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International Journal of Mining and Geo-Engineering، جلد ۵۰، شماره ۲، صفحات ۱۸۳-۱۸۸
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عنوان انگلیسی NUMERICAL MODELLING OF TUNNELLING INDUCED GROUND DEFORMATION AND ITS CONTROL
چکیده انگلیسی مقاله Tunnelling through cities underlain by soft soil, commonly associated with soil movement around the tunnels and subsequent surface settlement. The predication of ground movement during the tunnelling and optimum support pressure could be based on analytical, empirical or the numerical methods. The commonly used Earth pressure balance (EPB) tunneling machines, uses the excavated soil in a pressurised head chamber to apply a support pressure to the tunnel face during excavation. This face pressure is a critical responsibility in EPB tunnelling because as the varying pressure can lead to collapse of the face. The objective of the present study is to evalute the critical supporting face pressure and grout pressure by observing the vertical deformation and horizontal displacement of soil body during tunneling. The face pressure and grout pressures were varied to see how they might influence the magnitude of surface settlements/heave. A numerical model using PLAXIS-3D tunnel has been developed to analyse the soil movement around the tunnel that includes various geotechnical conditions. The ground surrounding the tunnel found to be very sensitive to the face pressure and grout pressure in terms of surface settlement and collapse of the soil body.
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نویسندگان مقاله v b مجید | v b
iit madras

abite adugna |
govt of ethiopia

نشانی اینترنتی http://ijmge.ut.ac.ir/article_59827_295917a610e5dac4c874457c7b0cf5e3.pdf
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