Tele-Operation Feasibility Study On Earth Pressure Balanced Hield

Monitoring in control room is widely used method in construction of earth pressure balance shield machine (EPB). However, It has some shortcomings as adverse circumstances and insecurity, etc., Constructer never get into the construction site, such as the deep seabed and micro-tunnels. The tele-operation technology development participation for contradictions in shield construction has provided the new way. Tele-operation will lead to unfavorable factors for system such as delay and interference. For EPB high cost and the construction cost of large, it is a considerable risk of economic and constructer to solve such problems use experimental methods. Therefore, the purpose of this research is to develop system modeling and simulation study for EPB with safe, economical, fast and more effective way. Findings of the study achieved the tele-operation of EPB to provide a reference.According to thrust hydraulic system in EPB, this paper first analyzes the structure composition of electric and hydraulic. Graphical modeling approach is based on AMESim. Models of all aspects for hydraulic control system are connected in turn. Obtained the system parameters accorded to the literature and formula derivation. Simulated the condition of tele-operation and analyzed the characteristic of delay in AMESim, the control of pressure and flow for the system has been analyzed by AMESim. The results show that system is stable under certain conditions. Findings of the study achieved the tele-operation of EPB to provide a reference. All function can be depicted without any programs. On the other hand, efficiency and accuracy of simulation of the hydraulic control system are greatly improved.