朱定华;刘智飞;顾永远;邵剑;
ZHU Ding-hua;LIU Zhi-fei;GU Yong-yuan;SHAO jian;Institute of Geotechnical Engineering,Nanjing University of Technology;East-china Metallurgical Bureau of Geology & Exploration;

• 1:南京工业大学岩土工程研究所
• 2:华东冶金地质勘查局

摘要(Abstract)：

以南京城西水西门高架爆破工程为研究对象,对高架爆破倒塌触地时振动冲击波引起的冲击动土压力峰值、持时、衰减趋势等方面进行分析,得出触地引起的冲击动土压力主频为0¹0Hz,动土压力随深度增加呈指数衰减规律,为校核地铁隧道稳定性、确保高架桥下部隧道工程的安全提供参考。
Taking Shuiximen viaduct blasting engineering in western area of Nanjing as the research object,the impact dynamic earth pressure peak,duration and attenuation trend and so on caused by the vibration shock wave produced by collapsed viaduct had been analyzed.The result showed that the dominant frequency of dynamic earth pressure caused by collapsed viaduct was 010Hz,动土压力随深度增加呈指数衰减规律,为校核地铁隧道稳定性、确保高架桥下部隧道工程的安全提供参考。
Taking Shuiximen viaduct blasting engineering in western area of Nanjing as the research object,the impact dynamic earth pressure peak,duration and attenuation trend and so on caused by the vibration shock wave produced by collapsed viaduct had been analyzed.The result showed that the dominant frequency of dynamic earth pressure caused by collapsed viaduct was 0¹0Hz and the dynamic earth pressure obey exponential attenuation laws along with depth,which could provide a reference for checking the stability of subway tunnel and ensuring the security of the tunnel engineering under viaduct.

关键词(KeyWords)： 高架爆破;冲击;动土压力
Viaduct blasting;Shock;Dynamic earth pressure

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 朱定华;刘智飞;顾永远;邵剑;
ZHU Ding-hua;LIU Zhi-fei;GU Yong-yuan;SHAO jian;Institute of Geotechnical Engineering,Nanjing University of Technology;East-china Metallurgical Bureau of Geology & Exploration;

参考文献(References)：

• [1]龙源,亓秀泉,徐全军,等.控制爆破在江都大桥拆除中的应用[J].工程爆破,2007,13(4):66-68.
• [2]贺五一,杨智旭,田永良,等.复杂环境下城市高架桥控制爆破拆除[J].工程爆破,2012,18(4):71-74.
• [3]赵翔.某水泥矿山爆破震动信号小波分析与研究[D].武汉:武汉理工大学,2007.