Method of lining a vertical mine shaft with concrete

Patent · Thu Jan 01 00:00:00 EST 1981

OSTI ID:863898

Eklund, James D ^[1]; Halter, Joseph M ^[2]; Rasmussen, Donald E ^[3]; Sullivan, Robert G ^[2]; Moffat, Robert B ^[4]

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1. Mattawa, WA
2. Richland, WA
3. Spokane, WA
4. Federal Way, WA

The apparatus includes a cylindrical retainer form spaced inwardly of the wall of the shaft by the desired thickness of the liner to be poured and having overlapping edges which seal against concrete flow but permit the form to be contracted to a smaller circumference after the liner has hardened and is self-supporting. A curb ring extends downwardly and outwardly toward the shaft wall from the bottom of the retainer form to define the bottom surface of each poured liner section. An inflatable toroid forms a seal between the curb ring and the shaft wall. A form support gripper ring having gripper shoes laterally extendable under hydraulic power to engage the shaft wall supports the retainer form, curb ring and liner until the newly poured liner section becomes self-supporting. Adjusting hydraulic cylinders permit the curb ring and retainer form to be properly aligned relative to the form support gripper ring. After a liner section is self-supporting, an advancing system advances the retainer form, curb ring and form support gripper ring toward a shaft boring machine above which the liner is being formed. The advancing system also provides correct horizontal alignment of the form support gripper ring.

• Research Organization: Battelle Memorial Institute, Columbus, OH (United States)
• DOE Contract Number: AC06-76RL01830
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4270876
• OSTI ID: 863898
• Country of Publication: United States
• Language: English

Related Subjects

method
lining
vertical
mine
shaft
concrete
apparatus
cylindrical
retainer
form
spaced
inwardly
wall
desired
thickness
liner
poured
overlapping
edges
seal
flow
permit
contracted
circumference
hardened
self-supporting
curb
extends
downwardly
outwardly
bottom
define
surface
section
inflatable
toroid
forms
support
gripper
shoes
laterally
extendable
hydraulic
power
engage
supports
newly
adjusting
cylinders
properly
aligned
relative
advancing
advances
boring
machine
formed
provides
correct
horizontal
alignment
bottom surface
wall supports
properly aligned
spaced inwardly
extends downwardly
hydraulic cylinders
form support
desired thickness
hydraulic cylinder
mine shaft
/405/425/