Land subsidence due to groundwater withdrawal in the northern Beijing plain, China
Land subsidence due to groundwater withdrawal in the northern Beijing plain, China
复制标题
中国北京北部平原因地下水抽取导致地面沉降
DOI：
10.1016/j.enggeo.2015.04.020
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发表时间：
2015-07
影响因子：
7.4
通讯作者：
Pietro Teatini
中科院分区：
文献类型：
--
作者：
Rong Wang;Beibei Chen;Zhenxue Dai;Pietro Teatini
北京是一个国际大都市，水资源的过度开采使得地面沉降越来越严重。由于人口的大幅增长，未来几年相关问题无法避免。本研究的目的是量化北京平原北部地区2003年至2010年期间的地面沉降，掌握沉降过程的演变过程，并探讨其与触发因素的关系。收集了垂直多钻孔引伸计的深层压实数据、持续散射干涉测量和水准测量的地面沉降、地下水位、井筒水文地质环境和Landsat TM图像等各种数据，并有效地利用这些数据来探测地面沉降的时空特征及其与地下水位变化、可压缩层厚度和城市发展的可能关系。结果表明，2003年至2010年，地面沉降分布不均，且持续加剧。监测期间平均海拔下降92.5毫米，下降速度高达52毫米/年。由于最可压缩的细沉积物的厚度变化，沉降碗的分布仅部分与地下水凹陷锥的分布一致。事实上，引伸计显示粉质粘土层对地面沉降的贡献较大，102 至 117 m 深度之间 15 m 厚的粉质粘土层约占总沉降的 25%。最后，在沉降率和与令人印象深刻的城市发展相关的地表荷载增加之间没有观察到明显的相关性。这项研究代表了开发基于物理的沉降发生模型的第一步，该模型可用于规划北京北部平原的修复策略。
Beijing is an international metropolis, where over-exploration of water resource makes land subsidence becoming more and more serious. The related problems cannot be avoided in the coming years because of the giant increase of population. The aims of this study are to quantify land subsidence over the period 2003 to 2010, grasp the evolution of the process, and investigate the relation with the triggering factors in the northern area of the Beijing plain. Various data, including deep compaction from vertical multiple borehole extensometers, land subsidence from Persistent Scatterer Interferometry and leveling surveys, groundwater levels, hydrogeological setting from wellbores, and Landsat TM image were collected and effectively used to detect the spatial and temporal features of land subsidence and its possible relation with groundwater level changes, compressible layer thickness, and urban development. Results show that land subsidence is unevenly distributed and continuously increased from 2003 to 2010. The average loss of elevation over the monitoring period amounted to 92.5 mm, with rates up to 52 mm/y. The distribution of the subsidence bowl is only partially consistent with that of the groundwater depression cone because of the variable thickness of the most compressible fine deposits. In fact, extensometers reveal that silty-clay layers account for the larger contribution to land subsidence, with the 15 m thick silty-clay layer between 102 and 117 m depth accounting for about 25% of the total subsidence. Finally, no clear correlation has been observed between the subsidence rates and the increase of the load on the land surface connected to the impressive urban development. This study represents a first step toward the development of a physically-based model of the subsidence occurrence to be used for planning remediation strategies in the northern Beijing plain.
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影响因子：
7.4
作者：
Chih-Hsi Liu;Yii‐Wen Pan;J. Liao;Wei Nung Hung
通讯作者：
Chih-Hsi Liu;Yii‐Wen Pan;J. Liao;Wei Nung Hung
影响因子：
6.4
作者：
T. Burbey
通讯作者：
T. Burbey
DOI：
10.1109/tgrs.2002.803792
发表时间：
2002-11-01
影响因子：
8.2
作者：
Berardino, P;Fornaro, G;Sansosti, E
通讯作者：
Sansosti, E
影响因子：
8.2
作者：
Ferretti, A;Prati, C;Rocca, F
通讯作者：
Rocca, F
DOI：
10.1007/s00254-007-1123-x
发表时间：
2008-10
期刊：
Environmental Geology
影响因子：
--
作者：
Jichun Wu;Xiaoqing Shi;Yuqun Xue;Yun Zhang;Zixin Wei;Jun Yu
通讯作者：
Jichun Wu;Xiaoqing Shi;Yuqun Xue;Yun Zhang;Zixin Wei;Jun Yu