| 地铁浅埋隧道爆破振动监测及HHT信号分析 |
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| 引用本文： | 刘冬,高文学,石连松,王林台,曹晓立.地铁浅埋隧道爆破振动监测及HHT信号分析[J].北京理工大学学报,2018,38(S2):14-17. |
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| 作者姓名： | 刘冬 高文学 石连松 王林台 曹晓立 |
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| 作者单位： | 北京工业大学 建筑工程学院, 北京 100124;北京市道路工程质量监督站, 北京 100076,北京工业大学 建筑工程学院, 北京 100124,北京工业大学 建筑工程学院, 北京 100124,北京工业大学 建筑工程学院, 北京 100124,北京工业大学 建筑工程学院, 北京 100124 |
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| 基金项目： | 国家自然科学基金资助项目（51538001） |
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| 摘 要： | 为解决地铁浅埋隧道掘进过程中爆破振动对地铁施工安全及周围建构筑物的影响.论文以新疆乌鲁木齐市地铁1号线东线隧道中营工-小西沟区间段为工程背景，对地铁隧道掘进爆破时地表产生的振动效应进行了多次监测，得出地表振动速度自掌子面正上方向两边逐渐减小；将爆破产生的振动信号通过HHT方法变换，发现隧道掘进爆破产生的振动信号，其能量主要分布在时间段0~1.2 s，其频率主要分布在频率段0~60 Hz之间.采用掏槽孔分段起爆技术，显著降低爆破振动效应，同时有效控制了隧道爆破施工对周围建构筑物的影响.
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| 关 键 词： | 浅埋隧道 爆破振动 HHT变换 振动能量 |
| 收稿时间： | 2018/12/1 0:00:00 |
Surface Vibration Test and HHT Signal Analysis of Explosion in Subway Shallow Buried Tunnel |
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| LIU Dong,GAO Wen-xue,SHI Lian-song,WANG Lin-tai and CAO Xiao-li.Surface Vibration Test and HHT Signal Analysis of Explosion in Subway Shallow Buried Tunnel[J].Journal of Beijing Institute of Technology(Natural Science Edition),2018,38(S2):14-17. |
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| Authors: | LIU Dong GAO Wen-xue SHI Lian-song WANG Lin-tai and CAO Xiao-li |
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| Affiliation: | College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;Beijing Road Engineering Quality Supervision Station, Beijing 100068, China,College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China,College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China,College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China and College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China |
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| Abstract: | To eliminate the effect of blasting vibration on subway construction and the surrounding structures in shallow buried tunnel, several vibration monitoring tests were conducted on the Zhongyinggong-Xiaoxigou segment of Xinjiang Urumqi Line 1 subway tunnel surface. The vibration velocity decreases gradually. By HHT transform analysis of blasting vibration signal, it is concluded that the vibration energy generated by blasting is mainly distributed in the time period of 0~1.5 s and low frequency band of 0~50 Hz. Dividing cut holes into several segments can significantly reduce the surface vertical vibration velocity, and it effectively control the impact of the tunnel blasting construction on the surrounding structures. |
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| Keywords: | shallow buried tunnel blasting vibration HHT transform vibration energy |
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