Evaluation of Cutting Performance of a TBM Disc Cutter
The brittleness of rock is known to be an important property that affects the fragmentation characteristics of rock in mechanized rock cutting. As the interaction between the cutting tool and the rock (i.e., cutter forces, cutting efficiency, s/p ratio, and abrasivity) during mechanical rock cutting is strongly influenced by the characteristics of rock fragmentation, the cutting tools (i.e
Evaluation of cutting efficiency during TBM disc cutter excavation within a Korean granitic rock using linear-cutting-machine testing and photogrammetric measurement - ScienceDirect Tunnelling and Underground Space Technology Volume 35, April 2013, Pages 37-54
Systematic Performance Evaluation of Shield TBM Cutters for
Cutter performance evaluation is important for shield TBM during the design and refurbishment stage. To face the challenges of choosing the proper cutters for tunneling in complex condition, according to the concept of parameter profile analysis, a systematic evaluation method was proposed.
As the main cutting tool of Tunnel Boring Machine (TBM) for rock-breaking, the rock-breaking efficiency of TBM disc cutters directly affects the TBM’s boring speed, which in turn affects the overall progress of the tunnelling project.
Comparison Study on the Rock Cutting Characteristics of Disc
To improve the excavation efficiency of Tunnel Boring Machines (TBMs), the free-face-assisted rock cutting method induced by TBM disc cutter (FM) was explored and the differences between the FM and the conventional Cutting Method (CM) were also compared based on a series of rock cutting tests.
Linear cutting machine (LCM) is usually used for a full size test to evaluate the cutting performance. This paper presents the results of LCM tests carried out under various cutting...
Study on Rock Cutting Mechanism and Efficient Shield
The change of disc-cutter cutting force and rock boreability index were analyzed, and some suggestions were proposed to fulfill the safe and efficient tunneling of the shield machine in mixed ground conditions.
This paper presents the results of LCM tests carried out under various cutting conditions to assess the cutting performance of a TBM disc cutter for granitic rock in Korea. In LCM test,...
Design Optimization of TBM Disc Cutters for Different
To fully understand the characteristics and performance of TBM cutters, a comprehensive list of performance parameters were investigated, including maximum equivalent stress and strain, specific energy and wear life which were closely related to the cutting forces and profile geometry of the cutter rings.
[2] Ma H, Gong Q, Wang J et al. 2016 Linear cutting tests on effect of confining stress on rock fragmentation by TBM cutter Rock Mechanics and Engineering 35 346-355. Google Scholar [3] Liu J, Cao P, Fan J et al. 2017 A study on rock breaking characteristics and efficiency with TBM cutters in a biaxial state Rock and Soil Mechanics 38 1541-1549
