JPH0313694A - Construction method for composite-cross section shield - Google Patents
Construction method for composite-cross section shieldInfo
- Publication number
- JPH0313694A JPH0313694A JP14732889A JP14732889A JPH0313694A JP H0313694 A JPH0313694 A JP H0313694A JP 14732889 A JP14732889 A JP 14732889A JP 14732889 A JP14732889 A JP 14732889A JP H0313694 A JPH0313694 A JP H0313694A
- Authority
- JP
- Japan
- Prior art keywords
- shield
- remaining
- skin plate
- cutter
- attached
- 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
- 238000010276 construction Methods 0.000 title claims description 16
- 239000002131 composite material Substances 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000009412 basement excavation Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
この発明は、複合断面シールド工法、特に併設トンネル
を自在に接合又は分岐させるための工法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a composite cross-section shield construction method, particularly to a construction method for freely joining or branching tunnels.
「従来の技術、発明が解決せんとする問題点」一般に、
地下鉄道や道路トンネル、あるいは共同溝などのトンネ
ルにおいては、分離した単線トンネルを駅部や合流部等
において二連メガネ型複合断面として接合一体化し、さ
らにこの接合部から単線トンネルに分岐させる場合があ
る。"Prior art, problems to be solved by the invention" Generally,
In tunnels such as underground railways, road tunnels, or public ditches, separate single-track tunnels are sometimes joined together as a double-lensed composite cross section at stations or junctions, and then branched into single-track tunnels from this joint. be.
従来、トンネルの分岐・接合は難しく、山岳トンネル等
では分岐接合はＮＡＴＭ工法で施工する場合が多いが、
この工法では工期、工費が嵩む上に、安全性に難点があ
る。Traditionally, branching and joining tunnels is difficult, and in mountain tunnels, branching and joining are often constructed using the NATM construction method.
This construction method not only increases the construction period and cost, but also has safety issues.
また、都市トンネルでは接合地点に立坑を設置し、接合
部をマンホール、ボックスカルバート等の構築物とする
のであるが、立坑を設置する場所・工事費を勘案すると
、シールド機によって円滑に分岐・接合できるようにす
ることが望まれているのが現状である。In addition, in urban tunnels, vertical shafts are installed at junctions, and the joints are constructed with structures such as manholes and box culverts, but considering the location and construction costs for installing the shaft, it is possible to branch and connect smoothly using shield machines. The current situation is that it is desired to do so.
また従来、道路トンネル、地下鉄の駅部、洞道の接合部
においては、ルーフシールド、拡幅シールド等の工法が
採用されているが、自由度が小さく、設計時の難点にな
っている。Conventionally, construction methods such as roof shields and widening shields have been adopted for road tunnels, subway stations, and tunnel joints, but the degree of freedom is small and this poses a problem during design.
「問題点を解決するための手段」
「第１発明」
互いに二基近接して併設したシールド機のスキンプレー
トの隣接部間に残部カッターを切り放し可能に設け、ま
たこの残部カッターの後方における前記併設シールド機
のスキンプレートの隣接部上を覆う円弧状の残部スキン
プレートを着脱自在に設け、この残部スキンプレートの
テール部下方における前記併設シールド機のスキンプレ
ートに切欠部を設け、前記併設シールド機により掘進と
同時に前記残部カッターにより前記併設シールド機の間
の残部土砂を掘削し前記併設シールド機によるトンネル
間を接合一体化したライニングを行うことにより、立坑
を構築することなく併設シールド機間に組立て解体自在
な残部カッター及び残部スキンプレートを設置するだけ
で分離した併設単線トンネルを円滑かつ経済的に接合さ
せることができるようにした工法を提案するものである
。"Means for Solving the Problems""FirstInvention" A remaining cutter is removably provided between adjacent parts of the skin plates of two shielding machines installed close to each other, and the above-mentioned adjacent cutter is provided behind the remaining cutter. A removable arc-shaped residual skin plate covering an adjacent portion of the skin plate of the shielding machine is provided, a notch is provided in the skin plate of the attached shielding machine below the tail of the residual skin plate, and At the same time as excavation, the remaining earth and sand between the attached shield machines is excavated using the remaining cutter, and the attached shield machines connect and integrate the lining between the tunnels, allowing assembly and disassembly between the attached shield machines without constructing a vertical shaft. This paper proposes a construction method that allows separate single-track tunnels to be joined together smoothly and economically by simply installing a flexible residual cutter and residual skin plate.
