JPH0860979A - Method for joining tunnel - Google Patents
Method for joining tunnelInfo
- Publication number
- JPH0860979A JPH0860979A JP19961894A JP19961894A JPH0860979A JP H0860979 A JPH0860979 A JP H0860979A JP 19961894 A JP19961894 A JP 19961894A JP 19961894 A JP19961894 A JP 19961894A JP H0860979 A JPH0860979 A JP H0860979A
- Authority
- JP
- Japan
- Prior art keywords
- shield
- tunnel
- vertical shaft
- rails
- shield machine
- 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]
【産業上の利用分野】この発明は、シールド工法によ
り、例えば地下道路のランプ分岐合流部と本線、ランプ
トンネル、地下鉄駅と双設のトンネル部分、下水管路の
合流部分などを構築する際に適用されるトンネル分岐合
流方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for constructing, for example, a ramp branch merging portion of an underground road and a main line, a ramp tunnel, a subway station and a twin tunnel portion, a sewer pipe merging portion, etc. by a shield construction method. The present invention relates to a tunnel branch and merge method applied.
【0002】[0002]
【従来の技術】この種のトンネル分岐合流部において
は、主に開削工法で必要空間が構築されてきた。例え
ば、地下鉄駅の場合には、駅の部分を開削工法で掘削し
て鉄筋コンクリート構造物を構築し、駅と駅との間はシ
ールド工法でトンネルを構築している。また、吹付けと
ロックボルト等を用いて地山を保持する所謂NATM工
法を適用することもある。2. Description of the Related Art In this type of tunnel branching / merging portion, a necessary space has been constructed mainly by an excavation method. For example, in the case of a subway station, a reinforced concrete structure is constructed by excavating a portion of the station by an excavation method, and a tunnel is constructed between the stations by a shield method. In addition, a so-called NATM method for holding the ground by using spraying and rock bolts may be applied.
【0003】さらに、シールド工法を用いた例として
は、2台のシールド機でトンネル分岐合流部にシールド
トンネルを平行に掘削し、そのシールドトンネル間の残
土部分を掘削除去して必要空間を構築する方法がある。
また、地下鉄駅などの構築において、駅部用の大口径の
シールド機を用意し、通常のシールド機で駅部の一端部
まで掘進してくると、ここに大きめの立坑を掘削し、通
常のシールド機を大口径のシールド機に代えて駅部を掘
進し、他端部まで掘進すると、再び大きめの立坑を掘削
し、大口径のシールド機を通常のシールド機に代えて掘
進する方法などもある。Further, as an example of using the shield construction method, two shield machines are used to excavate a shield tunnel in parallel at the junction of the tunnel branches, and excavate and remove the residual soil between the shield tunnels to construct a necessary space. There is a way.
In addition, when constructing a subway station, etc., prepare a large-diameter shield machine for the station part, and when excavating to one end of the station part with a normal shield machine, excavate a large vertical shaft here, If you replace the shield machine with a large-diameter shield machine and proceed to the station part, and proceed to the other end, you will excavate a larger shaft again and replace the large-diameter shield machine with a normal shield machine and proceed. is there.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、開削工
法は、周辺環境への影響が大きく、比較的浅い箇所にし
か構築できないなどの問題点がある。また、NATM工
法は、滞水した未固結含水地山では、信頼性に乏しく、
使用することができない。However, the cutting method has a problem that it has a great influence on the surrounding environment and can be constructed only in a relatively shallow place. In addition, the NATM method has poor reliability in unconsolidated water-bearing grounds that have retained water,
Cannot be used.
【0005】2台のシールド機による平行掘進方法で
も、地盤が安定した条件下で採用が可能なもので、滞水
した未固結含水地山では、膨大な地盤改良が必要とな
る。また、専用の大口径シールド機を使用する方法で
は、大型で高価なシールド機を必要とし、また大口径シ
ールド機に対応した大きな立坑を2つ必要とするため、
掘削コストがかかり、また大口径のシールド機と通常の
シールド機をそれぞれ立坑内に上げ降ろしするため、作
業能率が悪いなどの問題点がある。Even with the parallel excavation method using two shield machines, the method can be adopted under stable ground conditions, and enormous ground improvement is required for unconsolidated water-bearing grounds that have stagnated water. Also, in the method of using a dedicated large-diameter shield machine, a large and expensive shield machine is required, and two large vertical shafts corresponding to the large-diameter shield machine are required.
Excavation costs are high, and a large-diameter shield machine and a normal shield machine are both raised and lowered in the vertical shaft, resulting in poor work efficiency.
