| 摘要 |
PURPOSE:To greatly save the amount of concrete to be used by a method in which a continuous underground wall for water-sealing and sheathing purposes is contructed in the ground with deep water-permeable layer by palcement of soil concrete for the area lower than the depth of pit excavation and also by placement of concrete for the area higher than the depth of pit excavation. CONSTITUTION:In constructing a continuous underground wall in the ground with a thick water-permeable layer 1, a pit 3 is excavated to a water-impermeable layer 2, and an iron bar cage is inserted into the pit 3 as needed. Soil concrete 5 is placed in the area lower than the excavated bottom 4 of the lower layer with the intention of sealing water of small pressures, and also concrete 6 is placed in the area above the soil concrete 5 to construct a sheathing and water-sealing wall. |
