| Author | Nguyen Ngoc Minh |
| Call Number | AIT Thesis no.GE-06-06 |
| Subject(s) | Subsidences (Earth movements)--Vietnam--Hanoi
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| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Geotechnical and Geoenvironmental Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-06-06 |
| Abstract | Ha Noi, the capital of Vietnam, is the city of more than 3,5 million people locating in the Red river delta. The city of Hanoi is underlain by sediments consisting of organic and inorganic clays, silt, peat, sand, and gravel with highly compressible capacity. Together with the rapid economic development and population growth, Hanoi is now facing land subsidence caused by ground water exploitation. As the demand of water increases day by day, ground water exploitation capacity has raised sharply from 40,000m3/d in the 1950s to about 750,000m3/d currently and is expected to be up to more than I million m3/d in the year 2020s. The more increased groundwater exploitation the more decreased piezometric levels in the pumped aquifers. The groundwater level used to be about 2 to 4m below ground surface at the beginning, but now it is about 16 to l8m or more below ground surface. The deepest groundwater level is found at Ha Dinh well field with 34 m from the ground surface. In this research, a study on land subsidence due to groundwater pumping in the city of Hanoi, was conducted by collecting and analyzing data on the geology, hydrology, soil properties, and land subsidence monitoring data. The settlement monitoring results shows the real settlement status of the city and the relationship between settlement and the change of groundwater level. In further analysis, an application of land subsidence analysis by using TZ program developed by Giao, 1997 has been carried out to some stations in Hanoi. By this analyzing method, compressible characteristics of each soil layer in soils column caused by head drop in the exploited aquifer has been clear. Calculated settlement has been compared with actual monitoring result and it is possible to forecast the settlement at some selected stations |
| Year | 2006 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-06-06 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Pham Huy Giao; |
| Examination Committee(s) | Noppadol Phien-wej;Bergado, Dennes Taganajan;Meer, Freek Van De; |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2006 |