JPH0254090A - Tunnel excavator - Google Patents
Tunnel excavatorInfo
- Publication number
- JPH0254090A JPH0254090A JP63204029A JP20402988A JPH0254090A JP H0254090 A JPH0254090 A JP H0254090A JP 63204029 A JP63204029 A JP 63204029A JP 20402988 A JP20402988 A JP 20402988A JP H0254090 A JPH0254090 A JP H0254090A
- Authority
- JP
- Japan
- Prior art keywords
- formwork
- thrust
- slider
- center member
- retaining
- 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.)
- Pending
Links
- 238000009415 formwork Methods 0.000 claims description 43
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 241001367851 Cingilia catenaria Species 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Lining And Supports For 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、トンネル掘進機に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to a tunnel boring machine.
従来、シールド工法に於けるトンネル施工は、シールド
機を掘進させながら上記シールド機の後方に搬入した既
製のセグメントを組立てて覆工を行なっていた。Conventionally, in tunnel construction using the shield method, lining was performed by assembling ready-made segments carried in behind the shield machine while the shield machine was digging.
このような方法によると、重量の極めて大きいセグメン
トの搬入並びに組立てに著しく手数がかかると共に、コ
ストの上昇原因となる問題があった。According to such a method, there is a problem in that it takes a considerable amount of time to carry in and assemble extremely heavy segments, and it also causes an increase in costs.
そこで、低価格なシールドトンネル工法が採用されてい
る。Therefore, the low-cost shield tunnel construction method is being adopted.
型枠の組立て並びに離型時の分解や移動に著しく手数が
かかってシールド掘進速度をあげることができない問題
があった。There was a problem in that the shield excavation speed could not be increased because assembling the formwork and disassembling and moving the formwork during mold release took a considerable amount of time and effort.
上記の課題を解決するために、この発明は末端に推力保
持装置を有するセンター部材と、このセンター部材の先
端に設けられた推力保持リングと、この推力保持リング
の前方に多数のシールドジヤツキを介し設けられたシー
ルド機と、前記センター部材をガイドとしてスライド自
在に設けられたスライダと、このスライダにジヤツキを
介し設けた分割式保型型枠と、この保型型枠の前縁全周
に後縁全周を突き合わせると共に、スライダにジヤツキ
を介し設けた分割式型枠と、推力保持リングにジヤツキ
を介し取付けた妻型枠部とで構成したものである。In order to solve the above problems, the present invention includes a center member having a thrust retention device at the end, a thrust retention ring provided at the tip of this center member, and a large number of shield jacks in front of the thrust retention ring. A shield machine is provided through the shield machine, a slider is provided so as to be slidable using the center member as a guide, a split type form-holding form is provided on this slider with jacks, and a shield is provided on the entire front edge of the form-holding form. It is composed of a split-type formwork whose rear edges are abutted all around and is attached to the slider with jacks, and an end formwork part which is attached to the thrust retaining ring via jacks.
既設ライニングコンクリートに推力保持装置及び保型型
枠をそれぞれ押し付けて定位置にセンター部材を保持さ
せ、又シールド機によって掘削された掘削部分の保型型
枠と、型枠と、妻枠部とで囲まれた空間にコンクリート
を打設する。The thrust holding device and the formwork are pressed against the existing lining concrete to hold the center member in place, and the formwork, formwork, and gable part of the excavated part excavated by the shield machine are used to hold the center member in place. Pour concrete into the enclosed space.
そして上記打設コンクリートの初期強度が得られたのち
型枠を脱型し、又保型型枠の押し付けを解除したのち、
スライダを前進させて上記型枠及び保型型枠を定位１迄
移動させる。After the initial strength of the poured concrete is obtained, the formwork is removed, and the pressure of the form-retaining formwork is released.
The slider is moved forward to move the formwork and the form-retaining formwork to position 1.
図示のようにセンター部材１の末端には、推力保持装置
２が設けられている。As shown in the figure, a thrust holding device 2 is provided at the end of the center member 1.
