A load-bearing, pressurized-fluid column apparatus and method for
supporting a load or mine ceiling with respect to a support surface or
mine floor includes an elongated, flexible sleeve and bladder retain a
substantially incompressible liquid. The sleeve and bladder have a
collapsed and an expanded configuration. In the collapsed configuration,
the sleeve and bladder are not filled, and have a first, shorter length.
In the expanded configuration, the sleeve and bladder are filled with the
liquid, and have a second, longer length sized to extend to and between
the load and the support surface. A valve allows the liquid to be added
and prevents escape of the liquid. A base can seal a lower end of the
sleeve, and can be disposed on the support surface. A cap can seal an
upper end of the sleeve, and can be capable of abutting the load.