RU2695190C1 - Method to increase bearing capacity of ice cover - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to ice-making and can be used to create an ice crossing for the transport of goods. Method consists in that the carrying capacity of the ice crossing cover of the ferry is increased by means of steel pipes lowered vertically to the bottom of the basin through the through holes formed in the ice cover on both edges of the crossing along its entire length, the bottom end of the pipe is made brewed, and its upper end protrudes above the ice surface. Pipes are made in the form of spiral springs, at that, on the lower surface of the coils of the springs a coating is applied with minimum adhesion to ice, and on the top – there are installed the splintering teeth.

EFFECT: increased reliability of ice crossing operation is achieved due to provision of independence of its lifting capacity against fluctuations of water level in water reservoir.

1 cl, 2 dwg

Description

The invention relates to the field of ice engineering and can be used to create an ice ferry for transporting goods.

A technical solution is known (1. Kozin VM, RF Patent No. 2135685 of 08/27/1999), in which the method of creating an ice crossing consists in placing steel pipes under ice, dropped vertically to the bottom of the pool through the through holes formed in the ice cover on both the edges of the crossing along its entire length, with the bottom end of the pipes made brewed, and its upper end protruding above the ice surface. Cold air, as heavier, enters the pipes, causing ice to freeze over their entire outer surface. After a sufficient time has elapsed for reliable freezing of the lower and upper parts of the pipes to the bottom of the pool and the ice cover, respectively, and the ice layer of the required thickness freezes on the pipe surfaces, the ice crossing is ready for operation.

The disadvantage of this method is the danger of its use with significant fluctuations in the water level in the reservoir, which inevitably occur throughout the winter period. So, when the level rises, detachment of the bottom ends of the pipes can occur, and when they fall, the ice cover itself can be destroyed in places where it freezes to the upper ends of the pipes.

The objective of the claimed invention is the creation of an ice ferry, the bearing capacity of which would not depend on fluctuations in the water level in the reservoir.

The technical result achieved in solving the problem is to increase the degree of reliability of the operation of the ice crossing by creating an ice crossing, the bearing capacity of which does not depend on fluctuations in the water level in the reservoir.

The essential features characterizing the invention:

Restrictive: the load-bearing capacity of the ice cover is increased by means of steel pipes, lowered vertically to the bottom of the pool through the through holes formed in the ice cover on both edges of the crossing along its entire length, the bottom end of the pipe being welded and its upper end protruding above the ice surface.

Distinctive: the pipes are made in the form of spiral springs, while the lower surface of the coil of the springs is coated with minimal adhesion to ice, and ice-cutting teeth are installed on the upper surface.

The method is as follows.

Rows of through holes are drilled in the ice sheet on both sides of the intended cargo transportation path. Through them, pipes in the form of spiral springs with welded lower ends are vertically lowered under the ice and abut them in the bottom of the pool. The length of the supports should be sufficient so that their upper end rises above the surface of the ice sheet. To prevent possible ascent of pipes, they are temporarily fixed. Then, the ice crossing thus prepared is subjected to negative temperatures. Cold air (t <0 ° C) enters the pipes, causing ice to freeze over their entire outer surface, i.e. the formation of peculiar ice piles (ice supports) under the ice cover, which will certainly increase the strength of the ice crossing. After a sufficient time has passed for the ice layer of the required thickness h to freeze on the pipe surfaces, the ice ferry is ready for operation, but only for a given water level in the reservoir. Since this level, of course, will fluctuate during the entire period of freezing, to reduce the undesirable consequences of changing the water level, a lower adhesion coating is applied to the lower surface of the spring turns, for example, anti-icing silicon-organic coating (PAKOR) TU84- 725-78, and on the upper - ice-setting teeth are installed, for example, made in the form of cones.

With increasing water level, the springs will begin to stretch, and due to weak freezing (adhesion) with ice on the lower surfaces of the coil turns, they will begin to separate easily from adjacent layers of ice. The resulting water layers due to the incoming cold air will begin to freeze, which will lead to the restoration of the integrity of the ice supports of the crossing.

When the water level in the pond drops, the springs begin to compress. Thanks to the ice-clearing teeth installed on the upper surfaces of the coil springs, the ice layers between them will begin to chip, which will not provide significant resistance to reducing their compression. The destroyed ice regions of the supports due to their connection with cold atmospheric air are frozen, i.e. recover, which will also lead to the restoration of the integrity of the ice support ferry.

As a result, the claimed technical result will be achieved.

The invention is illustrated graphically, where: in FIG. 1 shows a general view of a crossing; in FIG. 2 is a section AA in FIG. one.

In the ice sheet 1, on both sides of the intended cargo transportation path 2, rows of through holes 3 are drilled. Through them, pipes 4 with welded lower ends are vertically lowered under the ice and abutted to the bottom of the pool 5 (Fig. 1), and pipes 4 are made in the form of spiral springs 6 (Fig. 2), on the lower surface of which a coating 7 is applied with minimal adhesion to ice, and on the upper surface ice-free teeth 8 are installed (Fig. 2).

Claims (1)

A method of increasing the bearing capacity of the ice cover by means of steel pipes dropped vertically to the bottom of the pool through the through holes formed in the ice cover on both edges of the crossing along its entire length, the bottom end of the pipes being made brewed and the upper end protruding above the ice surface, characterized in that the pipes are made in the form of spiral springs, while the lower surface of the coil of the springs is coated with minimal adhesion to ice, and the icing teeth are installed on the upper surface.

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