上記の推力保持装置２は、センター部材１の末端部から
放射状に突出するジヤツキ３の伸長作用により上記ジヤ
ツキ３の先端に支持させであるリング４を既設ライニン
グコンクリートＡに押し付けるようになっている。The thrust holding device 2 is configured to press a ring 4 supported at the tip of the jack 3 against the existing lining concrete A by the expansion action of the jack 3 projecting radially from the end of the center member 1.
又センター部材１の先端には、推力保持リング５が、又
この推力保持リング５の前方には、多数のシールドジヤ
ツキ６を介しシールド機７が設けられており、シールド
ジヤツキ６の伸長作用により前方にシールド機７を掘進
させる。Further, at the tip of the center member 1, a thrust retaining ring 5 is provided, and in front of this thrust retaining ring 5, a shield machine 7 is provided via a number of shield jacks 6, and the expansion action of the shield jacks 6 is provided. The shield machine 7 is made to dig forward.
更にセンター部材１には、前記センター部材１をガイド
としてジヤツキ３と推力保持リング５との間でスライド
するスライダ８が設けられている。Further, the center member 1 is provided with a slider 8 that slides between the jack 3 and the thrust retaining ring 5 using the center member 1 as a guide.
上記のスライダ８は、図示の場合センター部材１の外側
に嵌装した筒体により構成し、又センター部材１の外周
軸線方向に設けたラック９と、スライダ８に軸承したピ
ニオン１０とを噛み合わせ、モーター等の駆動機１）に
より上記ビニオン１０をドライブしてスライダ８をスラ
イドさせるようにしたが、その他の方法によってスライ
ドさせるようにしてもよい。In the illustrated case, the slider 8 described above is constituted by a cylindrical body fitted on the outside of the center member 1, and a rack 9 provided in the direction of the outer peripheral axis of the center member 1 is engaged with a pinion 10 supported on the slider 8. Although the slider 8 is caused to slide by driving the binion 10 by a drive device 1) such as a motor or the like, other methods may be used to make the slider 8 slide.
又リング４の前方には、スライダ８に放射状に配列した
ジヤツキ１２を介し支持させた保型型枠１３が設けられ
ている。Further, in front of the ring 4, a shape-retaining frame 13 is provided which is supported by the slider 8 via jacks 12 arranged radially.
上記の保型型枠１３は、図示の場合対向する前後縁を突
き合わせて前後に二個配置したが、数は限定されない。In the case of illustration, two of the above-mentioned shape-retaining form frames 13 are arranged front and rear with their opposing front and rear edges facing each other, but the number is not limited.
更に保型型枠１３の前側には、妻型枠部１４を有する型
枠１５がスライダ８に放射状に配列したジヤツキ１６を
介し設けられている。Further, on the front side of the shape-retaining formwork 13, a formwork 15 having an end formwork part 14 is provided on the slider 8 via jacks 16 arranged radially.
上記の型枠１５の後縁全周は、保型型枠１３の前縁全周
に突き合わさり、妻型枠部１４と型枠１５と、既設ライ
ニングコンクリートＡとで囲まれた空隙にコンクリート
ａを打設して、このコンクリートａが硬化すると既設ラ
イニングコンクリートＡとなる。The entire periphery of the rear edge of the formwork 15 is abutted against the entire periphery of the front edge of the formwork 13, and concrete a is placed in the gap surrounded by the end formwork 14, the formwork 15, and the existing lining concrete A. When this concrete a hardens, it becomes the existing lining concrete A.
前記の妻型枠部１４は、推力保持リング５から後方に突
出するジヤツキ２１を介し取付けられており、上記ジヤ
ツキ２１の伸長作用により妻型枠部１４で打設コンクリ
ートａを加圧する。。The end form part 14 is attached via a jack 21 that projects rearward from the thrust retaining ring 5, and the extension action of the jack 21 pressurizes the poured concrete a in the end form part 14. .
