JP2934909B2 - Starting the shield machine - Google Patents
Starting the shield machineInfo
- Publication number
- JP2934909B2 JP2934909B2 JP19008490A JP19008490A JP2934909B2 JP 2934909 B2 JP2934909 B2 JP 2934909B2 JP 19008490 A JP19008490 A JP 19008490A JP 19008490 A JP19008490 A JP 19008490A JP 2934909 B2 JP2934909 B2 JP 2934909B2
- Authority
- JP
- Japan
- Prior art keywords
- reaction force
- shield machine
- starting
- force receiving
- reaction
- 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.)
- Expired - Fee Related
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は立坑内でシールドマシンを発進させる場合の
シールドマシンの発進方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for starting a shield machine when starting a shield machine in a shaft.
〈従来の技術〉 一般にシールドマシンは、シールドマシン後方の立坑
の壁面に反力受板を設置し、この反力受板を介して地山
から反力を得て発進している。<Conventional technology> Generally, a shield machine is installed with a reaction force receiving plate on the wall surface of a shaft behind the shield machine, and receives a reaction force from the ground through the reaction force receiving plate to start.
〈本発明が解決しようとする問題点〉 シールドマシンの発進反力を立坑の壁面から得る従来
技術にあってはつぎのような問題点がある。<Problems to be Solved by the Present Invention> There are the following problems in the related art in which the starting reaction force of the shield machine is obtained from the wall surface of the shaft.
〈イ〉 立坑の反力受板側に各種の既設構造物が存在す
る場合や地山が弱い場合には、シールドマシンの発進反
力を得難い。<B> When there are various existing structures on the reaction force receiving plate side of the shaft or when the ground is weak, it is difficult to obtain the starting reaction force of the shield machine.
このような場合は、既設構造物への影響がなくなるま
で立坑を発進側へずらしたり、或は軟弱地盤の補強を行
うなどの対策が必要となる。In such a case, it is necessary to take measures such as shifting the shaft to the starting side until the existing structure is no longer affected, or reinforcing the soft ground.
〈ロ〉 また立坑を移動するだけの用地がないときは、
施工効率の優れたシールド工法の採用が難しくなる。<B> If there is no land to move the shaft,
It becomes difficult to adopt a shield method with excellent construction efficiency.
〈ハ〉 シールドマシンの背面側に地山が存在しない場
合は、反力方向に地山を新たに構築するなどして対処し
なければならない。<C> If the ground does not exist on the back side of the shield machine, it must be dealt with by constructing a new ground in the direction of the reaction force.
〈本発明の目的〉 本発明は以上の点に鑑みて成されたもので、その目的
とするところは、シールドマシンの発進反力が得られな
い現場でも、簡易な施工で充分な発進反力を確保でき
る、シールドマシンの発進方法を提供することにある。<Object of the present invention> The present invention has been made in view of the above points, and the purpose thereof is to provide a sufficient starting reaction force with simple construction even in a site where the starting reaction force of the shield machine is not obtained. And to provide a method of starting a shield machine.
〈問題点を解決するための手段〉 すなわち本発明は着床部と反力部を直角に接続補強す
ると共に、前記着床部と反力部の間を補補強材で接続し
た反力受台を使用し、前記反力受台の着床部を発進立坑
の床部に設置してアンカーで固定し、反力受台の反力部
から反力を得てシールドマシンを発進することを特徴と
する。<Means for Solving the Problems> That is, the present invention reinforces the connection between the landing section and the reaction section at a right angle, and connects the landing section and the reaction section to each other with a supplementary reinforcing member. The landing part of the reaction receiving pedestal is installed on the floor of the starting shaft and fixed with an anchor, and the shield machine is started by obtaining the reaction force from the reaction part of the reaction receiving pedestal. And
〈本発明の説明〉 以下、図面を参照しながら本発明について説明する。<Description of the Present Invention> Hereinafter, the present invention will be described with reference to the drawings.
〈イ〉反力受台 第１図に反力受台１の全体の斜視図を示し、第２図に
反力受台１を立坑２に設置したときの側面図を示す。<A> Reaction Force Receiving Table FIG. 1 shows a perspective view of the entire reaction force receiving table 1, and FIG. 2 shows a side view when the reaction force receiving table 1 is installed in the shaft 2.
尚、本実施例では立坑２内の反力方向に地山が存在し
ない場合について説明する。In the present embodiment, a case where the ground does not exist in the reaction force direction in the shaft 2 will be described.
反力受台１は全体が⊥字形を呈し、矩形の着床部11
と、着床部11の途上から直角に突設した反力部12との一
体構造物からなる。The reaction force receiving table 1 has a rectangular shape as a whole, and has a rectangular landing portion 11.
And a reaction force portion 12 protruding at a right angle from the middle of the landing section 11.
