Research on Vibration Reduction Measures for Surrounding Environment in Hard Rock Excavation of Earth Pressure Balance Shield Tunneling
In order to address the vibration impact of shield tunneling on nearby villages during the construction of the Huang-Shang section of Xuzhou Metro Line 6,three effective vibration reduction measures were proposed after analyzing the principles,propagation characteristics,and influencing factors of vibration generation,including adjustment of shield tunneling parameters,bentonite mixed grouting,layout of vibration reduction holes.Firstly,the vibration reduction effect of each measure on the ground was tested separately,and then the three vibration reduction measures were comprehensively applied to shield tunneling construction to analyze the vibration reduction effects of different measures.Engineering measurement data shows that setting vibration reduction holes has the best vibration reduction effect in individual tests,and after applying various vibration reduction measures,the overall vibration speed of the ground is reduced by60%,significantly reducing the impact on residents and buildings on the ground.The research has certain reference value for vibration reduction measures in other engineering projects.
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