Environmental Engineering Reference
In-Depth Information
Wire
Tail fin
Nonreturn
valve
Dead load
Sample
cylinder
FIGURE 2.72
Harpoon-type gravity corer.
Catcher
Wire clamp
Release
mechanism
Freefall
loop
Weight stand
Piston stop
Core barrel
Trip
wire
Threaded joint
Plastic liner
Piston
Nose cone
(core cutter)
FIGURE 2.73
Schematic diagram of a typical piston-type gravity corer. (From USAEC
1996, Pub. EM 1110-1-1906. With permission.)
Pilot corer or
pilot weight
