| Project/Area Number |
14404003
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Geotechnical engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
OHTSU Hiroyasu Kyoto University, International Innovation Center, Professor, 国際融合創造センター, 教授 (40293881)
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| Co-Investigator(Kenkyū-buntansha) |
OHNISHI Yuzo Kyoto University, Graduate School of Engineering, Professor, 工学研究科, 教授 (30026348)
NISHIYAMA Satoshi Kyoto University, Graduate School of Engineering, Associate Professor, 工学研究科, 助教授 (00324658)
YASUDA Tooru Pacific Consultants Co.LTD., Osaka Head Office, Engineering Division, Project Leader, 大阪本社プロジェクト部技術課, プロジェクトリーダー(研究職)
LEE Keita CTI Engineering Co., LTD., Osaka Branch Office, Environmental Engineering Department, manager, 大阪支社環境本部技術部, 課長(研究職)
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| Project Period (FY) |
2002 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥11,400,000 (Direct Cost: ¥11,400,000)
Fiscal Year 2004: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2003: ¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2002: ¥3,600,000 (Direct Cost: ¥3,600,000)
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| Keywords | Regional groundwater / land subsidence / 洪水リスク |
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| Research Abstract |
In this study, the following research works were conducted:
・Data collection and/or analysis associated with the impact of groundwater extraction on urban groundwater Environment in Hanoi, Vietnam
・Establishment of simulation modeling on groundwater behavior due to groundwater extraction in Great Bangkok areas, Thailand
First, in order to collect data on results of groundwater monitoring and investigate current situation of groundwater Environment in Hanoi, our research group has held workshop in Hanoi together with Vietnamese researchers and engineers. As a result of investigation, the following findings were obtained:
・Little decrease of pore water pressure in aquifers due to groundwater extraction is observed, because the amount of Groundwater usage currently balances with water supply from surrounding rivers.
Secondly, prediction of groundwater behavior and related land subsidence due to groundwater extraction in Great Bangkok area was conducted. Results showed that the control measures
… More
on groundwater pumping issued by Bangkok Metropolitan Office effectively helped to decrease the rate of subsidence in central area of Bangkok. However, it was predicted that additional land subsidence in surroundings areas amounts to 0.5m-1.0m, though the rate of subsidence decreases. In addition, the sensitivity analysis of uncertain factors involved in evaluation of land subsidence made it clear that clay contents involved in Bangkok aquifers are dominant one.
Furthermore, flood risk analysis against settlement of dyke along Chao Phraya river, which flows through Great Bangkok area, was conducted. In detail, exceedanee probability of land subsidence to allowable settlement was selected as index to investigate flood risk. Finally, following findings were obtained:
・Flood risk along Chao Phraya river varies from place to place because of subsoil profile and location of pumping wells.
・Uncertainly associated with clay contents involved in Bangkok aquifers is dominant risk factors against flood. Less
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