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Publication of BE683538ApublicationCriticalpatent/BE683538A/xx
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
E21D9/005—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by forcing prefabricated elements through the ground, e.g. by pushing lining from an access pit
Landscapes
Engineering & Computer Science
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Mining & Mineral Resources
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Environmental & Geological Engineering
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Life Sciences & Earth Sciences
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General Life Sciences & Earth Sciences
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Geochemistry & Mineralogy
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Geology
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Bulkheads Adapted To Foundation Construction
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Underground Structures, Protecting, Testing And Restoring Foundations
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