陕南秦巴山区地质灾害发育及空间分布规律  

Development and Spatial Distribution of Geological Disasters in Qinling-Daba Mountains of South Shaanxi

作　　者：强菲[1] 赵法锁[1] 段钊[2] 

机构地区：[1]长安大学地质工程与测绘学院,陕西西安710054 [2]西安科技大学,陕西西安710054

出　　处：《灾害学》2015年第2期193-198,共6页Journal of Catastrophology

基　　金：陕西省科技计划项目-社会发展公关计划(s2012s F3082);西安科技大学科研培育基金(201309)

摘　　要：为进一步研究陕南秦巴山区地质灾害发育及空间分布规律,对区内地质灾害的数量、规模、物质组成等进行概率统计分析,结果显示:该区地质灾害以堆积层滑坡为主,岩质崩塌次之;滑坡规模以小型、浅层和等长式为主,崩塌以小型、等长式为主。地质灾害空间点密度呈"四高两低"分布,崩塌呈"三高四低"分布,泥石流呈"三高两低"分布。地质灾害、断裂、河流及道路的空间分布具有分形特征。滑坡(崩塌)面积与体积(长、宽)之间具有幂律相依性,面积与体积符合对数正态分布。结论为陕南秦巴山区移民搬迁安置选址提供技术支持。To further study the development and spatial distribution regularities of geological hazards in Qinling-Daba Mountains of south Shaanxi,probability statistics analysis on quantity,scale,material composition,etc of the geological disasters in the region is done.Results show that the major types of the hazards are accumulated layer landslides while rock collapses secondary.Landslides are mainly small shallow and isometric ones while collapses small and isometric ones.Spatial dot densities of the geological hazards have ＂four high two low＂distribution,while collapses ＂three high four low＂and debris flows ＂three high two low＂.The special distribution of hazards,faults,rivers and roads have fractal characteristics.There are power-law correlations between areas and volumes（lengths,widths） of the landslides（collapses）,and the areas and volumes are of logarithmic normal distributions.The results provide technical support for the selection of relocation sites for immigrants in this region.

关 键 词：陕南 秦巴山区 地质灾害 发育 空间分布 

分 类 号：P642.22[天文地球—工程地质学] X43[天文地球—地质矿产勘探]