测绘与空间地理信息
測繪與空間地理信息
측회여공간지리신식
GEOMATICS & SPATIAL INFORMATION TECHNOLOGY
2014年
4期
3-7
,共5页
周国清%陈昆华%何素楠%岳涛
週國清%陳昆華%何素楠%嶽濤
주국청%진곤화%하소남%악도
岩溶塌陷%时空分布%缓冲区%断层%地裂缝%ArcGIS
巖溶塌陷%時空分佈%緩遲區%斷層%地裂縫%ArcGIS
암용탑함%시공분포%완충구%단층%지렬봉%ArcGIS
karst collapse%spatial and temporal distribution%buffer%fault%ground crack%ArcGIS
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。
巖溶塌陷是廣西重要的地質災害現象,對環境和人民的生命財產危害極大。本文藉助于GIS技術分析研究巖溶塌陷的時空分佈特徵。首先,分析瞭來賓市塌陷區的形成條件因素,塌陷形態特徵;其次,利用ArcGIS空間分析功能分彆做斷層、塌陷坑緩遲區,分析斷層、地裂縫與巖溶塌陷坑的分佈規律特徵,併就這些空間分佈特徵分析受斷層影響分佈的塌陷坑髮生條件、塌陷坑和地裂縫的關繫;最後,分析塌陷坑、地裂縫變量隨降雨量控製的時間延續性特徵,實現對研究區巖溶塌陷的時空分佈特徵的可視化錶達。實驗證明,該方法是GIS技術在巖溶塌陷時空分佈特徵研究中的有益嘗試,為後續塌陷災情評估提供瞭輔助性參攷。
암용탑함시엄서중요적지질재해현상,대배경화인민적생명재산위해겁대。본문차조우GIS기술분석연구암용탑함적시공분포특정。수선,분석료래빈시탑함구적형성조건인소,탑함형태특정;기차,이용ArcGIS공간분석공능분별주단층、탑함갱완충구,분석단층、지렬봉여암용탑함갱적분포규률특정,병취저사공간분포특정분석수단층영향분포적탑함갱발생조건、탑함갱화지렬봉적관계;최후,분석탑함갱、지렬봉변량수강우량공제적시간연속성특정,실현대연구구암용탑함적시공분포특정적가시화표체。실험증명,해방법시GIS기술재암용탑함시공분포특정연구중적유익상시,위후속탑함재정평고제공료보조성삼고。
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 .