Abstract：Research purposes: This paper describes the geographical background of the Pearl River Delta，introduces the soft soil characteristics and mechanisms of soil liquefaction，analyzes the impacts of the earthquake and raise of undergroundwater on the sandy soil liquefaction，being aimed at the situations that the earthquake happens more frequently and the sea level continuously raises caused by the global warming in recent years，and offers the some forward － looking defensive countermeasures for the purpose of providing the reference basis for seismic reinforcement projects．
Research conclusions: In the past one hundred years，the sea level of the South China Sea raised by an annual average of 20mm，with the tendency of raising more and more year by year． As the prediction of the raise amplitude raise of the sea level is rather complicated，on consideration of the factors of the sea level raise in theory，the abnormal fluctuations of the sea level，the raise of the flood and tidewater and the topography change，it is predicted that the sea level along the Pearl River Delta region will raise to 22 ～33 cm by 2 030 and it will produce the raise of underground water in this area．
程鉴基. 珠江三角洲砂土液化特征与防御对策的研究[J]. 铁道工程学报, 2011, 28(11): 19-23.
CHENG Jian － ji. Study on Liquefaction Characteristics of Sandy Soil in the Pearl River Delta and Defensive Countermeasures. 铁道工程学报, 2011, 28(11): 19-23.
2011, Vol. 28 
版权所有 © 2014 《铁道工程学报》编辑部