JP2000213278A - Method for connecting shield tunnel - Google Patents
Method for connecting shield tunnelInfo
- Publication number
- JP2000213278A JP2000213278A JP1240599A JP1240599A JP2000213278A JP 2000213278 A JP2000213278 A JP 2000213278A JP 1240599 A JP1240599 A JP 1240599A JP 1240599 A JP1240599 A JP 1240599A JP 2000213278 A JP2000213278 A JP 2000213278A
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- shield
- excavation
- preceding tunnel
- curved part
- 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.)
- Granted
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、シールドトンネル
の連結方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting shield tunnels.
【０００２】[0002]
【従来の技術】トンネルの距離が長くなると１台のシー
ルド掘進機で掘進するには工期が長くなりすぎる。その
ために両側からシールド掘進機を発進させて地中で合体
させる工法が採用されている。しかしさらに距離が長く
なると、中間に立坑を構築し、その立坑からシールド掘
進機を発進させ、１台のシールド掘進機で掘進する距離
を短くする工法を採用せざるを得ない。2. Description of the Related Art When the distance of a tunnel becomes long, the construction period becomes too long to excavate with one shield excavator. For this purpose, a construction method in which shield excavators are started from both sides and coalesced underground is adopted. However, when the distance is further increased, it is necessary to adopt a method of constructing a shaft in the middle, starting a shield excavator from the shaft, and shortening the excavation distance with one shield excavator.
【０００３】[0003]
【本発明が解決しようとする課題】しかし前記したよう
な中間に立坑を構築する工法では、トンネルが深くなる
と多額の立坑構築の費用や、長い工事期間を要する。However, in the method of constructing a shaft in the middle as described above, when the tunnel becomes deep, a large amount of shaft construction cost and a long construction period are required.
【０００４】[0004]
【本発明の目的】本発明は上記したような従来の問題を
解決するためになされたもので、大規模な中間立坑を設
置する必要がなく、長距離のシールドトンネルを構築す
ることができる、シールドトンネルの連結方法を提供す
ることを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and does not require the installation of a large-scale intermediate shaft, and can construct a long-distance shield tunnel. An object of the present invention is to provide a method for connecting a shield tunnel.
【０００５】[0005]
【課題を解決するための手段】上記のような目的を達成
するために、本発明のシールドトンネルの連結方法は、
先行して１本の曲線シールドトンネルを構築し、この先
行トンネルの曲線部に向けて、他の後行トンネルを掘進
し、後行トンネルによって、先行トンネルの曲線部を削
り取って掘進を続け、その後に後行トンネルは、先行ト
ンネルから離れる方向に向けて掘進を続けて行う、シー
ルドトンネルの連結方法を特徴としたものである。In order to achieve the above object, a method for connecting a shield tunnel according to the present invention comprises:
One curved shield tunnel was constructed in advance, and another trailing tunnel was dug toward this curved part of the preceding tunnel, and the trailing tunnel cut off the curved part of the preceding tunnel and continued excavation. The trailing tunnel is characterized by a method of connecting shield tunnels that continuously excavates in a direction away from the preceding tunnel.
【０００６】さらに本発明のシールド掘進機の連結方法
は、先行して１本の曲線シールドトンネルを構築し、こ
の先行トンネルの曲線部に向けて、他の後行トンネルを
掘進し、後行トンネルによって、先行トンネルの曲線部
を削り取って掘進を続け、両トンネルの軸線を一致させ
た後に、後行トンネルのシールド掘進機の外筒の一部
を、先行トンネルの外部に被覆して行う、シールドトン
ネルの連結方法を特徴としたものである。Further, in the connecting method of the shield excavator according to the present invention, one curved shield tunnel is previously constructed, and another trailing tunnel is dug toward the curved portion of the preceding tunnel, and the trailing tunnel is constructed. By cutting off the curved part of the preceding tunnel and continuing excavation, after aligning the axes of both tunnels, shielding the outer tunnel of the leading tunnel with a part of the outer cylinder of the shield tunneling machine of the following tunnel It features a tunnel connection method.
