最大振动速度为3.287 cm/s,主频主要集中在6.104~28.076 Hz;塌落触地振动最大振动速度为7.322 cm/s,主频主要集中在2.441~6.714 Hz。塌落触地振动速度比爆破振动速度大,主频更接近建筑物的固有频率,因此,在大型构筑物倒塌方向应采取缓冲措施。这些资料可为石灰窑、烟囱及楼房等大型建筑物的爆破拆除设计及对周围环境的影响评估提供参考。
Abstract:
Demolition blasting vibration of a two-piece lime kiln was monitored, and the vibration data generated by blasting and lime kiln collapse were collected. The site constant K of the limestone kiln’s collapse and ground vibration is 0.132, and the attenuation index α is 1.489. Empirical formula of the lime kiln collapse grounding vibration was obtained. The maximum vibration velocity of blasting vibration is 3.287 cm/s, and the main frequency is mainly concentrated at 6.104-28.076 Hz. The maximum vibration velocity of collapse grounding vibration is 7.322 cm/s, and the main frequency is mainly concentrated at 2.441-6.714 Hz. Collapse ground-touching vibration speed is greater than that of blasting vibration, and the main frequency is closer to the natural frequency of the building. Therefore, buffer measures should be taken in the collapse direction of large structures. The study can provide reference for the blasting demolition design of large buildings such as lime kiln, chimney and buildings and the impact assessment of the surrounding environment.

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备注/Memo

备注/Memo:
收稿日期:2019-01-04
第一作者:林飞(1989-),男,工程师,研究方向为露天矿山与煤矿井下爆破的理论与技术。E-mail:357028615@qq.com
更新日期/Last Update: 2019-09-29