A method of creating ice crossing

 

(57) Abstract:

The invention relates to the field of hladotehnika and can be used when creating the ice terminal for cargo transportation. The invention is aimed at improving the bearing capacity of ice crossings when the presence of intense ice flow. This technical result is achieved by increasing the thickness of the ice. For this purpose under the ice cover through a through slot prepared in the past and oriented perpendicular to the direction of ice flow, inclined install the plate with the upper edge of the flange for fixing it on the ice surface by vmerzanii it in the ice cover. 1 Il.

The invention relates to the field of hladotehnika and can be used when creating the ice terminal for cargo transportation.

Known technical solution (1. I. S. Peschansky. Lagoudera and hladotehnika. - L.: Sea transport 1963 S. 345), in which a method of creating ice crossing is in the preparation of the ice cover by the early clearing of the ice surface from snow along the intended path for faster growth of ice thickness.

The disadvantage spov channels with strong currents, the intensity of the ice buildup is reduced, and in some cases freeze-up is not observed even in extreme cold (for example, on mountain rivers).

The task of the invention is to provide a reliable ice crossings when the presence of intense ice flow.

Technical result achieved when the task is to increase the thickness of the ice.

The essential features that characterize the invention.

Restrictive: ice crossing is generated by the Stripping of the ice cover from snow.

Distinctive: under the ice cover through a through slot formed in the latter and oriented perpendicular to the direction of ice flow, inclined install the plate with the upper edge of the flange for fixing it on the ice surface by vmerzanii in ice.

It is known (2. Altshul A. D. Hydraulic resistance. M.: stroiizdat, 1973) that in the presence of fluid flow of the hydraulic resistance in the form of a valve or vertical plate, oriented across the flow for prolonged stagnant zone, where there is a decline in the power and speed of the fluid. If the plate is tilted, the width sepolta this hydraulic property of the fluid flow, by effectively freezes the water under the ice cover in the place of the scheduled ice crossing to create favorable conditions for intensive growth of ice thickness.

The method is as follows.

In ice cover along the intended path of the ice crossing across the speed of ice flow is purchasing through slot along the entire length of the crossing. Then through it under the ice inclined lower plate. After vmerzanii top edge of the plate in ice ice crossing is exposed to low temperatures for a time sufficient to freeze under the plate of the required thickness of ice.

The invention is illustrated graphically, where the drawing shows a diagram of the installation plate.

In ice cover 1 along the intended direction of transport of goods U perpendicular to the direction of the velocity vector ice flow prepare inclined through slot 2 along the entire length of the ice crossing. Then through the slot 2 under the ice tilted at an angle ( < 90o) lower plate 3 height (H > h, which is to facilitate its fastening on ice has on the upper edge of the flange 4. After vmerzanii plate in the ice, i.e. the freezing air temperatures (t < 0oC) within the time required for freezing under the plate of the ice layer 5 with a thickness sufficient for reliable transportation of goods in an ice crossing.

The way to create icy crossing, consisting of scraping ice from snow, characterized in that beneath the ice cover through a through slot formed in the latter and oriented perpendicular to the direction of ice flow, inclined install the plate with the upper edge of the flange for fixing it on the ice surface by vmerzanii in ice cover.

 

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