摘要
岩溶塌陷是广西重要的地质灾害现象,对环境和人民的生命财产危害极大。本文借助于GIS技术分析研究岩溶塌陷的时空分布特征。首先,分析了来宾市塌陷区的形成条件因素,塌陷形态特征;其次,利用ArcGIS空间分析功能分别做断层、塌陷坑缓冲区,分析断层、地裂缝与岩溶塌陷坑的分布规律特征,并就这些空间分布特征分析受断层影响分布的塌陷坑发生条件、塌陷坑和地裂缝的关系;最后,分析塌陷坑、地裂缝变量随降雨量控制的时间延续性特征,实现对研究区岩溶塌陷的时空分布特征的可视化表达。实验证明,该方法是GIS技术在岩溶塌陷时空分布特征研究中的有益尝试,为后续塌陷灾情评估提供了辅助性参考。
Karst collapse is an important geological disaster phenomenon in Guangxi .it is a great harm to the environment and people＇s life and property .In this paper, we analysis of spatial and temporal distribution characteristics in study area .First of all, this paper analyses the forming conditions and factors of subsidence in Laibin , and morphological characteristics of collapse .Then we make buff-er analysis of sinkhole and fault by spatial analysis functions of ArcGIS .Respectively , we analysis the distribution characteristics of faults,fracture and karst collapse pit and accordingly to explore the relationship between them .In the final, we analysis the sinkhole , ground fissures form variable in time continuity characteristics with the control of rainfall , and realize visual expression of spatial and temporal distribution of karst collapse in the study area .Experiments show that the method is a meaningful attempt of GIS application in the study of spatial and temporal distribution in karst collapse , and provides a supporting reference for subsequent subsidence disas -ter assessment .
出处
《测绘与空间地理信息》
2014年第4期3-7,共5页
Geomatics & Spatial Information Technology
基金
国家自然科学基金项目(41162011)资助
关键词
岩溶塌陷
时空分布
缓冲区
断层
地裂缝
ARCGIS
karst collapse
spatial and temporal distribution
buffer
fault
ground crack
ArcGIS
