JP3412066B2 - Initial excavation method of shield machine - Google Patents
Initial excavation method of shield machineInfo
- Publication number
- JP3412066B2 JP3412066B2 JP19381096A JP19381096A JP3412066B2 JP 3412066 B2 JP3412066 B2 JP 3412066B2 JP 19381096 A JP19381096 A JP 19381096A JP 19381096 A JP19381096 A JP 19381096A JP 3412066 B2 JP3412066 B2 JP 3412066B2
- Authority
- JP
- Japan
- Prior art keywords
- shield machine
- shield
- jack
- push
- 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.)
- Expired - Lifetime
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、シールド機の初期
掘進方法に関するものである。
【０００２】
【従来の技術】従来のシールド機の初期掘進方法では、
シールド発進用の立坑内に搬入したシールド機の後方
に、掘削土搬出兼機材搬入用の開口部を備えた仮組みセ
グメントもしくは仮支保工を設置し、これを反力受けに
して、シールド機内で順次、セグメントを組み立てつ
つ、シールドジヤッキでシールド機を推進している。
【０００３】ところで、この従来技術の問題点は、反力
受け設備（仮組みセグメントもしくは仮支保工）を立坑
内で組み立てる作業が比較的面倒であること、シールド
機の初期掘進完了後にシールド機の推進に伴いシールド
機内で組み立てたセグメントで不要になったもの（立坑
内に残ったもの）を解体・撤去する作業が比較的面倒で
あること、開口部が反力受け設備のみにあるので掘削土
搬出や資機材搬入の施工性が悪いことである。
【０００４】
【発明が解決しようとする課題】本発明が解決しようと
する課題は、前述の従来技術の問題点が解消され、立坑
内の作業が比較的簡単であるとともに、掘削土搬出や資
機材搬入の施工性が良好で、シールド工事の能率向上が
期待できるシールド機の初期掘進方法を提供することに
ある。
【０００５】
【課題を解決するための手段】前記課題を解決するため
に、本発明のシールド機の初期掘進方法（以下、本発明
の方法という）では、シールド機発進用の立坑内に、シ
ールド機と押輪と元押しジヤッキ装置を搬入し、シール
ド機内に組立・形成したセグメントリングの後方突出端
に、押輪を多数のボルトで取り付けた後、元押しジヤッ
キでシールド機を推進し、シールド機の推進に伴い、元
押しジヤッキと押輪との間に順次、掘削土搬出兼資機材
搬入用の開口部を設けたストラットを挿入し、シールド
機の全体が地中に入ってからは、シールド機内で順次、
セグメントを組み立てつつ、シールドジヤッキでシール
ド機を推進するようにしている。
【０００６】すなわち、本発明の方法では、シールド機
の全体が地中に入るまでの推進は、推進工法と同様に元
押しジヤッキで行い、その後の推進は、シールドジヤッ
キで行うようにしている。
【０００７】
【発明の実施の形態】図面に基づいて本発明の方法の一
実施態様を説明すると、先ず、シールド発進用の立坑１
内に、シールド機２と押輪３と元押しジヤッキ装置４を
搬入し、次いで、シード機２内でセグメントを組み立て
て、複数のセグメントリング５を形成し、このセグメン
トリング５の後方突出端に押輪３を多数のボルト６で連
結して、この押輪３でセグメントリング５を真円状態に
保持するとともに、セグメントリング５の前端にシール
ドジヤッキ７のロッド端を当接する（図１参照）。
【０００８】なお、元押しジヤッキ装置４は架台８に複
数の元押しジヤッキ９を設置して成るが、架台８を左右
に分割し、その間に開口部を形成するのが好ましい。
【０００９】以上のように準備した後、元押しジヤッキ
９でシールド機２を推進し、シールド機２の推進に伴
い、順次、元押しジヤッキ９と押輪３との間に、図４に
例示するような上方に開口部を設けたストラット１０を
挿入する。
【００１０】図２は、シールド機２を以上のようにして
坑口１１から地中に推進し、シールド機２の全体が地中
に入った段階を示しており、この段階以後は、シールド
機２内でセグメントリング５の前方に順次、セグメント
を組み立てつつ、シールドジヤッキ７でシールド機２を
推進する。
【００１１】この間、シールド機１で掘削した土の搬出
やレール等の諸機材の搬入は、ストラット１０の連設に
より形成される大きな開口部を通して行う。
【００１２】そして、セグメント自体でシールドジヤッ
キ７の反力が受けられるようになるとシールド機１の初
期掘進は完了であり、それ以後、押輪３や元押しジヤッ
キ装置４を撤去し、シールド機１の本格的な掘進を行
う。Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an initial excavation method for a shield machine. [0002] In the conventional initial excavation method of a shield machine,
A temporary assembly segment or temporary support with an opening for carrying out excavated soil and carrying equipment is installed behind the shield machine brought into the shaft for starting the shield. The shield machine is being promoted with a shield jack while assembling the segments sequentially. [0003] The problems of the prior art are that the work of assembling the reaction force receiving equipment (temporary assembly segment or temporary support) in the shaft is relatively complicated, It is relatively troublesome to dismantle and remove unnecessary segments (remaining in the shaft) of the segments assembled in the shield machine due to the propulsion, and the excavated soil is because the opening is only in the reaction force receiving equipment The workability of unloading and loading equipment is poor. [0004] The problem to be solved by the present invention