湖南省桂东县花岗岩地区滑坡特征及成因分析  

Hunan Province Guidong County Analysis of the Characteristics and Causes of Landslides in Granite Areas

作　　者：杜成江 罗永明 丁磊 DU Chengjiang;LUO Yongming;DING Lei(Hunan Provincial Ecological Geological Survey and Monitoring Institute,Changsha Hunan 410004)

机构地区：[1]湖南省生态地质调查监测所,湖南长沙410004

出　　处：《中国科技纵横》2024年第7期101-103,共3页China Science & Technology Overview

摘　　要：桂东县花岗岩分布广泛,占全县总面积的57.77%。花岗岩风化壳工程性质特殊,表层土体透水性好,土体遇水易软化,岩土体抗剪强度迅速降低,桂东县花岗岩地区多为地质灾害的易发、频发区。本文通过对桂东县花岗岩地区滑坡的调查、统计与分析,分析桂东县花岗岩风化层滑坡的特点和形成条件,为该地区的防灾减灾和各类工程建设提供参考。Granite is widely distributed in Guidong County,accounting for 57.77%of the total area of the county,the engineering properties of granite weathering crust are special,the surface soil has good water permeability,soil softens easily when exposed to water,the shear strength of rock and soil rapidly decreases,Therefore granite areas in Guidong County are prone to geological disasters.Based on the investigation,statistics and analysis of landslide in granite area of Guidong County,the characteristics and formation conditions of granite regolith landslide in Guidong County are revealed,it provides scientific basis for disaster prevention and reduction and human engineering construction in this area.

关 键 词：花岗岩风化层 滑坡特征 形成条件 

分 类 号：P642.22[天文地球—工程地质学]