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Author: WikiMatrix
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English[en]
A mixed-face Earth Pressure Balance Shield Tunnel Boring Machine (TBM) was designed and built in Germany by Herrenknecht specifically to cope with complex underground conditions and was the first such machine employed in South Africa.
Chinese[zh]
混合面土壓平衡盾構隧道掘進機是由海瑞克(英语:Herrenknecht)在德國設計和建造的,專門用於應對複雜的地下條件,為南非第一台此類機器。