JP2929027B2 - Removal method of existing sewer and installation of expanded sewer - Google Patents
Removal method of existing sewer and installation of expanded sewerInfo
- Publication number
- JP2929027B2 JP2929027B2 JP2082919A JP8291990A JP2929027B2 JP 2929027 B2 JP2929027 B2 JP 2929027B2 JP 2082919 A JP2082919 A JP 2082919A JP 8291990 A JP8291990 A JP 8291990A JP 2929027 B2 JP2929027 B2 JP 2929027B2
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- sewer
- existing sewer
- outer cutter
- existing
- 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 - Lifetime
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、既設管渠の撤去を行なうと同時に新たに拡
大管渠の布設を行なうための方法及び装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method and an apparatus for removing an existing sewer and laying a newly expanded sewer.
〈従来の技術〉 既設管渠の撤去と新たな拡大管渠の布設とを同時に行
なうための公知の装置としては、地山を掘削するため回
転カッター盤の外周付近に設けた外周側ビットと、既設
管渠を切削除去するため外周側ビットの内方中心側に設
けた内周側ビットとを備える。しかしながら、この装置
では同一の回転カッター盤に地山を掘削するための外周
側ビットと既設管渠を切削するための内周側ビットとを
配設するため、必然的に切削抵抗の大きい内周側ビット
により掘進が遅れるにもかかわらず外周側ビットは地山
を不必要に繰り返して掘削するため地山を乱し、切羽が
不安定となり、安全性に問題を生ずるという欠点があ
る。また、既設管渠の切削面と地山の掘削面が同一平面
上にあるため、流動性の地盤ではカッター盤の空隙部か
ら土砂、地下水が流入し、地山の崩壊を生ずる可能性が
ある。<Conventional technology> As a known device for simultaneously removing an existing sewer and laying a new enlarged sewer, an outer peripheral side bit provided near an outer periphery of a rotary cutter board for excavating a ground, An inner peripheral bit is provided on the inner side of the outer peripheral bit to cut and remove the existing sewer. However, in this apparatus, since the outer peripheral bit for excavating the ground and the inner peripheral bit for cutting the existing culvert are arranged on the same rotary cutter board, the inner peripheral bit having a large cutting resistance is inevitably provided. Although the excavation is delayed due to the side bit, the outer peripheral side bit unnecessarily repeatedly excavates the ground, disturbing the ground, making the face unstable and causing a problem in safety. In addition, since the cut surface of the existing sewer and the excavation surface of the ground are on the same plane, soil and groundwater may flow from the voids in the cutter board on the fluid ground, and the ground may collapse. .
〈発明が解決しようとする課題〉 本発明の目的は、地山を乱すことなく、切羽が安定
し、安全で効率のよい、既設管渠の撤去並びに拡大管渠
の布設を同時に行なう方法及び装置を提供することにあ
る。また、本発明によれば、流動性の地盤であっても地
山の崩壊を生ずる可能性のない、既設管渠の撤去並びに
拡大管渠の布設を同時に行なう方法及び装置を提供する
ことを目的とする。<Problem to be Solved by the Invention> An object of the present invention is to provide a method and an apparatus for simultaneously removing a sewer and laying an enlarged sewer with a stable face, safe and efficient without disturbing the ground. Is to provide. Another object of the present invention is to provide a method and an apparatus for simultaneously removing an existing sewer and laying an enlarged sewer without the possibility of collapse of the ground even in a fluid ground. And
〈課題を解決するための手段〉 本発明によれば、既設管渠の開口端部外周面に被嵌し
て該既設管渠周囲の地山を掘削するカッター刃を有する
外側カッターと、該既設管渠の開口端部を切削するカッ
ター刃を、該外側カッターのカッター刃の後方且つ内周
に配設した内側カッターとを備えるシールド機を用い
て、既設管渠を撤去すると共に該既設管渠よりも大径の
拡大管渠を布設する工法において、該外側カッターを回
転制御及び推進制御して地山を掘削すると同時に、該外
側カッターとは別個に該内側カッターを回転制御及び推
進制御して該既設管渠を切削除去し、該シールド機の後
端に新管渠を後続させ、前記外側カッターにて掘削拡大
されたトンネルに新たな拡大管渠を布設することを特徴
とする既設管渠の撤去並びに拡大管渠の布設方法が提供
される。<Means for Solving the Problems> According to the present invention, an outer cutter having a cutter blade that is fitted to an outer peripheral surface of an open end of an existing sewer and excavates ground around the existing sewer; Using a shield machine having a cutter blade for cutting the open end of the sewer and an inner cutter disposed behind and inside the cutter blade of the outer cutter, the existing sewer is removed and the existing sewer is removed. In the construction method of laying an enlarged sewer with a diameter larger than that of the outside cutter, the rotation control and the propulsion control are performed to excavate the ground, and at the same time, the rotation control and the propulsion control of the inner cutter are performed separately from the outer cutter. The existing sewer is cut and removed, a new sewer follows the rear end of the shield machine, and a new expanded sewer is laid in a tunnel excavated and expanded by the outer cutter. Removal and laying of expanded sewer A law is provided.
