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近几年我国由于暴雨所造成的灾害呈现多发的趋势,城市作为某个地区的经济政治和文化中心具有人口密集性!资源集中性的特点,一旦暴雨造成的城市内涝,轻则会导致城市各项生产工作、人们日常的生活无法正常进行,重则会造成严重的经济损失甚至会给人们的生命安全造成巨大的威胁。地质灾害危险性评价与制图是有效减缓区域地质灾害风险的一项工作。随着遥感技术的迅速发展,利用遥感影像数据解译已在水资源、自然灾害、土地覆被等方面都得到应用。应用RS、GIS技术对遥感影像数据进行辐射定标、大气校正、镶嵌、裁剪等预处理。参考研究区地质图、矿产地质数据库等地学数据,结合ENVI5.1遥感图像处理软件进行该地区的地质灾害解译,为以后的工作提供基础性参考。
In recent years, the disasters caused by heavy rains in our country are prone to multiple occurrences. As an economic, political and cultural center of a certain area, cities are densely populated and resource concentrated. Once the urban waterlogging caused by rainstorms, In terms of production work, people’s daily life can not be normalized, causing serious economic losses and even posing a huge threat to people’s lives and safety. Geological hazard assessment and mapping is an effective mitigation of the risk of regional geological disasters. With the rapid development of remote sensing technology, the use of remote sensing image data interpretation has been applied in water resources, natural disasters and land cover. Application of RS, GIS technology for remote sensing image data radiation calibration, atmospheric correction, mosaic, cutting and other pretreatment. Reference to the study area geological map, mineral geological database and other geological data, combined with ENVI5.1 remote sensing image processing software for geological disasters in the region interpretation, provide a basic reference for future work.