JP2789546B2 - Cutting method of the mirror part of the reaching shaft in shield construction - Google Patents
Cutting method of the mirror part of the reaching shaft in shield constructionInfo
- Publication number
- JP2789546B2 JP2789546B2 JP28884092A JP28884092A JP2789546B2 JP 2789546 B2 JP2789546 B2 JP 2789546B2 JP 28884092 A JP28884092 A JP 28884092A JP 28884092 A JP28884092 A JP 28884092A JP 2789546 B2 JP2789546 B2 JP 2789546B2
- Authority
- JP
- Japan
- Prior art keywords
- reaching shaft
- shield machine
- steel plate
- cutting device
- shield
- 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.)
- Expired - Fee Related
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はシールド工事における到
達立坑の鏡部の切断方法に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cutting a mirror portion of a reaching shaft in shield work.
【０００２】[0002]
【従来の技術】従来、シールド工法においてシールド機
が到達立坑の外側に到達したのち、同到達立坑の内側よ
り、鋼矢板であれば人力によってシールド機よりやや大
きめにガス切断していた。切断に際しては、作業員が２
〜３人で持ち運べる程度に分割されていた。2. Description of the Related Art Conventionally, in a shield construction method, after a shield machine has reached the outside of a reaching shaft, gas is cut from the inside of the reaching shaft slightly larger than a shield machine by a human power if steel sheet pile is used. When cutting, two workers
It was divided so that it could be carried by three people.
【０００３】[0003]
【発明が解決しようとする課題】このため従来工法によ
れば、鋼矢板の鏡部を切断するのに長時間を要し、また
人力切断の際には、シールド機械の外径より余裕をみて
大きめに切断するので、シールド機と鋼矢板の間に隙間
が生じる。そしてこの隙間から土砂が流出して危険を伴
う。For this reason, according to the conventional construction method, it takes a long time to cut the mirror portion of the steel sheet pile, and in the case of manual cutting, a margin is given to the outside diameter of the shield machine. Because of the large cutting, there is a gap between the shield machine and the steel sheet pile. And the earth and sand flows out from this gap, which is dangerous.
【０００４】本発明は前記従来技術の有する問題点に鑑
みて提案されたもので、その目的とする処は、施工性が
向上され、工期が短縮され、作業の安全性が保持される
シールド工事における到達立坑の鏡部の切断方法を提供
する点にある。The present invention has been proposed in view of the above-mentioned problems of the prior art, and the object thereof is to improve the workability, shorten the construction period, and maintain the safety of work. The present invention is to provide a method for cutting the mirror portion of the reaching shaft in the above.
【０００５】[0005]
【課題を解決するための手段】前記の目的を達成するた
め、本発明に係るシールド工事における到達立坑の鏡部
の切断方法によれば、シールド機先端のカッター外縁端
部に鋼板切断装置を装着し、前記シールド機が到達立坑
に到達したのち、前記鋼板切断装置を作動して、前記到
達立坑の山留鋼矢板を切断するものである。According to the present invention, there is provided a method for cutting a mirror portion of a reaching shaft in shield construction according to the present invention, wherein a steel plate cutting device is mounted on a cutter outer edge at a tip end of a shield machine. Then, after the shield machine reaches the reaching shaft, the steel plate cutting device is operated to cut the piled steel sheet pile of the reaching shaft.
【０００６】請求項２の発明によれば前記鋼板切断装置
は、シールド機に配設されたジャッキシリンダーに、先
端にカッターが装着されたシリンダーロッドを進退自在
に装着して構成されている。According to a second aspect of the present invention, the steel plate cutting device is configured such that a cylinder rod having a cutter mounted on a tip thereof is movably mounted on a jack cylinder provided in a shield machine.
