JPS59111891U - Drilling equipment for reverse excavation method - Google Patents
Drilling equipment for reverse excavation methodInfo
- Publication number
- JPS59111891U JPS59111891U JP542683U JP542683U JPS59111891U JP S59111891 U JPS59111891 U JP S59111891U JP 542683 U JP542683 U JP 542683U JP 542683 U JP542683 U JP 542683U JP S59111891 U JPS59111891 U JP S59111891U
- Authority
- JP
- Japan
- Prior art keywords
- drilling equipment
- excavation method
- borehole
- reverse circulation
- reverse excavation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案に係るリバースサーキュレーション工法
における掘削装置の一実施例を示す正面図、第２図は第
１図の矢視■■図、第３図は第２図の矢視■−■図、第
４図は本考案の他の実施例を示す正面図である。
１・・・ドリルパイプ、９・・・ファン、１０・・・環
状フード、１１・・・螺旋板、１２・・・環状フード。Fig. 1 is a front view showing an embodiment of the excavation equipment in the reverse circulation construction method according to the present invention, Fig. 2 is a view in the direction of the arrows in Fig. 1, and Fig. 3 is in the direction of the arrows in Fig. 2. Figures 1 and 4 are front views showing other embodiments of the present invention. DESCRIPTION OF SYMBOLS 1... Drill pipe, 9... Fan, 10... Annular hood, 11... Spiral plate, 12... Annular hood.
Claims (1)
せながら連続的に地盤を掘削し、掘削土砂を孔内水とと
もにドリルパイプ内より外孔に排出するリバースサーキ
ュレーション工法の掘削装置において、前記掘削孔内に
吊下されたドリルストリンゲスに、外周に環状フードを
具えたファンを放射状に、或いは螺旋板を軸方向に配設
してなることを特徴とするリバースサーキュレーション
工法における掘削装置。In the drilling equipment of the reverse circulation method, the ground is continuously excavated while the wall surface is stabilized by the hydrostatic pressure of the water filled in the borehole, and the excavated soil is discharged from the inside of the drill pipe to the outer hole along with the water inside the borehole. Drilling equipment for reverse circulation construction method, characterized in that a fan with an annular hood on the outer periphery is arranged radially or a spiral plate is arranged axially on the drill string suspended in the drilling hole. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP542683U JPS59111891U (en) | 1983-01-20 | 1983-01-20 | Drilling equipment for reverse excavation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP542683U JPS59111891U (en) | 1983-01-20 | 1983-01-20 | Drilling equipment for reverse excavation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59111891U true JPS59111891U (en) | 1984-07-28 |
Family
ID=30137013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP542683U Pending JPS59111891U (en) | 1983-01-20 | 1983-01-20 | Drilling equipment for reverse excavation method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59111891U (en) |
-
1983
- 1983-01-20 JP JP542683U patent/JPS59111891U/en active Pending
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