"An Optimization Methodology of Cutter-Spacing for Efficient Mechanical" by Kanglei Song, Haiqing Yang et al.
Cutter spacing is one of the important mechanical parameters that influence the cutting efficiency of tunnel boring machines (TBMs). A methodology was developed to optimize the cutter-spacing for efficient mechanical breaking, which improves the cutting efficiency of the jointed rock mass. In the beginning, 18 indentation tests were carried out on jointed granite specimens by varying cutter spacing, joint spacing, and joint set orientation, respectively. The cracking process of the jointed rock mass was captured by using a digital imaging correlation system clubbed with high-speed photography ...
Source: uow.edu.au