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Canals in cohesive soils

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Hydrotechnical Construction Aims and scope

Conclusions

  1. 1.

    A physical substantiation of the dimensionless group Mr as a parameter of the resistance of the channel to erosion is given and other dimensionless groups (the flow-channel system) are included in it.

  2. 2.

    New dimensionless groups (6)-(9), which are a development of the Lokhtin-Velikanov idea about the law of interaction of the flow and channel, are proposed for characterizing the channel shape.

  3. 3.

    Equations (17)-(20) are suitable for estimating the hydraulic parameters of a stable channel. By means of these equations the values of the lower limit of the canal channel shape parameter are determined.

  4. 4.

    Equations (25)-(26) when I>Isb serve together with the equations of motion of water, continuity, and channel deformation for determining the hydraulic parameters of the canal during general erosion.

  5. 5.

    If the technical and economic calculations for individual variants when Cc≥ 20,000 Pa do not permit taking the recommended values of the lower limit of parameter B, then it is recommended to use the values of\(\tilde B\) from Table 1 depending on the type of soil with respect to the plasticity index, in which case the permissible value of the maximum depth is estimated by Eq. (29).

  6. 6.

    When the condition I=const<Isb Eqs. (25) and (26) can be used as a first approximation for various discharges.

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Literature cited

  1. A. V. Karaushev, “General and some particular problems of the theory of fluvial processes and slope erosion,” Tr. GGI, No. 191 (1972).

  2. Ts. E. Mirtskhulava, Erosion of Channels and Method of Evaluating Their Stability [in Russian], Kolos, Moscow (1967).

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  3. V. S. Altunin, Reclamation Canals in Unlined Channels [in Russian], Kolos, Moscow (1979).

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  4. I. V. Karasev, Fluvial Processes in the Case of Interbasin Transfer [in Russian], Gidrometeoizdat, Leningrad (1975).

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  5. Yu. M. Kuz'minov, Reclamation Canals in Readily Erodible Soils [in Russian], Kolos, Moscow (1977).

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  6. E. K. Rabkova, “Method of calculating large unlined canals,” Gidrotekh. Melior., No. 2 (1976).

  7. T. A. Aliev. “Estimation of hydraulic resistance of a large unlined canals with consideration of the size of the channel and. bed forms,” in: Investigations of Fluvial Processes for Practical Work of the Economy [in Russian], Moscow State Univ. (1982).

  8. V. s. Altunin, “Provision of stability of unlined canals,” Gidrotekh. Stroit., No. 10 (1984).

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Authors
  1. T. A. Aliev
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Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 6, pp. 31–34, June, 1965.

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Aliev, T.A. Canals in cohesive soils. Hydrotechnical Construction 19, 301–307 (1985). https://doi.org/10.1007/BF02028562

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  • DOI: https://doi.org/10.1007/BF02028562

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