Control Effect of Evolution Process of the Yellow River Terrace in Lanzhou on Landslide Activity
Zhang Zelin
Wu Shuren
Tang Huiming
Li Zhiheng
Zhao Cheng
Zhang Yongjun
Wang Tao
Abstract：In order to explore the relationship between the geological settings and the development of the slides,and mechanisms of landslides induced by evolution of the Yellow River terrace in Lanzhou,the development phase characters of the Yellow River valley evolution in Lanzhou,control effect of the valley evolution to landslides and landslide formation model are studied in this paper based on extensive analysis of regional engineering geology data,combined with Quaternary geomorphology and engineer-ing geology.It is found that:(1)the control effect of landslides in Lanzhou induced by the Yellow River valley evolution shows phase in time and zonation in space.The landslides have different development modes and formation mechanisms in different phases of river valley evolution.(2)The major inducing factors of terrace landslides are intense neotectonics uplifting,strong incision of the Yellow River and relative moisture paleoclimate during the terraces formed.The weak intercalated layers formed in Tertiary mud-stone stratum may induce large scale loess-mudstone landslides while it may develop small-middle scale landslides and collapses in the loess layer.The landslides may lead to the deficiency of partial terraces during the river valley evolution.
Keywords：the Yellow River terraceterrace evolutionlandslidecontrol effectlandslide formation and mechanismslope stabilityengineering geology
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：13( 1585-1597 )