摘要
彭阳县是黄土地区滑坡灾害最为发育的县(市)之一,严重威胁当地群众生命财产安全,阻碍社会、经济发展。本文基于彭阳县地质灾害详细调查资料。首先,对黄土滑坡从规模、形成时代、滑体厚度等方面进行分类统计,结合遥感解译结果和实地调查资料,总结其分布规律;其次,从地形地貌、地层岩性、大气降水、地下水、地表水、人类工程活动的影响等方面分析黄土滑坡的形成条件;最后,采用GEO-SLOPE软件对黄土滑坡与各主要影响因素的关系进行了数值模拟。在此基础上,探讨了彭阳县黄土滑坡的形成机理。
Pengyang country is the most serious country that bears landslide hazards in loess areas. These hazards have a serious threat to life and property of local people and hinder social and economic development. Based on detailed field data from geological disasters surveys in Pengyang country, firstly, a classified statistic of loess landslides are made by size, formation age, thickness of sliding mass and other aspects, then the distribution rules of loess landslides is analyzed, combining with remote sensing interpretation and field survey results; Secondly, topography, lithology, rainfall, groundwater, surface water and human engineering activity that influence loess landslides are analyzed; Finally, the relationship between loess landslides and main factors are simulated by GEO-SLOPE software. Based on all above, the formulation mechanism of loess landslides in Pengyang country is discussed.
出处
《中国地质灾害与防治学报》
CSCD
2011年第2期26-33,共8页
The Chinese Journal of Geological Hazard and Control
基金
国家自然科学基金重点项目-气候变化及工程影响下青藏高原多年冻土区热融灾害评估(41030741)
关键词
黄土滑坡
形成机理
数值模拟
彭阳县
loess landslides
formation mechanism
numerical simulation
Pengyang country
