FIELD: mining. SUBSTANCE: method for testing the hydraulic props of mine support includes dynamic action on prop due to delivery of nonelastic impact with mass corresponding to prop bearing capacity with dynamic- response factor not in excess of two. EFFECT: higher efficiency. 1 dwg
Title | Year | Author | Number |
---|---|---|---|
HYDRAULIC PROP | 1993 |
|
RU2066764C1 |
HYDRAULIC PROP WITH PROTECTION FROM DYNAMIC LOADS | 1999 |
|
RU2150005C1 |
POWER MINE SUPPORT UNIT | 0 |
|
SU911039A1 |
HYDRAULIC PROP | 1987 |
|
RU2066763C1 |
POWER ROOF SUPPORT UNIT | 0 |
|
SU945468A1 |
HYDRAULIC PROP | 0 |
|
SU1789716A1 |
STAND FOR TESTING HYDRAULIC PROP OF SHAFT LINING | 0 |
|
SU1076804A1 |
JUNCTION SUPPORT | 0 |
|
SU1312177A1 |
POWER ROOF SUPPORT UNIT | 0 |
|
SU1067220A1 |
METHOD OF PROTECTING GROUND SUPPORT HYDRAULIC PROP FROM DYNAMIC LOADS | 2000 |
|
RU2177549C1 |
Authors
Dates
1996-02-20—Published
1992-11-20—Filed