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[1]李清,马润东,周睿,等.大断面高铁隧道掘进爆破振动传播规律研究*[J].中国安全生产科学技术,2020,16(10):27-33.[doi:10.11731/j.issn.1673-193x.2020.10.004]
　LI Qing,MA Rundong,ZHOU Rui,et al.Study on propagation laws of blasting vibration during excavation of large section tunnel in highspeed railway[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(10):27-33.[doi:10.11731/j.issn.1673-193x.2020.10.004]
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大断面高铁隧道掘进爆破振动传播规律研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
16
期数:
2020年10期
页码:
27-33
栏目:
学术论著
出版日期:
2020-10-30

文章信息/Info

Title:
Study on propagation laws of blasting vibration during excavation of large section tunnel in highspeed railway
文章编号:
1673-193X(2020)-10-0027-07
作者:
李清; 马润东; 周睿; 徐文龙; 高正华; 霍树森
（中国矿业大学（北京） 力学与建筑工程学院，北京 100083）
Author(s):
LI Qing;  MA Rundong;  ZHOU Rui;  XU Wenlong;  GAO Zhenghua;  HUO Shusen
(School of Mechanics & Civil Engineering,China University of Mining & Technology (Beijing),Beijing 100083,China)
关键词:
大断面隧道; 爆破掘进; 爆破振动; 现场监测; 数值模拟
Keywords:
large section tunnel;  blasting excavation;  blasting vibration;  field monitoring;  numerical simulation
分类号:
X951；O327；O329
DOI:
10.11731/j.issn.1673-193x.2020.10.004
文献标志码:
A
摘要:
为研究隧道爆破掘进振动规律并合理控制爆破振动危害，对京张高铁大断面南口隧道爆破掘进过程进行实时监测，并对监测结果进行线性回归分析，求得3个监测方向的场地系数K和衰减系数α值以及爆破振动峰值速度衰减回归方程，通过FFT法计算出主振频率和爆破振动波的振动频率范围，利用ANSYS/LS-DYNA对爆破工程进行数值模拟。结果表明：喷锚支护和监测方向对爆破振动衰减回归分析影响较大；主振频率和爆破振动波的振动频率分布范围为50~300 Hz，无需考虑周边建筑共振情况,与周边古建筑和临近隧道的最小安全距离分别为147 m和12 m；数值模拟与实际结果对比发现二者振动峰值略有差别但整体趋势基本相同，证明建立模型的有效性。
Abstract:
To study the vibration laws in the blasting excavation of tunnels and reasonably control the hazard of blasting vibration,the blasting excavation process of Nankou large section tunnel in BeijingZhangjiakou highspeed railway was monitored in realtime,and the linear regression analysis on the monitoring results was conducted,then the site coefficient K and attenuation coefficients α values in three monitoring directions and the attenuation regression equation of peak blasting vibration velocity were calculated.The vibration frequency range of the main vibration frequency and the blasting vibration wave were calculated by the FFT method,and the numerical simulation of blasting engineering was carried out by using the ANSYS/LS-DYNA.The results showed that the shotcretebolt support and monitoring direction had great influence on the regression analysis of blasting vibration attenuation.The vibration frequency distribution of the main vibration frequency and the blasting vibration wave ranged from 50 Hz to 300 Hz,without necessary to consider the resonance of surrounding buildings,and the minimum safety distance of the surrounding historic buildings and adjacent tunnels was 147 m and 12 m,respectively.The comparison between the simulation and the actual results showed that both two vibration peaks were slightly different,but the overall trend was basically the same,which proved that the established model was effective.

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备注/Memo

备注/Memo:
收稿日期： 2019-12-19；网络首发日期： 2020-10-23
* 基金项目： 国家自然科学基金项目(51374212)；中国矿业大学（北京）大学生创新训练项目（C201906274）
作者简介： 李清，博士，教授，主要研究方向为爆破工程。
通信作者： 马润东，硕士研究生，主要研究方向为爆破工程。
更新日期/Last Update: 2020-11-21