A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GROUND IMPROVEMENT METHOD AND GROUND IMPROVEMENT SYSTEM
To provide a ground improvement method and a ground improvement system capable of constructing improved ground excellent in quality while achieving high construction efficiency.SOLUTION: A ground improvement method comprises: the step A for constructing a drilled hole D in a ground G; the step B for installing an outer pipe 20 provided with a plurality of inlets 21 inside the drilled hole D; the step C for constructing a first inner pipe 30 in the outer pipe 20, to which a chemical is supplied, and injecting the chemical into the ground G through the inlets 21; and the step D for pulling out the first inner pipe 30 out of the outer pipe 20 and constructing a second inner pipe 40 in the outer pipe 20 to freeze the ground G by circulating a coolant within the second inner pipe 40.SELECTED DRAWING: Figure 8
【課題】高い施工効率の下で、品質に優れた改良地盤を造成することのできる地盤改良方法と地盤改良システムを提供する。【解決手段】地盤改良方法は、地盤Ｇに掘削孔Ｄを造成するＡ工程と、掘削孔Ｄの内部に、複数の注入口２１を備えている外管２０を配管するＢ工程と、外管２０の内部に、薬液が供給される第一内管３０を建て込み、注入口２１を介して地盤Ｇに薬液を注入するＣ工程と、外管２０から第一内管３０を引き抜いて第二内管４０を外管２０の内部に建て込み、第二内管４０の内部に冷却液を循環させることにより地盤Ｇを凍結するＤ工程とを有する。【選択図】図８
GROUND IMPROVEMENT METHOD AND GROUND IMPROVEMENT SYSTEM
To provide a ground improvement method and a ground improvement system capable of constructing improved ground excellent in quality while achieving high construction efficiency.SOLUTION: A ground improvement method comprises: the step A for constructing a drilled hole D in a ground G; the step B for installing an outer pipe 20 provided with a plurality of inlets 21 inside the drilled hole D; the step C for constructing a first inner pipe 30 in the outer pipe 20, to which a chemical is supplied, and injecting the chemical into the ground G through the inlets 21; and the step D for pulling out the first inner pipe 30 out of the outer pipe 20 and constructing a second inner pipe 40 in the outer pipe 20 to freeze the ground G by circulating a coolant within the second inner pipe 40.SELECTED DRAWING: Figure 8
【課題】高い施工効率の下で、品質に優れた改良地盤を造成することのできる地盤改良方法と地盤改良システムを提供する。【解決手段】地盤改良方法は、地盤Ｇに掘削孔Ｄを造成するＡ工程と、掘削孔Ｄの内部に、複数の注入口２１を備えている外管２０を配管するＢ工程と、外管２０の内部に、薬液が供給される第一内管３０を建て込み、注入口２１を介して地盤Ｇに薬液を注入するＣ工程と、外管２０から第一内管３０を引き抜いて第二内管４０を外管２０の内部に建て込み、第二内管４０の内部に冷却液を循環させることにより地盤Ｇを凍結するＤ工程とを有する。【選択図】図８
GROUND IMPROVEMENT METHOD AND GROUND IMPROVEMENT SYSTEM
地盤改良方法と地盤改良システム
HARA NOBUYUKI (author) / KAI KYOTA (author) / YAMAUCHI KAZUKI (author) / TANIMURO HIROHISA (author) / YOSHIDA SATOSHI (author)
2021-11-01
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
GROUND IMPROVEMENT DEVICE, GROUND IMPROVEMENT SYSTEM, AND GROUND IMPROVEMENT METHOD
| European Patent Office | 2020
GROUND IMPROVEMENT DEVICE, GROUND IMPROVEMENT SYSTEM, AND GROUND IMPROVEMENT METHOD
| European Patent Office | 2019