is to solve the above-mentioned problems of the prior art, to make the work in the shaft relatively simple, to carry out excavated soil, and to reduce the capital. It is an object of the present invention to provide an initial method of excavating a shield machine which has good workability for carrying in equipment and is expected to improve efficiency of shield work. In order to solve the above-mentioned problems, an initial excavation method for a shield machine according to the present invention (hereinafter, referred to as a method of the present invention) includes a shield shaft inside a shaft for starting the shield machine. After loading the machine, push wheel and main push jack device, attaching the press wheel with many bolts to the rear protruding end of the segment ring assembled and formed in the shield machine, propelling the shield machine with the main push jack, Along with the propulsion, insert struts with openings for excavated soil removal and material equipment sequentially between the main push jack and the pressing wheel, and after the entire shield machine enters the ground, Sequentially
While assembling the segment, the shield machine is propelled by the shield jack. That is, in the method of the present invention, the propulsion until the entire shield machine enters the ground is performed by the original pushing jack, as in the propulsion method, and the subsequent propulsion is performed by the shield jack. . DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method of the present invention will be described with reference to the drawings.
The shield machine 2, the press wheel 3, and the original pushing jack device 4 are carried into the inside, and then the segments are assembled in the seed machine 2 to form a plurality of segment rings 5. 3 are connected by a number of bolts 6, the segment ring 5 is held in a perfect circular state by the pressing ring 3, and the rod end of the shield jack 7 abuts on the front end of the segment ring 5 (see FIG. 1). The main jack device 4 comprises a plurality of main jacks 9 mounted on a gantry 8. It is preferable to divide the gantry 8 into right and left portions and form an opening therebetween. After the preparation as described above, the shield machine 2 is propelled by the original pushing jack 9, and the propulsion of the shielding machine 2 sequentially places between the original pushing jack 9 and the pressing wheel 3 as shown in FIG. The strut 10 having such an upper opening is inserted. FIG. 2 shows a stage in which the shield machine 2 is propelled into the ground from the wellhead 11 as described above, and the entire shield machine 2 has entered the ground. The shield machine 2 is propelled by the shield jack 7 while sequentially assembling the segments in front of the segment ring 5. During this time, unloading of soil excavated by the shield machine 1 and loading of various equipment such as rails are performed through a large opening formed by the continuous connection of the struts 10. When the reaction force of the shield jack 7 can be received by the segment itself, the initial excavation of the shield machine 1 is completed. Thereafter, the pressing wheel 3 and the main push jack device 4 are removed and the shield machine 1 is removed. Do full-scale excavation.