なお、第９図に示すように妻型枠部１４がら突出する筒
状部１７にジヤツキ２１の先端用Ｆｉ１８を筒状部１７
の係合部２０により抜けないよう嵌装すると共に、円板
１８と妻型枠部１４とに両端が当接するよう筒状部１７
にコイルスプリング１９を組み込んでおくと、無理なく
コンクリートを押し込み、かつ押し込み変圧荷重をなく
することができる。As shown in FIG. 9, the end Fi 18 of the jack 21 is attached to the cylindrical portion 17 that protrudes from the end frame 14.
The cylindrical portion 17 is fitted so as not to come off by the engaging portion 20 of
By incorporating the coil spring 19 into the concrete, it is possible to push the concrete in without force and eliminate the pushing transformation load.
又保型型枠１３及び型［１５は、第５図及び第６図に示
すように外周を所要数に分割すると共に、分割対向縁間
には、両側縁が開放する扁平筒体２２と、この扁平筒体
２２の両側から内側に嵌入したシール板２３と、この両
シール板２３間に介在するよう扁平筒体２２に組み込ん
だバネ２４とで構成したシール構造２５が設けである。In addition, the shape retaining formwork 13 and the mold [15 have their outer periphery divided into the required number of parts as shown in FIGS. A seal structure 25 is provided, which is comprised of seal plates 23 fitted inwardly from both sides of the flat cylinder 22 and a spring 24 built into the flat cylinder 22 so as to be interposed between both seal plates 23.
次に上記構成の掘進機を用いたトンネル施工方法を説明
する。Next, a tunnel construction method using the excavator having the above configuration will be explained.
まず、シールドジヤツキ６の伸長作用によって第１図か
ら第２図に示すようにシールド機７を掘進させる。First, the shield machine 7 is caused to dig as shown in FIGS. 1 and 2 by the extension action of the shield jack 6.
次にジヤツキ３によるリング４の押し付けを、ジヤツキ
１６．１２による型枠１５及び保型型枠１３の押し付け
を解除し、又シールドジヤツキ６の収縮作用によって推
力保持リング５と共にセンター部材１を第３図に示すよ
うに前進させる。Next, the pressing of the ring 4 by the jacks 3 and the pressing of the formwork 15 and the shape-retaining formwork 13 by the jacks 16 and 12 are released, and the contraction action of the shield jack 6 causes the center member 1 to move together with the thrust retaining ring 5. 3. Advance as shown in Figure 3.
その後にジヤツキ３．１２の伸長作用により既設ライニ
ングコンクリートＡにリング４及び保型型枠１３を押し
付け、又ジヤツキ１６の伸長作用により所定の位置に型
枠１５を押し戻す。Thereafter, the ring 4 and the formwork 13 are pressed against the existing lining concrete A by the extension action of the jacks 3.12, and the formwork 15 is pushed back to a predetermined position by the extension action of the jacks 16.
しかして上記型枠１５と妻型枠部１４及び既設ライニン
グコンクリートＡとで囲まれた空隙（第４図に示す）に
コンクリートａを打設する。Concrete a is then poured into a gap (shown in FIG. 4) surrounded by the formwork 15, the end formwork part 14, and the existing lining concrete A.
上記打設されたコンクリートａの硬化後上記掘進する作
業を繰り返す。After the poured concrete a has hardened, the digging operation described above is repeated.
以上のように、この発明に係るトンネル 臨進機によれ
ば、先端にシールド機付の推力保持リング、末端に推力
保持装置を有するセンター部材にスライダを設けて、こ
のスライダにジヤツキを介し保型型枠及び妻型枠部付の
型枠を設けであるので、シールド機の保持ジヤツキの収
縮作用により推力保持装置、保型型枠及び型枠の押し付
けを解除してスライダのスライドにより上記推力保持装
置、保型型枠及び型枠を同時移動させることができる。As described above, according to the tunnel advancing machine according to the present invention, a slider is provided in the center member having a thrust retaining ring with a shield device at the tip and a thrust retaining device at the end, and the slider is provided with a shape retaining ring through a jack. Since the formwork and the formwork with the end formwork part are provided, the thrust holding device, the form-holding formwork, and the pressing of the formwork are released by the contraction action of the holding jack of the shield machine, and the above-mentioned thrust is held by sliding the slider. The equipment, form-holding formwork and formwork can be moved simultaneously.
