摘要
地面沉降是珠江三角洲主要城市地质灾害之一,广州市尤为严重。在GIS技术和基础地理信息数据库的支持下,采用模糊数学层次分析法(AHP)和相应的指标体系对广州市地面沉降危险性进行了评价。广州市主城区地面沉降危险性可分为5个等级,极不稳定级主要分布在珠江沿岸和珠江环绕地区;不稳定级主要分布在北部和东北部部分地段;次不稳定级主要分布在西北角和西南角;基本稳定级分布零散,东部、西部均有所见;稳定级分布在北部和东部的外围地带。
Ground subsidence is one of the main urban geological disasters in the Pearl Delta.It is especially serious in Guangzhou City.An appraisement of ground subsidence fatalness in Guangzhou has been carried out with AHP supported by GIS and geographical information database.Ground subsidence fatalness is divided into five grades in the key area of Guangzhou.The most seriously unstable grade is along the Pearl River.The unstable grade is distributed in the north and northeast of the area.The less stable grade is located in the northwest and southwest corners.The basically stable grade lies in the west and east parts.And the most stable grade is in the east and north peripheral belts.
出处
《海洋地质动态》
2006年第1期1-4,共4页
Marine Geology Letters
基金
国家自然科学基金资助项目(49971010)
广东省自然科学基金资助项目(000531)
