工程地质学报2017，Vol.25Issue(1)：147-153,7.DOI:10.13544/j.cnki.jeg.2017.01.020
地下水诱发渐进后退式黄土滑坡成因机理研究——以甘肃黑方台灌溉型黄土滑坡为例
MECHANISM OF GRADUAL RETREAT LOESS LANDSLIDE CAUSED BY GROUNDWATER: A CASE STUDY OF THE IRRIGATION LOESS LANDSLIDE IN HEIFANGTAI, GANSU PROVINCE
摘要
Abstract
Heifangtai is located in Yongjing County,Gansu province.The loess landslide is very developed due to irrigation.One of the most typical landslides is the gradual retreat of the loess landslide caused by long-term irrigation.This paper compares the Google images and the field survey of representative landslide occurred in recent years.It shows that the loess landslides have the characteristics of gradual recession.It further investigates and analyze the water content of the loess landslide profile.It finds that the main reason for loess landslide occurred continuously are soft base effect formed by long-term soaking of groundwater.The arc groove of the landslide often becomes the concentration of groundwater and drainage points.The residual landslide accumulation in slide source area rises the local underground water.It is the main reason to make the same position more and more gradual retreat type landslide.关键词
黄土滑坡/渐进后退式/软基效应/地下水局部雍高Key words
Loess landslide/Gradual retreat/Soft foundation effect/Local enrichment of groundwater分类
天文与地球科学引用本文复制引用
亓星,许强,彭大雷,董秀军,陶叶青..地下水诱发渐进后退式黄土滑坡成因机理研究——以甘肃黑方台灌溉型黄土滑坡为例[J].工程地质学报,2017,25(1):147-153,7.基金项目
国家自然科学基金重点项目(41630640),国家重点基础研究发展计划(2014CB744703),国家杰出青年科学基金(41225011)资助. （41630640）
