A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HIGH PRESSURED INJECTION/AGITATION METHOD
To provide a technology allowing an improved body with a relatively larger manufacturing diameter to be formed in constant quality.SOLUTION: A high pressured injection/agitation method injecting hardening liquid from each of nozzles at a high pressure to cut soil with high pressured current 48 of the hardening liquid as well as agitating/mixing the cut soil and the hardening liquid when inserting a double tube rod 18 provided with a first nozzle 36 and a second nozzle 38 on a side surface to the ground to be improved and drawing up the double tube rod 18 by rotating or oscillating it to construct an improvement body 54 in the ground comprises steps of: an improvement body diameter expansion step making the high pressured current 48 reach relatively further distance by rotating the double tube rod 18 at a relatively low rotation speed for a predetermined period; and an improvement body quality upgrade step promoting soil stirring with the high pressured current 48 by rotating the double tube rod 18 at a relatively high rotation speed for a predetermined period, which are alternatively carried out.SELECTED DRAWING: Figure 9
【課題】比較的造成径が大きくて品質の安定した改良体を形成可能な技術を提供する。【解決手段】側面に第１のノズル36及び第２のノズル38を備えた二重管ロッド18を改良対象地盤中に挿入し、二重管ロッド18を回転または揺動等させながら引き上げる際に、各ノズルから固化材液を高圧で噴射し、この固化材液の高圧噴流48によって土壌を切削すると共に、切削した土壌と固化材液とを攪拌混合し、地盤中に改良体54を造成する高圧噴射攪拌工法において、二重管ロッド18を比較的低速な回転速度で所定時間回転させ、高圧噴流48を比較的遠くまで到達させる改良体径拡張工程と、二重管ロッド18を比較的高速な回転速度で所定時間回転させ、高圧噴流48による土壌の攪拌を促進させる改良体高品質化工程が、交互に実行される。【選択図】図９
HIGH PRESSURED INJECTION/AGITATION METHOD
To provide a technology allowing an improved body with a relatively larger manufacturing diameter to be formed in constant quality.SOLUTION: A high pressured injection/agitation method injecting hardening liquid from each of nozzles at a high pressure to cut soil with high pressured current 48 of the hardening liquid as well as agitating/mixing the cut soil and the hardening liquid when inserting a double tube rod 18 provided with a first nozzle 36 and a second nozzle 38 on a side surface to the ground to be improved and drawing up the double tube rod 18 by rotating or oscillating it to construct an improvement body 54 in the ground comprises steps of: an improvement body diameter expansion step making the high pressured current 48 reach relatively further distance by rotating the double tube rod 18 at a relatively low rotation speed for a predetermined period; and an improvement body quality upgrade step promoting soil stirring with the high pressured current 48 by rotating the double tube rod 18 at a relatively high rotation speed for a predetermined period, which are alternatively carried out.SELECTED DRAWING: Figure 9
【課題】比較的造成径が大きくて品質の安定した改良体を形成可能な技術を提供する。【解決手段】側面に第１のノズル36及び第２のノズル38を備えた二重管ロッド18を改良対象地盤中に挿入し、二重管ロッド18を回転または揺動等させながら引き上げる際に、各ノズルから固化材液を高圧で噴射し、この固化材液の高圧噴流48によって土壌を切削すると共に、切削した土壌と固化材液とを攪拌混合し、地盤中に改良体54を造成する高圧噴射攪拌工法において、二重管ロッド18を比較的低速な回転速度で所定時間回転させ、高圧噴流48を比較的遠くまで到達させる改良体径拡張工程と、二重管ロッド18を比較的高速な回転速度で所定時間回転させ、高圧噴流48による土壌の攪拌を促進させる改良体高品質化工程が、交互に実行される。【選択図】図９
HIGH PRESSURED INJECTION/AGITATION METHOD
高圧噴射撹拌工法
WADA TADASUKE (author) / TANAKA HIROYUKI (author)
2022-01-17
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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