Evaluation of environmental engineering geology issues caused by rising groundwater levels in Xi'an, China

Yao，Yingying1; Zhang，Maosheng2; Deng，Yukun1; Dong，Ying3,4; Wu，Xinshuang1; Kuang，Xingxing5

2021-12-05

10.1016/j.enggeo.2021.106350

ENGINEERING GEOLOGY   影响因子和分区

0013-7952

Groundwater levels (GWLs) are closely linked to environmental engineering geological issues in urban areas. With urban pumping control and the increase in groundwater recharge associated with global warming, rising GWLs can lead to hazards, such as seepage and sand liquefaction, which threaten the foundation of engineering infrastructure and adversely affect the lives of urban residents. However, urban engineering geological issues caused by rising groundwater are yet to be comprehensively quantified. In this study, we investigated spatial groundwater variation and the extent of seepage, sand liquefaction, and loess hydro-compaction using empirical equations, statistical analysis, and a numerical groundwater model for the most populous city in northwest China, Xi'an. Our results show that the overall GWL declined significantly before 2002 and gradually increased from 2003. The spatial trend in the GWL was determined to be highly heterogeneous. The maximum potential areas of seepage, sand liquefaction, and loess hydro-compaction accounted for 38%, 8%, and 11% of the total area, respectively. The effects of increasing areal recharge were smaller than the effects of decreasing the pumping rate for the expanding area of sand liquefaction and loess hydro-compaction, based on model projections. Our study provides an evaluation framework and useful insights into the protection of urban groundwater systems.

Groundwater pumping Loess hydro-compaction Sand liquefaction Seepage Xi'an City

SCI ; EI

英语

其他

WOS:000696835400009

20213610868549

Compaction ; Geology ; Global warming ; Recharging (underground waters) ; Sediments ; Seepage

Atmospheric Properties:443.1 ; Groundwater:444.2 ; Geology:481.1 ; Soil Mechanics and Foundations:483 ; Soils and Soil Mechanics:483.1

GEOSCIENCES

2-s2.0-85114138914

Scopus

1.Department of Earth and Environmental Science,School of Human Settlements and Civil Engineering,Xi'an Jiaotong University,Xi'an,China
2.Department of Civil Engineering,School of Human Settlements and Civil Engineering,Xi'an Jiaotong University,Xi'an,China
3.Key Laboratory for Geo-hazards in Loess area,Xi'an Regional Center China,Geological Survey,Xi'an,China
4.Xi'an Regional Center China,Geological Survey,China
5.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,China

Yao，Yingying,Zhang，Maosheng,Deng，Yukun,et al. Evaluation of environmental engineering geology issues caused by rising groundwater levels in Xi'an, China[J]. ENGINEERING GEOLOGY,2021,294.

Yao，Yingying,Zhang，Maosheng,Deng，Yukun,Dong，Ying,Wu，Xinshuang,&Kuang，Xingxing.(2021).Evaluation of environmental engineering geology issues caused by rising groundwater levels in Xi'an, China.ENGINEERING GEOLOGY,294.

Yao，Yingying,et al."Evaluation of environmental engineering geology issues caused by rising groundwater levels in Xi'an, China".ENGINEERING GEOLOGY 294(2021).