「第２発明」
第１発明により接合部を施工した後、残部カッター及び
併設シールド機のスキンプレートから切り放した残部ス
キンプレートを残置し、併設シールド機のスキンプレー
トにおける切欠部を封鎖した上で、各併設シールド機に
より単線トンネルに分岐して掘進することにより、接合
部の施工に引き続いて容易に分離した単線シールドトン
ネルを施工できるようにした工法を提案するものである
。"Second invention" After constructing the joint according to the first invention, leave the remaining cutter and the remaining skin plate cut from the skin plate of the attached shielding machine, seal the notch in the skin plate of the attached shielding machine, and then This project proposes a construction method that makes it possible to easily construct separate single-track shield tunnels following construction of joints by branching out into single-track tunnels using each shield machine.
「実施例」 以下この発明を図面に示す実施例について説明する。"Example" Embodiments of the present invention shown in the drawings will be described below.
「第１発明」
互いに二基僅少間隔で近接して併設したシールド機１．
１には、カッターフェース２の後方におけるスキンプレ
ート３の隣接部間に残部カッター４が設置されている。"First invention" Two shield machines installed close to each other with a slight interval 1.
1, a remainder cutter 4 is installed between adjacent parts of the skin plate 3 behind the cutter face 2.
残部カッター４は併設シールド機１．１による掘削部の
中間の極（狭い鼓型の残部を掘削できるものであればい
かなる構造のものでもよいが、例えば地層が比較的軟ら
かい土質であれば前部に突き崩し刃を持った円弧型の桝
目状あるいは櫛歯状の固定カッターが用いられ、鼓型の
残部の土砂の上下部を突き崩して残部全体を崩壊させる
。The remainder cutter 4 is the middle pole of the part excavated by the attached shield machine 1.1 (any structure may be used as long as it can excavate the remainder of a narrow drum shape, but for example, if the stratum is relatively soft, the front part An arc-shaped, square-shaped or comb-shaped fixed cutter with a break-down blade is used to break down the upper and lower parts of the remaining earth and sand of the drum shape, causing the entire remaining part to collapse.
残部カッター４の後方における併設シールド機１．１の
スキンプレート３の隣接部上には、この部分を覆う円弧
状の残部スキンプレート５が切り放し可能に連結され、
この残部スキンプレート５のテール部下方における併設
シールド機１．１のスキンプレート３にはそれぞれ相対
向して切欠部６が設けられ、これによってスキンプレー
ト３．３と残部スキンプレート５のテール部は二連山形
状をなして一連に解放され、この部分において併設シー
ルド機１．ｔによるトンネルを一体化する二連メガネ型
複合断面のライニング（セグメントの組立て、または現
場打ち覆工コンクリート打設）を行うようになっている
。On the adjacent part of the skin plate 3 of the annexed shielding machine 1.1 behind the remainder cutter 4, an arcuate remainder skin plate 5 covering this part is removably connected.
The skin plates 3 of the attached shielding machine 1.1 below the tail of the remaining skin plate 5 are provided with cutout portions 6 facing each other, so that the tail portions of the skin plate 3.3 and the remaining skin plate 5 are It is released in a series in a double mountain shape, and in this part the attached shield machine 1. Lining (assembling segments or pouring concrete on-site) is now being carried out with a double-barreled composite cross section that integrates the tunnel.
各併設シールド機１による単線トンネルの掘進に際して
は、切欠部６は封鎖プレート７で封鎖するようになって
いる。When each shielding machine 1 is used to excavate a single-track tunnel, the notch 6 is sealed with a sealing plate 7.
この場合、封鎖プレート７は、スキンプレート３内の切
欠部６付近にスライド自在に内蔵させて右き、随時スラ
イド移動させて切欠部６を開閉するように構成すること
ができる。In this case, the sealing plate 7 can be configured to be slidably built into the skin plate 3 in the vicinity of the notch 6 and turned to the right, and slid at any time to open and close the notch 6.
