A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GROUND FREEZING METHOD, AND FREEZING PIPE UNIT
To provide a ground freezing method and a freezing pipe unit which efficiently freeze a ground without unevenness and can easily change a freezing part and a freezing range of the ground.SOLUTION: A freezing pipe 11 is installed in the ground, and a plurality of packers 15a and 15 are arranged at a predetermined interval in the freezing pipe 11 in a state of being connected to supply pipes 12a and 12b, a recovery pipe 13 and fluid pipes 14a and 14b. A fluid is flowed into the packers 15a and 15b and is expanded, and then a cooling material is circulated through a blocking section X blocked by the packers 15a and 15b through the supply pipes 12a and 12b and the recovery pipe 13, and the ground around the blocking section X is frozen. Then, the fluid in the packers 15a and 15b is flowed and contracted, and then the supply pipes 12a and 12b, the recovery pipe 13, the fluid pipes 14a and 14b and the packers 15a and 15b are moved in a pipe axis direction in the freezing pipe 11. Steps from the expansion to the movement are repeatedly executed, and the ground around the freezing pipe 11 is sequentially frozen for each predetermined section.SELECTED DRAWING: Figure 5
【課題】地盤をムラなく効率よく凍結させ、かつ地盤の凍結箇所や凍結範囲を容易に変更できる地盤凍結工法及び凍結管ユニットを提供する。【解決手段】地盤中に凍結管１１を設置し、複数のパッカー１５ａ、１５ｂを、供給管１２ａ、１２ｂ、回収管１３、流体管１４ａ、１４ｂ、と連結した状態で、凍結管１１内に所定の間隔で配置する。パッカー１５ａ、１５ｂ内に流体を流入させて膨張させてから、供給管１２ａ、１２ｂと回収管１３とを通して、パッカー１５ａ、１５ｂで閉塞された閉塞区間Ｘに冷却材を循環させ、閉塞区間Ｘの周囲の地盤を凍結させる。その後、パッカー１５ａ、１５ｂ内の流体を流出させて収縮させてから、供給管１２ａ、１２ｂ、回収管１３、流体管１４ａ、１４ｂ、パッカー１５ａ、１５ｂを、凍結管１１内で管軸方向に移動させる。上記の膨張から移動までの工程を繰り返し実行し、凍結管１１の周囲の地盤を所定区間毎に順次凍結させる。【選択図】図５
GROUND FREEZING METHOD, AND FREEZING PIPE UNIT
To provide a ground freezing method and a freezing pipe unit which efficiently freeze a ground without unevenness and can easily change a freezing part and a freezing range of the ground.SOLUTION: A freezing pipe 11 is installed in the ground, and a plurality of packers 15a and 15 are arranged at a predetermined interval in the freezing pipe 11 in a state of being connected to supply pipes 12a and 12b, a recovery pipe 13 and fluid pipes 14a and 14b. A fluid is flowed into the packers 15a and 15b and is expanded, and then a cooling material is circulated through a blocking section X blocked by the packers 15a and 15b through the supply pipes 12a and 12b and the recovery pipe 13, and the ground around the blocking section X is frozen. Then, the fluid in the packers 15a and 15b is flowed and contracted, and then the supply pipes 12a and 12b, the recovery pipe 13, the fluid pipes 14a and 14b and the packers 15a and 15b are moved in a pipe axis direction in the freezing pipe 11. Steps from the expansion to the movement are repeatedly executed, and the ground around the freezing pipe 11 is sequentially frozen for each predetermined section.SELECTED DRAWING: Figure 5
【課題】地盤をムラなく効率よく凍結させ、かつ地盤の凍結箇所や凍結範囲を容易に変更できる地盤凍結工法及び凍結管ユニットを提供する。【解決手段】地盤中に凍結管１１を設置し、複数のパッカー１５ａ、１５ｂを、供給管１２ａ、１２ｂ、回収管１３、流体管１４ａ、１４ｂ、と連結した状態で、凍結管１１内に所定の間隔で配置する。パッカー１５ａ、１５ｂ内に流体を流入させて膨張させてから、供給管１２ａ、１２ｂと回収管１３とを通して、パッカー１５ａ、１５ｂで閉塞された閉塞区間Ｘに冷却材を循環させ、閉塞区間Ｘの周囲の地盤を凍結させる。その後、パッカー１５ａ、１５ｂ内の流体を流出させて収縮させてから、供給管１２ａ、１２ｂ、回収管１３、流体管１４ａ、１４ｂ、パッカー１５ａ、１５ｂを、凍結管１１内で管軸方向に移動させる。上記の膨張から移動までの工程を繰り返し実行し、凍結管１１の周囲の地盤を所定区間毎に順次凍結させる。【選択図】図５
GROUND FREEZING METHOD, AND FREEZING PIPE UNIT
地盤凍結工法、凍結管ユニット
KIYOTOKI TAKESHI (author) / YOSHIOKA YASUNORI (author)
2021-10-11
Patent
Electronic Resource
Japanese