市政技术2026，Vol.44Issue(3)：210-218,9.DOI:10.19922/j.1009-7767.2026.03.210
隧道下穿古长城掘进爆破振动现场试验与控制技术研究
Study on Field Test and Control Technology of Blasting Vibration of the Tunnel Crossing the Ancient Great Wall
李宽 1周冲 2杨贤 3李超 1陶新军 2赵金龙 1张小军3
作者信息
- 1. 北京中科力爆炸技术工程有限公司,北京 100101
- 2. 中交路桥建设有限公司,北京 101107
- 3. 北京工业大学,北京 100124
- 折叠
摘要
Abstract
Based on the Hongshimen Tunnel cross the ancient Great Wall project in Pinggu District,Beijing,on-site vibration monitoring and signal analysis research were conducted on the vibration effects caused by tunnel blasting construction.A multi-point monitoring system was deployed to collect vibration data on the surface of the Great Wall.The research results show that the vertical component vibration is the most significant and is a key factor affecting the structural safety of the ancient Great Wall.Based on the Hilbert-Huang transform(HHT),the time-frequency-energy characteristics of vibration signals was analyzed.It was found that the blasting energy was mainly concentrated within the range of 0.1～0.4 s and 40～60 Hz after blasting,with low overlap with the common natural frequencies of ancient buildings and low resonance risk.The regression analysis results show that when the distance between the palm face and the ancient Great Wall is less than 10 meters,the vibration velocity approaches the limit value of GB 6722-2014 Safety Regulations for Blasting,and vibration control needs to be strengthened.On this basis,a wedge-shaped groove segmented precise delayed blasting technology was proposed.The experimental results show that optimizing the slot delay time(40～60 ms)will increase the vibration reduction rate to 18％and control the vibration velocity at the ancient Great Wall below 0.2 cm/s,meeting the requirements of cultural relic protection.This research result can provide scientific basis for blasting construction of tunnels cross the cultural heritage with important reference value for similar projects.关键词
隧道爆破/古长城/爆破振动/频谱特征/振动控制Key words
tunnel blasting/the ancient Great Wall/blasting vibration/spectral characteristics/vibration control分类
交通工程引用本文复制引用
李宽,周冲,杨贤,李超,陶新军,赵金龙,张小军..隧道下穿古长城掘进爆破振动现场试验与控制技术研究[J].市政技术,2026,44(3):210-218,9.
