Rock-breaking efficiency of full-face rock tunnel boring machine (TBM) is closely related to the performance of the disc cutter and the characteristics of the rock mass. In the point of view of mesomechanics. the particle flow code (PFC) is used to establish a numerical model of the rock mass and the disc cutter. and the process of TBM disc cutter intrusion into the rock mass is analy... https://www.roneverhart.com/5-15P-ANGLE-PLUG-B-W-HUBBELL-HBL5266CA/