Full face rock tunnel boring machine（TBM） has been widely used in hard rock tunnels, however, there are few published theory about cutter-head design, and the design criteria of cutter-head under complex geological ...Full face rock tunnel boring machine（TBM） has been widely used in hard rock tunnels, however, there are few published theory about cutter-head design, and the design criteria of cutter-head under complex geological is not clear yet. To deal with the complex relationship among geological parameters, cutter parameters, and operating parameters during tunneling processes, a cutter-head load model is established by using CSM（Colorado school of mines） prediction model. Force distribution on cutter-head under a certain geology is calculated with the new established load model, and result shows that inner cutters bear more force than outer cutters, combining with disc cutters abrasion; a general principle of disc cutters＇ layout design is proposed. Within the model, the relationship among rock uniaxial compressive strength（UCS）, penetration and thrust on cutter-head are analyzed, and the results shows that with increasing penetration, cutter thrust increases, but the growth rate slows and higher penetration makes lower special energy（SE）. Finally, a fitting mathematical model of ZT（ratio of cutter-head torque and thrust） and penetration is established, and verified by TB880 E, which can be used to direct how to set thrust and torque on cutter-head. When penetration is small, the cutter-head thrust is the main limiting factor in tunneling; when the penetration is large, cutter-head torque is the major limiting factor in tunneling. Based on the new cutter-head load model, thrust and torque characteristics of TBM further are researched and a new way for cutter-head layout design and TBM tunneling operations is proposed.展开更多
针对设计和研究人员快速构建TBM刀盘有限元模型的需求,采用APDL与VC++可视化编程技术相结合的方法,在编制刀盘建模APDL程序的基础上,开发友好的人机交互界面,实现了VC++与ANSYS之间的参数传递,建立了一套可视性良好的TBM刀盘有限元参数...针对设计和研究人员快速构建TBM刀盘有限元模型的需求,采用APDL与VC++可视化编程技术相结合的方法,在编制刀盘建模APDL程序的基础上,开发友好的人机交互界面,实现了VC++与ANSYS之间的参数传递,建立了一套可视性良好的TBM刀盘有限元参数化建模系统。以某型号直径4 m TBM刀盘为例构建有限元模型,验证了该系统良好的实用性和可靠性。通过对此建模系统的开发,可实现TBM刀盘数字化建模、分析等全套设计。展开更多
基金Supported by National Natural Science Foundation of China(Grant No.51275339)National Basic Research Program of China(973 Program,Grant No.2013CB035402)
文摘Full face rock tunnel boring machine（TBM） has been widely used in hard rock tunnels, however, there are few published theory about cutter-head design, and the design criteria of cutter-head under complex geological is not clear yet. To deal with the complex relationship among geological parameters, cutter parameters, and operating parameters during tunneling processes, a cutter-head load model is established by using CSM（Colorado school of mines） prediction model. Force distribution on cutter-head under a certain geology is calculated with the new established load model, and result shows that inner cutters bear more force than outer cutters, combining with disc cutters abrasion; a general principle of disc cutters＇ layout design is proposed. Within the model, the relationship among rock uniaxial compressive strength（UCS）, penetration and thrust on cutter-head are analyzed, and the results shows that with increasing penetration, cutter thrust increases, but the growth rate slows and higher penetration makes lower special energy（SE）. Finally, a fitting mathematical model of ZT（ratio of cutter-head torque and thrust） and penetration is established, and verified by TB880 E, which can be used to direct how to set thrust and torque on cutter-head. When penetration is small, the cutter-head thrust is the main limiting factor in tunneling; when the penetration is large, cutter-head torque is the major limiting factor in tunneling. Based on the new cutter-head load model, thrust and torque characteristics of TBM further are researched and a new way for cutter-head layout design and TBM tunneling operations is proposed.
文摘针对设计和研究人员快速构建TBM刀盘有限元模型的需求,采用APDL与VC++可视化编程技术相结合的方法,在编制刀盘建模APDL程序的基础上,开发友好的人机交互界面,实现了VC++与ANSYS之间的参数传递,建立了一套可视性良好的TBM刀盘有限元参数化建模系统。以某型号直径4 m TBM刀盘为例构建有限元模型,验证了该系统良好的实用性和可靠性。通过对此建模系统的开发,可实现TBM刀盘数字化建模、分析等全套设计。
