Download Hydraulic Canals: Design, Construction, Regulation and by Jose Liria Montanes PDF

By Jose Liria Montanes

ISBN-10: 0203012429

ISBN-13: 9780203012420

ISBN-10: 0415362113

ISBN-13: 9780415362115

Aimed toward engineers with an outstanding grounding in hydraulic engineering, this functional reference fills a necessity for a advisor to the layout, building, administration and modernisation of canals. It presents an in-depth research of the issues brought on by seepage, an research of a number of the attainable linings, the restrictions posed by way of canals built with out linings, and correct equipment of calculation together with the calculation of many of the buildings within the canal, so much significantly the gates. perfect for somebody fascinated about the development or preservation of canals, this e-book provides potent upkeep and conservation tips on how to optimise solid administration and potency.

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Hydraulic Canals: Design, Construction, Regulation and Maintenance

Geared toward engineers with a superb grounding in hydraulic engineering, this useful reference fills a necessity for a advisor to the layout, building, administration and modernisation of canals. It presents an in-depth examine of the issues as a result of seepage, an research of many of the attainable linings, the limitations posed by way of canals built with no linings, and correct tools of calculation together with the calculation of a number of the constructions within the canal, such a lot particularly the gates.

Additional resources for Hydraulic Canals: Design, Construction, Regulation and Maintenance

Example text

Full information on this topic can be seen in numerous books on hydraulic theory (49), (80), (98). 16 Hydraulic operation of a canal At present it is easy to make or find computer programs to perform this calculation. Programs that can do the general study of a complete canal, including all kinds of inserted singular works by the Bureau of Reclamation, should be mentioned (21). The water surface types that may occur in a canal in the gradually varied movement are the subject of detailed study in many books (15), (16), (49), (89), (98).

The value we have obtained using 2 5 × 10−4 cm/s as a soil permeability in which a canal may be built without lining, with losses limited to 25 l/m2 in 24 hours, is the one corresponding to silts with permeability levels close to the very fine sands. We may summarize by approximately saying that the silt (or mixtures of soils with equivalent permeability) is the material that separates (regarding to admissible leaks) the soils that allow the construction of unlined canals of those that require a waterproof lining.

The functioning of hydraulic jump is based on two fundamental equations: the preservation of the water mass (what comes in goes out) and the preservation of the amount of movement, since there are no exterior forces to the jump, just the interior forces that act between the two parts with a distinct depth. If we call y1 and y2 the water depths in metres before and after the hydraulic jump, q the rate of flow per metre of width in m3 /sec. (we are assuming a rectangular canal), the formula that relates the two depths is y2 = y1 8q 2 −1 + 1 + 2 g/y13 The water depth y2 is called a conjugate of y1 and is necessary in order for the hydraulic jump to occur.

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Hydraulic Canals: Design, Construction, Regulation and Maintenance by Jose Liria Montanes


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