UNDERGROUND DIAPHRAM WALL BY BENOTO METHOD AND HIGH-PRESSURE GROUTING METHOD AND CONSTRUCTION THEREFOR

摘要

PURPOSE: An underground diaphram wall by a benoto method and a high-pressure grouting method is provided to minimize a change of water pressure by improving imperviousness. CONSTITUTION: The underground diaphram wall by a benoto method and a high-pressure grouting method comprises several benoto columns(1) installed on the ground at regular intervals along the excavation boundary(C), reinforced ground columns(2) forming an impervious wall by reinforcing the ground between the benoto columns(1) by a high-pressure grouting method to be connected with the benoto columns(1), an inner elevated part and an outer elevated part formed by developing the reinforced ground columns(2) in the wedge shape to transfer earth pressure and water pressure to the benoto columns(1) and to heighten adhesive pressure of an adhesive part when excavating one side of the excavation boundary(C), and an adhesive part of the benoto column(1) and the reinforced ground column(2).