反力部12はシールドマシン３の掘進ジャッキ或は別途
の発進用のジャッキの伸長力を直接受ける部材であるた
め、必要に応じて反力方向側の着床部11と反力部12との
間に補強材13を取り付け、反力部12の補強を図る。Since the reaction part 12 is a member directly receiving the extension force of the excavation jack of the shield machine 3 or a separate jack for starting, the reaction part 12 may be connected to the landing part 11 and the reaction part 12 on the reaction direction side as necessary. A reinforcing member 13 is attached between the reinforcing members to reinforce the reaction force portion 12.
また、反力部12の中央は開口14しておき、各種台車の
進行スペースや、配管スペースとして活用する。In addition, an opening 14 is provided at the center of the reaction force portion 12, and is used as a traveling space for various bogies and a piping space.
〈ロ〉反力受台の固定手段 単に反力受台１を立坑２の床部21に載置しただけで
は、シールドマシン３の発進時に後退してしまう。<B> Fixing means of reaction force receiving stand Simply placing reaction force receiving stand 1 on floor 21 of shaft 2 will cause retreat when shield machine 3 starts moving.
そこで、シールドマシン３の発進方向で斜め下方に向
けて複数の斜アンカー４群を設置し、斜アンカー４の基
端を反力受台１に固定する。Therefore, a plurality of diagonal anchors 4 are installed obliquely downward in the starting direction of the shield machine 3, and the base end of the diagonal anchor 4 is fixed to the reaction force receiving base 1.
また、反力受台１の浮上を防止するために複数の鉛直
アンカー５群を立坑２の床部21を貫通して縦方向に設け
る。Further, in order to prevent the reaction force receiving table 1 from floating, a plurality of vertical anchors 5 are provided in the vertical direction through the floor 21 of the shaft 2.
斜アンカー４や鉛直アンカー５は公知のアースアンカ
ーを使用し、その設置本数はシールドマシン３の発進に
必要な発進反力を考慮して決定する。A known earth anchor is used for the oblique anchor 4 and the vertical anchor 5, and the number of the anchors is determined in consideration of the starting reaction force required for starting the shield machine 3.
また、反力受台１には両アンカー４、５を定着するた
めの貫通孔14を分散して開設しておく。Further, through holes 14 for fixing the anchors 4 and 5 are dispersedly provided in the reaction force receiving table 1.
〈作用〉 第２図を基にシールドマシン３の発進方法について説
明する。<Operation> A method of starting the shield machine 3 will be described with reference to FIG.
〈イ〉反力受台のセット 立坑１の床部21に反力受台１を載置する。<B> Setting of the reaction force receiving table The reaction force receiving table 1 is placed on the floor 21 of the shaft 1.
つぎに、床部21を貫通して斜アンカー４と鉛直アンカ
ー５を地中に構築する。Next, the diagonal anchor 4 and the vertical anchor 5 penetrate the floor 21 and are constructed underground.
各アンカー４、５の基端は反力受台１上で緊張して定
着する。The base end of each of the anchors 4 and 5 is fixed on the reaction force receiving base 1 under tension.
〈ロ〉発進 つぎに坑口22側の着床部11にシールドマシン３を吊り
込む。<B> Start Next, the shield machine 3 is hung on the landing section 11 on the wellhead 22 side.
そしてシールドマシン３が具備する掘進用ジャッキな
どを伸長し、ジャッキの伸長力を反力受台１の反力部12
に伝えてシールドマシン３を発進させる。Then, the excavating jack and the like of the shield machine 3 are extended, and the extension force of the jack is applied to the reaction force portion 12 of the reaction force receiving table 1.
To start the shield machine 3.
シールドマシン３の発進反力は、反力受台１を介して
各アンカー４、５の引張力と、反力受台１と床部21間の
摩擦抵抗により支持される。The starting reaction force of the shield machine 3 is supported by the pulling forces of the anchors 4 and 5 and the frictional resistance between the reaction force receiving table 1 and the floor 21 via the reaction force receiving table 1.
〈その他の実施例１〉 また、立坑２内のシールジマシン３の背面側に軟弱地
山が存在する場合は、第３図に示すように反力受台１を
Ｌ字形に形成したものを用いると、背面の軟弱地盤に発
進反力を伝えずに、シールドマシン３を発進できる。<Other Example 1> When there is a soft ground on the back side of the seal machine 3 in the shaft 2, the reaction force receiving table 1 is formed in an L-shape as shown in FIG. 3. When used, the shield machine 3 can be started without transmitting the starting reaction force to the soft ground on the back side.
〈その他の実施例２〉 また、反力受台１の着床部11と床部21に対応する凹凸
を設けたり、摩擦抵抗の大きい素材を張り付けるなどし
て摩擦抵抗の増大を図ると、より大きな反力を確保でき
る。<Other Embodiment 2> Further, when the unevenness corresponding to the floor portion 11 and the floor portion 21 of the reaction force receiving table 1 is provided, or a material having a large frictional resistance is attached to increase the frictional resistance, Greater reaction force can be secured.
