摘要
为了评价地面沉降对高铁建设的影响,本文采用遥感SBAS-InSAR技术,对新建淮北至宿州至蚌埠高铁穿越宿州市城西水源地区段进行地面沉降分析与分区评价。首先调查研究宿州西水源地段的水文地质特征与地面沉降历史发展规律;在采集2017年6月至2020年7月共计38景Sentinel-1A卫星数据的基础上,采用SBAS-InSAR技术开展分析区地面沉降SAR数据解算,并依据水源地关键水位观测井的实测数据验证SBAS-InSAR解算成果的可靠性;最后采用ArcGIS软件获取高铁里程沿线地面沉降速率分布状况,并依据沉降速率标准对淮宿蚌高铁穿越宿州西段的地面沉降影响程度划分区段。上述研究为淮宿蚌城际铁路宿州西水源地沉降区域的地质选线、设计、施工、运营、监测提供了科学依据。
In this paper,InSAR technology is used to analyze and evaluate the land subsidence of the section of newly-built Huaibei Suzhou Bengbu high speed railway passing through the water source area in the west of Suzhou City.Firstly,the hydrogeological characteristics and the historical developing of land subsidence in the west water source area of Suzhou are investigated.Based on 38 sentinel-1A SAR images collected from June 2017 to July 2020,SBAS-InSAR technology is used to calculate the land subsidence in the analysis area,and the reliability of SBAS-InSAR results is verified according to the measured data of key water level observation wells.Then,ArcGIS software is used to obtain the distribution of land subsidence rate along the high-speed railway mileage,and according to the subsidence rate standard,the land subsidence influence degree of Huai-Su-Beng high-speed railway crossing the west section of Suzhou is divided into graded sections.The above research provides a scientific basis for the route selection,design,construction and operation of Suzhou west section of Huaisu Bengbu intercity railway.
作者
刘晓波
Liu Xiaobo(China Railway Shanghai Design Institute Group Co.,Ltd.,Shanghai 200040,China)
出处
《工程勘察》
2022年第7期61-65,共5页
Geotechnical Investigation & Surveying
基金
中铁上海设计院集团有限公司(集20-23).
