FIELD: mining; heat protection of workings from formation of ice. SUBSTANCE: device consists of reinforcing fabric suspended from support and heating system of conductors and electric cells. Heating elements are made of several turns of flexible heating cable. Each strand of turn has length corresponding to height of heated section. Distance between separate strands reduces proportional to square of the distance measuring from line passing through center to heated section. Turns of heating cable may be covered with heat-insulating shield attached to tunnel walls by pressing fasteners. Heat-insulating shield has narrowing lower part lowered into water-discharge trough. EFFECT: higher efficiency of heat protection of rock and support structural members. 2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DRAINAGE TRAY OF TRANSPORT TUNNELS | 2018 |
|
RU2687693C1 |
| METHOD FOR LOOSENING FROZEN ROCK | 1998 |
|
RU2143032C1 |
| DEVICE FOR ICE FULL-HOLE DRILLING | 1992 |
|
RU2012760C1 |
| APPARATUS FOR ELECTROTHERMAL DRILLING OF WELLS | 1991 |
|
RU2013513C1 |
| DEVICE FOR ELECTROTHERMAL HOLE DRILLING | 1991 |
|
RU2021465C1 |
| METHOD FOR DIRECTED HYDRAULIC FRACTURING OF ROCKS | 1994 |
|
RU2069261C1 |
| METHOD FOR REGULATION OF THERMAL CONDITIONS IN RAILWAY TUNNELS AT WINTER PERIOD | 1998 |
|
RU2134353C1 |
| ARTIFICIAL SUPPORT AND METHOD OF ITS CONSTRUCTION IN MINING OF STEEP BEDS | 1998 |
|
RU2147687C1 |
| ELECTROTHERMOMECHANICAL DRILLING METHOD AND APPARATUS | 1992 |
|
RU2038475C1 |
| COAL BRICK DRYING UNIT | 1994 |
|
RU2092755C1 |
