公路隧道爆破振动对洞口区域建筑物的影响研究
Study on the Influence of Blasting Vibration of Highway Tunnel on the Regional Buildings at the Entrance
陆瑜 1宋超1
作者信息
- 1. 贵州省交通规划勘察设计研究院股份有限公司,贵阳 550081
- 折叠
摘要
在贵州省高速公路某隧道进行爆破开挖时,采用现场监测的方法研究隧道爆破振动对洞口区域建筑物的影响.依据测点布设原则,选取爆破振动影响区域具有代表性的4栋区域建筑物开展监测,根据第一次监测结果,结合现场的实际情况,确定区域建筑物的爆破振动安全允许标准为2.0cm/s,以此推算爆破作业最大段装药量的限定范围为12.3～13.2 kg,据此将最大段装药量调整为13.0kg.调整爆破方案后的监测结果表明:4个测点的峰值振速均小于2.0 cm/s,结合调整爆破方案前和调整爆破方案后的现场调研情况,验证选定的区域建筑物振动控制标准和最大段装药量取值的建议是合理可行的.
Abstract
While blasting a highway tunnel in Guizhou province,the influence of blasting vibration of the tunnel on the regional buildings at the entrance is studied by field monitoring method.According to the principle of measuring point layout,four representative houses in the area affected by blasting vibration are selected for monitoring.According to the first monitoring results and the actual situation of the site,the blasting vibration safety allowable standard of the regional buildings is determined to be 2.0 cm/s,and the limited charge range of the maximum section of blasting operation is calculated to be 12.3-13.2 kg.The maximum charge in the single section is adjusted to 13.0 kg.The monitoring results after adjusting the blasting plan show that the peak vibration velocity of the four measuring points is less than 2.0 cm/s.Combined with the field investigation before and after adjusting the blasting plan,it is verified that the selected vibration control standard of the regional buildings and the proposal for selecting the maximum charge value are reasonable.
关键词
隧道爆破/方案比选/振动监测/安全值/峰值振速/最大段装药量Key words
tunnel blasting/scheme comparison/vibration monitoring/safety value/peak vibration velocity/maximum segment charge引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据