Method to form lane in winter period

FIELD: mining.

SUBSTANCE: in method to form lane in winter period, including laying of heat insulation material onto water surface in the form of balls arranged as hollow with rigid plastic or silicon shell, besides, required quantity of balls per 1 m2 of water surface is determined using mathematical formula.

EFFECT: reduced environmental damage done to ambient water medium and prolongation of production season in winter period.

1 ex

 

The method applies to mining, marine and other industries associated with work in the winter, and can be used for the education of the lane.

Known methods of creating a lane based on the change in the intensity of heat transfer surface water to the atmosphere by applying onto the surface of the water in the main floating pins (Altaner IM Technology and complex mechanization of surface mining. Part 3. Dredging and underwater mining: a Textbook for high schools. - M.: Publishing house "World mountain books, 2006. - Book 1: Developing species-hydro and suction apparatus. - 546 S.)

The disadvantage of this method is that the foam is an environmentally friendly material, as it contains toxic substances that cause environmental damage to water bodies. Also there is a lack in the technology of applying the foam to the surface, as laying the next layer of foam is produced in a certain period of time after laying the initial layer of foam.

The closest to the technical nature of the proposed method is a method of saving water in the reservoir for technical purposes, which consists in laying on the surface of the water foam cover, made in the form of a set of identical or different sizes penoplastovym the balls, placed freely on the water surface (patent RF №2049199, IPC EV 15/00, publ. 1995.11.27).

The disadvantage of this method is that the foam is not an environmentally friendly material because it possesses a fragile properties and in certain conditions, crumbles easily, which leads to contamination of the aquatic environment.

The main objective of the method is to reduce the environmental damage to the surrounding aquatic environment, and in the renewal of the mining season in the winter by reducing heat transfer rate to the surface of the water with the atmosphere, which prevents ice formation on the surface of the reservoir and allows the dredgers and drag to maneuver freely.

This is achieved in the way of education lane in winter, including laying on the surface of the water heat insulating material in the form of balls, hollow hard plastic or silicone shell, and the required number of balls per 1 m2the water surface is determined by the formula:

;

where ks- coefficient taking into account the increase in free water surface while maneuvering vessels and dredges in the area, filled with balls, m2;

;

kt- temperature coefficient that takes into account the dependence on the diameter of the balls;

ΔS - when Amenia square, m2;

d is the diameter of the balls, m; π=3,14.

The method consists in the use of balls of hard material of low heat capacity (plastic or silicone). The air inside the balls serves as a heat insulator, which prevents namerzanie ice. Moreover, there is a certain number of balls, which is proportional to the square of the lane.

The method is as follows.

Framing area in which to maneuver dredge (dredge). Within the inner contour of the surface is covered with insulated floating material, made in the form of hollow spheres. The outer part of balls made of a hard shell with maximum antiadhesive properties, plastic or silicone coating, and these coatings are environmentally friendly. Application of hollow spheres on the surface of the reservoir significantly reduces not only evaporation but also the convective and radiative components of the heat exchange. The spherical shape gives free maneuvering the dredgers and drag. Required number of bulbs 1 m2the water surface is determined by the formula:

;;

where ks- coefficient taking into account the increase in free water surface while maneuvering vessels and dredges in the area, zapolnenie the balls;

kt- temperature coefficient that takes into account the dependence on the diameter of the balls; ΔS - increment area, m2; d - the diameter of the balls, m; π=3,14.

Example: for lane area of 600 m2the required number of balls with a diameter of 0.1 m is 76 433 units

The way education lane in winter, including laying on the surface of the water heat insulating material in the form of balls, wherein the balls are hollow with hard plastic or silicone shell, and the required number of balls per 1 m2the water surface is determined by the formula:

where ks- coefficient taking into account the increase in free water surface while maneuvering vessels and dredges in the area, filled with balls, m2;

kt- temperature coefficient that takes into account the dependence on the diameter of the balls;
ΔS is the increment of area, m2;
d is the diameter of the balls, m; π=3,14.



 

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