また本発明によれば、既設管渠の開口端部外周面に被
嵌して該既設管渠周囲の地山を掘削するカッター刃を有
する外側カッターを備え、該既設管渠の開口端部を切削
するカッター刃を、該外側カッターのカッター刃の後方
且つ内周に配置した内側カッターを備えるシールド機に
おいて、前記外側カッターを回転する第１の回転手段
と、前記外側カッターを推進する第１の推進手段と、前
記外側カッターとは別個に前記内側カッターを回転する
第２の回転手段と、前記外側カッターとは別個に前記内
側カッターを推進する第２の推進手段とを備えた拡大シ
ールド機が提供される。Further, according to the present invention, there is provided an outer cutter having a cutter blade which is fitted on an outer peripheral surface of an open end of the existing sewer and excavates a ground around the existing sewer, and the open end of the existing sewer is In a shield machine having an inner cutter in which a cutter blade to be cut is disposed behind and on the inner periphery of the cutter blade of the outer cutter, a first rotating means for rotating the outer cutter, and a first rotating means for propelling the outer cutter. A magnifying shield machine comprising a propulsion unit, a second rotation unit for rotating the inner cutter separately from the outer cutter, and a second propulsion unit for propelling the inner cutter separately from the outer cutter is provided. Provided.
〈実施例〉 以下、本発明の実施例につき添付図面を参照して説明
する。<Example> Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.
拡大シールド機10は先端に地山を掘削するための外側
カッター11と、既設管渠12を切削するための内側カッタ
ー13とを備える。外側カッター11はモーター14により回
動され、また一方、内側カッター13は別個に制御される
モーター15により回動される。図示のように、外側カッ
ター11は地山を前進掘削するため内側カッター13の前方
側に突出配設され、内側カッター13は管渠12を後進切削
する。管渠12と外側カッター11との間隙にはシール部材
16を外側カッター11の内周面に取付け、地山の掘削の際
に拡大シールド機10の内側に土砂、地下水が侵入するの
を防止し、切羽の安定を維持する。The magnifying shield machine 10 includes an outer cutter 11 for excavating the ground at an end and an inner cutter 13 for cutting an existing sewer 12. The outer cutter 11 is turned by a motor 14, while the inner cutter 13 is turned by a separately controlled motor 15. As shown in the drawing, the outer cutter 11 is disposed so as to protrude forward of the inner cutter 13 to excavate the ground, and the inner cutter 13 cuts the sewer 12 backward. A seal member is provided in the gap between the sewer 12 and the outer cutter 11.
16 is attached to the inner peripheral surface of the outer cutter 11 to prevent earth and sand and groundwater from entering the inside of the magnifying shield machine 10 when excavating the ground, and to maintain the stability of the face.
