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A lot of machines are working at the construction site of a huge dam.
A roller with protuberances that compacts soft soils such as clay.
A large roller vibrates to compact the gravel and make an embankment of the filling dam.
A dump truck as big as a house. Transport excavated soil and sand so on.
It has features of having an articulation between the driver's seat and the load platform, and six tires. It can travel over bumpy areas better than heavy dump trucks.
Push the excavated soil and sand to collect them in one place and level the soil.
It is a machine that creates joints to prevent cracks in concrete. Grooves are made by applying pressure to the steel plate and vibrating it.
Excavate soil and sand, and load collected rocks with a bulldozer onto a dump truck.
A machine with a brush attached to the tractor scrapes away the fine particles of cement that float after the concrete is poured.
A machine for drilling holes in hard rock. By pouring the gunpowder into the hole and blasting it, you can safely dig through hard ground.
Two drums are rotated to cut the bedrock. Used by attaching it to the tip of the backhoe.
A bar-shaped vibrator can be used to compact stiff-consistency concrete in a short time.
The tip chisel is vibrated to crush bedrock and shape the slope.
Obayashi-Dam Innovative Construction Technology
About dam
Live videos of dam construction
Completed records of dam construction