Engineering seismicinvestigation in city is limited by ground and conditions of seismic environment it is worked very difficult.
城市工程地震勘察因场地及地震环境条件的限制,其施工难度大。
2
It is shown from seismicinvestigation reports in several decades that this kind of structures do not function very well in the earthquake.
近几十年的震害资料显示,这种结构在地震中的抗震性能较差。
3
Based on the geological and seismicinvestigation results in North China, and the measurements of about 10 years GPS surveys, the mechanism of current North China geodynamics is discussed.