掘削に当っては切羽を維持しつつ地山を掘削を行なう
ため矢印Ｘ方向に管17を投して泥水を地盤掘削チャンバ
ー18に圧入し、掘削されたズリに応じて管19より矢印Ｙ
方向に排出する。地山の掘削の進行に伴って前胴推進ジ
ャッキ20,21により前胴22を前進させる。前胴推進ジャ
ッキ20,21の反力は図示のように後胴23により得ること
ができる。一方、内側カッター13により切削された管渠
12のガラ24はシュート25を通してベルトコンベヤ26によ
り搬出される。管渠12の切削に応じて後胴推進ジャッキ
27,28により後胴23を前進させる。後胴推進ジャッキ27,
28の反力は布設したセグメント29により得ることができ
る。外側カッター11の掘削速度と内側カッター13の切削
速度とは各々モーター14,15の回転速度を別個に制御し
て同期させる。外側カッター11の掘削速度と内側カッタ
ー13の切削速度に多少のずれがあっても前胴22と後胴23
とは別個に前進させることができるので、モーター14,1
5を適宜調整することにより補完することができる。In excavation, in order to excavate the ground while maintaining the face, a pipe 17 is thrown in the direction of arrow X to inject muddy water into the ground excavation chamber 18 and, according to the excavated slip, an arrow Y from the pipe 19.
Discharge in the direction. The front trunk 22 is advanced by the front trunk propulsion jacks 20 and 21 with the progress of excavation of the ground. The reaction force of the front trunk jacks 20, 21 can be obtained by the rear trunk 23 as shown. On the other hand, the sewer cut by the inner cutter 13
The twelve galaxies 24 are carried out by a belt conveyor 26 through a chute 25. Rear trunk jack according to the cutting of sewer 12
The rear trunk 23 is advanced by 27 and 28. Rear trunk jack 27,
The reaction force of 28 can be obtained by the laid segment 29. The digging speed of the outer cutter 11 and the cutting speed of the inner cutter 13 are synchronized by separately controlling the rotation speeds of the motors 14 and 15, respectively. Even if there is some deviation between the digging speed of the outer cutter 11 and the cutting speed of the inner cutter 13, the front trunk 22 and the rear trunk 23
Can be advanced separately from the motor 14,1
It can be complemented by appropriately adjusting 5.
なお、本実施例では、外側カッター11を前胴22に設置
し、内側カッター13を後胴23に設置して互いにスライド
可能にできる構造としているか、装置胴部を一体とし、
内側カッター部を機内（胴内）でスライドできる構造と
することも可能である。In the present embodiment, the outer cutter 11 is installed on the front body 22 and the inner cutter 13 is installed on the rear body 23 so as to be slidable with each other, or the apparatus body is integrated,
It is also possible to adopt a structure in which the inner cutter portion can slide inside the machine (in the body).
〈効果〉 本発明によれば、地山を乱さず安定した切羽が提供さ
れ、安全で効率よく、既設管渠の撤去と拡大管渠の布設
とを同時に行なうことができる。<Effect> According to the present invention, a stable face is provided without disturbing the ground, and the removal of the existing sewer and the installation of the expanded sewer can be performed simultaneously and safely.
【図面の簡単な説明】 第１図は本発明の既設管渠の撤去並びに拡大トンネルの
掘削を同時に行なうための掘削切装置を示す部分を略示
断面図である。 11……外側カッター、12……既設管渠、 13……内側カッター、16……シール部材。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic sectional view showing a part of an excavation cutting device for simultaneously removing an existing sewer and excavating an enlarged tunnel according to the present invention. 11 ... Outer cutter, 12 ... Existing sewer, 13 ... Inner cutter, 16 ... Seal member.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F16L 1/00 - 1/26 E21D 9/06 311 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) F16L 1/00-1/26 E21D 9/06 311
Claims (4)
設管渠周囲の地山を掘削するカッター刃を有する外側カ
ッターと、該既設管渠の開口端部を切削するカッター刃
を、該外側カッターのカッター刃の後方且つ内周に配置
した内側カッターとを備えるシールド機を用いて、既設
管渠を撤去すると共に該既設管渠よりも大径の拡大管渠
を布設する工法において、 該外側カッターを回転制御及び推進制御して地山を掘削
すると同時に、該外側カッターとは別個に該内側カッタ
ーを回転制御及び推進制御して該既設管渠を切削除去
し、該シールド機の後端に新管渠を後続させ、前記外側
カッターにて掘削拡大されたトンネルに新たな拡大管渠
を布設することを特徴とする既設管渠の撤去並びに拡大
管渠の布設方法。1. An outer cutter having a cutter blade which is fitted on an outer peripheral surface of an open end of an existing sewer and excavates a ground around the existing sewer, and a cutter which cuts an open end of the existing sewer. The existing sewer is removed and an enlarged sewer larger in diameter than the existing sewer is laid using a shield machine having a blade and an inner cutter disposed behind and on the inner periphery of the cutter blade of the outer cutter. In the method of construction, the ground is excavated by controlling the rotation and propulsion of the outer cutter, and at the same time, the existing sewer is cut and removed by controlling the rotation and propulsion of the inner cutter separately from the outer cutter. A method of removing an existing culvert and laying an enlarged culvert, wherein a new culvert follows a rear end of the machine, and a new culvert is laid in a tunnel excavated and expanded by the outer cutter.
