珠江三角洲场地震害预测

场地震害是随空间和时间而变化的多因子影响的综合体。本文根据这一观点分析影响珠江三角洲场地震害的环境因子及岩土特征，探讨该区砂土液化、软土震陷、活动断裂、滑坡、崩塌、岩溶和孤立地形等场地震害，指出本区未来场地震害的主要形式是砂土液化和软土震陷，但也不可忽视活动断裂和水下场地震害，以及特殊地形地貌引致的共振、驻波破坏。

PREDICTION OF SITE EARTHQUAKE HAZARD IN THE PEARL RIVER DELTA AREA

Site earthquake hazard is a changing multiplicity according to place and time. Based on that, this article analyzes the environmental factors and the rock-soil characters influencing on the site earthquake hazard in the Pearl River Delta. It also discusses the hazard such as sand liquefaction, soft soil seismic depression, active fault, landslide, breakdown, karst and isolated topography. At the end of this paper, it points out that the main earthquake hazards occuring in this region in future are sand liquefaction and soft soil depression. However, the active fault, the earthquake hazard in water, and the destroy of the resonance and the stationary wave caused by special topography should not be overlooked.