Longwall mining system
Patent
·
OSTI ID:6501673
This mining system utilizes a row of roof support units in conjunction with a row of conveyor sections and a continuous mining machine which rides on the conveyor sections. Each roof support includes a primary support shield supported on a base by means of jacks and a secondary support shield telescopically mounted to the primary support shield and having a wall engagement portion at the outer end to provide bearing support for the secondary support shield by the wall rather than merely by cantilever support. Each support unit is connected to an associated conveyor unit by a ram for moving said units relative to each other. The mining machine includes a kerf cutting member for creating a continuous ledge at the junction of the longwall and roof for supporting the secondary support shield wall engagement portion.
- Assignee:
- M.A.T. Industries, Inc.
- Patent Number(s):
- US 4119346
- OSTI ID:
- 6501673
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mineral mining installation
Mineral mining installation
Mine roof support and method in longwall mining of thick mineral seams
Patent
·
Mon Dec 28 23:00:00 EST 1981
·
OSTI ID:5710159
Mineral mining installation
Patent
·
Mon Jan 23 23:00:00 EST 1984
·
OSTI ID:6843263
Mine roof support and method in longwall mining of thick mineral seams
Patent
·
Mon Jan 02 23:00:00 EST 1978
·
OSTI ID:5180746