[1]高军伟①,赵岩②③,王奔①.立体交叉铁路隧道爆破振动效应的研究[J].爆破器材,2023,52(06):39-47.[doi:10.3969/j.issn.1001-8352.2023.06.007]
　GAO Junwei,ZHAO Yan,WANG Ben.Vibration Law in the Blasting of Railway Tunnels with Interchange[J].EXPLOSIVE MATERIALS,2023,52(06):39-47.[doi:10.3969/j.issn.1001-8352.2023.06.007]
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立体交叉铁路隧道爆破振动效应的研究()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
52
期数:
2023年06
页码:
39-47
栏目:
爆破技术
出版日期:
2023-12-05

文章信息/Info

Title:
Vibration Law in the Blasting of Railway Tunnels with Interchange
文章编号:
5815
作者:
高军伟①; 赵岩②③; 王奔①
①中铁隧道集团三处有限公司（重庆，401121）
②河北建筑工程学院土木工程学院（河北张家口，075000）
③河北省土木工程诊断、改造与抗灾重点实验室（河北张家口，075000）
Author(s):
GAO Junwei①;  ZHAO Yan②③;  WANG Ben①
①Sanchu Co., Ltd., China Railway Tunnel Group (Chongqing, 401121)
②School of Civil Engineering, Hebei University of Architecture (Hebei Zhangjiakou, 075000)
③Key Laboratory of Civil Engineering Diagnosis, Reconstruction and Disaster Resistance, Hebei Province (Hebei Zhangjiakou, 075000）
关键词:
交叉隧道; 爆破振动响应; 量纲分析; 安全控制; 爆破振动频率
Keywords:
crossed tunnels;  blasting vibration response;  dimensional analysis;  safety control;  blasting vibration frequency
分类号:
TD235; O383
DOI:
10.3969/j.issn.1001-8352.2023.06.007
文献标志码:
A
摘要:
依托京张高铁某交叉隧道工程，研究既有隧道二次衬砌在下部隧道爆破载荷作用下的动力响应特征。基于萨道夫斯基公式，以隧道交叉断面为界，研究交叉点分别位于掌子面前方及后方时对应的爆破振动峰值速度及振动主频率的衰减规律。为了弥补现有爆破安全规程中分段考虑频率影响方法的不足，通过回归分析的方式得到爆破振动峰值速度与主频率之间的数学关系，定量考虑爆破振动频率对爆破振动响应特征的影响。计算结果表明，综合考虑爆破振动频率与既有隧道自振频率的影响，优化计算得到的爆破振动峰值速度vPPS小于实测振动数据vPP。针对本交叉隧道爆破工程，下部隧道爆破施工对既有隧道的振动影响在可控范围内。
Abstract:
Based on a blasting project of crossed tunnels of Beijing-Zhangjiakou High-Speed Railway, the dynamic response of the secondary lining of an existing tunnel to the blasting loads from the lower tunnel was studied. Based on Sadowski’s formula, the attenuation laws of the peak velocity and main frequency of blasting vibration corresponding to the intersection points located in front of and behind the tunnel face were studied with the tunnel intersection section as the boundary. In order to compensate for the shortcomings of the method of segmented frequency influence in existing blasting safety regulations, the mathematical relationship between the peak velocity of blasting vibration and the main frequency was obtained through regression analysis, and the impact of blasting vibration frequency on the response characteristics of blasting vibration was quantitatively analyzed. The calculation results indicate that, taking into account the influence of blasting vibration frequency and existing tunnel natural vibration frequency, the optimized vPPS?is smaller than the measured vibration data vPP 。 In this blasting project of crossed tunnels, the vibration impact of the lower tunnel blasting construction on the existing tunnel is within a controllable range.

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备注/Memo

备注/Memo:
收稿日期：2023-01-28
基金项目：国家自然科学基金（51878242）；河北省创新能力提升计划项目（21567614H）
第一作者：高军伟（1984-），男，工程师，研究方向为桥梁与隧道工程。E-mail: 762696671@qq.com
通信作者：赵岩（1991－），男，博士，研究方向为隧道爆破振动。E-mail: 304965624@qq.com
更新日期/Last Update: 2023-12-04