Evaluar la eficiencia de la conducción principal del sistema de riego Santiago
An irrigation canal is a hydraulic structure through which water flows under the action of gravity, taking into account a negative slope. This research was carried out in the main canal of the Santiago irrigation system to evaluate the effectiveness of water transport and to determine the volumetric...
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| Hovedforfatter: | |
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| Format: | bachelorThesis |
| Sprog: | spa |
| Udgivet: |
2023
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| Fag: | |
| Online adgang: | https://dspace.unl.edu.ec/jspui/handle/123456789/28335 |
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Tilføj Tag | Summary: | An irrigation canal is a hydraulic structure through which water flows under the action of gravity, taking into account a negative slope. This research was carried out in the main canal of the Santiago irrigation system to evaluate the effectiveness of water transport and to determine the volumetric water losses through the canal. The canal is 41 km long and the concrete walls are in a state of erosion, with significant water losses due to their poor condition. The investigation commenced with a topographical survey, geometric measurement of pre-selected cross-sections of the canal, where the evaluation was carried out, starting with the measurement of the canal length, slope and flow measurement tests using the float method, which revealed an average flow rate of 183,091/sec. In addition, the Hchannels software was used to determine the design flow rate and to compare the difference between the measured flow rate and the design flow rate. Hydraulic formulae were used for volumetric losses, such as the Davis-Wilson formula, which gives a value of 0,90 l/s/km, and the Moritz model, which gives 1,99 l/s/km. On the other hand, for the T. Ingham method, the average loss in the sections studied is 1,61 l/s/km, corresponding to 0,16 %, and for the Uginchus method it is 28,8 l/s/km, corresponding to 2,88 %, which is a low value considering that in earth canals it can reach values of up to 15 % for light soil, 10 % for medium soil and 5 % for heavy soil. The amount of water lost in the sections studied is 4,83 l/s/km. In the Santiago irrigation canal, an average water transport efficiency of 75,57% was achieved, which is considered low in comparison with other similar studies. The results show that there are significant water losses in the main canal due to the deterioration of the concrete walls and sills as a result of poor management and maintenance, reaching losses of 28,8 l/s/km, which means that 3,6 hectares are left without water for irrigation. |
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