Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XII
Written by Iulia Diana ARION, Felix ARION, Irina Maria MORAR
The characterisation and knowledge of the Gurghiu drainage basin represents a realistic analysis of the current state of the drainage basin. This analysis led to the obtaining of information on morphometric parameters specific to the drainage basin and the Orşova, Fâncel and Sirod sub-drainage basins; the current state, together with the effects and efficiency of torrent correction works in these sub-drainage basins and the knowledge of the grain size of the alluviums accumulated behind the hydrotechnical works. To analyse the profitability of the hydrological management work in the sub-drainage basin Fâncel, a series of specific indicators were used: specific investment, duration of the recovery of the investment, updated net value, internal rate of return and profitability index. The total amount of alluvium retained in the valleys of the Gurghiu hydrographic basin is 24,960.3 m3, with direct retention accounting for 6,774.55 m3 and consolidation for 8,185.8 m3. The analysis reveals that the costs associated with extracting torrential alluvium would have been roughly 1,859.55 thousand lei. Recommendations are to urgently restore essential repairs to damaged, broken, or detached parts of the work, to cover infiltrations and cracks and to complete masonry in places affected by degradations.
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