【0006】この発明は、前述のような問題点を解消す
べくなされたもので、その目的は、滞水した未固結含水
地山でもトンネル分岐合流部を容易に構築することがで
き、しかも掘削コストの低減および作業能率の向上を図
ることのできるトンネル分岐合流方法を提供することに
ある。The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to easily construct a tunnel branching and merging portion even in a water-bearing unconsolidated water-bearing ground. An object of the present invention is to provide a tunnel branching and joining method capable of reducing excavation cost and improving work efficiency.
【0007】[0007]
【課題を解決するための手段】本発明に係るトンネル分
岐合流部の構築方法は、トンネル分岐合流部の一端部に
立坑を構築し、この立坑から複合円シールド工法により
トンネル分岐合流部の他端部に向けて掘進すると共に、
これと反対方向から複合円シールド工法および/または
単円シールド工法により掘進し、トンネル分岐合流部の
複合円シールドトンネルと、反対側から掘進してきた複
合円シールドトンネルおよび/または単円シールドトン
ネルとを接合するものである。A method of constructing a tunnel branch merging portion according to the present invention is to construct a vertical shaft at one end of the tunnel branch merging portion, and then use the composite circular shield method from the vertical shaft to construct the other end of the tunnel branch merging portion. While digging towards the department,
The composite circular shield tunnel and / or the single circular shield tunnel is excavated from the opposite direction, and the composite circular shield tunnel at the junction and junction of the tunnel and the composite circular shield tunnel and / or the single circle shield tunnel excavated from the opposite side are excavated. It is to join.
【0008】[0008]
【作用】立坑から発進する複合円シールド工法によりト
ンネル分岐合流部が構築され、一方からのシールドトン
ネルが立坑においてトンネル分岐合流部に接続され、他
方からのシールドトンネルがトンネル分岐合流部の他端
部においてメカニカルドッキングなどにより接合され
る。トンネル分岐合流部および両側のトンネル部分を全
てシールド工法で構築することができ、滞水した未固結
含水地山に対してもトンネル分岐合流部を容易に構築す
ることができる。[Operation] A tunnel branch junction is constructed by the composite circular shield method starting from the vertical shaft, the shield tunnel from one side is connected to the tunnel branch junction at the vertical shaft, and the shield tunnel from the other end is the other end of the tunnel branch junction. Are joined by mechanical docking. The tunnel junction and the tunnels on both sides can be constructed by the shield method, and the tunnel junction can be easily constructed even for unconsolidated water-bearing ground.
【0009】トンネル分岐合流部の一端部に立坑を設け
るだけで、また通常のシールド工法を使用できるため、
掘削コストを低減することができる。また、複合円シー
ルド機を立坑から入れ、トンネル分岐合流部の他端部で
はメカニカルドッキング等で接合するので、作業能率を
向上させることができる。Since only a vertical shaft is provided at one end of the tunnel junction, the usual shield construction method can be used,
The excavation cost can be reduced. Further, since the composite circular shield machine is inserted from the vertical shaft and joined at the other end of the tunnel branching and joining section by mechanical docking or the like, work efficiency can be improved.
【0010】[0010]
【実施例】以下、この発明を図示する一実施例に基づい
て説明する。これは、図1に示すように、3本のトンネ
ルの分岐合流に適用した例であり、図では、トンネル分
岐合流部1に斜め隔壁10を配設することにより、2方
向のトンネルがそれぞれ2本に分岐する場合を示してい
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an illustrated embodiment. This is an example applied to branch and merge of three tunnels, as shown in FIG. 1. In the figure, by arranging the oblique partition wall 10 at the tunnel branch and merge part 1, two tunnels in each of two directions are formed. The case of branching into a book is shown.
【0011】図1に示すように、本発明では、トンネル
分岐合流部における一つの立坑2とシールド工法のみ
で、トンネル分岐合流部1とこの両側に連続するトンネ
ル部分を構築する。シールド機は、単円シールド機S-1
と、2連シールド機S-2と、3連シールド機S-3とを使
用する。As shown in FIG. 1, according to the present invention, the tunnel branching and joining section 1 and the tunnel portions continuous on both sides thereof are constructed only by one vertical shaft 2 and the shield construction method in the tunnel branching and joining section. The shield machine is a single circle shield machine S -1.
And a double shield machine S -2 and a triple shield machine S -3 are used.
【0012】2連シールド機S-2と3連シールド機S-3
は、同径のカッターフェースプレートを掘進方向にずら
し、かつ横方向に一部重ねて配列したシールド機であ
り、各中心軸を一致させて接合するメカニカルドッキン
グが可能である。単円シールド機S-1は、3連シールド
機S-3よりも小径のカッターフェースプレートを有する
シールド機とし、シールド機中心軸のずれた異径ドッキ
ングが可能である(図1(c)参照)。Double shield machine S -2 and triple shield machine S -3
Is a shield machine in which cutter face plates having the same diameter are displaced in the excavation direction and partially overlapped in the lateral direction and arranged, and mechanical docking in which the respective central axes are aligned and joined is possible. The single-circle shield machine S -1 is a shield machine having a cutter face plate with a diameter smaller than that of the triple shield machine S -3 , and it is possible to perform docking with different diameters with the center axis of the shield machine displaced (see Fig. 1 (c)). ).
