摘要
1920年宁夏海原8.5级大地震时,在固原清水河四级黄土台原的马兰黄土中,发生了大范围的黄土低角度滑移,造成了严重的震害。1986年宁夏地震局在滑移区对滑移形态和地层构成及性质等进行了考察研究,得出结论认为滑移是由于马兰黄土中含砂层段地震液化上涌推挤两侧土层而造成的,本文介绍了考察研究的部分成果,并对有关的问题进行了讨论。
A large area of loess landslide with low slope occurred in the Malan loess(Q_3) of the 4th loess terrace of Qingshui River during the Ningxia Haiyuan earthquake(M_s=8.5) in 1920, which caused severe hazard. Morphological feature of slide and soil structure within the slide area were investigated by Ningxia Seismic Bureau in 1986. The conclusion attained was that the landslide was caused by the liquefaction of sandy layer of Malan loess(Q_3). Part of the research result is presented in this paper and relevant issues are also discussed.
出处
《工程勘察》
CSCD
北大核心
1990年第6期1-5,共5页
Geotechnical Investigation & Surveying
