JPH0336024U - - Google Patents
Info
- Publication number
- JPH0336024U JPH0336024U JP9733289U JP9733289U JPH0336024U JP H0336024 U JPH0336024 U JP H0336024U JP 9733289 U JP9733289 U JP 9733289U JP 9733289 U JP9733289 U JP 9733289U JP H0336024 U JPH0336024 U JP H0336024U
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- injection
- packer
- injection pipe
- discharge hole
- 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
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000011440 grout Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 2
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Description
第１図は本考案に係る地盤改良装置の一実施例
を示す横断面図である。第２図は第１図の−
線に沿う縦断面図である。第３図は第１図の−
線に沿う縦断面図である。第４図はボーリング
孔内に固定された地盤改良装置を示す縦断面図で
ある。第５図は第４図のダブルパツカーおよびそ
の近傍を拡大して示す縦断面図である。第６図乃
至第９図は注入外管をボーリング孔内に固定する
状態を段階を追つて示す縦断面図である。第１０
図はスリーブ阻止部によりスリーブ部材の吐出孔
内への食い込みが阻止されている状態を示す横断
面図である。第１１図は第１０図の−線
に沿う縦断面図である。第１２図は従来の地盤改
良装置がボーリング孔内に固定された状態を示す
縦断面図である。第１３図は第１２図のダブルパ
ツカーおよびその近傍を拡大して示す縦断面図で
ある。第１４図乃至第１７図は第１３図の注入外
管をボーリング孔内に固定する状態を段階を追つ
て示す縦断面図である。第１８図は第１２図の
−線に沿う横断面図である。第１９図は第
１２図の吐出孔およびその近傍を拡大して示す縦
断面図である。第２０図はスリーブ部材が吐出孔
内に食い込んだ状態を示す横断面図である。第２
１図は第２０図の−線に沿う縦断面
図である。
主要な部分の符号の説明、３５……ボーリング
孔、３７……注入外管、４１……グラウト、４３
……吐出孔、４５……スリーブ部材、４７……ダ
ブルパツカー、４９……上部パツカー、５１……
下部パツカー、５３……注入予備室、５５……注
入ホース、５９……スリーブ阻止部、６７……地
盤。
FIG. 1 is a cross-sectional view showing one embodiment of the ground improvement device according to the present invention. Figure 2 is - of Figure 1.
It is a longitudinal cross-sectional view along the line. Figure 3 is - of Figure 1.
It is a longitudinal cross-sectional view along the line. FIG. 4 is a longitudinal cross-sectional view showing a soil improvement device fixed in a borehole. FIG. 5 is an enlarged vertical sectional view showing the double packer shown in FIG. 4 and its vicinity. FIGS. 6 to 9 are vertical cross-sectional views showing step by step the state in which the injection tube is fixed in the borehole. 10th
The figure is a cross-sectional view showing a state in which the sleeve member is prevented from biting into the discharge hole by the sleeve blocking portion. FIG. 11 is a longitudinal sectional view taken along the - line in FIG. 10. FIG. 12 is a longitudinal sectional view showing a conventional ground improvement device fixed in a borehole. FIG. 13 is an enlarged vertical sectional view showing the double packer shown in FIG. 12 and its vicinity. FIGS. 14 to 17 are vertical cross-sectional views showing step by step the state in which the outer injection tube of FIG. 13 is fixed in a borehole. FIG. 18 is a cross-sectional view taken along the - line in FIG. 12. FIG. 19 is an enlarged vertical sectional view showing the discharge hole and its vicinity in FIG. 12. FIG. 20 is a cross-sectional view showing a state in which the sleeve member has bitten into the discharge hole. Second
FIG. 1 is a longitudinal sectional view taken along the - line in FIG. 20. Explanation of symbols of main parts, 35... Bore hole, 37... Outer injection pipe, 41... Grout, 43
...Discharge hole, 45...Sleeve member, 47...Double packer, 49...Upper packer, 51...
Lower part car, 53... Injection preliminary chamber, 55... Injection hose, 59... Sleeve blocking part, 67... Ground.
Claims (1)
固定され軸長方向に所定間隔を置いて注入材の吐
出孔が形成される注入外管の外面に、前記吐出孔
を被覆するスリーブ部材を配置するとともに、前
記注入外管内に、その軸長方向に所定間隔を置い
て連結された上部パツカーと下部パツカーとから
なるダブルパツカーを挿入し、前記ボーリング孔
内に挿入される注入ホースにより、前記上部パツ
カー、前記下部パツカーおよび前記注入外管に囲
まれた注入予備室を介して、前記注入外管の吐出
孔から地盤に注入材を注入する地盤改良装置にお
いて、前記注入外管の吐出孔内に、前記スリーブ
部材に当接して吐出孔内への食い込みを阻止する
スリーブ阻止部を形成し、このスリーブ阻止部の
外側先端を、ほぼ前記注入外管の外面に相当する
部分に位置させてなることを特徴とする地盤改良
装置。 A sleeve member is disposed on the outer surface of the injection outer tube, which is inserted and fixed into the grout filled in the borehole, and in which discharge holes for the injection material are formed at predetermined intervals in the axial direction, and a sleeve member that covers the discharge holes. A double packer consisting of an upper packer and a lower packer connected at a predetermined interval in the axial direction is inserted into the outer injection pipe, and the upper packer, the In a ground improvement device that injects a grouting material into the ground from a discharge hole of the outer injection pipe through an injection preliminary chamber surrounded by a lower packer and the outer injection pipe, the sleeve is placed in the discharge hole of the outer injection pipe. A sleeve blocking portion is formed that comes into contact with the member to prevent it from biting into the discharge hole, and the outer tip of the sleeve blocking portion is located at a portion that substantially corresponds to the outer surface of the outer injection tube. Ground improvement equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9733289U JPH0336024U (en) | 1989-08-21 | 1989-08-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9733289U JPH0336024U (en) | 1989-08-21 | 1989-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0336024U true JPH0336024U (en) | 1991-04-09 |
Family
ID=31646478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9733289U Pending JPH0336024U (en) | 1989-08-21 | 1989-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0336024U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51133910A (en) * | 1975-05-14 | 1976-11-20 | Raito Kougiyou Kk | Method of improving subsoil |
-
1989
- 1989-08-21 JP JP9733289U patent/JPH0336024U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51133910A (en) * | 1975-05-14 | 1976-11-20 | Raito Kougiyou Kk | Method of improving subsoil |
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