【0013】以上のような構成において、次のように、
施工を行う(図2参照)。In the above-mentioned structure,
Perform construction (see Figure 2).
【0014】(I)トンネル分岐合流部1の右端部にお
ける接合地点に、立坑2を掘削し築造する。これと同時
に、図示しない右側の各立坑から単円シールド機S-1お
よび2連シールド機S-2を立坑2に向けて発進させ、単
円シールドトンネル3と2連シールドトンネル4とを構
築する。(I) A vertical shaft 2 is excavated and constructed at the junction point at the right end of the tunnel junction unit 1. At the same time, the single-circle shield machine S -1 and the double shield machine S -2 are started toward the vertical shaft 2 from each shaft on the right side (not shown) to construct the single-circle shield tunnel 3 and the double shield tunnel 4. .
【0015】(II) 単円シールド機S-1および2連シー
ルド機S-2が立坑2に到達する前に、3連シールド機S
-3を立坑2内に降ろし、左側に向けて発進させる。その
後、右側から掘進してきた単円シールド機S-1および2
連シールド機S-2を立坑2に到達させ、地上に回収す
る。(II) Before the single circle shield machine S -1 and the double shield machine S -2 reach the vertical shaft 2, the triple shield machine S -1.
-3 is dropped into the shaft 2 and started to the left. After that, the single-circle shield machines S- 1 and 2 digging from the right side
Reach the vertical shaft 2 of the continuous shield machine S -2 and collect it on the ground.
【0016】(III) 3連シールド機S-3をトンネル分岐
合流部1の左側端部におけるドッキング地点5まで掘進
させ、これと同時に図示しない左側の各立坑から単円シ
ールド機S-1および2連シールド機S-2をドッキング地
点5に向けて発進させる。(III) The triple shield machine S -3 is dug up to the docking point 5 at the left end of the tunnel junction 1, and at the same time, the single-circle shield machines S -1 and 2 are sewn from the respective left shafts (not shown). Start the continuous shield machine S -2 toward the docking point 5.
【0017】(IV) 3連シールド機S-3と2連シールド
機S-2の2面板どうしを向かい合わせ、メカニカルドッ
キングで接合させる。各シールド機の内装機器を解体し
て取り出し、スキンプレートをそのままトンネル中に埋
設して、3連シールドトンネル6と2連シールドトンネ
ル7を貫通させる。また、必要に応じてスキンプレート
にライニング等を施す。(IV) The two face plates of the triple shield machine S -3 and the double shield machine S -2 are opposed to each other and joined by mechanical docking. The internal equipment of each shield machine is disassembled and taken out, and the skin plate is buried in the tunnel as it is, and the triple shield tunnel 6 and the double shield tunnel 7 are penetrated. If necessary, the skin plate is lined.
【0018】3連シールド機S-3と単円シールド機S-1
の1面板どうし図1(c)に示すように向かい合わせ、
異径ドッキングにより接合させ、前記と同様に各シール
ド機の内装機器を解体して取り出し、スキンプレートを
そのままトンネル中に埋設して、3連シールドトンネル
6と単円シールドトンネル8を貫通させる。その後、隔
壁などを構築することにより、トンネル構造物が完成す
る(図1(b)参照)。Triple shield machine S -3 and single circle shield machine S -1
1 side plates face each other as shown in FIG. 1 (c),
Docking is performed by different-diameter docking, the internal equipment of each shield machine is disassembled and taken out in the same manner as described above, the skin plate is directly embedded in the tunnel, and the triple shield tunnel 6 and the single-circle shield tunnel 8 are penetrated. After that, a tunnel structure is completed by constructing partition walls and the like (see FIG. 1B).
【0019】なお、以上は3本のトンネルの分岐合流す
る場合について説明したが、1本のトンネルと2本のト
ンネルの分岐合流や4本以上のトンネルの分岐合流にも
本発明を適用できる。Although the case where three tunnels are branched and merged has been described above, the present invention can be applied to the branch and merge of one tunnel and two tunnels, and the branch and merge of four or more tunnels.
【0020】[0020]
【発明の効果】前述の通り、この発明に係るトンネル分
岐合流方法は、以上のような構成からなるので、次のよ
うな効果を奏する。As described above, since the tunnel branching and joining method according to the present invention has the above-mentioned structure, it has the following effects.
