雷达差分干涉测量技术反演含水层物理量
发布时间：2018-10-31 09:23
【摘要】：地下水的过度开采易引起严重的地面沉降,如何建立地下水开采量与地面沉降量之间有效的函数关系已成为目前研究的热点和难点。该文以华北平原天津区域为研究对象,采用短基线集时序分析技术,使用欧空局Envisat-ASAR数据,提取了变形时间序列。同时,基于渗流微分方程与含水层压缩土力学模型,通过融合InSAR监测结果与地下水位数据反演了地下水-地面沉降模型中的弹性、非弹性释水系数,并分析了地面沉降特征与地下水开采量发育情况。该研究提高了地下水-地面沉降预测模型在华北平原天津区域的实用性与预测精度,为今后天津市开展地下水开采控制、建立地下水可持续开采模型提供了基础。
[Abstract]:Overexploitation of groundwater can lead to serious ground subsidence. How to establish an effective functional relationship between groundwater exploitation and ground subsidence has become a hot and difficult point. Taking the Tianjin region of North China Plain as the research object, the deformed time series was extracted by using the short baseline set time series analysis technique and the Envisat-ASAR data of ESA. At the same time, based on the seepage differential equation and the aquifer compression soil mechanics model, the elastic and inelastic water release coefficients in the groundwater-land subsidence model are retrieved by combining the InSAR monitoring results with the groundwater level data. The characteristics of land subsidence and the development of groundwater exploitation are also analyzed. The research improves the practicability and prediction accuracy of groundwater-land subsidence prediction model in Tianjin area of North China Plain, and provides the basis for developing groundwater exploitation control and establishing groundwater sustainable exploitation model in Tianjin in the future.
【作者单位】： 辽宁工程技术大学测绘与地理科学学院;武汉大学GNSS中心;中国科学院新疆生态与地理研究所;
【基金】：辽宁省“百千人才工程”人选资助项目(20100921099) 辽宁省教育厅重点实验室项目(LJZS001)
【分类号】：TN958
[Abstract]:Overexploitation of groundwater can lead to serious ground subsidence. How to establish an effective functional relationship between groundwater exploitation and ground subsidence has become a hot and difficult point. Taking the Tianjin region of North China Plain as the research object, the deformed time series was extracted by using the short baseline set time series analysis technique and the Envisat-ASAR data of ESA. At the same time, based on the seepage differential equation and the aquifer compression soil mechanics model, the elastic and inelastic water release coefficients in the groundwater-land subsidence model are retrieved by combining the InSAR monitoring results with the groundwater level data. The characteristics of land subsidence and the development of groundwater exploitation are also analyzed. The research improves the practicability and prediction accuracy of groundwater-land subsidence prediction model in Tianjin area of North China Plain, and provides the basis for developing groundwater exploitation control and establishing groundwater sustainable exploitation model in Tianjin in the future.
【作者单位】： 辽宁工程技术大学测绘与地理科学学院;武汉大学GNSS中心;中国科学院新疆生态与地理研究所;
【基金】：辽宁省“百千人才工程”人选资助项目(20100921099) 辽宁省教育厅重点实验室项目(LJZS001)
【分类号】：TN958
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