Modeling the influences of land reclamation on groundwater systems: A case study in Shekou peninsula, Shenzhen, China
Modeling the influences of land reclamation on groundwater systems: A case study in Shekou peninsula, Shenzhen, China
复制标题
DOI：
10.1016/j.enggeo.2010.04.011
复制
发表时间：
2010-08-10
影响因子：
7.4
通讯作者：
Jiao, Jiu Jimmy
中科院分区：
文献类型：
--
作者：
Hu, Litang;Jiao, Jiu Jimmy
世界许多地区已沿着沿海地区开垦土地，以满足对住房和其他土地用途日益增长的需求。中国深圳蛇口半岛周围已填海超过15公里（2）。土地复垦可能对地下水系统产生重大影响，但这一问题尚未得到充分研究。采用FEFLOW（Diersch，2005）三维地下水有限元模型，模拟了蛇口半岛1983 - 2007年围填海影响下地下水系统的响应。该模型进行了校准，对观测到的地下水位在三个观测威尔斯。结果表明，围垦后，研究区地下水位出现区域性上升。西部和东部海岸线之间的地下水分界线在不同的填海阶段移动。结果还表明，由于新填海造地补给量的增加，沿着地下水排泄量增加。该模型预测了2007年至2025年地下水位的变化，表明含水层系统对土地复垦的响应是一个长期的过程。地下水位将进一步上升，可能需要大约10年时间才能使系统达到新的平衡。建议在填海前模拟大规模填海引起的地下水流系统变化，以研究可能的工程和环境后果。皇冠版权所有（C）2010由爱思唯尔B. V.出版保留所有权利。
Land has been reclaimed along the coastal areas in many parts of the world to meet the growing demand for houses and other land use. Over 15 km(2) of land has been reclaimed around the Shekou peninsula, Shenzhen, China. Land reclamation may have significant influences on groundwater systems but this problem has not been adequately studied. Using FEFLOW (Diersch, 2005), a three-dimensional finite element groundwater model, the response of the groundwater system on the impact of land reclamation in the Shekou peninsula from 1983 to 2007 was simulated. The model was calibrated against observed groundwater levels in three observation wells. The results showed that, after reclamation, there was a regional increase of groundwater level in the study area. The groundwater divide between western and eastern coastlines moved during different reclamation stages. The results also showed that, submarine groundwater discharge along the coastlines was increased due to the increase of recharge in the newly reclaimed land. The model predicts change of groundwater level between 2007 and 2025, which demonstrates that the response of the aquifer system to land reclamation is a long lasting process. There will be a further increase in groundwater level and it may take about 10 years for the systems to reach a new equilibrium. It is suggested that the changes of the groundwater flow system due to large-scale land reclamation should be modeled before reclamation to investigate possible engineering and environmental consequences. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.