Abstract The monitoring project on Ming Dynasty Wall vibration influenced by explosion construction of Jiuhuashan tunnel in Nanjing is set forth. The project includes vibration test system，measuring points arrangement，collecting sensor installation and test parameter enactment. The safety-judging standard of monitoring is introduced. Via regression analysis of main frequency，acceleration，velocity and displacement in horizontal and vertical directions of measuring points on the basis of monitoring data，the attenuation laws of spread of explosion vibration is put forward. The main frequency of explosion vibration wave of measuring points in different quantities of detonator is discussed. In the same way，the explosion vibration acceleration，main frequency，main frequency field of the measuring points in different distances to center of explosion are analyzed. The spectrum characteristic of explosion vibration measuring points in different quantities of detonator but in same distance to explosion center and the spectrum change characteristic in transmission of explosion vibration earthquake waves are concluded. These will provide references to the similar projects.
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Received: 28 April 2007
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