RU2626857C1 - Method of increasing carrying capacity of ice cover - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: carrying capacity of the ice cover is increased by means of steel pipes lowered vertically to the basin bottom via through openings formed in the ice cover along both sides of the crossing along its entire length, the bottom end of the pipe being made welded and its upper end projecting over the ice surface. In the upper ends of the pipes, heating elements are attached on flexible ties, made in the form of rings, the diameter of which exceeds the dimensions of ice formations frozen on the pipes.

EFFECT: increasing the load degree.

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 dated 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 by solving the problem is to increase the degree of reliability of the operation of the ice crossing.

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: heating elements made in the form of rings, the diameter of which exceeds the dimensions of ice formations frozen on the pipes, are attached to the upper ends of the pipes on flexible connections.

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 with welded lower ends are vertically lowered through the ice and abut them in the bottom of the pool. The length of the pipes 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, heavy 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 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 throughout the entire period of freezing, then to eliminate the consequences of changes in water levels, i.e. to ensure the integrity of the ice cover, heating elements in the form of rings, the diameter of which exceeds the dimensions of the ice formations frozen on the pipes, are attached to the upper ends of the pipes on flexible bonds. If during operation of the crossing due to a significant change in the water level in the reservoir there is a risk of damage, then turn on the heating element. The gap melted beneath it will allow the ice cover to float, i.e. move up in relation to the support when the water level rises and lower - when it drops. Operation of the ice crossing can be continued only after the water completely freezes in the formed lane, which will achieve the claimed technical result.

The invention is illustrated graphically, where: in FIG. 1 shows a general view of a crossing; in FIG. 2 is a section along 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 abut against the bottom of the pool 5 (Fig. 1). To the upper ends of the pipes 4 on flexible connections 6 are attached heating elements 7 connected to power supplies 8 (Fig. 1, 2). If there is a risk of damage to the crossing (ice sheet 1 at the pipe installation sites 4), the heating elements 7 are turned on. As a result, the ice under them will melt and the ice sheet from position I (Fig. 2 “a”) will move to position II (Fig. 2 “b ") When the water level rises or in position III (Fig. 2" c ") while lowering the water level. Operation of the ice crossing can be continued after the water 9 completely freezes in the formed lane 10 (Fig. 2 “b”, “c”).

Claims (1)

The method of increasing the bearing capacity of the ice cover used as an ice crossing by means of steel pipes dropped vertically to the bottom of the pool through the through holes formed in the ice cover along both edges of the crossing along its entire length, the bottom end of the pipes being welded and the upper end protruding over an ice surface, characterized in that heating elements made in the form of rings, the diameter of which exceeds the dimensions of the frozen ones, are attached to the upper ends of the pipes on flexible bonds pipes and ice formations.

Images