The Comparison Test Analysis of Environment Seismic Noise on Ground Surface and Underground at Shantou Pilot Hole
GUO Deshun
CHEN Jiantao
XIE Jianbo
YE Chunming
Abstract：The test well located in Hengshan road of Shantou, and the pilot hole observation system consist of the model TBG-60B bore-hole wide frequency seismometer and the model TDV-60B surface wide frequency seismometer with the frequency band of 60 s~50 Hz both. The authors have concluded the contrast relationship between the hole depth and the observation seismic noise through researching variation characteristics of station environment seismic noise with pilot hole depth by using the seismic noise analysis software belongs to Tong Wanglian and the MATLAB software on the premise of selecting the observation data between ground surface and underground corresponding to the same time, which supplied the basic data of seismic station exploration in underground and engineering construction. The results show that seismic noise level has significant change from overburden to bedrock and from strongly-weathered bed to intermediately-weathered bed also including weakly-weathered bed. The optimized equilibrium is to enter the whole intermediately-weathered bed and weakly-weathered bed 10 meters at least, considering the comprehensive benefit between the drilling construction cost and station construction seismic noise requirement in special geological structure conditions of east-area in Guangdong.
Keywords：Environment seismic noiseGround surface and undergroundWide frequency seismometerShantou pilot hole
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 57-64 )