patent references
Overview of TBM
Construction method
efficency comparison
engineering Overview of TBM
 
동양산업
The excavation method of TBM is divided into "Cutter" which uses the rolling force of a button cutter and "Crusher" which the rolling and compressive force of disc cutter. For the weatherd rocks and soft rocks, "Cutter" type is used for more than 300-800kg/㎠ compressive strength and "Crusher"type is used for more than 1000kg/㎠ compressive strength. Recently, it is developed for "Crusher" to apply to various geological features.

Each cutter arranged and mounted on the front of cutter head uses different mount and cutter according to the mounting location. If it is rolled with the compressive force, tee edge of disc cutter gives vertical force to the digging sectional When that force is bigger than the strength of rock, it is crushed.
The disc cutter arranged and mounted precisely by the rolling of cuter head crushes a rock from the outside. As the free surface is made on the surface of rock in consecutive order, the drilling capability is increased double.
According to the cutter space and penetration depth, it is crushed as aggregate status of 60-80mm width and 10-40mm thickness.

Each cutter arranged and mounted on the front of cutter head uses different mount and cutter according to the mounting location. If it is rolled with the compressive force, te edge of disc cutter gives vertical force to the digging sectional When that force is bigger than the strength of rock, it is crushed.

The disc cutter arranged and mounted precisely by the rolling of cuter head crushes a rock from the outside. As the free surface is made on the surface of rock in consecurive order, the drilling capability is increased double.
According to the cutter space and penetration depth, it is crushed as aggregate status of 60-80mm width and 10-40mm thickness.