Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
FROZEN PIPE AND FREEZING METHOD
To provide a frozen pipe dispensing with enlarging the diameter of a boring hole, and causing no pressure drop of high pressure water when drilling the boring hole, and a freezing method using the same.SOLUTION: A frozen pipe (10) has a drilling rod (1) for drilling a boring hole (H) while jetting drilling water (W) and a refrigerant supply pipe (2) inserted into the drilling rod (1). On an outer peripheral surface near a tip of the refrigerant supply pipe (2), a sealing part (2A) is formed for sealing a boundary between the outer peripheral surface and the inner peripheral surface of a throttling part (1A) of the drilling rod (1). An opening (2B) is formed in the refrigerant supply pipe (2). When the refrigerant supply pipe (2) is not inserted into the drilling rod (1), a drilling water flow passage is formed in an entire region of the drilling rod (1), and when the refrigerant supply pipe (2) is inserted into the drilling rod (1), a return flow passage of a refrigerant (R) to the ground side is formed in a region of the ground side from the throttling part (1A), in an annular space between the inner peripheral surface of the drilling hole (1) and the outer peripheral surface of the refrigerant supply pipe (2).SELECTED DRAWING: Figure 3
【課題】ボーリング孔の径寸法を大きくする必要がなく、しかも、ボーリング孔削孔の際に高圧水の圧力を低減させることがない凍結管と、それを用いた凍結工法の提供。【解決手段】本発明の凍結管（１０）は、削孔水（Ｗ）を噴射しつつボーリング孔（Ｈ）を削孔する削孔ロッド（１）と、削孔ロッド（１）内に挿入される冷媒供給管（２）を有し、冷媒供給管（２）先端近傍の外周面には当該外周面と削孔ロッド（１）の絞り部（１Ａ）内周面との境界をシールするシール部（２Ａ）が形成され、冷媒供給管（２）には開口部（２Ｂ）が形成され、削孔ロッド（１）に冷媒供給管（２）を挿入しない時、削孔ロッド（１）の全領域に削孔水流路が構成され、削孔ロッド（１）に冷媒供給管（２）を挿入時、削孔ロッド（１）の内周面と冷媒供給管（２）の外周面間の円環状空間で、絞り部（１Ａ）よりも地上側の領域で冷媒（Ｒ）の地上側への戻り流路が構成される。【選択図】図３
FROZEN PIPE AND FREEZING METHOD
To provide a frozen pipe dispensing with enlarging the diameter of a boring hole, and causing no pressure drop of high pressure water when drilling the boring hole, and a freezing method using the same.SOLUTION: A frozen pipe (10) has a drilling rod (1) for drilling a boring hole (H) while jetting drilling water (W) and a refrigerant supply pipe (2) inserted into the drilling rod (1). On an outer peripheral surface near a tip of the refrigerant supply pipe (2), a sealing part (2A) is formed for sealing a boundary between the outer peripheral surface and the inner peripheral surface of a throttling part (1A) of the drilling rod (1). An opening (2B) is formed in the refrigerant supply pipe (2). When the refrigerant supply pipe (2) is not inserted into the drilling rod (1), a drilling water flow passage is formed in an entire region of the drilling rod (1), and when the refrigerant supply pipe (2) is inserted into the drilling rod (1), a return flow passage of a refrigerant (R) to the ground side is formed in a region of the ground side from the throttling part (1A), in an annular space between the inner peripheral surface of the drilling hole (1) and the outer peripheral surface of the refrigerant supply pipe (2).SELECTED DRAWING: Figure 3
【課題】ボーリング孔の径寸法を大きくする必要がなく、しかも、ボーリング孔削孔の際に高圧水の圧力を低減させることがない凍結管と、それを用いた凍結工法の提供。【解決手段】本発明の凍結管（１０）は、削孔水（Ｗ）を噴射しつつボーリング孔（Ｈ）を削孔する削孔ロッド（１）と、削孔ロッド（１）内に挿入される冷媒供給管（２）を有し、冷媒供給管（２）先端近傍の外周面には当該外周面と削孔ロッド（１）の絞り部（１Ａ）内周面との境界をシールするシール部（２Ａ）が形成され、冷媒供給管（２）には開口部（２Ｂ）が形成され、削孔ロッド（１）に冷媒供給管（２）を挿入しない時、削孔ロッド（１）の全領域に削孔水流路が構成され、削孔ロッド（１）に冷媒供給管（２）を挿入時、削孔ロッド（１）の内周面と冷媒供給管（２）の外周面間の円環状空間で、絞り部（１Ａ）よりも地上側の領域で冷媒（Ｒ）の地上側への戻り流路が構成される。【選択図】図３
FROZEN PIPE AND FREEZING METHOD
凍結管および凍結工法
KUMEGAWA MASANORI (Autor:in) / SOMA HIROSHI (Autor:in) / SHIOYA YUTA (Autor:in) / SANO YUKA (Autor:in)
11.03.2022
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
FREEZING PREVENTION PIPE AND FREEZING PREVENTION METHOD
| Europäisches Patentamt | 2024