Long-term groundwater level changes and land subsidence in Tianjin, China

被引：24

作者：

Ha, Da ^{[1
,2
,3
]}

Zheng, Gang ^{[1
,2
,4
]}

Loaiciga, Hugo A. ^{[3
]}

Guo, Wei ^{[1
,2
,4
]}

Zhou, Haizuo ^{[1
,2
,4
]}

Chai, Jinchun ^{[5
]}

机构：

[1] Tianjin Univ, Sch Civil Engn, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Key Lab Coast Civil Struct Safety, Minist Educ, Tianjin 300072, Peoples R China

[3] Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA 93106 USA

[4] Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300072, Peoples R China

[5] Saga Univ, Grad Sch Sci & Technol, Saga 8408502, Japan

来源：

ACTA GEOTECHNICA | 2021年 / 16卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Groundwater level; Land subsidence; Overdraft; Tianjin; WITHDRAWAL; DISPLACEMENTS; VARIABILITY; PREDICTION; DEPLETION; GRAVITY;

D O I：

10.1007/s11440-020-01097-2

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

A large volume of groundwater is withdrawn annually in Tianjin Municipality, China, to meet agricultural, industrial, and municipal water uses. Groundwater overdraft in the urban districts and the Binhai New District in Tianjin Municipality has caused land subsidence. A series of field observation wells were installed to monitor the long-term groundwater level (GWL). The hydrostratigraphy of the aquifer system underlying Tianjin consists of four aquifer layers. The middle two aquifer layers are the main layers for groundwater withdrawal. The GWL of the top two aquifer layers responded rapidly to recharge from precipitation and seawater intrusion. The GWLs of the bottom two aquifer layers have been dropping steadily over the past 50 years. The aquifer sediments underlying Tianjin Municipality consist mainly of fine sand, silt, and clayey soil. The decline of the GWL has induced substantial land subsidence and led to overconsolidated compressible sediments.

引用

页码：1303 / 1314

页数：12

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