Geodetic and GIS tools for dam safety: case of Sidi Salem dam (northern Tunisia) |
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| Authors: | Salwa Saidi Hadil Houimli Jalel Zid |
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| Institution: | 1.University of Sciences Tunis,Tunis,Tunisia;2.Water, Energy and Environment Laboratory,National Engineering School Sfax,Sfax,Tunisia;3.National School of Architecture and Urban Planning of Tunisia,Tunis,Tunisia;4.Topographical and Land Registry Office of Tunisia,Tunis,Tunisia |
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| Abstract: | The dams are one of the important engineering structures used for water supply and different other important purposes. In order to provide safety, well-planned and implemented geodetic monitoring is very essential for such engineering structures, which constitute the aim of this study. In fact, micro-geodetic data can be exploited and used to survey the displacement of dam by measuring the horizontal and vertical coordinates at different dates from fixed positions (pillars) to other positions (targets). As a result, the superposition of the geodetic auscultation charts and the factors which can affect the stability of dams such as water level, hydrostatic pressure, and seismic state show a net correlation between these parameters and the auscultation variation at different periods. Geographical information system (GIS) techniques are used for mapping spatial variation of auscultation measures. These synthetic documents can help managers and decision makers in hydraulic management and water system protection. |
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