結合HEC-RAS與MODFLOW模式評估 濁水溪沖積扇地下水位及地層下陷

Shin Wei Lee, Chen Feng Yeh, Cheng Haw Lee, Hung I. Lin, Wen Jui Kung

研究成果: Article同行評審

摘要

Land subsidence caused by over pumping of groundwater resource has severely caused large-scale damage to the Choushui river alluvial fan of the western area in Taiwan. The center of subsidence which has gradually moved inland in recent years will affect the safety of high speed rail and that of other major engineering projects. Therefore, this study uses integrated numerical models to simulate the effect on groundwater level and land subsidence in the study area. The MODFLOW model and INTERBED model with IBS1 modulus are adopted to simulate groundwater flow and land subsidence respectively. Moreover, HEC-RAS is utilized in this study to calculate the stream water level in order to represent groundwater-river interaction in groundwater system with River package. The result shows that the mean recharge of Choushui river alluvial fan is 1.95 billion tons, and the mean surface recharge, lateral recharge and river recharge are 1.01, 0.57 and 0.36 billion tons, respectively. The discharge of Choushui river alluvial fan is 2.08 billion tons, and the maximum discharge is in aquifer two. The discharge is 0.91 billion tons. The groundwater system is still over used during the simulated period. Besides, when an integration among HEC-RAS, MODFLOW and INTERBED models with IBS1 modulus was executed, results indicated that most of the region still has the problem of subsidence in aquifer two and aquifer three on Choushui river alluvial fan. Meanwhile, the subsidence condition is slowing down gradually at the coastal area and instead moving to the inland area. The above result may apply to evaluate groundwater management and reduce the damage from the land subsidence in the study area.

貢獻的翻譯標題An integration between HEC-RAS and MODFLOW to evaluate groundwater level and subsidence of aquifers on Choushui River Alluvial Fan
原文???core.languages.zh_ZH???
頁(從 - 到)91-102
頁數12
期刊Taiwan Water Conservancy
67
發行號1
出版狀態Published - 2019 一月 1

All Science Journal Classification (ASJC) codes

  • 環境工程
  • 水科學與技術

指紋

深入研究「結合HEC-RAS與MODFLOW模式評估 濁水溪沖積扇地下水位及地層下陷」主題。共同形成了獨特的指紋。

引用此