【０００７】[0007]
【作用】本発明は前記したように構成されているので、
シールド機が到達立坑に到達したとき、同シールド機の
先端カッター外周縁に装着された鋼板切断装置を作動し
て、前記到達立坑の山留鋼板をシールド機外径とほぼ同
径に切断しうるものであり、シールド機の切断部との間
に殆んど隙間がなくなり、土砂の流出が防止される。Since the present invention is configured as described above,
When the shield machine reaches the reaching shaft, the steel plate cutting device mounted on the outer peripheral edge of the tip cutter of the shield machine can be operated to cut the retaining steel plate of the reaching shaft to approximately the same diameter as the outer diameter of the shield machine. Almost no gap is formed between the shield and the cut portion of the shield machine, and the outflow of earth and sand is prevented.
【０００８】[0008]
【実施例】以下本発明を図示の実施例について説明す
る。１はシールド機、２は同シールド機の掘進に伴って
その後方に組立てられるセグメント、３は到達立坑Ａの
山留鋼矢板である。前記シールド機１の端部外周縁には
鋼板切断装置４が配設されている。同鋼板切断装置４の
油圧ジャッキシリンダー４ａがシールド機１に装着さ
れ、同シリンダー４ａに進退動自在に装架されたシリン
ダーロッド４ｂの先端にカッター４ｃが装着されてい
る。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a shield machine, 2 is a segment assembled behind the shield machine as the shield machine excavates, and 3 is a pile steel sheet pile of a reaching shaft A. A steel plate cutting device 4 is arranged on the outer peripheral edge of the end of the shield machine 1. A hydraulic jack cylinder 4a of the steel plate cutting device 4 is mounted on the shield machine 1, and a cutter 4c is mounted on a tip of a cylinder rod 4b mounted on the cylinder 4a so as to move forward and backward.
【０００９】図示の実施例は前記したように構成されて
いるので、シールド機１が到達立坑Ａに到達すると、
（図１及び図２参照）前記鋼板切断装置４を作動してカ
ッター４ｃによって到達立坑Ａの山留鋼矢板３をシール
ド機の外郭に沿って切断して撤去する。従って同鋼矢板
３が効率よく短時間で切断され、切断部とシールド機１
の外径とほぼ同径に切断されるので、土砂、水の流出も
防止される。また切断作業が短時間で行なわれるため、
土砂流出の危険も少なく作業が安全に行なわれる。Since the illustrated embodiment is configured as described above, when the shield machine 1 reaches the arrival shaft A,
(See FIGS. 1 and 2) The steel plate cutting device 4 is operated to cut and remove the piled steel sheet pile 3 of the reaching shaft A along the outer shell of the shield machine by the cutter 4c. Therefore, the steel sheet pile 3 is efficiently cut in a short time, and the cut portion and the shield machine 1 are cut.
Since it is cut to almost the same diameter as the outer diameter of the soil, outflow of earth and sand and water is also prevented. Also, since the cutting work is performed in a short time,
Work is performed safely with less risk of sediment runoff.
【００１０】図中５は到達立坑Ａに進入したシールド機
１の外周を圧締するパッキン、６は鏡部撤去部である。In the figure, reference numeral 5 denotes a packing for pressing the outer periphery of the shield machine 1 which has entered the reaching shaft A, and reference numeral 6 denotes a mirror removal portion.
【００１１】[0011]
【発明の効果】本発明によれば前記したように、シール
ド機先端のカッター外縁部に配設された鋼板切断装置４
によって到達立坑Ａの鏡部を機械切断するので施工性能
が向上され、しかもシールド機外径とほぼ同径に切断す
ることができるので、水と土砂の流出する危険が防止さ
れる。また切断作業が短時間で可能のため、土砂流出の
危険も少なく作業の安全性が向上される。According to the present invention, as described above, the steel plate cutting device 4 disposed at the outer edge of the cutter at the tip of the shield machine is used.
Since the mirror portion of the reaching shaft A is mechanically cut by this, the construction performance is improved, and furthermore, since it is possible to cut the mirror approximately the same diameter as the outer diameter of the shield machine, the risk of water and earth and sand flowing out is prevented. In addition, since the cutting operation can be performed in a short time, there is little danger of earth and sand outflow, and the safety of the operation is improved.