【0021】(1) トンネル分岐合流部にシールド工法を
使用できるので、滞水した未固結含水地山でも容易かつ
安全にトンネル分岐合流部を構築できる。(1) Since the shield construction method can be used at the tunnel junction, the tunnel junction can be constructed easily and safely even with unconsolidated water-bearing ground.
【0022】(2) トンネル分岐合流部に立坑を一箇所設
けるだけでよいので、また比較的安価なシールド機を採
用できるので、掘削コストを低減することができる。(2) Since it is sufficient to provide only one vertical shaft at the junction of the tunnel branches, a relatively inexpensive shield machine can be employed, so that excavation cost can be reduced.
【0023】(3) トンネル分岐合流部用のシールド機を
一端部の立坑から入れ、他端部でシールド機どうしをド
ッキングさせるため、作業能率を向上させることができ
る。(3) Since the shield machine for the tunnel branch and merge part is inserted from the vertical shaft at one end and the shield machines are docked at the other end, the work efficiency can be improved.
【図1】(a)は、この発明に係るトンネル分岐合流部
の構築方法を示す概略平面図、(b)は、構築されたト
ンネルを示す概略平面図、(c)は、ドッキング部分を
示す概略断面図である。1A is a schematic plan view showing a method of constructing a tunnel branching / merging portion according to the present invention, FIG. 1B is a schematic plan view showing a constructed tunnel, and FIG. 1C is a docking portion. It is a schematic sectional drawing.
【図2】この発明に係るトンネル分岐合流部の構築方法
を順に示す概略平面図である。FIG. 2 is a schematic plan view sequentially showing a method for constructing a tunnel branching / merging portion according to the present invention.
S-1…単円シールド機 S-2…2連シールド機 S-3…3連シールド機 1…トンネル分岐合流部 2…立坑 3…単円シールドトンネル 4…2連シールドトンネル 5…ドッキング地点 6…3連シールドトンネル 7…2連シールドトンネル 8…単円シールドトンネルS -1 … Single circle shield machine S -2 … Double shield machine S -3 … Triple shield machine 1… Tunnel junction / merging section 2… Vertical shaft 3… Single circle shield tunnel 4… Double shield tunnel 5… Docking point 6 … Triple shield tunnel 7… Double shield tunnel 8… Single circle shield tunnel
Claims (1)
築し、この立坑から複合円シールド工法によりトンネル
分岐合流部の他端部に向けて掘進すると共に、これと反
対方向から複合円シールド工法および/または単円シー
ルド工法により掘進し、トンネル分岐合流部の複合円シ
ールドトンネルと、反対側から掘進してきた複合円シー
ルドトンネルおよび/または単円シールドトンネルとを
接合することを特徴とするトンネル分岐合流方法。1. A vertical shaft is constructed at one end of a junction of the tunnel branch, and the vertical shaft is dug from the vertical shaft toward the other end of the junction of the tunnel branch, and a composite circular shield method is applied from the opposite direction. And / or a tunnel branch characterized by joining the composite circle shield tunnel at the junction with the composite circle shield tunnel and / or the single circle shield tunnel that has been dug from the opposite side How to join.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6199618A JP2812208B2 (en) | 1994-08-24 | 1994-08-24 | Tunnel junction method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6199618A JP2812208B2 (en) | 1994-08-24 | 1994-08-24 | Tunnel junction method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0860979A true JPH0860979A (en) | 1996-03-05 |
JP2812208B2 JP2812208B2 (en) | 1998-10-22 |
Family
ID=16410853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6199618A Expired - Fee Related JP2812208B2 (en) | 1994-08-24 | 1994-08-24 | Tunnel junction method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2812208B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114485584A (en) * | 2021-12-30 | 2022-05-13 | 中铁第六勘察设计院集团有限公司 | Subway interval joint measurement method based on reverse joint measurement |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0493494A (en) * | 1990-08-08 | 1992-03-26 | Minoru Yamamoto | Shield excavating machine and construction of tunnel by using shield excavating machine thereof |
-
1994
- 1994-08-24 JP JP6199618A patent/JP2812208B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0493494A (en) * | 1990-08-08 | 1992-03-26 | Minoru Yamamoto | Shield excavating machine and construction of tunnel by using shield excavating machine thereof |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114485584A (en) * | 2021-12-30 | 2022-05-13 | 中铁第六勘察设计院集团有限公司 | Subway interval joint measurement method based on reverse joint measurement |
CN114485584B (en) * | 2021-12-30 | 2023-05-05 | 中铁第六勘察设计院集团有限公司 | Subway interval joint measurement method based on reverse connection measurement |
Also Published As
Publication number | Publication date |
---|---|
JP2812208B2 (en) | 1998-10-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980707 |
|
LAPS | Cancellation because of no payment of annual fees |