FIELD: mining.
SUBSTANCE: pedestal for supporting reusable development workings includes cylindrical wooden-and-concrete blocks installed on each other at the height equal to thickness of the extracted formation, made of wooden posts installed in metal casing and fixed in casing by means of solidifying solution. Pedestal is equipped with additional composite block that includes hollow cylindrical block consisting of two segments connected with a clamp, solid cylindrical block, gasket arranged between rear segment and cylindrical wooden-and-concrete block, and pneumatic cylinder.
EFFECT: improving pedestal operating efficiency owing to creating prestressing at its being installed between side rocks.
7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PROTECTION METHOD OF REUSABLE DEVELOPMENT WORKINGS | 2011 |
|
RU2472935C1 |
| METHOD TO FIX OPENINGS | 2009 |
|
RU2439328C2 |
| METHOD FOR DEVELOPING ENTRY PROTECTION | 2006 |
|
RU2315182C1 |
| ROOF SUPPORT FOR SAFETY OF ENTRY WORKINGS | 0 |
|
SU1064004A1 |
| METHOD TO SAFEGUARD DEVELOPMENT OPENINGS | 2010 |
|
RU2441164C1 |
| METHOD OF TIMBERING OF DEVELOPMENT EXCAVATIONS | 2007 |
|
RU2338880C1 |
| SAFETY SUPPORT FOR DEVELOPMENT WORKINGS | 0 |
|
SU1262048A1 |
| SUPPORT FOR PROTECTION OF DEVELOPMENT WORKINGS | 1996 |
|
RU2112882C1 |
| SUPPORT FOR PROTECTION OF DEVELOPMENT WORKINGS | 2013 |
|
RU2535575C2 |
| METHOD OF PROTECTING A DEVELOPING WORKING | 0 |
|
SU1301977A1 |
