Influence of blasting vibration on adjacent buildings of station tunnel |
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作者姓名: | ZHU Ze bing ZHANG Yong xing LIU Xin rong and ZHAO Bao yun |
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作者单位: | College of Civil Engineering, Chongqing University, Chongqing 400045, P.R. China;College of Civil Engineering, Chongqing University, Chongqing 400045, P.R. China;College of Civil Engineering, Chongqing University, Chongqing 400045, P.R. China;College of Civil Engineering, Chongqing University, Chongqing 400045, P.R. China |
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摘 要: | The influence of blasting vibration on the adjacent buildings is inevitable if blasting is employed for excavation. Daping station tunnel of Chongqing light railway project, on which there is dense with population and buildings, has a minimum buried depth of only four meters and maximum span length of 26.3 meters. The stepped excavation mode with short hole, multi round and V shaped cut are adopted. The maximum charge weight of one delayed interval is determined by the permitted vibration velocity. The smooth blasting technology with adding vibration reduction holes is used. Meanwhile, the charge weight per hole is strictly controlled. With the simulation and on site test, it is found that the proposed technology for tunnel construction is feasible.
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关 键 词: | light railway tunnel blasting vibration |
收稿时间: | 2009/10/19 0:00:00 |
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