[1]刘欢①,王欢①,薛育阳①,等.小净距隧道爆破施工对邻近裂缝隧道动力响应的影响[J].爆破器材,2025,54(04):55-64.[doi:10.3969/j.issn.1001-8352.2025.04.009]
　LIU Huan,WANG Huan,XUE Yuyang,et al.Influences of Blasting Construction of the Small Clear Distance Tunnel on Dynamic Response of the Adjacent Lining Cracked Tunnel[J].EXPLOSIVE MATERIALS,2025,54(04):55-64.[doi:10.3969/j.issn.1001-8352.2025.04.009]
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小净距隧道爆破施工对邻近裂缝隧道动力响应的影响(/HTML)

《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
54
期数:
2025年04
页码:
55-64
栏目:
爆破技术
出版日期:
2025-07-08

文章信息/Info

Title:
Influences of Blasting Construction of the Small Clear Distance Tunnel on Dynamic Response of the Adjacent Lining Cracked Tunnel
文章编号:
5983
作者:
刘欢①; 王欢①; 薛育阳①; 曾卓①; 梁淦波②; 汪波③
①广东省路桥建设发展有限公司（广东广州，510990）②广东省交通规划设计研究院集团股份有限公司（广东广州，510507）③西南交通大学土木工程学院（四川成都，610031）
Author(s):
LIU Huan①;  WANG Huan①;  XUE Yuyang①;  ZENG Zhuo①;  LIANG Ganbo②;  WANG Bo③
①Guangdong Road and Bridge Construction and Development Co., Ltd. (Guangdong Guangzhou, 510990)
②Guangdong Communication Planning & Design Institute Group Co., Ltd. (Guangdong Guangzhou, 510507)
③School of Civil Engineering, Southwest Jiaotong University (Sichuan Chengdu, 610031）
关键词:
小净距隧道; 爆破; 改、扩建; 裂缝; 动力响应
Keywords:
small clear distance tunnel;  blast;  reconstruction and expansion;  crack;  dynamic response
分类号:
TD235.4; U455.6
DOI:
10.3969/j.issn.1001-8352.2025.04.009
文献标志码:
A
摘要:
为研究小净距隧道爆破施工时邻近衬砌裂缝隧道的动力响应规律，采用数值模拟方法，研究了不同围岩级别下衬砌裂缝的不同分布位置和深度对爆破动力响应的影响规律。结果表明：不同围岩级别下，衬砌裂缝的不同分布位置和深度对既有隧道衬砌的振速响应无明显影响；而对既有隧道衬砌的应力响应存在一定影响。影响仅在裂缝附近，且随着分布位置、尺寸及围岩级别的不同而不同。既有隧道衬砌不同位置存在裂缝时，对结构拉应力均存在一定的放大效应。当迎爆侧边墙存在裂缝时，放大效应最显著。既有隧道衬砌同一位置处裂缝越深，附近主拉应力越大。围岩级别越高，裂缝附近主拉应力放大效应越明显。当以振速作为新建隧道爆破施工过程中邻近裂缝隧道的安全控制基准表征值时，应适当降低裂缝处振速的控制值，降低程度随裂缝分布位置和深度的不同而不同。
Abstract:
In order to study the dynamic response law of adjacent lining crack tunnels during blasting construction of small clearance tunnels, numerical simulation methods were used to study the effect of different distribution positions and depths of lining cracks in different levels of rock on blasting dynamic response. The results show that the different distribution positions and depths of lining cracks in different levels of rock have no significant impact on the vibration velocity response of the lining of existing tunnels. But there is a certain impact on the stress response of the lining of existing tunnels. The impact is only near the cracks and varies with the distribution positions, sizes, and rock levels. When there are cracks in different positions of the lining of existing tunnels, there is a certain amplification effect on the tensile stress of the structure. The amplification effect is most significant when there are cracks in the side walls facing the explosion. At the same position of the lining of the existing tunnel, the deeper the cracks, the greater the nearby principal tensile stress. The higher the level of the rock, the more significant the amplification effect of the principal tensile stress near the crack. When using vibration velocity as the safety control benchmark for adjacent cracked tunnels during the blasting construction process of new tunnels, the control value of vibration velocity at the crack location should be appropriately reduced, and the degree of reduction varies with the distribution position and depth of the crack.

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备注/Memo

备注/Memo:
收稿日期：2024-11-01
基金项目：广东交通集团科技项目（JT2022YB26）
第一作者：刘欢（1989—），男，工程师，主要从事高速公路施工技术管理。E-mail: 371506587@qq.com
通信作者：汪波（1975—），男，博士，教授，主要从事隧道及地下工程方面的研究工作。E-mail: ahbowang@163.com
更新日期/Last Update: 2025-07-08