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白龙江流域甘肃段地质灾害特征
引用本文:全永庆,贾贵义.白龙江流域甘肃段地质灾害特征[J].地质学刊,2014,38(4):676-681.
作者姓名:全永庆  贾贵义
作者单位:兰州大学土木工程与力学学院地质工程系
基金项目:中国地质调查局国土资源大调查项目“甘肃省白龙江流域主要城镇环境工程地质勘查”(1212011089083)
摘    要:根据1∶5万地质灾害详查资料,利用GIS技术,统计分析了白龙江流域甘肃段地质灾害的分布规律和发育特征,同时分析了其分布与地形地貌、地层岩性、地质构造和人类活动等因素的关系。结果表明:地质灾害主要沿河流和道路呈线状分布,受坡度、河流、构造断层、地层岩性和土地利用类型等因子的综合控制作用较大,随着坡度、距河流和断层距离的增大,地质灾害数量和密度大体呈减小趋势,人类活动显著影响着地质灾害的发育程度。

关 键 词:地质灾害  分布规律  GIS  白龙江流域  甘肃
收稿时间:3/5/2014 12:00:00 AM
修稿时间:2014/4/10 0:00:00

Characteristics of Geo-hazards at Gansu Segment in Bailongjiang River Basin
QUAN Yong-qing.Characteristics of Geo-hazards at Gansu Segment in Bailongjiang River Basin[J].Jiangsu Geology,2014,38(4):676-681.
Authors:QUAN Yong-qing
Institution:QUAN Yong-qing,JIA Gui-yi(1.Geological Engineering Department, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China ; 2 Gansu Institute of Geological Environment Monitoring, Lanzhou 730050, China)
Abstract:According to 1∶ 50,000 detailed geological disasters investigation information,the authors analyzed the characteristics and distribution regularities of geological disasters by GIS technology and analyzed the relationship among the geological disasters and the influence factors including landform,stratum lithology,geological structure,human activity etc. The results showed that the geological disasters were mainly distributed along with rivers and roads,and influenced by slope gradient,rivers,faults,stratum lithology and land use types in a large extent,and with the increasing of slope gradient,the distance to the rivers and faults,the numbers and density of geological disasters showed a decreasing trend,especially human activity significantly affected the growth degree of the geological disasters.
Keywords:Geological disasters  Distribution regularities  GIS  Bailongjiang River reaches  Gansu
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