雷達(dá)差分干涉測量技術(shù)反演含水層物理量
發(fā)布時(shí)間：2018-10-31 09:23
【摘要】：地下水的過度開采易引起嚴(yán)重的地面沉降,如何建立地下水開采量與地面沉降量之間有效的函數(shù)關(guān)系已成為目前研究的熱點(diǎn)和難點(diǎn)。該文以華北平原天津區(qū)域?yàn)檠芯繉ο?采用短基線集時(shí)序分析技術(shù),使用歐空局Envisat-ASAR數(shù)據(jù),提取了變形時(shí)間序列。同時(shí),基于滲流微分方程與含水層壓縮土力學(xué)模型,通過融合InSAR監(jiān)測結(jié)果與地下水位數(shù)據(jù)反演了地下水-地面沉降模型中的彈性、非彈性釋水系數(shù),并分析了地面沉降特征與地下水開采量發(fā)育情況。該研究提高了地下水-地面沉降預(yù)測模型在華北平原天津區(qū)域的實(shí)用性與預(yù)測精度,為今后天津市開展地下水開采控制、建立地下水可持續(xù)開采模型提供了基礎(chǔ)。
[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.
【作者單位】： 遼寧工程技術(shù)大學(xué)測繪與地理科學(xué)學(xué)院;武漢大學(xué)GNSS中心;中國科學(xué)院新疆生態(tài)與地理研究所;
【基金】：遼寧省“百千人才工程”人選資助項(xiàng)目(20100921099) 遼寧省教育廳重點(diǎn)實(shí)驗(yàn)室項(xiàng)目(LJZS001)
【分類號】：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.
【作者單位】： 遼寧工程技術(shù)大學(xué)測繪與地理科學(xué)學(xué)院;武漢大學(xué)GNSS中心;中國科學(xué)院新疆生態(tài)與地理研究所;
【基金】：遼寧省“百千人才工程”人選資助項(xiàng)目(20100921099) 遼寧省教育廳重點(diǎn)實(shí)驗(yàn)室項(xiàng)目(LJZS001)
【分類號】：TN958
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