大型变电站厂址的地震地质条件研究——四川省石棉地区变电站遴选实例

Research on the Seismogeological Condition for the Huge Transformer Substation——A Case Study in the Shimian Region, Sichuan Province

地震灾害对工程场地的影响主要体现在3个方面,一是地震断层直接造成地面的断错;二是强烈的地面地震动;三是地震引起的地质灾害如滑坡、泥石流或砂土液化等。本文结合在四川省石棉地区大型变电站厂址的遴选实例,说明详细研究厂址附近断层的活动习性及其空间分布位置是研究大型变电站厂址地震地质条件的关键性因素。

The seismogeological disaster can obviously affect the engineering site on three aspects： the first is ground faulting caused by the earthquake; the second is strong ground motion; the third is mountain disaster such as landslide, mud-stone flow and liquefaction. Through the case study-selection the huge transformer substation in the Shimian region, Sichuan Province, this paper proposes that active feature and spatial distribution of the fault are the crucial factors for evaluating the seismogeological conditions of the location of huge transformer substation.