| 爆破开挖附近地铁隧道振动监测数值分析 |
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| 作者单位： | ;1.解放军理工大学野战工程学院;2.南京市城建集团 |
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| 摘 要： | 利用计算机数值模拟技术分析在既有地铁隧道附近进行隧道开挖时,使用掘进爆破对邻近地铁隧道的振动影响情况。通过计算爆破工作面距离地铁隧道不同位置的工况,得出地铁隧道截面各处的振动峰值速度,并与实际测量值进行比较分析,由此得到实际测点处速度峰值与地铁隧道内最大振动速度峰值的比值曲线和分布函数,从而对基于爆破振动安全阈值下的地铁隧道振动进行控制,对类似工程爆破振动监测可提供一定参考。
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| 关 键 词： | 地铁隧道 爆破振动 振动监测 数值模拟 |
NUMERICAL ANALYSIS OF THE SUBWAY TUNNEL VIBRATION MONITORING NEAR THE BLASTING EXCAVATION |
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| Abstract: | Blasting vibration effect on the existing subway tunnel produced from development blasting nearby which being under construction has been analyzed by using numerical simulation technology. Through numerical analysis on the condition of different distances between subway tunnel and blasting position,the peak velocities of different positions on the subway tunnel section were figured out and compared with the measured values,and then the ratio curve and distribution function of actual measuring points peak blasting velocities and the maximum peak blasting velocities were obtained.Thus was used to control the blasting vibration of subway tunnel and could provide a reference for similar projects. |
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| Keywords: | Subway tunnel Blasting vibration Vibration Monitoring Numerical simulation |
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