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Inspecting Stablity of DSM method with Grouting on Tunnel Face using Chamber Test and Numericlal Analysis
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 Title & Authors
Inspecting Stablity of DSM method with Grouting on Tunnel Face using Chamber Test and Numericlal Analysis
Kim, Young-Uk; Park, Young-Bok; Kim, Li-Sak; Kim, Nak-Kyeong;
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In urban areas, underground tunnel construction sites have spread widely to accommodate rapidly increasing traffic volume along with a high-degree economic growth. Earth tunneling might be adapted frequently for the underground space securing, and various tunneling methods have been developed to stabilize the tunnel face and crown. Among them, the DSM (divided shield method) is gaining popularity for its enhanced stability and construction efficiency. This method has its foundation from the Messer Shield method, which is one of the trenchless special tunneling methods. This study examined the effects of face reinforcement on construction the sequence through a large scale soil chamber test and numerical analyses. The chamber has a size of a 1/2 scale of the real tunnel. Surface settlements were measured according the tunneling process. Commercially available software, MIDAS GTS, was used for numerical analysis and its result was compared with the values obtained from the chamber test. The results of the study show that both settlements of the embanked soils and the stress of the tunnel girder are located within the safe criteria. Overall, this study provides basic data and the potential of using a reinforced tunnel face to enhance DSM applications.
Chamber test;DSM;MIDAS GTS;Numerical analysis;Trenchless tunneling;
 Cited by
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