SU1738896A1 - Anti-filtration channel facing - Google Patents

Abstract

Use: for lining irrigation canals. The invention on the bottom and slopes of the channel is laid reinforced concrete slabs 1 with longitudinal support ribs 2, the space 3 is filled to the level with bentonite and covered with facing slabs 4. The joints between the slabs of the upper layer are sealed with cement-sand solution 5 2 silt

Description

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The invention relates to hydraulic construction and can be applied to create an impervious lining on irrigation canals.

The aim of the invention is to reduce filtration losses and increase operational reliability.

Figure 1 presents the location of the facing plates on the slopes of the channel; figure 2 - section aa in figure 1.

The channel facing structure is a lower layer of plates 1 with supporting longitudinal ribs 2 in the upper part, the upper layer of plates 3, a space 4 between them filled with bentonite, the joints between the plates are sealed with a cement-sand mortar 5.

Plates 1 of the lower layer with supporting longitudinal ribs 2 in the upper part are laid on the earth bottom and slopes. The length of the ribs is shorter than the lengths of these plates, due to which a gap is formed between adjacent edges in order to ensure the continuity of the bentonite carpet at the joints of the plates, which fill space 4 to the level

ribs. The bentonite layer is covered with facing plates 3 of the upper layers that rest on the longitudinal ribs. Then the joints between the plates are sealed with cement-sand mortar 5.

The strength of the anti-filtration lining of the channel is sufficient to reduce filtration losses and increase operational reliability compared with the known anti-filtration lining.

Claims (1)

Invention Formulation channel lining, which includes reinforced concrete slabs arranged in two layers, characterized in that, in order to reduce filtration losses and increase operational reliability, the bottom layer slabs are made with supporting longitudinal ribs in the upper part, the ribs being shorter than these plates with the formation of a gap between adjacent edges in the plan, and the space between the plates of the upper and lower layers and the gap between the edges of the plates is filled with bentonite. Ј} V / // V / V / / V / AV AV (yig.1 four