Feasibility of constructing an underground dam by tomography method (Case Study: Dasht-Baram Watershed, Fars Province)

Authors
hassan moghim 1
Kazem Aarabi 2
Zahra Faramandian 2
Mojtaba khoshnoudi 3
Adel Bagheri 4
1 General office of natural resources and watershed management of Fars province
2 General Directorate of Natural Resources and Watershed Management of Fars Province
3 Mohaseban ab sahra Consulting Engineers Company
4 Sahara Water Accountants Consulting Engineers Company
10.22034/wmji.2025.2046446.1090
Abstract
Considering the droughts and water shortages in the country and the critical nature of the current water situation, efforts should be made to maximize the use of surface water and floods and prevent their waste. In addition to surface water structures, one of the most effective water structure technologies is underground dams. Investigating the construction site of an underground dam is the first step in selecting a location and constructing an underground dam. In this study, the feasibility and location of constructing an underground dam in the Dasht-Baram of Kazerun County, Fars Province, has been investigated and investigated. The study area is covered with oak trees, which is actually part of the Zagros Forest in the Fars Province region. In the studied basin, stratigraphy shows Cretaceous formations up to the present age. The method used in this study to investigate the thickness and depth of alluvium and bedrock is the electrical resistivity method, the dipole-dipole electrical tomography method. For this purpose, three electrical tomography profiles were performed with electrode spacing of 15 meters. The acquisitions were performed with a dipole-dipole (dipole-dipole) arrangement at the proposed underground dam sites. After field measurements, the data were interpreted by computer modeling using the RES2Dinve software. According to the results obtained, all three sites have more or less similar geological conditions. Overall, the most important limiting factor for the construction of an underground dam in the region is the lack of a right support for the dam and the high thickness of alluvium. Therefore, the option of an underground dam at all three proposed sites is not approved and is rejected.
Keywords
Drought
Geology
Geoelectric
Watershed Management
Zagros
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