Title:
地下構造体の施工方法
Document Type and Number:
Japanese Patent JP7041575
Kind Code:
B2
Abstract:
To provide a construction method of an underground structure capable of constructing timbering of an earth retaining wall and an underground supporting body for improving a base ground, while simultaneously excavating in the earth retaining wall.SOLUTION: Curved boreholes 9, 11 reaching to the other end of an earth retaining wall 3 are drilled by starting a drilling rod 5 from the surface of an outer side of the earth retaining wall 3 and controlling rotation and non-rotation of the drilling rod 5 while applying vibration on the drilling rod 5 or a tip bid 7 to pass through a part of the earth retaining wall 3, after installing the earth retaining wall 3 in the ground 1. The curved borehole 9 is linearly drilled in an inner side of the earth retaining wall 3. The curved borehole 11 is drilled in a way that it is formed in a downward-convex curved shape inside of the earth retaining wall 3. Then, a preceding underground beam 35 and a freezing base ground 37 are constructed as an underground supporting body through a freezing method by arranging freezing tubes 25 and micro-channels 27 in curved borehole 9, 11 to circulate freezing refrigerant.SELECTED DRAWING: Figure 4
Inventors:
Yoshihiro Nakamura
Takano Takashi
Shigeru Saito
Masanori Kagawa
Kenji Yamaguchi
Takano Takashi
Shigeru Saito
Masanori Kagawa
Kenji Yamaguchi
Application Number:
JP2018072394A
Publication Date:
March 24, 2022
Filing Date:
April 04, 2018
Export Citation:
Assignee:
Kashima Construction Co., Ltd.
Chemical Grout Co., Ltd.
Chemical Grout Co., Ltd.
International Classes:
E02D3/115; E02D29/05; E21B6/04; E21D1/14
Domestic Patent References:
| JP2000045264A | ||||
| JP2012072567A | ||||
| JP2016098529A | ||||
| JP4254695A | ||||
| JP2016118024A |
Foreign References:
| US5816748 | ||||
| US3608318 | ||||
| DE3410132A1 |
Attorney, Agent or Firm:
Seiichi Inoue