陇东黄土塬区地裂缝灾害形成机理分析  

Formation mechanism of ground fissures in Longdong loess tableland

作　　者：张彦林[1] 李爱军[1] 付东林 

机构地区：[1]甘肃省地质调查院,甘肃兰州730000 [2]甘肃省地质环境监测院,甘肃兰州730050

出　　处：《中国地质灾害与防治学报》2010年第1期65-68,共4页The Chinese Journal of Geological Hazard and Control

基　　金：中国地质调查局县(市)地质灾害调查与区划项目(1212010640332)

摘　　要：对陇东黄土塬区地裂缝灾害的调查表明,在该区不断发生的地裂缝灾害实际上是在黄土构造节理的基础上,黄土潜蚀灾害的一种表现形式,是黄土塬区边缘一种特有的地质灾害现象,其形成除受黄土构造节理控制外,还受黄土本身的湿陷特性及塬面坡度、降水强度、地面硬化等条件制约。本文在灾害现状剖析的基础上,分析了黄土塬区地裂缝灾害的形成机理。Frequent ground fissures were a form of loess erosion hazard.They were formed on the loess structural joints.It was a special phenomenon of geological disaster in the loess tableland.Its formation was restricted by collapsible features,table-land slope degree,precipitation intensity and ground sclerosis conditions besides the loess structural joints.Formation mechanism of the disasters was analyzed based on their present status in this paper.

关 键 词：黄土塬 地裂缝 构造节理 湿陷特性 黄土潜蚀 陇东 

分 类 号：P642[天文地球—工程地质学]