【００１２】請求項２の発明は、前記切断装置がシール
ド機に配設されたジャッキシリンダに進退動自在に装架
されたシリンダロッド先端にカッターを装着して構成さ
れているので、到達立坑の山留鋼矢板を高性能で、精度
よく切断することができる。According to a second aspect of the present invention, the cutter is mounted on a tip of a cylinder rod mounted on a jack cylinder provided in a shield machine so as to be able to move forward and backward. Yamadome Steel Sheet Pile can be cut with high performance and accuracy.
【図１】シールド機の到達立坑への到達状況を示す縦断
面図である。FIG. 1 is a vertical cross-sectional view showing how a shield machine reaches a reaching shaft.
【図２】到達立坑鏡部外側の切断状況を示す正面図であ
る。FIG. 2 is a front view showing a cutting state outside a reaching shaft section.
【図３】シールド機によるシールド立坑鏡部内側の切断
状況を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing a cutting state of the inside of a shield shaft section by a shield machine.
【図４】到達立坑の鏡部、切断撤去状況を示す縦断側面
図である。FIG. 4 is a vertical sectional side view showing a mirror portion of a reaching shaft and a cutting and removing state.
【図５】シールド機による到達立坑の鏡部切断作業状況
を示す縦断面図である。FIG. 5 is a longitudinal sectional view showing a mirror section cutting operation state of a reaching shaft by a shield machine.
【図６】鋼板切断装置の側面図である。FIG. 6 is a side view of the steel plate cutting device.
Ａ 到達立坑 １ シールド機 ２ セグメント ３ 山留鋼矢板 ４ 鋼板切断装置 ４ａ 油圧ジャッキシリンダー ４ｂ シリンダーロッド ４ｃ カッター ５ パッキン ６ 鏡部撤去部 A Arriving shaft 1 Shielding machine 2 Segment 3 Yamadome steel sheet pile 4 Steel plate cutting device 4a Hydraulic jack cylinder 4b Cylinder rod 4c Cutter 5 Packing 6 Mirror removal part
Claims (2)
板切断装置を装着し、前記シールド機が到達立坑に到達
したのち、前記鋼板切断装置を作動して、前記到達立坑
の山留鋼矢板を切断することを特徴とするシールド工事
における到達立坑の鏡部の切断方法。1. A steel plate cutting device is attached to the outer edge of a cutter at the tip of a shield machine. After the shield machine reaches a reaching shaft, the steel plate cutting device is operated to remove a steel sheet pile of the reaching shaft. A method of cutting a mirror portion of a reaching shaft in shield work, which comprises cutting.
されたジャッキシリンダーに、先端にカッターが装着さ
れたシリンダーロッドを進退自在に装着してなる請求項
１記載のシールド工事における到達立坑の鏡部の切断方
法。2. The reaching shaft according to claim 1, wherein the steel plate cutting device comprises a jack cylinder provided on a shield machine, and a cylinder rod having a cutter attached to a tip thereof is attached to the jack cylinder so as to be able to move forward and backward. How to cut the mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28884092A JP2789546B2 (en) | 1992-10-27 | 1992-10-27 | Cutting method of the mirror part of the reaching shaft in shield construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28884092A JP2789546B2 (en) | 1992-10-27 | 1992-10-27 | Cutting method of the mirror part of the reaching shaft in shield construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06137061A JPH06137061A (en) | 1994-05-17 |
| JP2789546B2 true JP2789546B2 (en) | 1998-08-20 |
Family
ID=17735430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28884092A Expired - Fee Related JP2789546B2 (en) | 1992-10-27 | 1992-10-27 | Cutting method of the mirror part of the reaching shaft in shield construction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2789546B2 (en) |
-
1992
- 1992-10-27 JP JP28884092A patent/JP2789546B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06137061A (en) | 1994-05-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |