Environmental Engineering Reference
In-Depth Information
Deaeration tube extends
past anchorage
Expansion anchorage
Expansion anchorage
Grout
Grout
Hollow core
Daeration tube
Grout tube
Cement collar seal
Grout tube
Cement collar seal
Bearing plate
Hard steel water
Bevel washers
Hexagon torque nut
Bearing plate
Hard steel water
Sealed
Air out
Spin in
rebar
Hexagon torque nut
Grout in
Grout in
Air out
(a)
(b)
(c)
FIGURE 9.119
Fully grouted rock bolts or anchors: (a) grouted solid expansion anchorage bolt and (b) hollow-core grouted
rock bolt. (a and b from Lang, T.A., Bull. Assoc. Eng. Geol., 9, 215-239, 1972. With permission.) (c) Rebar and
resin cartridges.
FIGURE 9.120
Loose granite gneiss blocks retained with rock bolts, and blocks of gneiss and a soft zone of schist retained
with bolts and concrete straps on natural slope (Joao Monlevade, M.G., Brazil). (Courtesy of Tecnosolo. S.A.)
 
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