山西吉县黄土崩塌地质灾害的模式  

Geological Disaster Model of Loess Collapse in Ji County,Shanxi Province

作　　者：李雨株 李杰 Li Yuzhu;Li Jie(China Ordnance Industry Survey and Geotechnical Institute Co.,Ltd.,Beijing 100053,China;Beijing Urban Construction Design&Development Group Co.,Ltd.,Beijing 100038,China)

机构地区：[1]中兵勘察设计研究院有限公司,北京100053 [2]北京市勘察设计研究院有限公司,北京100038

出　　处：《岩土工程技术》2020年第4期196-200,共5页Geotechnical Engineering Technique

摘　　要：黄土崩塌是吉县的主要地质灾害,崩塌体从形成到发生,是一个局部蠕变—大部渐进性破坏—突变失稳的过程。对已发生的黄土崩塌地质灾害主控因素进行分析,可将其归纳为坡面饱和剥落型、冻融崩塌型、植物根劈崩塌型、节理切割崩塌型、危岩(土)体失稳崩塌型、坡体剪切破坏崩滑型等六个崩塌模式。通过对黄土崩塌地质灾害进行分析研究,探索其演变和发灾模式,对防灾减灾工作具有积极的参考意义。Loess collapse is the main geological disaster in Ji County,Shanxi Province.Collapse is a process of partially creep—mostly progressive failure—abrupt instability.Based on the analysis of the main controlling factors of the loess collapse,6 collapse models are summarized,including saturated slope spalling type,freezing-thawing collapse type,plant root splitting collapse type,joint cutting collapse type,unstable rock(soil)collapse type,slope shear failure collapse type.The analysis of the evolution and the disaster model of collapse has reference significance for disaster prevention and reduction.

关 键 词：黄土崩塌 饱和 抗剪力 失稳 

分 类 号：P642.21[天文地球—工程地质学]