【０００７】[0007]
【本発明の実施の態様】以下図面を参照しながら本発明
のシールドトンネルの連結方法の実施例について説明す
る。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【０００８】＜イ＞先行トンネルの構築。 先行して１本のシールドトンネルを構築する。この先行
トンネル１は、特に曲線シールドトンネルとして形成す
る。すなわち、地上から例えば平面αに沿って斜坑を、
所定のトンネルの中心線に至るまで構築し、その後にシ
ールド掘進機の中心を設計ラインに合致させて掘進を行
う。先行シールド掘進機１１の掘進と、その掘削跡をシ
ールド掘進機１１内部で組み立てたセグメントによって
被覆する工程は従来と同様である。<A> Construction of preceding tunnel. First, one shield tunnel will be constructed. This leading tunnel 1 is formed in particular as a curved shield tunnel. That is, from the ground, for example, along a plane α,
The tunnel is constructed up to the center line of a predetermined tunnel, and thereafter the excavation is performed by matching the center of the shield machine to the design line. The excavation of the preceding shield machine 11 and the process of covering the excavation trace with the segments assembled inside the shield machine 11 are the same as those in the related art.
【０００９】＜ロ＞先行トンネル１の曲線部の構造。 先行トンネル１の曲線部では、曲線の外側に位置するセ
グメントの一部を、切削が容易な材料で形成した軟質セ
グメント１２で構築しておく。切削が容易な材料とは例
えば鉄筋の代わりに炭素繊維を配置したコンクリートな
どである。また軟質セグメント１２間、あるいは軟質セ
グメント１２と鉄筋コンクリート製の一般セグメント間
の結合にも炭素繊維を合成樹脂で固めたボルトなどを利
用する。そして先行トンネル１の内部には、後述するよ
うに、後行トンネル２が接触して離れて行く通路の形状
を予測して円弧状の仕切り壁１３を構築しておく。この
円弧状の仕切り壁１３の外側に、切削容易な軟質セグメ
ント１２を配置し、セグメント１２と仕切り壁１３との
間の空間は、エアモルタル１４などで充填しておく。仕
切り壁１３は、コンクリート製の円弧状セグメントを利
用できるが、鋼材を円弧状の壁に形成し、その内側を支
柱で支持するような構成を採用することもできる。<B> The structure of the curved portion of the preceding tunnel 1. In the curved portion of the preceding tunnel 1, a part of the segment located outside the curve is constructed of a soft segment 12 formed of a material that is easy to cut. The material that is easy to cut is, for example, concrete in which carbon fibers are arranged instead of reinforcing bars. In addition, bolts made of carbon fiber fixed with a synthetic resin are used for the connection between the soft segments 12 or between the soft segments 12 and the general segments made of reinforced concrete. As described later, an arc-shaped partition wall 13 is constructed in the interior of the preceding tunnel 1 by predicting the shape of a passage to which the following tunnel 2 comes in contact and separates. A soft segment 12 that is easy to cut is arranged outside the arc-shaped partition wall 13, and the space between the segment 12 and the partition wall 13 is filled with an air mortar 14 or the like. The partition wall 13 can use a concrete arc-shaped segment, but it is also possible to adopt a configuration in which a steel material is formed into an arc-shaped wall and the inside thereof is supported by a column.
【００１０】＜ハ＞後行トンネル２の構築。 この先行トンネル１の曲線部に向けて、他の後行トンネ
ル２を掘進する。この後行トンネル２の中心線は、トン
ネルの設計ラインに合致した状態で掘進を続ける。この
後行トンネル２の構築も従来の工法と同様である。<C> Construction of trailing tunnel 2 Another trailing tunnel 2 is dug toward the curved part of the preceding tunnel 1. The center line of the following tunnel 2 continues excavation in a state where it matches the design line of the tunnel. The construction of the subsequent tunnel 2 is the same as the conventional method.
【００１１】＜ニ＞後行トンネル２の接触。 後行トンネル２の掘進方向の前方にはすでに先行トンネ
ル１が構築してある。したがって後行トンネル２のシー
ルド掘進機は、先行トンネル１の曲線部に徐々に接近す
る。接近したら後行トンネル２のシールド掘進機によっ
て、先行トンネル１の外側の軟質セグメント１２、およ
び内部のエアモルタル１４などを削り取って掘進を続け
る。その際に、後行トンネル２の先行トンネル１側の壁
が、先行トンネル１の仕切り壁１３に接触した状態で構
築される。<D> Contact of the trailing tunnel 2. The preceding tunnel 1 has already been constructed ahead of the trailing tunnel 2 in the direction of excavation. Therefore, the shield machine of the following tunnel 2 gradually approaches the curved part of the preceding tunnel 1. When approaching, the excavator of the trailing tunnel 2 scrapes off the soft segment 12 outside and the air mortar 14 inside the preceding tunnel 1 and continues to excavate. At that time, the wall of the succeeding tunnel 2 on the side of the preceding tunnel 1 is constructed in contact with the partition wall 13 of the preceding tunnel 1.