〈本発明の効果〉 本発明は以上説明したようになるから次の効果が得ら
れる。<Effects of the Present Invention> The present invention has the following effects.
〈イ〉 発進立坑が存在しない場合や、立坑内にシール
ドマシンの反力側に地山が存在しない場合や、反力側に
地山が存在しても既設構造物が存在したり、軟弱であっ
て反力を伝えられない場合であっても、シールドマシン
を確実に発進できる。<B> If there is no starting shaft, or if there is no ground on the reaction side of the shield machine in the shaft, or if there is an existing structure even if there is ground on the reaction side, Even if the reaction force cannot be transmitted, the shield machine can be started reliably.
〈ロ〉 本発明は単に反力受台をセットし、アンカーを
定着するだけでよい。<B> In the present invention, it is sufficient to simply set the reaction force receiving base and fix the anchor.
そのため、立坑の位置を変更したり、地山を新たに構
築する従来技術に比べ工期の短縮と施工コストの低減が
図れる。Therefore, the construction period can be shortened and the construction cost can be reduced as compared with the related art in which the position of the shaft is changed or the ground is newly constructed.
〈ハ〉 アンカーの設置本数により発進反力を自由に調
整できる。<C> The starting reaction force can be freely adjusted by the number of anchors installed.
〈ニ〉 各種台車の進行スペースや配管スペースが必要
な場合は、反力受台の反力部に開口を設けて利用でき
る。<D> When a traveling space or a piping space for various trucks is required, an opening can be provided in the reaction force portion of the reaction force receiving stand to be used.
この点、施工性と安全性の向上が著しい。 In this regard, workability and safety have been significantly improved.
第１図：補強材の一部を省略した反力受台の全体の斜視
図 第２図：反力受台をセットしたときの立坑の断面図 第３図：その他の実施例の説明図Fig. 1: Overall perspective view of reaction force receiving stand with a part of reinforcing material omitted Fig. 2: Cross section of vertical shaft when reaction force receiving stand is set Fig. 3: Explanatory view of other embodiments
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−112594（ＪＰ，Ａ) 特公 昭51−27922（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) E21D 9/06 301 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-112594 (JP, A) JP-B-51-27922 (JP, B2) (58) Fields investigated (Int. Cl. 6 , DB name) E21D 9/06 301
Claims (1)
に、前記着床部と反力部の間を補補強材で接続した反力
受台を使用し、 前記反力受台の着床部を発進立坑の床部に設置してアン
カーで固定し、 反力受台の反力部から反力を得てシールドマシンを発進
することを特徴とする、 シールドマシンの発進方法。A step of connecting and reinforcing the landing portion and the reaction force portion at a right angle, and using a reaction force receiving plate connected between the landing portion and the reaction force portion with a supplementary reinforcing material; A method for starting a shield machine, characterized in that the landing part of the shield machine is installed on the floor of a starting shaft, fixed with an anchor, and the shield machine is started by receiving a reaction force from a reaction part of a reaction force receiving stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19008490A JP2934909B2 (en) | 1990-07-18 | 1990-07-18 | Starting the shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19008490A JP2934909B2 (en) | 1990-07-18 | 1990-07-18 | Starting the shield machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0476190A JPH0476190A (en) | 1992-03-10 |
| JP2934909B2 true JP2934909B2 (en) | 1999-08-16 |
Family
ID=16252102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19008490A Expired - Fee Related JP2934909B2 (en) | 1990-07-18 | 1990-07-18 | Starting the shield machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2934909B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4524451B2 (en) * | 2001-07-26 | 2010-08-18 | 株式会社地域地盤環境研究所 | Starting method of shield excavator |
| WO2006003915A1 (en) * | 2004-07-02 | 2006-01-12 | Obayashi Corporation | Method of starting shield machine for tunnel construction method |
| JP5885229B2 (en) * | 2011-03-24 | 2016-03-15 | 株式会社奥村組 | Reaction force device |
| JP5781574B2 (en) * | 2013-09-03 | 2015-09-24 | 植村 誠 | Starting reaction device for open shield machine |
| JP5960784B2 (en) * | 2014-12-18 | 2016-08-02 | 植村 誠 | Open shield method |
| JP5999792B2 (en) * | 2015-04-22 | 2016-09-28 | 株式会社奥村組 | Construction method of reaction force device |
| CN110273691B (en) * | 2019-08-05 | 2024-06-18 | 中交路桥建设有限公司 | Reaction frame of shield tunneling machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5127922B2 (en) | 2008-05-30 | 2013-01-23 | 三菱電機株式会社 | Vehicle air conditioning system |
-
1990
- 1990-07-18 JP JP19008490A patent/JP2934909B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5127922B2 (en) | 2008-05-30 | 2013-01-23 | 三菱電機株式会社 | Vehicle air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0476190A (en) | 1992-03-10 |
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