A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GROUTING METHOD AND GROUTING DEVICE
To provide a grouting method that forms a consolidated ground that is entirely integrated, homogeneous, watertight, and highly strong, in response to complex ground conditions in a soft ground etc.SOLUTION: By performing grouting by using non-alkali silica grout with a continuously changing gel time, a soft ground in complex ground conditions can be consolidated. The gel time of the non-alkali silica grout varies rapidly depending on pH. For example, when a grouted ground consists of multiple different soil layers, depending on the ground conditions for each soil layer, by fixing or continuously changing a discharge rate per minute of the combined liquid of liquid A and liquid B as the non-alkali silica grout, a blending ratio of flash setting/slow setting, the number of stages, and a silica concentration, and injecting the non-alkali silica grout while continuously changing and managing the gel time, an overall homogeneous and high-strength consolidated ground can be obtained.SELECTED DRAWING: Figure 6
【課題】軟弱地盤などにおける複雑な地盤状況に応じて、全体的に一体化された、均質で、止水の完全な、しかも高強度な固結地盤を形成する地盤注入工法を提供する。【解決手段】ゲルタイムを連続的に変化させた非アルカリシリカグラウトを用いて地盤注入を行うことにより、複雑な地盤状況にある軟弱地盤を固結する。非アルカリシリカグラウトのゲルタイムはｐＨによって急激に変動するが、例えば、注入地盤が複数の異なる土層からなる場合において、各土層毎に地盤状況に合わせて、非アルカリシリカグラウトとしてのＡ液とＢ液の合流液の毎分吐出量、瞬結・緩結の配合比率、ステージ数、シリカ濃度を固定又は連続的に変化させ、ゲルタイムを連続的に変化させて管理しながら注入することで、全体的に均質で高強度な固結地盤を得ることができる。【選択図】図６
GROUTING METHOD AND GROUTING DEVICE
To provide a grouting method that forms a consolidated ground that is entirely integrated, homogeneous, watertight, and highly strong, in response to complex ground conditions in a soft ground etc.SOLUTION: By performing grouting by using non-alkali silica grout with a continuously changing gel time, a soft ground in complex ground conditions can be consolidated. The gel time of the non-alkali silica grout varies rapidly depending on pH. For example, when a grouted ground consists of multiple different soil layers, depending on the ground conditions for each soil layer, by fixing or continuously changing a discharge rate per minute of the combined liquid of liquid A and liquid B as the non-alkali silica grout, a blending ratio of flash setting/slow setting, the number of stages, and a silica concentration, and injecting the non-alkali silica grout while continuously changing and managing the gel time, an overall homogeneous and high-strength consolidated ground can be obtained.SELECTED DRAWING: Figure 6
【課題】軟弱地盤などにおける複雑な地盤状況に応じて、全体的に一体化された、均質で、止水の完全な、しかも高強度な固結地盤を形成する地盤注入工法を提供する。【解決手段】ゲルタイムを連続的に変化させた非アルカリシリカグラウトを用いて地盤注入を行うことにより、複雑な地盤状況にある軟弱地盤を固結する。非アルカリシリカグラウトのゲルタイムはｐＨによって急激に変動するが、例えば、注入地盤が複数の異なる土層からなる場合において、各土層毎に地盤状況に合わせて、非アルカリシリカグラウトとしてのＡ液とＢ液の合流液の毎分吐出量、瞬結・緩結の配合比率、ステージ数、シリカ濃度を固定又は連続的に変化させ、ゲルタイムを連続的に変化させて管理しながら注入することで、全体的に均質で高強度な固結地盤を得ることができる。【選択図】図６
GROUTING METHOD AND GROUTING DEVICE
地盤注入工法および地盤注入装置
SHIMADA SHUNSUKE (author) / TSUNODA YURIKA (author) / SASAKI TAKAMITSU (author) / TAI TOMOHIRO (author) / KIJIMA TADASHI (author)
2024-01-17
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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