| 利用GRACE数据进行京津冀地区地面沉降与地下水耦合分析 |
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| 引用本文： | 张玉鹏,张永红,刘青豪.利用GRACE数据进行京津冀地区地面沉降与地下水耦合分析[J].测绘通报,2022,0(5):89-94+125. |
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| 作者姓名： | 张玉鹏 张永红 刘青豪 |
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| 作者单位： | 1. 辽宁工程技术大学, 辽宁 阜新 123000;2. 中国测绘科学研究院, 北京 100830;3. 中南大学, 湖南 长沙 410000 |
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| 基金项目： | 国家自然科学基金(41874014)； |
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| 摘 要： | 地下水的过量开采已导致京津冀地区出现严重的地面沉降,为了分析地下水与地面沉降之间的耦合关系,首先利用GRACE-FO数据与GLDAS数据反演出京津冀地区2016—2019年地下水变化时序;然后利用MCTSB-InSAR技术反演出该地区同时段的沉降变化时序。通过试验分别获取地下水与地面沉降的差分变化序列和变化趋势线,并引入非弹性存储系数分析地下水对地面沉降影响力的变化规律。结果表明:①当地下水迅速升高或降低时,地面沉降速率减小或增大;当地下水持续升高时,地面沉降接近停止。②沉降越严重的区域,地下水与地面沉降变化趋势的相关性越强。③由地下水变化引起沉降的能力,随沉降等级升高而变大,且该能力在不同沉降等级中随时间变化的趋势也不同。
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| 关 键 词： | GRACE 地下水 地面沉降 InSAR 耦合关系 |
| 收稿时间： | 2021-07-06 |
Coupling relationship between land subsidence and groundwater in Beijing-Tianjin-Hebei region based on GRACE data |
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| ZHANG Yupeng,ZHANG Yonghong,LIU Qinghao.Coupling relationship between land subsidence and groundwater in Beijing-Tianjin-Hebei region based on GRACE data[J].Bulletin of Surveying and Mapping,2022,0(5):89-94+125. |
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| Authors: | ZHANG Yupeng ZHANG Yonghong LIU Qinghao |
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| Affiliation: | 1. Liaoning University of Engineering and Technology, Fuxin 123000, China;2. Academy of Surveying and Mapping, Beijing 100830, China;3. Central South University, Changsha 410000, China |
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| Abstract: | The excessive exploitation of groundwater has caused serious ground subsidence in Beijing, Tianjin and Hebei. In order to analyze the coupling relationship between groundwater and ground subsidence, firstly, the groundwater change sequence in Beijing-Tianjin-Hebei region from 2016 to 2019 is performed by using GRACE-FO data and GLDAS data; Then the time series of the subsidence change in the same period of the region is performed by using the technology of MCTSB-InSAR. In the experiment part, the differential change sequence and trend line of ground water and ground settlement are obtained respectively, and the influence of groundwater on ground settlement is analyzed by using inelastic storage coefficient. The results show that:①when the groundwater reserves increase or decrease rapidly, the ground subsidence rate decreases or increases. When the groundwater continues to rise, the ground subsidence is close to stop.②The more serious the settlement, the stronger the correlation between groundwater and ground subsidence.③The capacity of settlement caused by groundwater change increases with the increase of settlement level, and the change trend of the capacity with time is also different in different settlement grades. |
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| Keywords: | GRACE groundwater land subsidence InSAR coupling relationship |
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