INSTALLATION METHOD OF DRAIN MATERIAL
To provide an installation method of a drain material capable of installing a drain material using an auger, so as not to cause twist.SOLUTION: A belt-like drain material 8 and a suction hose 11 whose one end is connected with the drain material 8 are inserted into an inside 3 of a hollow rod 2 of a...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To provide an installation method of a drain material capable of installing a drain material using an auger, so as not to cause twist.SOLUTION: A belt-like drain material 8 and a suction hose 11 whose one end is connected with the drain material 8 are inserted into an inside 3 of a hollow rod 2 of an auger 1. The drain material 8a is connected with an anchor 6 disposed at a lower end portion 26 of the hollow rod 2. A swivel mechanism 12 is provided at a position between the other end of the suction hose 11 going out of an upper end of the hollow rod 2 and the anchor 6. A ground is excavated by rotating the hollow rod 2 while pulling upwardly an upper end of the suction hose 11 by a rope 13. When the drain material 8 is disposed in an underground water level variation range, an excavation by the auger 1 is stopped. While leaving the anchor 6 and the drain material 8 in the ground, the hollow rod 2 is pulled out of the ground.SELECTED DRAWING: Figure 1
【課題】オーガーを用いてドレーン材を捻じれが生じないように打設できるドレーン材の打設方法を提供する。【解決手段】オーガー1の中空ロッド2の内部3に、帯状のドレーン材8と、ドレーン材8に一端が連結された吸引ホース11とを挿入し、中空ロッド2の下端部26に配置されたアンカ6にドレーン材8を連結する。また、中空ロッド2の上端から出ている吸引ホース11の他端とアンカ6との間の位置にスイベル機構12を設ける。そして、ロープ13で吸引ホース11の上端を上方に引っ張りつつ中空ロッド2を回転させて地盤を掘削する。ドレーン材8が地下水位変動範囲に配置されたらオーガー1による掘削を停止し、アンカ6とドレーン材8とを地盤中に残し、中空ロッド2を地盤から引き抜く。【選択図】図1 |
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