THEORETICAL STUDIES OF FILTRATION FROM IRRIGATION CHANNELS

Abstract

Purpose: theoretical analysis of filtration losses in irrigation channels when using impervious materials. Materials and methods. The study is based on the theoretical component of the research of such scientists as S. F. Averyanov, A. N. Kostyakov, G. K. Rizen¬kampf, V. N. Lazovoy, A. P. Vasilchenko, M. S. Vyzgo and others. Filtration was considered using traditional methods of lining irrigation canals, as well as through natural soil. The hydraulic methods for calculating water filtration losses are described, and the formulas for calculating the protective (impervious) layer from local (ground) materials are provided. The need to use chemical methods to reduce water losses from channels is noted. Formalization and generalization were the main research methods. Results. Information on possible reduction of water losses from the channel and the correlation between the indicators of filtration losses and the filtration coefficient is given. A comparative calculation of losses by two methods, taking into account the impervious layer thickness, as well as the presence or absence of lining is provided. Conclusions. Maintaining the efficient operation of irrigation channels is possible only with the use of modern lining materials and their timely maintenance. A large selection and availability of lining materials provides the possibility of increasing the efficiency of water transportation in almost the same volume and without losses. The main advantages of modern linings are that they are much more economical and are aimed at eliminating the irrigation water losses.

Keywords

• irrigation channels
• filtration
• irrigation system
• impervious materials
• construction and reconstruction