摘要
为了降低小净距隧道爆破振动对衬砌结构的影响,提高施工效率与安全性,本文首先介绍了工程概况,随后采用二维和三维有限元方法,分别分析了小净距隧道爆破振动对衬砌的横向和纵向影响。研究结果表明,爆破振动对衬砌结构产生明显应力波动,且净距越小,影响越显著。基于此,本文提出了针对性的工法优化措施,包括调整爆破参数、优化掘进顺序等。这些优化策略旨在有效控制爆破振动影响,为小净距隧道的施工提供科学依据和技术支持。
In order to reduce the impact of blasting vibration on the lining structure of small clearance tunnels,improve construction efficiency and safety,this article first introduces the engineering overview,and then uses two-dimensional and three-dimensional finite element methods to analyze the transverse and longitudinal effects of blasting vibration on the lining of small clearance tunnels.The research results indicate that blasting vibration produces significant stress fluctuations on the lining structure,and the smaller the net distance,the more significant the impact.Based on this,this article proposes targeted optimization measures for construction methods,including adjusting blasting parameters,optimizing excavation sequence,etc.These optimization strategies aim to effectively control the impact of blasting vibration and provide scientific basis and technical support for the construction of small clearance tunnels.
作者
张阳
Zhang Yang(China Railway 12th Bureau Group Railway Maintenance Engineering Co.,Ltd.,Chengdu,China)
出处
《科学技术创新》
2024年第22期157-160,共4页
Scientific and Technological Innovation
关键词
小净距
隧道
爆破
振动
工法优化
small net distance
tunnel
blasting
vibration
optimization of construction methods
