The three-dimension model for the rock-breaking mechanism of disc cutter andanalysis of rock-breaking forces  

作　　者：Zhao-Huang Zhang Fei Sun 

机构地区：[1]School of Energy,Power and Mechanical Engineering,North China Electric Power University102206 Beijing,China [2]School of Foreign Languages,North China Electric Power University102206 Beijing,China

出　　处：《Acta Mechanica Sinica》2012年第3期675-682,共8页力学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (51075147)

摘　　要：To study the rock deformation with three- dimensional model under rolling forces of disc cutter, by car- rying out the circular-grooving test with disc cutter rolling around on the rock, the rock mechanical behavior under rolling disc cutter is studied, the mechanical model of disc cutter rolling around the groove is established, and the the- ory of single-point and double-angle variables is proposed. Based on this theory, the physics equations and geometric equations of rock mechanical behavior under disc cutters of tunnel boring machine （TBM） are studied, and then the bal- ance equations of interactive forces between disc cutter and rock are established. Accordingly, formulas about normal force, rolling force and side force of a disc cutter are de- rived, and their validity is studied by tests. Therefore, a new method and theory is proposed to study rock- breaking mech- anism of disc cutters.To study the rock deformation with three- dimensional model under rolling forces of disc cutter, by car- rying out the circular-grooving test with disc cutter rolling around on the rock, the rock mechanical behavior under rolling disc cutter is studied, the mechanical model of disc cutter rolling around the groove is established, and the the- ory of single-point and double-angle variables is proposed. Based on this theory, the physics equations and geometric equations of rock mechanical behavior under disc cutters of tunnel boring machine （TBM） are studied, and then the bal- ance equations of interactive forces between disc cutter and rock are established. Accordingly, formulas about normal force, rolling force and side force of a disc cutter are de- rived, and their validity is studied by tests. Therefore, a new method and theory is proposed to study rock- breaking mech- anism of disc cutters.

关 键 词：Full face rock tunnel boring machine （TBM） Disc cutte Three-dimension model 

分 类 号：U455.31[建筑科学—桥梁与隧道工程] TG611[交通运输工程—道路与铁道工程]