| 软弱围岩中连拱隧道爆破震动测试分析 |
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| 引用本文： | 张建伟,王永东,周慧君,罗浩.软弱围岩中连拱隧道爆破震动测试分析[J].筑路机械与施工机械化,2013(11):100-103. |
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| 作者姓名： | 张建伟 王永东 周慧君 罗浩 |
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| 作者单位： | [1]杭州市交通工程质量安全监督局,浙江杭州310014 [2]长安大学公路学院,陕西西安710064 |
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| 基金项目： | 浙江省交通厅科技计划项目（2009H66） |
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| 摘 要： | 结合闲林隧道爆破施工,对软弱围岩中连拱隧道爆破震动进行监测,分析了震动波在软弱围岩和支护结构中的传播及分布规律.研究表明,爆破最大振速一般出现在第一个峰值上；爆破震动对爆破面前后10 m范围内的中隔墙影响较大,随着距离的增大,震动波衰减明显；建议软弱围岩中连拱隧道开挖最大装药量控制在8 kg以内.研究结论可为类似条件下连拱隧道的爆破施工参数设计和现场监测提供借鉴与参考.
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| 关 键 词： | 隧道工程 软弱围岩 连拱隧道 爆破测试 |
Measurement and Analysis of Blasting Vibration in Double-arch Tunnel with Weak Surrounding Rock |
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| ZHANG Jian-wei,WANG Yong-dong,ZHOU Hui-jun,LUO Hao.Measurement and Analysis of Blasting Vibration in Double-arch Tunnel with Weak Surrounding Rock[J].Road Machinery & Construction Mechanization,2013(11):100-103. |
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| Authors: | ZHANG Jian-wei WANG Yong-dong ZHOU Hui-jun LUO Hao |
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| Institution: | 1. Hangzhou Traffic Engineering Quality Safety Supervision Bureau, Hangzhou 310014, Zhejiang, China; 2. School of Highway, Chang＇an University, Xi＇an 710064, Shaanxi, China) |
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| Abstract: | Combined with the blasting construction of Xianlin ＂I＇unnel, the blasting vibration in double-arch tunnel with weak surrounding rock was measured. The propagation and distribution characteristics of vibration waves in the weak surrounding rock and supporting structure were analyzed. The results show that blasting maximum vibration velocity often appears in the first peak, the disturbance range of blasting vibration to partition wall is 10 m apart from the blasting working face. With the distance increasing, the shock wave is attenuated significantly. Doublearch tunnel excavation maximum loading dynamite would be controlled within 8 kg in weak surrounding rock. The experience and conclusions presented can be referred in the design of blasting parameters and site monitoring of similar tunnels. |
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| Keywords: | tunnel engineering weak surrounding rock double-arch tunnel blasting measurement |
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