摘要
米林机场拟建场地位于藏东南地区雅鲁藏布江深切谷地内T1和T2阶地上,为II类建筑场地,地震基本烈度为8度.根据地震地质灾害发生的重复性特征,未来米林机场建设场地不排除再次发生砂土液化破坏的可能.砂土颗粒级配分析以及土层剪切波速测试结果也支持这一结果.考虑到场地周围地下水埋藏特点,判断该场地砂土液化深度不会太深,主要发生部位应该在雅鲁藏布江一级阶地及其相当地貌部位.
The constructive Site of Milin Airport is located at the 1^(st) and 2^(nd) terraces of Yaluzangbu (Brahmaputra) River, Southeastern Tibet, where the seismic basic intensity is eight degree. In this paper, we interpretation that there maybe occurred sand liquefaction around the site in the future Based on the re-occurred characteristic of seismogeological hazard, as well as the analysis of sandy-grain distribution and velocity of shear wave of soil layers. And the point of sand liquefaction may locate at the 1^(st) terrace.
出处
《地球物理学进展》
CSCD
2004年第3期703-708,共6页
Progress in Geophysics
关键词
西藏
米林机场
地震
砂土液化
Tibet, Milin airport, earthquake, sand liquefaction
