摘要
采用SBAS-InSAR遥感技术开展水源区及高铁线路周边20 km×20 km区域的地面沉降监测,围绕监测井的长时序水位数据,分析水源区地下水位与地面沉降的关联关系,依据高铁运营沉降要求确定限采方案中地下水位控制阈值;在构建Visual Modflow水文地质数值模型基础上,以地下水位控制阈值为水位边界,正演数值分析限采方案中需要关闭的开采井位与减采量。
The SBAS-InSAR remote sensing technology is employed for monitoring land subsidence in a 20 km×20 km area around the water source region and high-speed railway line surrounding area.Long-term water level data from monitoring wells are analyzed to investigate the correlation between groundwater levels and land subsidence in the water source area.Based on the subsidence requirements for highspeed railway operation,threshold values for groundwater level control in extraction control scheme are determined.A Visual Modeflow hydrogeological numerical model is constructed,and using the determined groundwater level control threshold as the water level boundary,the forward numerical simulation is conducted to identify the extraction wells that need to be closed and the corresponding extraction reduction amounts in the subsidence control scheme.
作者
王其合
张鹏
李程
边云云
WANG Qihe;ZHANG Peng;LI Cheng;BIAN Yunyun(China Railway Shanghai Design Institute Group Co.,Ltd.,200070,Shanghai,China;不详)
出处
《城市轨道交通研究》
北大核心
2023年第S02期92-99,共8页
Urban Mass Transit
关键词
地面沉降
地下水
高铁线路
轨道平顺性
land subsidence
groundwater
high-speed railway
rail regularity
