patent references
Overview of TBM
Construction method
efficency comparison
engineering efficency comparison
 
동양산업
 

L : The distance being able to inflate until the disc cutter mounted to the most edge of cutter head reaches to the cutter running distance life


 
 

The distance runnable over the edge of cutter (both surface beneath the edge) until the disc cutter reaches to the Max. abrasion volume


 
 

The disc cutter's penetration volume to the edge of cutter (both surface beneath the edge) during one rolling time of cutter head