EROSION-CONTROL DAM AND ITS CONSTRUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an erossion-control dam having long-term expandability after construction, while inexpensively securing safety in the construction, in work of a short period.;SOLUTION: A construction device 30 of a column body is arranged on an existing column body 10, and afterwards, a new column body 10 is driven in the ground G by the construction device 30 of the column body. The column body 10 is constituted in a row shape by successively extending forward, and the driven column bodies 10 and 10 are connected by a connecting material 13 when necessary. A hollow part 10a capable of inserting an auxiliary column body 11 of the column body 10 is also constituted, and the auxiliary column body 11 is inserted into the hollow part 10a, and is fixed to the column body 10, to thereby heighten the height of the column body 10.;COPYRIGHT: (C)2006,JPO&NCIPI