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Several tunnel malfunctions excavation.of the shield tunneling machine(STM)caused by structural interference have been encountered in actual This paper required is focusing workspaces on providing an effective method to avoid the structural main interference based on making the reachable and the of up the to thrust system match pose each other.The of structure of the thrust mechanism is the analyzed,are and coordinate systems are built describe the and workspace out the the thrust mechanism.Constraint conditions derived and the formulation Meanwhile,model of each constraint condition is carried to facilitate analysis of the reachable on workspace analysis of thrust The mechanism.a reachable workspace determination workspace algorithm is introduced based interval based method.mathematical for determining the required of the thrust mechanism is presented on the analysis these of the process by when the STM excavates along a the specific tunnel axis.Two and applications the are included to show how to avoid problems based choosing reasonable matching.parameters of designed tunnel axis key structural parameters of the thrust mechanism on workspace
Several tunnel malfunctions excavation. Of the shield tunneling machine (STM) caused by structural interference have been encountered in actual This paper required is focusing workspaces on providing an effective method to avoid the structural main interference based on making the reachable and the of up the to thrust system match pose each other. of structure of the thrust mechanism is the analyzed, are and coordinate systems are built describe the and workspace out the the thrust mechanism. Constraint conditions derived and the formulation Meanwhile, model of each constraint condition is carried to facilitate analysis of the reachable on workspace analysis of thrust The mechanism. a reachable workspace determination workspace algorithm is introduced based interval based method. a the specific tunnel axis. Two and applications the are included t o show how to avoid problems based choice reasonable matching .parameters of designed tunnel axis key structural parameters of the thrust mechanism on workspace