を密封して前記外側カッターにて地山を前進掘削し、次
いで前記内側カッターにて前記既設管渠を後進切削除去
することを特徴とする請求項１記載の方法。2. The method according to claim 1, wherein a gap between the existing sewer and the outer cutter is sealed, and the ground is excavated forward by the outer cutter, and then the existing sewer is cut backward by the inner cutter. The method according to claim 1, wherein
設管渠周囲の地山を掘削するカッター刃を有する外側カ
ッターを備え、該既設管渠の開口端部を切削するカッタ
ー刃を、該外側カッターのカッター刃の後方且つ内周に
配置した内側カッターを備えるシールド機において、 前記外側カッターを回転する第１の回転手段と、前記外
側カッターを推進する第１の推進手段と、前記外側カッ
ターとは別個に前記内側カッターを回転する第２の回転
手段と、前記外側カッターとは別個に前記内側カッター
を推進する第２の推進手段とを備えた拡大シールド機。3. An external cutter having a cutter blade which is fitted on an outer peripheral surface of an open end of an existing sewer and excavates a ground around the existing sewer, and cuts an open end of the existing sewer. In a shield machine having an inner cutter in which a cutter blade is disposed behind and on the inner periphery of the cutter blade of the outer cutter, a first rotating means for rotating the outer cutter, and a first propulsion means for propelling the outer cutter And a second rotating means for rotating the inner cutter independently of the outer cutter; and a second propulsion means for propelling the inner cutter separately from the outer cutter.
切削するため、前記内側カッターに対し前記外側カッタ
ーを前方側に突出配設し、前記既設管渠と前記外側カッ
ターとの間隙を密封するためのシール部材を前記外側カ
ッターに取付けることを特徴とする請求項３記載の拡大
シールド機。4. An excavator for excavating the ground and simultaneously cutting the existing sewer backward, wherein the outer cutter is disposed so as to protrude forward with respect to the inner cutter, and a gap between the existing sewer and the outer cutter is provided. The magnifying shield machine according to claim 3, wherein a seal member for sealing the outer cutter is attached to the outer cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2082919A JP2929027B2 (en) | 1990-03-31 | 1990-03-31 | Removal method of existing sewer and installation of expanded sewer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2082919A JP2929027B2 (en) | 1990-03-31 | 1990-03-31 | Removal method of existing sewer and installation of expanded sewer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03288080A JPH03288080A (en) | 1991-12-18 |
| JP2929027B2 true JP2929027B2 (en) | 1999-08-03 |
Family
ID=13787656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2082919A Expired - Lifetime JP2929027B2 (en) | 1990-03-31 | 1990-03-31 | Removal method of existing sewer and installation of expanded sewer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2929027B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0890707A1 (en) * | 1997-07-11 | 1999-01-13 | Heerema Ondergrondse Infrastructuren B.V. | Method, system and device for building a wall in the ground |
| JP2004003209A (en) * | 2002-05-31 | 2004-01-08 | Fukuda Corp | Method for replacing existing pipe |
| CN104265315A (en) * | 2014-09-30 | 2015-01-07 | 中铁工程装备集团有限公司 | Novel hard rock tunnel tunneling machine capable of expanding excavation |
-
1990
- 1990-03-31 JP JP2082919A patent/JP2929027B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03288080A (en) | 1991-12-18 |
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