【００１２】＜ホ＞後行トンネル２の離脱。 後行トンネル２のシールド掘進機２１は、後行トンネル
２の投影断面が先行トンネル１の投影断面と一致するま
で先行トンネル１の軟質セグメント１２を削り取って掘
進を続ける。 その後に後行トンネル２は、中心線から
外れる方向、すなわち先行トンネル１から離れる方向に
向けて平面βに沿って掘進を続ける。こうして、両トン
ネルは別方向から掘進してきて曲線部で接触し、その後
に離れる状態に配置されるから、両トンネルはＸ字状に
連結し、中心線が一致した２本のトンネルが連結するこ
とになる。<E> Departure of the trailing tunnel 2. The shield machine 21 of the trailing tunnel 2 cuts out the soft segment 12 of the preceding tunnel 1 and continues digging until the projected section of the trailing tunnel 2 matches the projected section of the preceding tunnel 1. Thereafter, the trailing tunnel 2 continues digging along the plane β in a direction away from the center line, that is, in a direction away from the preceding tunnel 1. In this way, the two tunnels are dug from different directions and come into contact at the curved part, and then are separated from each other. Therefore, both tunnels are connected in an X-shape, and two tunnels with the same center line are connected. become.
【００１３】＜ヘ＞両トンネルの貫通。 周囲の地盤を改良して補強した後、先行トンネル１の仕
切り壁１３、後行トンネル１の外側のセグメントを解体
して両トンネル間に存在する壁面を撤去し、貫通させ
る。その後に内部の梁などを構築して完成する。<F> Penetration of both tunnels. After the surrounding ground is improved and reinforced, the partition wall 13 of the preceding tunnel 1 and the outer segment of the following tunnel 1 are dismantled, and the walls existing between the two tunnels are removed and penetrated. After that, the internal beams are constructed and completed.
【００１４】＜ト＞直接合体する工法。 以上の工法は、後行トンネル２のシールド掘進機２１
が、先行トンネル１への連結後には中心線から外側に外
れてゆく方法であったが、後行トンネル２をそのまま先
行トンネル１へ連結することもできる。そのために先行
トンネル１の曲線部は外側に軟質セグメントを配置し、
その内部はエアモルタル１４などを充填しておく。そし
て後行トンネル２のシールド掘進機は先行トンネル１の
曲線部に進入させ、両トンネルの軸線が一致した状態
で、先行トンネル１の外側の軟質セグメント１２および
内部のエアモルタル１４を削り取って掘進を続ける。後
行シールド掘進機２１が完全に先行トンネル１内部に位
置した状態で、後行シールド掘進機２１の内部装置と外
筒２２とを分離する。そして推進ジャッキを使用して外
筒２２のみを前進させ、先行トンネル１の外部に被せ
る。両トンネルの外径が同一寸法であれば後行シールド
掘進機２１の外筒２２は、先行トンネル１を外部から覆
うことができる。その後にシールド掘進機２１の内部の
装置やモルタルを撤去して両トンネルを貫通し、トンネ
ルの連結を完了する。<G> A method of directly merging. The above construction method uses the shield tunneling machine 21 of the following tunnel 2
However, after the connection to the preceding tunnel 1, it is a method of deviating from the center line to the outside, but the following tunnel 2 can be connected to the preceding tunnel 1 as it is. For this purpose, the curved section of the preceding tunnel 1 has a soft segment on the outside,
The inside is filled with an air mortar 14 or the like. Then, the shield excavator of the succeeding tunnel 2 enters the curved portion of the preceding tunnel 1, and in a state where the axes of both tunnels coincide with each other, the soft segment 12 outside the preceding tunnel 1 and the air mortar 14 inside the preceding tunnel 1 are scraped off and excavated. to continue. In a state where the trailing shield machine 21 is completely located inside the preceding tunnel 1, the internal device of the trailing shield machine 21 and the outer cylinder 22 are separated. Then, only the outer cylinder 22 is advanced using the propulsion jack, and is put on the outside of the preceding tunnel 1. If the outer diameters of both tunnels are the same, the outer cylinder 22 of the trailing shield machine 21 can cover the preceding tunnel 1 from the outside. After that, the device and the mortar inside the shield machine 21 are removed to penetrate both tunnels, and the connection of the tunnels is completed.
