盐池县地质灾害遥感调查及空间分布特征

发布时间：2018-04-23 20:05

本文选题：地质灾害 + 遥感解译　；参考：《水文地质工程地质》2017年01期

【摘要】：宁夏盐池县地处黄土高原区,地质灾害较为频繁。以SPOT6、Rapid Eye、无人机以及Land Sat8 OLI等多源遥感数据为基础,通过研究遥感影像特征,建立地质灾害解译标志,共解译出滑坡125处、崩塌84处、泥石流19处、地面塌陷区3处。结合区域地理地质环境特征,总结了研究区地质灾害点的基本特征,并利用GIS技术对灾害点进行点密度分析,在此基础上划分了7个集中分布区,归纳了盐池县地质灾害点的空间分布特征及规律;同时,对研究区地层构造、植被、地形等因素与地质灾害点空间分布特征的相关性进行了讨论。研究结果表明:盐池县地质灾害点具有规模小,灾害轻;点密度整体南高北低,且南部聚集、北部分散;地层、植被、坡度、坡向等因素与地质灾害有着密切的联系。
[Abstract]:Ningxia Yanchi county is located in the Loess Plateau area, with more frequent geological disasters. Based on SPOT6, Rapid Eye, unmanned aerial vehicle and Land Sat8 OLI and other multi-source remote sensing data, the geological hazard interpretation marks are established by studying the features of remote sensing images, and 125 landslides, 84 landslides, 19 debris flows and 3 ground subsidence areas are interpreted. The basic characteristics of the geological hazard point in the study area are summarized, and the point density analysis of the disaster points is carried out by GIS technology. On this basis, 7 concentrated distribution areas are divided and the spatial distribution characteristics and laws of the geological disaster points in Yanchi County are summed up. At the same time, the stratigraphic structure, vegetation, topography and other factors of the study area and the geological disaster point space are also given. The research results show that the geological disaster points in Yanchi County are small in scale and light in disaster; the point density as a whole is low in the South and in the south, and in the south, and in the north is scattered, and the strata, vegetation, slope, slope and other factors are closely related to the geological disasters.

【作者单位】：中国地质大学(北京)信息工程学院;宁夏回族自治区地质调查院;
【基金】：宁夏回族自治区国土资源厅“宁夏盐池县地质灾害详细调查项目”(XC(2012)-05)
【分类号】：TP79;P694

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