NUMERICAL SIMULATION OF UPLIFT PRESSURE AND RELIEF DRAINS AT A DAM RESERVOIR
| Autor: | Necati Erdem Kalaycioglu, Mehmet Ekmekci, Sukran Acikel, Salih Bilgin Akman, Otgonbayar Namkhai |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
geography
geography.geographical_feature_category Hydrogeology Environmental Engineering Computer simulation 0211 other engineering and technologies Aquifer 02 engineering and technology Structural basin 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Uplift pressure Spring (hydrology) Earth and Planetary Sciences (miscellaneous) Geotechnical engineering Stage (hydrology) Geology 021101 geological & geomatics engineering 0105 earth and related environmental sciences |
| Zdroj: | Environmental & Engineering Geoscience. :1078-7275.EEG |
| ISSN: | 1078-7275 |
| DOI: | 10.2113/eeg-1843 |
| Popis: | The Melen Dam in under construction to support the water supply to Istanbul Metropolitan city. Karstified limestone that forms the major aquifer in the region crops out at the right bank of the reservoir and extends to the adjacent basin where it is drained by two main springs. An area of 20 ha that is covered by this limestone is planned to be lined by concrete slabs. Another spring that discharges within this lining area will be plugged by the concrete slabs. As a consequence, piezometric pressure is expected to build up underneath the concrete lining which will develop an uplift pressure. Prediction and relief of the uplift pressure is of utmost importance in optimizing the concrete lining. This was achieved by numerical simulation of the pre-lining and post-lining conditions at the site. This required development of a representative hydrogeological conceptual model as the very first stage. The conceptual model was then transferred to a numerical model through the software Seep/w of GeoSlope™ version 2007. The optimal design of the concrete lining was developed after performing a number of numerical simulations on the calibrated model. The model suggested that the uplift pressure would be relieved to an acceptable level by construction of drains underneath the concrete slabs at certain locations. |
| Databáze: | OpenAIRE |
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