FIELD: mining industry. SUBSTANCE: this is used for supporting mine workings. Support beam has straightline bottom and flanges located symmetrically to longitudinal axis of beam and having flat surfaces. Made between bottom and flanges symmetrically to longitudinal axis of beam are V-shaped grooves. Surface of flanges is located in one plane with bottom surface. There are holes in bottom of beam located along axis of symmetry, and positioned above each hole is cover strip with matching holes. Edges of strip are bent so as to embrace flanges. EFFECT: high efficiency. 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ANCHOR SUPPORT | 1995 |
|
RU2083843C1 |
| METHOD FOR DEVELOPMENT OF FLAT AND INCLINED SEAMS OF MINERALS | 1995 |
|
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| MINING OF GENTLY DIPPING AND INCLINED COAL SEAMS LEADING UNDER OVERBURDEN | 1995 |
|
RU2097559C1 |
| SECTION-TYPE SUPPORT | 0 |
|
SU1627713A1 |
| YIELD ASSEMBLY OF MINE WORKING SUPPORT | 0 |
|
SU1629554A1 |
| FRAME SUPPORT OF SPECIAL ROLLED SHAPE | 0 |
|
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| METAL YIELDING FRAME SUPPORT FROM MINE SPECIAL CHANNELS TO SUPPORT MINE OPENING AT UNDERGROUND DEVELOPMENT OF MINERAL DEPOSITS | 2009 |
|
RU2429348C2 |
| YIELDING LOCK OF SPECIAL-PROFILE STOCK | 0 |
|
SU1461973A1 |
| CIRCULAR SUPPORT OF EXCAVATION AND METHOD FOR ITS SETTING | 2008 |
|
RU2370652C1 |
| SUPPORT YIELDING UNIT FROM SPECIAL SECTION | 0 |
|
SU1716149A2 |