【図面の簡単な説明】
【図１】本発明の方法におけるシールド機の推進開始時
の状態を示す断面図である。
【図２】同じく、シールド機の全体が地中に入った段階
を示す断面図である。
【図３】押輪とその取り付け態様を例示する拡大断面図
である。
【図４】ストラットとその設置態様を例示する拡大断面
図である。
【符号の説明】
１：立坑、２：シールド機、３：押輪、４：元押しジヤ
ッキ装置、５：セグメントリング、６：ボルト、７：シ
ールドジヤッキ、８：架台、９：元押しジヤッキ、１
０：ストラット、１１：坑口。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a state at the start of propulsion of a shield machine in a method of the present invention. FIG. 2 is a cross-sectional view showing a stage in which the entire shield machine has entered the ground. FIG. 3 is an enlarged cross-sectional view illustrating a pressing wheel and its mounting mode. FIG. 4 is an enlarged cross-sectional view illustrating a strut and an installation mode thereof. [Description of Signs] 1: Vertical shaft, 2: Shield machine, 3: Push wheel, 4: Main push jack device, 5: Segment ring, 6: Bolt, 7: Shield jack, 8: Stand, 9: Main push jack, 1
0: strut, 11: wellhead.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) E21D 9/06 301 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) E21D 9/06 301
Claims (1)
機と押輪と元押しジヤッキ装置を搬入し、シールド機内
に組立・形成したセグメントリングの後方突出端に、押
輪を多数のボルトで取り付けた後、元押しジヤッキでシ
ールド機を推進し、シールド機の推進に伴い、元押しジ
ヤッキと押輪との間に順次、掘削土搬出兼資機材搬入用
の開口部を設けたストラットを挿入し、シールド機の全
体が地中に入ってからは、シールド機内で順次、セグメ
ントを組み立てつつ、シールドジヤッキでシールド機を
推進することを特徴とするシールド機の初期掘進方法。(57) [Claims] [Claim 1] A shield machine, a press wheel, and a main push jack device are carried into a shaft for starting a shield machine, and the rear end of a segment ring assembled and formed in the shield machine is provided. After attaching the push ring with many bolts, the shield machine is propelled with the original push jack, and the opening for excavated soil removal and material equipment carry-in between the original push jack and the push wheel in accordance with the promotion of the shield machine. The initial excavation of a shield machine characterized by inserting a strut provided with a shield machine, and after the whole shield machine enters the ground, assembling segments sequentially in the shield machine and propelling the shield machine with a shield jack Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19381096A JP3412066B2 (en) | 1996-06-20 | 1996-06-20 | Initial excavation method of shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19381096A JP3412066B2 (en) | 1996-06-20 | 1996-06-20 | Initial excavation method of shield machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH108877A JPH108877A (en) | 1998-01-13 |
| JP3412066B2 true JP3412066B2 (en) | 2003-06-03 |
Family
ID=16314148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19381096A Expired - Lifetime JP3412066B2 (en) | 1996-06-20 | 1996-06-20 | Initial excavation method of shield machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3412066B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4958042B2 (en) * | 2007-02-15 | 2012-06-20 | 清水建設株式会社 | How to start a shield machine |
| CN104141497B (en) * | 2014-07-22 | 2016-05-11 | 中国葛洲坝集团基础工程有限公司 | A kind of shield machine translation tune reaction frame installation method that starts |
| JP7339197B2 (en) * | 2020-03-25 | 2023-09-05 | 株式会社奥村組 | Shield excavator main pushing device and initial excavation method for shield excavator |
-
1996
- 1996-06-20 JP JP19381096A patent/JP3412066B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH108877A (en) | 1998-01-13 |
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