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 directed to improving the reliability of ice crossings when the presence of intense currents. This technical result is achieved due to the increased 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 in ice cover, and the bottom is attached along the entire length of the plate strip of impermeable fabric. 1 Il.

The invention relates to the field of letterlike 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. - 345 C.), in which method sozdaniya 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 the CA terminal in the presence of intense ice flow. In rivers with strong current 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 recent trends.

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

The essential features characterizing 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 the direction of the last flow, inclined install the plate with the upper edge of the flange for fixing it on the ice surface by vmerzanii in ice cover, and the bottom is attached along the entire length of the plate strip of impermeable fabric.

It is known that in conditions of stagnant water (e.g. lakes and reservoirs), freeze sooner and thickness of the ice cover is greater than the waters over (rivers) at the same rate.). Therefore, if under the ice cover along the planned ice crossings across its width to keep the flow of water, the intensity increase of the ice thickness will increase. Stop the flow of water through education under the ice closed volume, i.e. the volume in which the velocity relative to the ice cover is equal to zero.

The method is as follows.

In ice cover along the planned ice crossings across the speed of ice flow condition through slot along the entire length of the crossing. Then through it under the ice inclined lower plate, the lower edge of which is fixed a strip of impermeable fabric oncoming flow fabric stands up, and its free edge is pressed against the lower surface of the ice cover. The result under the ice is formed a closed volume in which there is no translational motion of the water.

The invention is illustrated in the drawing, which shows a diagram of the formation beneath the ice closed volume.

In ice cover 1 along the intended direction of transport of goods U, i.e., the axis of the terminal, perpendicular to the direction of the velocity vector ice flow prepare inclined through slot 2 and all is well 3 height (H > h, which is to facilitate its fastening on ice by vmerzanii has on the upper edge of the flange 4, and the bottom is attached along the entire length of the plate strip of impermeable fabric 5. The incident with the speed of the water flow flattens the fabric, and its free edge 6 proginet to the bottom surface of the ice cover 7. The result under the ice is formed a closed volume 8, in which there is no translational motion of water. After vmerzanii plates in the ice, i.e. the freezing of water received in the slot 2, the thus prepared ice crossing is exposed to low temperature (t < 0oC) within the time required for freezing under ice 1 ice layer 9 of a thickness sufficient for reliable transportation to the 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, and the bottom is attached to the

 

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