Journal of Synchrotron Radiation

Volume 15, Part 4 (July 2008)

research papers

J. Synchrotron Rad. (2008). 15, 350-354 [ doi:10.1107/S0909049508003695 ]

Measurement of underground motion at the SSRF site

X. Wang, L. Chen, H. Du and L. Yin

Abstract: For the Shanghai Synchrotron Radiation Facility (SSRF) and future Shanghai Free-Electron Laser projects, ground vibration is an important factor and, in order to attenuate it, the construction of a deep tunnel is under consideration. This paper concentrates on the investigation of ground vibration at different underground levels down to 60 m below surface, in order to understand the effect of vibration attenuation with depth. The effect of traffic is also studied using a 10 ton truck, with ground motion compared in different directions. Finally, a summary and some suggestions on these two projects are given.

Keywords: ground vibration; attenuation; depth; heavy truck.