Dual-cable netted ice guard for water conveyance canal

Abstract

The invention relates to a dual-cable netted ice guard for a water conveyance canal, which comprises anchored piles, wire cables and segments, wherein the anchored piles are fixed on both sides of the canal; the wire cables are fixed on the anchored piles through buckles; and each segment consists of an ice guard net and drift wood, the ice guard net in a netted structure is formed by welding steel bars and is perpendicularly arranged in canal water, the ice guard net is fixed to the drift wood, lantern rings are welded on the ice guard net, the segments are sheathed on two wire cables through the lantern rings, and the wire cable on the outer side or inner side of each lantern ring is provided with a positioning buckle, thereby ensuring that the segments are positioned on the wire cables. The invention has the advantages of simple structure, convenient processing, low cost and good ice guard effect. The water conveyance canal adopts the dual-cable netted ice guard, thereby effectively retarding ice floccule and ice slush, reducing the downstream conveying of ice slush, realizing the goal of forming an icecap in place and melting the icecap in situ, and reducing the possibility of forming ice jams, ice dams and other extreme ice damage downstream. Thus, the invention is very important for realizing safe and stable water conveyance in long-distance water conveyance canals in an ice period.

Description

Technical field [0001] The invention relates to ice damage prevention and control technology for water delivery channels, in particular to a double-cable-net type ice-stopping cable for water delivery channels. Background technique [0002] At present, the structure of the ice cable used in the project is usually a single steel wire rope connected in series with multiple sections of cuboids, cylinders and other types of driftwood. The length of a single driftwood is mostly 1.0-5.0 meters, and the cross-sectional diameter is about 0.3-0.6 meters. Through engineering practice and experimental research, it is found that the above-mentioned type of ice-line has high requirements on the flow velocity, and can only play a certain role in the case of very low flow velocity. When the flow velocity increases, the ice will flow from above or below the ice-line. After passing, the ice cable will slide on the upper or lower surface of the ice slug, thus completely losing the ice blockin...

AI Technical Summary

Problems solved by technology

After the ice rope fails, the amount of ice transported downstream will increase. If the ice carrying capacity of the downstream channel is exceeded, extreme ice damage such as ice plugs and ice dams will easily form at bends, gates or inverted siphons, and may cause serious economic and social losses

[0003] The traditional type of ice-stopping cable cannot effectively block the ice slush, and cannot achieve the purpose of preventing ice damage; secondly, due to its high requirements on the flow rate, it increases the difficulty of project scheduling and operation, and reduces the scheduling of long-distance water delivery systems. flexibility, which is not conducive to ensuring safe and stable water delivery during ice ages

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