Intercity Rail Assembly Of Large-diameter Shield Machine Research Of New Technologies

With the development of underground space, shield technology has been widely used insubways, tunnels, pipelines and other municipal projects in the field of soft soil layer. Thepast thirty years, Since the EPB, Slurry balance, shield tail seal, shield originating andreceiving a series of technical problems to solve, making the shield technology has been rapiddevelopment. Ground transportation increasingly crowded, underground facilities increasinglydense, making the project site is not easy to ensure. Affected underground structures, makingthe tunnel diameter increased, length becomes longer and longer. Shield tunnel diameterincreased, faced with the problem of transportation shield machine assembly. Solve theassembly transportation problems; they are also facing the problem of tunnel boring machineassembly. Due to poor construction environment, large shield assembly also caused somedifficulty. Shield tunnel length increase of shield machine performance requirements areincreasing. Shield tunneling is not receding. Shield segment diameter less than the outerdiameter. If the shield machine back, you must remove the concrete pieces body that havebeen assembled. It is very dangerous. Therefore, the pre-Shield tunneling work is veryimportant.Our innovative Shield tunneling technology, while neglecting an important part of thedecision shield machine performance-TBM assembly construction techniques. Only strictlycontrol the quality of the shield machine assembly in order to deal with the risk oflarge-diameter Shield tunneling. TBM performance to ensure that it runs properly. TBMassembly including transportation, lifting, positioning, bolting, welding, testing and other keyprocesses. TBM heavy, blockmore,it is verydifficult to assemble. In the same project, evenspend a lot of time, manpower, material resources, have not reached satisfactory results.Therefore, to ensure the shield machine assembly quality and performance, and strive tocreate the greatest benefits in the shortest possible time. The topic for the shield machineassembly techniques are discussed, developed a highly efficient large tunnel boring machineassembly construction of new technologies.This topic through engineering examples to Φ8780mm shield machine for the study.Decomposition of all aspects of tunnel boring machine assembly. For quality and safety,schedule assurance, cost control several aspects of assembly technology research. Integratetheory with practice, summed up a set of advanced, easy to operate, guiding significance forlarge application research topic.