JPS5921896A - Division propulsion type shield excavation method and its device - Google Patents
Division propulsion type shield excavation method and its deviceInfo
- Publication number
- JPS5921896A JPS5921896A JP13013782A JP13013782A JPS5921896A JP S5921896 A JPS5921896 A JP S5921896A JP 13013782 A JP13013782 A JP 13013782A JP 13013782 A JP13013782 A JP 13013782A JP S5921896 A JPS5921896 A JP S5921896A
- Authority
- JP
- Japan
- Prior art keywords
- shield
- shield piece
- piece
- propulsion
- division
- 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
Landscapes
- Excavating Of Shafts Or 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】
本発明は、シールドの推進反力をとり易くした分割推進
型シールド掘削方法と装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a divided propulsion type shield excavation method and apparatus that makes it easy to absorb the propulsion reaction force of the shield.
−・般に、軟弱地盤層でシールド工法を施行する際には
、軟弱な切羽を保護することが必要となる。- Generally, when implementing the shield method on soft ground, it is necessary to protect the soft face.
このため、切羽が軟弱であるときには密閉式シールド（
ブラインドシールド）工法が採用され、シールドの密閉
用仕切壁で切羽を押圧しながら掘削を進めることになる
。尚、シールドの推進力は、既に掘ったトンネル内のセ
グメントからの反力により得られる。For this reason, when the face is soft, a sealed shield (
The blind shield method was adopted, and the excavation proceeded while pressing the face with the sealing partition wall of the shield. Note that the propulsion force of the shield is obtained from the reaction force from the segment in the tunnel that has already been dug.
しかし、上記仕切壁の押し出し力で土を排出すると、ト
ンネル内に装着されたセグメントに対する推力が過大と
なり、反力がとりにくくなる問題がある。However, if the soil is discharged by the extrusion force of the partition wall, the thrust force on the segments installed in the tunnel becomes excessive, and there is a problem that it becomes difficult to absorb the reaction force.
本発明は、このような従来の問題を解消するためになさ
れたもので、既に掘ったトンネル内に装着されたセグメ
ントより推進反力を得易くする分割推進型シールド掘削
方法と装置を提供することを目的とする。The present invention has been made in order to solve such conventional problems, and provides a split propulsion type shield excavation method and device that makes it easier to obtain a propulsive reaction force from segments installed in an already excavated tunnel. With the goal.
以下、図面に示す実施例に基づいて本発明を説明する。The present invention will be described below based on embodiments shown in the drawings.
第１〜２図は本発明装置の第１実施例を示し、この装置
は円筒状のシールドを放射状に分割することにより形成
された複数のシールド片１と、各シールド片］を元の円
筒状に保持する保持部材２と、各シールド片１を個々に
独立的に推進させるため、各シールド片１に個々に取り
付けられたジヤツキのような推進駆動装置３とから構成
されている。また、本実施例では、各シールド片１間に
案内レール４が設けられている。1 and 2 show a first embodiment of the device of the present invention, and this device includes a plurality of shield pieces 1 formed by dividing a cylindrical shield radially, and each shield piece] into the original cylindrical shape. It is comprised of a holding member 2 that is held in place, and a propulsion drive device 3 such as a jack that is individually attached to each shield piece 1 in order to propel each shield piece 1 individually and independently. Further, in this embodiment, a guide rail 4 is provided between each shield piece 1.
」二記装置は、通常径トンネルＴ、の一部に拡大トンネ
ルＴ２ を掘削形成するためのものとして例示されて
おり、各シールド片１はトンネルＴ１ 用の１次セグ
メント５の外周で推進せしめられる。The device described in "2 is exemplified as a device for excavating and forming an enlarged tunnel T2 in a part of a normal diameter tunnel T, and each shield piece 1 is propelled by the outer periphery of the primary segment 5 for the tunnel T1. .
このシールド片１を推進させる力は、拡大トンネルＴ２
に装着した２次セグメント６をジヤツキ３が押圧す
るときの反力により得られる。尚、本実施例ではシール
ド片ｌが拡大トンネルＴ２ を形成するために作られ
ているので、各シールド片１の中央部７は中空となって
いるが、通常径トンネルＴ、 を掘削する場合には、
中央部７まで各シールド片１が延長される。The force that propels this shield piece 1 is the expansion tunnel T2
This is obtained by the reaction force when the jack 3 presses the secondary segment 6 attached to the. In this embodiment, the shield pieces 1 are made to form an enlarged tunnel T2, so the central part 7 of each shield piece 1 is hollow, but when excavating a normal diameter tunnel T, teeth,
Each shield piece 1 is extended to the central part 7.
上記の装置により掘削を行なう場合には、各シールド片
１を適宜選択して、別々に推進させる。When excavating with the above device, each shield piece 1 is appropriately selected and propelled separately.