上記構成の併設シールド機１．１により単線トンネルを
併設して施工した後、それらを合流させて接合部を施工
する際には、シールド機１１間に残部カッター４及びそ
の後方に残部スキンプレート５を設置し、切欠部６の封
鎖板７を除去して開放する。After constructing a single track tunnel using the attached shielding machine 1.1 having the above configuration, when merging them and constructing a joint, the remaining cutter 4 is placed between the shielding machine 11 and the remaining skin plate 5 is placed behind it. is installed, and the sealing plate 7 of the notch 6 is removed to open it.
そして、併設シールド機１．１のカッターフェイス２に
より掘進すると同時に、残部カッター４により同時に掘
進し、スキンプレート３゜３と残部スキンプレート５の
一連のテール部において併・設シールド機１．１による
トンネル間を接合した二連メガネ型複合断面のライニン
グを行う。Then, at the same time as the cutter face 2 of the attached shield machine 1.1 excavates, the remaining cutter 4 simultaneously excavates, and the attached shield machine 1.1 excavates at the series of tail parts of the skin plate 3゜3 and the remaining skin plate 5. Lining is performed on a double-lensed composite cross-section that joins the tunnels.
「第２発明」
上記第１発明によって接合部を施工した後、単線トンネ
ルに分岐する際には、併設シールド機１．１のスキンプ
レート３から残部カッター４及び残部スキンプレート５
を切り放し、また併設シールド機１．１のスキンプレー
ト３における切欠部６を封鎖プレート７により封鎖した
上で、残部カッター４及び残部スキンプレート５を残置
した状態で、併設シールド機１．１により掘進し、分岐
した単線トンネル８を構築する。"Second invention" After constructing the joint according to the first invention, when branching into a single track tunnel, the remaining cutter 4 and the remaining skin plate 5 are used from the skin plate 3 of the attached shielding machine 1.1.
After cutting off the notch 6 in the skin plate 3 of the attached shield machine 1.1 with the sealing plate 7, excavation is carried out by the attached shield machine 1.1 with the remaining cutter 4 and the remaining skin plate 5 left in place. Then, a branched single-track tunnel 8 is constructed.
なお、単線トンネル８の施工に際しては、併設シールド
機１．１のスキンプレート３．３間に拡幅ジヤツキを設
置して、併設シールド機１１の側面を加圧し、併設間隔
を拡げながら掘進することも可能である。In addition, when constructing the single track tunnel 8, it is also possible to install a widening jack between the skin plates 3.3 of the attached shield machine 1.1, pressurize the side of the attached shield machine 11, and excavate while widening the distance between the attached shield machines. It is possible.
「発明の効果」
以上の通りこの発明によれば、地下鉄駅部とランニング
トンネル、あるいは道路トンネルの合流部と分岐部等、
二連メガネ型複合断面シールドから単線並列へ、または
単線並列から二連メガネ型複合断面シールドへの切り換
えが、場所・工事費等から困難な立坑を構築することな
く、一つのシールド機で一連に安全に施工することがで
きる。"Effects of the Invention" As described above, according to the present invention, subway station areas and running tunnels, or junctions and branching areas of road tunnels, etc.
Switching from a double-lens spectacle type compound cross-section shield to single wire parallel, or from single wire parallel to double-lens spectacle-type composite cross-section shield can be done in series with one shielding machine without the need to construct a vertical shaft, which is difficult due to space, construction costs, etc. It can be constructed safely.
第１図はこの発明に用いる複合断面シールド機の正面図
、第２図は同平面図、第３図はこの発明に用いるシール
ド機の単線施工の状態を示す平面図、第４図はこの発明
による施工状態を示す平面図、第５図１ａ） 、 （ｂ
）はこの発明によりｉ築した複合断面部及び単線部のト
ンネルを示す正面図である。
１・・併設シールド機、２・・カッターフェイス、３・
・スキンプレート、４・・残置カッター、５・・残置ス
キンプレート、６・・切欠部７・・封鎖プレート、８・
・単線トンネル。
第５図Fig. 1 is a front view of the composite section shielding machine used in this invention, Fig. 2 is a plan view thereof, Fig. 3 is a plan view showing the state of single wire construction of the shielding machine used in this invention, and Fig. 4 is this invention. A plan view showing the construction state according to Fig. 5 1a), (b
) is a front view showing a tunnel with a composite section and a single track section built according to the present invention. 1. Installed shield machine, 2. Cutter face, 3.