【００１５】[0015]
【本発明の効果】本発明のシールドトンネルの連結方法
は以上説明したようになるから次のような効果を得るこ
とができる。 ＜イ＞中間立坑を構築するほどの規模を要せずに、斜坑
トンネルを構築する程度の作業によって、１台のシール
ド掘進機による掘進から他のシールド掘進機による掘進
へと切り替えを行うことができる。したがって中間立坑
を設けることなく、短い工期で経済的に長距離のトンネ
ル構築することができる。 ＜ロ＞先行トンネル１の曲線部に、事前に後行シールド
掘進機の通過位置に合わせた仕切り壁を設置してあり、
後行シールド掘進機はその仕切り壁の外側のセグメント
を削り取る状態で前進を続ける。したがって後行トンネ
ル２は正確なガイドにしたがって曲線部を通過すること
ができ、精度の高い連結を行うことができる。 ＜ハ＞先行トンネル１の曲線部に、後行トンネル２を背
後から連結することができるから、平面的にＹ字状、Ｘ
字状の連結を行うことができる。 ＜ニ＞路線の直上に立坑の用地がなくとも施工すること
ができる。According to the method for connecting the shield tunnel of the present invention as described above, the following effects can be obtained. <a> It is possible to switch from excavation by one shield excavator to excavation by another shield excavator by work that is similar to constructing an inclined shaft tunnel without requiring a scale sufficient to construct an intermediate shaft. it can. Therefore, a long tunnel can be constructed economically in a short construction period without providing an intermediate shaft. <B> In the curved part of the preceding tunnel 1, a partition wall has been installed in advance in accordance with the passing position of the trailing shield machine,
The trailing shield machine continues to advance, cutting off the outer segments of the partition. Therefore, the trailing tunnel 2 can pass through the curved portion according to an accurate guide, and a highly accurate connection can be performed. <C> Since the trailing tunnel 2 can be connected to the curved portion of the preceding tunnel 1 from behind, it is Y-shaped and X-shaped in plan.
A letter-shaped connection can be made. <D> Construction is possible even if there is no site for a shaft directly above the line.
【図１】本発明のシールドトンネルの連結方法の施工順
序の説明図。FIG. 1 is an explanatory view of a construction order of a shield tunnel connecting method of the present invention.
【図２】施工順序の説明図。FIG. 2 is an explanatory view of a construction order.
【図３】施工順序の説明図。FIG. 3 is an explanatory view of a construction order.
【図４】施工順序の説明図。FIG. 4 is an explanatory view of a construction order.
【図５】先行トンネルの曲線部の説明図。FIG. 5 is an explanatory diagram of a curved portion of a preceding tunnel.
【図６】シールドトンネルの他の連結方法の施工順序の
説明図。FIG. 6 is an explanatory view of a construction order of another connection method of the shield tunnel.
【図７】他の施工順序の説明図。FIG. 7 is an explanatory view of another construction order.
【図８】他の施工順序の説明図。FIG. 8 is an explanatory view of another construction order.
【図９】他の施工順序の説明図。FIG. 9 is an explanatory view of another construction order.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小林 信明 東京都新宿区西新宿一丁目25番１号 大成 建設株式会社内 (72)発明者 梶 修 東京都新宿区西新宿一丁目25番１号 大成 建設株式会社内 (72)発明者 中村 昌宏 東京都新宿区西新宿一丁目25番１号 大成 建設株式会社内 Ｆターム(参考） 2D054 AA02 AA04 AA07 AC01 EA09 FA01 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Nobuaki Kobayashi, Inventor 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Osamu Kaji 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Inventor Masahiro Nakamura 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo F-term (reference) 2D054 AA02 AA04 AA07 AC01 EA09 FA01
Claims (2)
築し、 この先行トンネルの曲線部に向けて、他の後行トンネル
を掘進し、 後行トンネルによって、先行トンネルの曲線部を削り取
って掘進を続け、 その後に後行トンネルは、先行トンネルから離れる方向
に向けて掘進を続けて行う、 シールドトンネルの連結方法。1. A curved shield tunnel is constructed in advance, and another trailing tunnel is dug toward the curved part of the preceding tunnel. The trailing tunnel cuts off the curved part of the leading tunnel. A method of connecting shield tunnels that continues excavating, and then continues to excavate the subsequent tunnel in a direction away from the preceding tunnel.
