Turnaround worker - Orikaeshikou

…(4) Methods for preventing the collapse of the back slope: Standing gabion work, which sets up gabions on the back slope to cover it, pile-driving and stacking dohyo work, which drives piles into the back slope and places a sumo bale in the middle, dohyo tuyere work, which piles up the sumo bale on the back slope, and tsuchimawashi work. (5) Methods for preventing cracks: Folding work, which inserts bamboo near both shoulders of a crack on the top edge and bends it to connect them (Fig. g), holding back work when the crack extends from the top edge to the back slope, trivet sewing work, which drives several bamboo poles into the crack line and binds it, and basket stopper work, which drives piles into the back slope in a diamond shape and sews them with bamboo and iron wire. Although there have been changes in the materials used for these methods, such as the bales and mats being made of vinyl, the bamboo being replaced by iron wire, iron bars, vinyl pipes, and the boards being made of concrete, there have been almost no new developments in the methods themselves, and they are the accumulation of old experience. …

*Some of the terminology explanations that refer to "turnaround work" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…(4)裏法崩壊に対する工法　裏法面に蛇籠を立てて被覆する立て蛇籠工，裏法面に杭を打ち並べ中詰に土俵を入れる杭打ち積み土俵工，裏法面に土俵を積みあげる土俵羽口工法，築回し工。(5)亀裂に対する工法　天端の亀裂に対し両肩付近に竹を挿し折り曲げて連結する折返し工(図g)，亀裂が天端から裏法にかかる場合の控取り工，亀裂の線を挟んで竹を数本打ちこみこれを縛るようにする五徳縫い工，裏法に菱形状に杭を打ち竹，鉄線で縫う籠止め工など。　これらの工法は，俵，むしろがビニル製，竹が鉄線，鉄棒，ビニルパイプ，板材がコンクリート製になるなどの材料変化はあるが，工法自体の新しい開発はほとんど見られず，古くからの経験の集積である。…

※「折返し工」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報