JPS6136500A - Shielding cement for tunnel with guide ring - Google Patents

Shielding cement for tunnel with guide ring

Info

Publication number
JPS6136500A
JPS6136500A JP15739684A JP15739684A JPS6136500A JP S6136500 A JPS6136500 A JP S6136500A JP 15739684 A JP15739684 A JP 15739684A JP 15739684 A JP15739684 A JP 15739684A JP S6136500 A JPS6136500 A JP S6136500A
Authority
JP
Japan
Prior art keywords
tunnel
guide ring
segments
shield
guide
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
Application number
JP15739684A
Other languages
Japanese (ja)
Other versions
JPS6344920B2 (en
Inventor
小磯　文洋
明彦 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Construction Co Ltd
Kajima Corp
Original Assignee
Mitsui Construction Co Ltd
Kajima Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Construction Co Ltd, Kajima Corp filed Critical Mitsui Construction Co Ltd
Priority to JP15739684A priority Critical patent/JPS6136500A/en
Publication of JPS6136500A publication Critical patent/JPS6136500A/en
Publication of JPS6344920B2 publication Critical patent/JPS6344920B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は既設のトンネル径を拡大させるためのガイドリ
ング付トンネル用シールドセグメントに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tunnel shield segment with a guide ring for expanding the diameter of an existing tunnel.

（従来の技術） 既設のトンネル径を拡大させるため本出願人は先に特願
昭５７−２１５．３３２号をもって既設トンネルの拡大
予定区域の両端に周方向に沿ってガイドリングを取付け
、該リング間のシールドセグメントの一部を直線上に剥
離し、該剥離部の地山を拡大掘削して基地空洞を形成し
、該空洞内に存してガイドリング間に外周掘削用のシー
ルド掘進機の両側に設けた係合片を係合して該掘進機の
ガイドリングに沿った前進により拡大させるようにした
拡大シールド掘削工法を提案した。(Prior Art) In order to expand the diameter of an existing tunnel, the present applicant previously applied for Japanese Patent Application No. 57-215.332 by installing guide rings along the circumferential direction at both ends of the area to be expanded in the existing tunnel. A part of the shield segment between them is peeled off in a straight line, and the ground in the peeled part is expanded and excavated to form a base cavity. We have proposed an expansion shield excavation method in which the excavator is expanded by engaging engaging pieces provided on both sides and moving the excavator forward along the guide ring.

（発明が解決しようとする問題点） しかしかかる掘削工法においては、そのガイドリングは
拡大予定区域の両端に存するセグメントとこれに接する
他のセグメントとの境界に配設しなければならず、その
配設に困難を来たす問題点が存した。(Problem to be Solved by the Invention) However, in such an excavation method, the guide ring must be placed at the boundary between the segment existing at both ends of the area to be expanded and other segments in contact with it. There were problems that caused difficulties in the installation.

（問題点を解決するための手段） 本発明はか嘔る問題点を解消することを目的としたもの
（、拡大予定区域両端のシールドセグメントに、該セグ
メントの組立によりガイドリングを形成するガイド溝を
一体に形成したことを特徴とする。(Means for Solving the Problems) The present invention aims to solve the above problems (i.e., guide grooves are provided in the shield segments at both ends of the planned expansion area to form guide rings by assembling the segments). It is characterized by being integrally formed.

に実施例） 以下本発明を図面に基づいて説明すると（１）はトンネ
ルを示し、該トンネル（１）はセグメント（２）をもっ
て形成され、該トンネル（１）の拡大予定区域の両端の
セグメント（２ａ）には、その組立によってその外周に
ガイドリング（３）を形成すべきガイド溝（３ａ）が第
４図に示すように形成されている。(Examples) The present invention will be described below based on the drawings. (1) shows a tunnel, the tunnel (1) is formed with segments (2), and the segments (1) at both ends of the planned expansion area of the tunnel (1) 2a) is formed with a guide groove (3a) on the outer periphery of which a guide ring (3) is to be formed when assembled, as shown in FIG.

そしてトンネル（１）は、その拡大予定区域の両端のセ
グメント（２ａ）　（２ａ）＠のセグメント（２）　（
２）・・・を直線上に剥離し、該剥離部の地山を拡大掘
削して基地空洞（４）を形成し、該空洞（４）内に存し
て両端セグメント（２ａ）（２ａ）に形成されるガイド
リング（３）　（３）に保合片（５）　（５）を介して
係合される外周掘削用のシールド掘進機（６）と、同じ
くガイドリング（３）　（３）に図示しない保合片を介
して係合される二次セグメント（７）とを前後に連結し
、該二次セグメント（７）の背面をジヤツキ（８）によ
り加圧することにより掘進１　（Ｂ）を順次ガイドリン
グ（３）　（３）に沿ってトンネル（１）の周方向に掘
進し、その掘進する掘進機（６）の接方に、順次二次セ
グメント（７）を連続固着することにより拡大トンネル
を形成するようにした。図中（９）はトンネル（１）内
のコンクリートを示す。The tunnel (1) is constructed by segment (2a) (2a) @ segment (2) (
2)... is peeled off on a straight line, and the base cavity (4) is formed by enlarging and excavating the ground in the peeled part, and both end segments (2a) (2a) are located inside the cavity (4). A shield excavator (6) for outer circumferential excavation is engaged with the guide ring (3) (3) formed in the guide ring (3) (3) via the retaining piece (5) (5), and the same guide ring (3) (3) Excavation 1 (B) is carried out by connecting the secondary segment (7) that is engaged with the front and back through a retaining piece (not shown) and pressurizing the back surface of the secondary segment (7) with a jack (8). By sequentially excavating in the circumferential direction of the tunnel (1) along the guide ring (3) (3), and successively fixing the secondary segments (7) in tangent to the excavating machine (6). Now forms an expanding tunnel. (9) in the figure shows the concrete inside the tunnel (1).

