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Layout optimization for non-equidistant thrust system of tunneling machine based on geometric progression under mixed ground
Science Progress ( IF 1.906 ) Pub Date : 2019-09-16 , DOI: 10.1177/0036850419874988
Kongshu Deng; Lu Zeng; Yicheng Ding; Guoqing Wang

For the characteristics of allowing constructing tunnels in adverse geological conditions including difficult ground conditions as well as tunnels in vulnerable urban areas, tunnel boring machine (TBM) has well-established tunnel construction method recently.1,2 When a tunnel is being excavated, the following two steps in the shield machine are conducted alternatively: the tunneling of the TBM by all jacks in the thrust system applying active forces on the rear segments that simultaneously carries out the excavation of the soil and rock at tunneling face by the rotating cutter-head, and the installation of a segment ring of the shield lining system with simultaneous void grouting at the tail while the machine stops working.3 Therefore, the design of the thrust system is playing an important role in building a high-quality tunnel with great seal performance.4
更新日期:2020-04-10

 

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