摘要
通过对朝东岩公路隧道爆破掘进过程中围岩振动的测试和数据分析 ,结果表明在隧道爆破掘进过程中 ,采用分段控制爆破在围岩中产生振动效应并不随同时起爆的装药量成正比增长 ,振动最大的是掏槽爆破 .不同围岩类别的应力波衰减规律有明显的差异 ,且均可用萨道夫斯基经验公式较好地模拟 .同时在围岩内应力波的频率有明显的变化规律 .
Based on the measurement and analysis of explosion vibration in the surrounding rock at the Chaodongyan tunnel,the propagation of blasting seismic wave was researched during tunnel excavations.The research results show that the magnitude of explosion vibration has a maximum in the first time excavations explosion.The propagation of blasting seismic wave is very distinctly different in the varied grade surrounding rock at tunnel,and it cal be interpreted by the experience relationship between the vibration velocity and distance.The main frequency of the blasting seismic waves varied with distance shows clearly a good orderliness.
出处
《重庆交通学院学报》
2002年第2期21-24,32,共5页
Journal of Chongqing Jiaotong University
基金
重庆市科技攻关项目 (2 0 0 1- 2 5 - 3)
湖北省恩施州 318国道资助项目
关键词
朝东岩隧道
围岩
振动测试
Chaodongyan tunnel
the surrounding rock
the measurement of explosion vibration