（発明の効果） このように本発明によるときはトンネル（１）の拡大予
定区域の両端のシールドセグメント（２ａ）に、組立に
よりガイドリング（３）を形成するガイド溝（３ａ）を
一体に形成したものであるからガイドリング（３）は、
拡大予定区域の両端のシールドセグメント（２ａ）（２
ａ）の組立により形成されるため、上述した先願のよう
にガイドリングを別個に配設するものの繁雑さをなくし
てその組立作業を著しく簡便にすることができ、又上述
の別個のガイドリングを組立るものでは該リング間の既
設のセグメントを必ず解体する必要があったが、本発明
によるときは、シールド掘進機（８）の掘進に伴い必ず
しもリング（３）　（３）間の既設セグメント（２）■
・・・の解体を必要としないばかりか、解体しないこと
によってセグメントのリングとしての構造上の安全を保
つことが可能で、従来の掘進機による拡大掘進に伴うセ
グメントの補強が不必要となる等の効果を有する。(Effects of the Invention) According to the present invention, guide grooves (3a) that form guide rings (3) by assembly are integrally formed in the shield segments (2a) at both ends of the area to be expanded in the tunnel (1). Therefore, the guide ring (3) is
Shield segments (2a) (2) at both ends of the planned expansion area
Since it is formed by the assembly of a), it is possible to eliminate the complexity of separately arranging the guide ring as in the above-mentioned earlier application, and to significantly simplify the assembly work, and the above-mentioned separate guide ring However, in the case of the present invention, the existing segments between the rings (3) (3) must be dismantled as the shield excavator (8) excavates. (2)■
Not only does it not require the dismantling of ..., but by not dismantling it, it is possible to maintain the structural safety of the ring of segments, and there is no need to reinforce the segments when enlarging the excavation using conventional excavators. It has the effect of

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は拡大予定区域両端のセグメントの斜面図、第２
図は本発明のセグメントを用いた工法の斜面図、第３図
は第２図のＡ−Ａｌｉｌｌｉ面図、第４図は第３図のＢ
−Ｂ線断面図である。 （２ａ）・・・シールドセグメント （３）・・・ガイドリング （３ａ）・・・ガイド溝Figure 1 is a slope view of the segments at both ends of the planned expansion area;
The figure is a slope view of the construction method using the segments of the present invention, Figure 3 is a view from A-Alilli in Figure 2, and Figure 4 is B in Figure 3.
-B sectional view. (2a)...Shield segment (3)...Guide ring (3a)...Guide groove

Claims (1)

【特許請求の範囲】[Claims] 拡大予定区域両端のシールドセグメントに、該セグメン
トの組立によりガイドリングを形成するガイド溝を一体
に形成したことを特徴とするガイドリング付トンネル用
シールドセグメント。1. A shield segment for a tunnel with a guide ring, characterized in that the shield segments at both ends of the planned expansion area are integrally formed with guide grooves that form a guide ring by assembling the segments.
JP15739684A 1984-07-30 1984-07-30 Shielding cement for tunnel with guide ring Granted JPS6136500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15739684A JPS6136500A (en) 1984-07-30 1984-07-30 Shielding cement for tunnel with guide ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15739684A JPS6136500A (en) 1984-07-30 1984-07-30 Shielding cement for tunnel with guide ring

Publications (2)

Publication Number Publication Date
JPS6136500A true JPS6136500A (en) 1986-02-21
JPS6344920B2 JPS6344920B2 (en) 1988-09-07

Family

ID=15648714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15739684A Granted JPS6136500A (en) 1984-07-30 1984-07-30 Shielding cement for tunnel with guide ring

Country Status (1)

Country Link
JP (1) JPS6136500A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63110391A (en) * 1986-10-29 1988-05-14 三井建設株式会社 Method of circumferential shield excavation construction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63110391A (en) * 1986-10-29 1988-05-14 三井建設株式会社 Method of circumferential shield excavation construction

Also Published As

Publication number Publication date
JPS6344920B2 (en) 1988-09-07

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