Yielding head for mine support

Details Yielding head for mine support Yielding head for mine support

1996-12-06

1998-08-11

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

4052596, 405288, E21D 2102

Patent

active

057918236

ABSTRACT:
A yielding head for reducing the need to recondition a rock mass. The yielding head includes a mine hole cradle and a longitudinally movable bar therein. The bar, which is connected to an extension bolt, is registered with a collapsible bubble serrated yielding element circumscribing the bar. As the rock mass is displaced the bar is drawn into the mine hole. The yielding element absorbs the stress on the bar in a controlled manner.

REFERENCES:
patent: 4156236 (1979-05-01), Conkle
patent: 4382719 (1983-05-01), Scott
patent: 4560305 (1985-12-01), Powondra
patent: 4954018 (1990-09-01), Gauna
patent: 5375946 (1994-12-01), Locotos
patent: 5387060 (1995-02-01), Locotos

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