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2003年2月24日新疆巴楚-伽师地区发生6.8级地震,出现了唐山、海城地震后近30年我国最具规模的砂土液化现象。本文通过现场调查和资料分析,并与以往大地震液化比较,提出了此次地震液化宏观现象的认识,包括液化分布特征、喷水冒砂形态、液化震害和工程地质条件等几个方面。结果表明,此次地震液化宏观现象与我国以往几次大地震有很多不同,具有很大的研究价值。
On February 24, 2003, a 6.8-magnitude earthquake hit Bachu-Jiashi area in Xinjiang. The largest sand liquefaction occurred in Tangshan and Haicheng nearly 30 years after the earthquake in Tangshan and Haicheng. Based on the field investigation and data analysis, and compared with the liquefaction of previous large earthquakes, this article proposed the understanding of the macroscopic phenomenon of liquefaction, including the distribution characteristics of liquefaction, the shape of jet sand, liquefaction damage and engineering geological conditions. The results show that the macro-liquefaction phenomenon of the earthquake is quite different from several large earthquakes in our country and has great research value.