このため、既設ライニングコンクリートの覆工作業やコ
ンクリートの打設作業の能率を著しく短縮することがで
き、又保型型枠の移動に多くの人手を要した問題等をな
くすことができる。Therefore, the efficiency of the lining work for existing lining concrete and the work of placing concrete can be significantly reduced, and the problem of requiring a lot of manpower to move the retaining formwork can be eliminated.
図面はこの発明に係るトンネル掘進機を示すもので、第
１図から第４図は掘進工程の縦断側面図、第５図 は保
型型枠の正面図、第６図は型枠の正面図、第７図は型枠
の一部切欠側面図、第８図はシール装置の縦断拡大正面
図、第９図は妻型枠部の一部切欠拡大側面図である。
１・・・・・・センター部材、 ２・・・・・・推力保
持装置、３．６．１２．１６．２１・・・・・・ジヤツ
キ、４・・・・・・リング、 ５・・・・・・
推力保持リング、７・・・・・・シールド機、 ８
・・・・・・スライダ、Ｓ・・・・・・ラック、
１）・・・・・・駆動機、
１４・・・・・・妻型枠部、
１０・・・・・・ビニオン、
１３・・・・・・保型型枠、
１５・・・・・・型枠。The drawings show a tunnel excavating machine according to the present invention, and FIGS. 1 to 4 are longitudinal side views of the excavation process, FIG. 5 is a front view of the formwork, and FIG. 6 is a front view of the formwork. , FIG. 7 is a partially cutaway side view of the formwork, FIG. 8 is an enlarged longitudinal sectional front view of the sealing device, and FIG. 9 is a partially cutaway enlarged side view of the end frame portion. 1... Center member, 2... Thrust holding device, 3.6.12.16.21... Jacket, 4... Ring, 5...・・・・・・
Thrust retaining ring, 7... Shield machine, 8
......Slider, S...Rack, 1)...Driver, 14...Given formwork, 10...Binion, 13・・・・・・Standard formwork, 15・・・・・・Formwork.
Claims (1)
のセンター部材の先端に設けられた推力保持リングと、
この推力保持リングの前方に多数のシールドジャッキを
介し設けられたシールド機と、前記センター部材をガイ
ドとしてスライド自在に設けられたスライダと、このス
ライダにジャッキを介し設けた分割式保型型枠と、この
保型型枠の前縁全周に後縁全周を突き合わせると共に、
スライダにジャッキを介し設けた分割式型枠と、推力保
持リングにジャッキを介し取付けた妻型枠部とから成る
トンネル掘進機。(1) A center member having a thrust retention device at its end, a thrust retention ring provided at the tip of this center member,
A shield machine is installed in front of the thrust holding ring via a large number of shield jacks, a slider is provided to be slidable using the center member as a guide, and a split type retaining formwork is provided to the slider via jacks. , butt the entire circumference of the leading edge and the entire circumference of the trailing edge of this formwork, and
A tunnel excavator consisting of a split formwork attached to a slider via a jack, and a gable formwork attached to a thrust retaining ring via a jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63204029A JPH0254090A (en) | 1988-08-17 | 1988-08-17 | Tunnel excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63204029A JPH0254090A (en) | 1988-08-17 | 1988-08-17 | Tunnel excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0254090A true JPH0254090A (en) | 1990-02-23 |
Family
ID=16483580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63204029A Pending JPH0254090A (en) | 1988-08-17 | 1988-08-17 | Tunnel excavator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0254090A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60141999A (en) * | 1983-12-28 | 1985-07-27 | 中部電力株式会社 | Shield drilling method |
| JPS60141988A (en) * | 1983-12-28 | 1985-07-27 | 瀬谷 実 | Bucket type driller |
-
1988
- 1988-08-17 JP JP63204029A patent/JPH0254090A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60141999A (en) * | 1983-12-28 | 1985-07-27 | 中部電力株式会社 | Shield drilling method |
| JPS60141988A (en) * | 1983-12-28 | 1985-07-27 | 瀬谷 実 | Bucket type driller |
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