| 摘要 |
PURPOSE:To eliminate the needs for the conventional grouting work by a method in which the ground is excavated, reinforcing bars are arranged along the wall of the excavated ground, and concrete is sprayed onto the wall of the excavated ground to a thickness enough to bury the reinforcing bars to form a wall. CONSTITUTION:The ground 1 is excavated to match the size of an underground tank and given reinforcing bars 2 are arranged along the wall of the excavated space A. Concrete 4 is sprayed onto the wall to a thickness enough to bury the bars 2 by a spraying machine 3 to construct a concrete wall B. After the completion of the curing of the wall B, the ground 1 is excavated for the next stage concrete structure. Since the needs for repairing work for joints such as grouting can be eliminated, the cost and period of construction work can be curtailed.
|
