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METHOD FOR CONSTRUCTING SUBTERRANEAN STRUCTURAL ENGINEERING CONSTRUCTION BUILDABLE FROM PARTICULARLY LINEAR REINFORCED CONCRETE ENGINEERING STRUCTURE OF CLOSED SECTION E.G. TUNNEL IN GRANULAR SOIL CONTAINING GROUNDWATER
METHOD FOR CONSTRUCTING SUBTERRANEAN STRUCTURAL ENGINEERING CONSTRUCTION BUILDABLE FROM PARTICULARLY LINEAR REINFORCED CONCRETE ENGINEERING STRUCTURE OF CLOSED SECTION E.G. TUNNEL IN GRANULAR SOIL CONTAINING GROUNDWATER