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METHOD FOR CONSTRUCTING UNDERGROUND DITCH, AND MATERIAL FOR CONSTRUCTING UNDERGROUND DITCH
METHOD FOR CONSTRUCTING UNDERGROUND DITCH, AND MATERIAL FOR CONSTRUCTING UNDERGROUND DITCH
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机译：地下沟的施工方法以及地下沟的施工材料
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摘要
PROBLEM TO BE SOLVED: To provide a method for constructing an underground ditch capable of forming a narrow underground ditch easily.;SOLUTION: The reference drawing shows an assembly perspective view of an underground ditch material 1. The underground ditch material 1 is mainly composed of a pair of earth retaining members 3, an intermediate member 5 and the like. The earth retaining members 3 are plate-like members, and for example are steel. A rib 7 is joined on one surface of the earth retaining member 3. The intermediate member 5 is a plate-like member, and for example is steel. The substantially whole surfaces of both sides of the intermediate member 5 are flat, and a head 5a is provided on an upper end of the intermediate member 5 so that the upper end protrudes in a thickness direction. A protruding amount of the head 5a from both sides of the intermediate member 5 is more than thickness of the earth retaining member 3. The underground ditch material 1 is assembled by disposing the earth retaining members 3 so that each formed surface where the rib 7 is arranged outside, and by inserting the intermediate member 5 between a pair of the earth retaining members 3.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2018,JPO&INPIT
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