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首页> 外文会议>International Conference on Applied Mechanics and Mechanical Engineering >Monitoring and Analysis of Blasting Vibration of Diversion Tunnel Excavation in Layered Rock Mass
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Monitoring and Analysis of Blasting Vibration of Diversion Tunnel Excavation in Layered Rock Mass

机译：分层岩体隧道挖掘爆破振动监测与分析

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摘要

In order to insure the safety and stability of the existed dam body and dam curtain during the diversion tunnel excavation, the vibration velocities were analyzed based on in-site blasting vibration monitoring. Result shows that the elevation difference between explosion point and monitoring points has a great impact on the vibration velocity in addition to single fire dynamite and blast center distance. During data analysis, the traditional empirical formula of attenuation of blasting earthquake must be amended. Through contrasting and analyzing, the amended formula of attenuation of blasting earthquake wave is precise relatively. At the same time, two collapses during the diversion tunnel excavation were analyzed based on the characteristics of layered rock mass and fault distribution, and the explosion parameters were optimized, so that the damage effect of blasting vibration was controlled effectively. This research also takes a good effect in other similar works.
机译：为了确保存在坝体和坝窗帘的安全性和稳定性在引流隧道挖掘过程中，基于现场爆破振动监测分析振动速度。结果表明，除了单火力炸药和喷砂中心距离外，爆炸点和监测点之间的高度差异对振动速度产生了很大的影响。在数据分析期间，必须修改传统的爆破地震衰减经验公式。通过对比和分析，爆破地震波的衰减的修正公式相对精确。同时，基于层状岩石质量和故障分布的特性分析了两种坍塌，分析了分层岩石质量和故障分布的特点，并优化了爆炸参数，从而有效地控制了爆破振动的损伤效果。这项研究也对其他类似作品产生了良好的效果。

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