・Skin plate, 4.Remaining cutter, 5.Remaining skin plate, 6.Notch 7.Sealing plate, 8.
・Single track tunnel. Figure 5
Claims (1)
レートの隣接部間に残部カッターを切り放し可能に設け
、またこの残部カッターの後方における前記併設シール
ド機のスキンプレートの隣接部上を覆う円弧状の残部ス
キンプレートを着脱自在に設け、この残部スキンプレー
トのテール部下方における前記併設シールド機のスキン
プレートに切欠部を設け、前記併設シールド機により掘
進と同時に前記残部カッターにより前記併設シールド機
の間の残部土砂を掘削し、前記併設シールド機によるト
ンネルを接合一体化したライニングを行うことを特徴と
する複合断面シールド工法。 ２）互いに二基近接して併設したシールド機のスキンプ
レートの隣接部間に残部カッターを切り放し可能に設け
、またこの残部カッターの後方における前記併設シール
ド機のスキンプレートの隣接部上を覆う円弧状の残部ス
キンプレートを着脱自在に設け、この残部スキンプレー
トのテール部下方における前記併設シールド機のスキン
プレートに切欠部を設け、前記併設シールド機により掘
進と同時に前記残部カッターにより前記併設シールド機
の間の残部土砂を掘削し、前記併設シールド機によるト
ンネル間を接合一体化したライニングを行った後、前記
残部カッター及び前記併設シールド機のスキンプレート
から切り放した残部スキンプレートを残置し、前記併設
シールド機のスキンプレートにおける切欠部を封鎖した
上で、前記各併設シールド機により単線トンネルを分岐
して掘進することを特徴とする複合断面シールド工法。[Scope of Claims] 1) A remaining cutter is removably provided between adjacent portions of the skin plates of two shielding machines installed in close proximity to each other, and the skin plates of the adjacent shielding machines are provided adjacent to each other behind the remaining cutters. A removable arc-shaped residual skin plate covering the top of the section is provided, and a notch is provided in the skin plate of the attached shielding machine below the tail of the residual skin plate, so that at the same time as the attached shielding machine excavates, the residual cutter excavates. A composite cross-section shield construction method characterized by excavating the remaining earth and sand between the annexed shield machines, and lining the tunnel by joining and integrating the tunnel with the annexed shield machines. 2) A residual cutter is removably provided between the adjacent portions of the skin plates of the two shielding machines installed close to each other, and an arc-shaped cutter is provided behind the residual cutter to cover the adjacent portion of the skin plate of the shielding machine installed in parallel. A remaining skin plate is detachably provided, a notch is provided in the skin plate of the attached shield machine below the tail of the remaining skin plate, and at the same time as the attached shield machine excavates, the remaining part cutter is used to cut between the attached shield machines. After excavating the remaining earth and sand and performing joint and integrated lining between the tunnels using the attached shield machine, the remaining skin plate cut off from the remaining cutter and the skin plate of the attached shield machine is left behind, and the remaining skin plate is removed from the attached shield machine. A composite cross-section shield construction method, characterized in that the notch in the skin plate is sealed, and then the single-track tunnel is branched and excavated by each of the shield machines installed in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14732889A JP2554933B2 (en) | 1989-06-09 | 1989-06-09 | Composite section shield method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14732889A JP2554933B2 (en) | 1989-06-09 | 1989-06-09 | Composite section shield method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0313694A true JPH0313694A (en) | 1991-01-22 |
| JP2554933B2 JP2554933B2 (en) | 1996-11-20 |
Family
ID=15427700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14732889A Expired - Lifetime JP2554933B2 (en) | 1989-06-09 | 1989-06-09 | Composite section shield method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2554933B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0525996A (en) * | 1991-07-19 | 1993-02-02 | Sato Kogyo Co Ltd | Tunnel executing method for branching or joining lower road tunnels in two upper and lower road tunnels |
-
1989
- 1989-06-09 JP JP14732889A patent/JP2554933B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0525996A (en) * | 1991-07-19 | 1993-02-02 | Sato Kogyo Co Ltd | Tunnel executing method for branching or joining lower road tunnels in two upper and lower road tunnels |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2554933B2 (en) | 1996-11-20 |
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