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
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD TO CREATE ICE HOLE IN WINTER PERIOD | 2012 |
|
RU2493321C1 |
| DEVICE FOR PROTECTING LANE CREEPERS AND DREDGERS FROM FREEZING | 2009 |
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| WATER SUPPLY FOR DREDGING | 2012 |
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|
SU987045A1 |