築し、 この先行トンネルの曲線部に向けて、他の後行トンネル
を掘進し、 後行トンネルによって、先行トンネルの曲線部を削り取
って掘進を続け、 両トンネルの軸線を一致させた後に、 後行トンネルのシールド掘進機の外筒の一部を、 先行トンネルの外部に被覆して行う、 シールドトンネルの連結方法。2. A curved shield tunnel is constructed in advance, and another trailing tunnel is dug toward the curved part of the preceding tunnel, and the trailing tunnel cuts off the curved part of the leading tunnel. A method of joining shield tunnels in which excavation is continued, and after aligning the axes of both tunnels, a part of the outer cylinder of the shield tunneling machine of the following tunnel is covered outside the preceding tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01240599A JP3895881B2 (en) | 1999-01-20 | 1999-01-20 | Shield tunnel connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01240599A JP3895881B2 (en) | 1999-01-20 | 1999-01-20 | Shield tunnel connection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000213278A true JP2000213278A (en) | 2000-08-02 |
| JP3895881B2 JP3895881B2 (en) | 2007-03-22 |
Family
ID=11804362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01240599A Expired - Fee Related JP3895881B2 (en) | 1999-01-20 | 1999-01-20 | Shield tunnel connection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3895881B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005299087A (en) * | 2004-04-06 | 2005-10-27 | Zenitaka Corp | Junction coupling of tunnel, junction structure of tunnel and junction method of tunnel |
| JP2006200317A (en) * | 2005-01-24 | 2006-08-03 | Taisei Corp | Construction method of divergent and confluent section of tunnel |
| JP2007191895A (en) * | 2006-01-18 | 2007-08-02 | Taisei Corp | Composite body of segment caisson or propelling caisson and air mortar block, and method of constructing tunnel having multi-continuous cross section |
| JP2013087460A (en) * | 2011-10-17 | 2013-05-13 | Taisei Corp | Connection method of tunnels and ring for connection |
| CN112337513A (en) * | 2020-10-21 | 2021-02-09 | 中国南方电网有限责任公司超高压输电公司昆明局 | Converter valve inner cooling water self-cleaning circulating device |
-
1999
- 1999-01-20 JP JP01240599A patent/JP3895881B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005299087A (en) * | 2004-04-06 | 2005-10-27 | Zenitaka Corp | Junction coupling of tunnel, junction structure of tunnel and junction method of tunnel |
| JP4593155B2 (en) * | 2004-04-06 | 2010-12-08 | 株式会社錢高組 | Tunnel junction joint, tunnel junction structure, and tunnel junction method |
| JP2006200317A (en) * | 2005-01-24 | 2006-08-03 | Taisei Corp | Construction method of divergent and confluent section of tunnel |
| JP4485373B2 (en) * | 2005-01-24 | 2010-06-23 | 大成建設株式会社 | Construction method of tunnel junction |
| JP2007191895A (en) * | 2006-01-18 | 2007-08-02 | Taisei Corp | Composite body of segment caisson or propelling caisson and air mortar block, and method of constructing tunnel having multi-continuous cross section |
| JP4634308B2 (en) * | 2006-01-18 | 2011-02-16 | 大成建設株式会社 | Segment box or propulsion box and air mortar block composite, and construction method for multiple section tunnel |
| JP2013087460A (en) * | 2011-10-17 | 2013-05-13 | Taisei Corp | Connection method of tunnels and ring for connection |
| CN112337513A (en) * | 2020-10-21 | 2021-02-09 | 中国南方电网有限责任公司超高压输电公司昆明局 | Converter valve inner cooling water self-cleaning circulating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3895881B2 (en) | 2007-03-22 |
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