oa Civil Engineering = Siviele Ingenieurswese - Du Toitskloof - the main tunnel contract

Volume 30, Issue 4
  • ISSN : 1021-2000



The construction methods employed and the specialized equipment used on the project are descriptionbed. Details of the design aspects and the construction of the soft ground section to the, second tunnel are provided. An alternative technique was used: 'multiple face' excavation supported by vacuum drainage of the ground water table.

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