Small-diameter vertical shafts constructed in the shallow space of
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Small-diameter vertical shafts constructed in the shallow space of steep mountainous areas - ScienceDirect
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PDF) Vertical shaft machines. State of the art and vision
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Proposed vertical shaft excavation.
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Working space of small diameter caisson type pile.
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a) Plan layout, (b) cross-section of the vertical shaft (turan 2013).
Setting residual main rebar.
PDF) Vertical shaft machines. State of the art and vision
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