２−
従って、セグメント６（又は５）には−へ度に過大な押
圧力が加わることがなく、セグメントの抵抗力が損われ
ず、セグメントから推進反力を得易くなる利点がある。2- Therefore, there is an advantage that an excessive pressing force is not applied to the segment 6 (or 5), the resistance force of the segment is not impaired, and it becomes easier to obtain a propulsive reaction force from the segment.
第３〜７図は本発明装置の第２実施例を示し、各シール
ド片１は外筒８と内筒９からなる保持部材中に保持され
ており、また各シールド片１には土砂を搬送するスクリ
ューコンベア１０が設けられている。スクリューコンベ
ア１０には油圧モーター１１が設けられている。また、
符号１２はスクリューコンベア羽根、１３はスクリュー
コンベア用ケゝ−ト、１４は外筒８をセグメント６に対
して推進させるための外筒摺動用ジヤツキ、１５はテー
ルパツキンを示す。3 to 7 show a second embodiment of the device of the present invention, each shield piece 1 is held in a holding member consisting of an outer cylinder 8 and an inner cylinder 9, and each shield piece 1 carries earth and sand. A screw conveyor 10 is provided. The screw conveyor 10 is provided with a hydraulic motor 11. Also,
Reference numeral 12 indicates a screw conveyor blade, 13 indicates a screw conveyor case, 14 indicates an outer cylinder sliding jack for propelling the outer cylinder 8 relative to the segment 6, and 15 indicates a tail packing.
この実施例の場合も、掘削時には各シールド片１が個々
に独立して推進される。尚、ジヤツキ３は外筒８に対し
てシールド片１を推進させる。Also in this embodiment, each shield piece 1 is individually and independently propelled during excavation. Note that the jack 3 propels the shield piece 1 against the outer cylinder 8.
第８〜９図は本発明装置の第３実施例を示し、各シール
ド片１には第２実施例と同様にスクリ・１−コンベア１
０が設けられているが、外筒８及び内筒９は省略されて
いる。この場合、ジヤツキ３は、２次セグメント６から
直接反力を得る。8 and 9 show a third embodiment of the device of the present invention, in which each shield piece 1 has a screen 1-conveyor 1 similar to the second embodiment.
0 is provided, but the outer cylinder 8 and the inner cylinder 9 are omitted. In this case, the jack 3 obtains a reaction force directly from the secondary segment 6.
第１０〜１１図は、本発明装置の第４実施例を示し、こ
の実施例は第３実施例の各シールド片１に２つのスクリ
ューコンベア１０を設けてなるものである。10 and 11 show a fourth embodiment of the apparatus of the present invention, in which two screw conveyors 10 are provided for each shield piece 1 of the third embodiment.
第１２〜１３図は、本発明装置の第５実施例を示し、こ
の実施例は第３実施例の各シールド片１に、回転式カッ
ター１６を設けてなるものである。12 and 13 show a fifth embodiment of the device of the present invention, in which a rotary cutter 16 is provided on each shield piece 1 of the third embodiment.
尚、第１２図のように、各シールド片１は各々の中央部
まで延長して、その中央部寄りの部分に適宜数のスクリ
ューコンベア１０を追加することも可能である。Incidentally, as shown in FIG. 12, each shield piece 1 may be extended to its center, and an appropriate number of screw conveyors 10 may be added to the portion closer to the center.
各実施例の説明から明らかなように、本発明によると筒
状のシールドを放射状に分割して複数のシールド片を形
成し、各シールド片毎に独立して推進させるので、推進
反力を発生させるセグメントの負担が軽くなり、推進反
力が得易くなる。また、各シールド片毎に掘削を行なう
ので、作業も分割して行なえ、能率が向上する。また、
軟弱地 ４−
盤層の掘進においては、各シールド片が夫々ブラインド
状態で推進することが可能であるので、切羽の保持に適
切に対処できる利点もある。更に、各シールド片が個々
に推進されるので、土質の異なりに応じて各推進駆動装
置の推進力を変えることができ、各シールド片の推進量
を補正することができる。従って、正しい掘削方向を常
に確保することが容易となる。As is clear from the description of each embodiment, according to the present invention, a cylindrical shield is divided radially to form a plurality of shield pieces, and each shield piece is independently propelled, so that a propulsion reaction force is generated. The burden on the segments that are driven is reduced, making it easier to obtain propulsive reaction force. Furthermore, since excavation is performed for each shield piece, the work can be divided into parts, improving efficiency. Also,
When excavating soft ground 4-board layer, each shield piece can be propelled in a blind state, which has the advantage of being able to appropriately deal with face retention. Furthermore, since each shield piece is propelled individually, the propulsive force of each propulsion drive device can be changed depending on the soil quality, and the amount of propulsion of each shield piece can be corrected. Therefore, it becomes easy to always ensure the correct excavation direction.
第１図は、本発明装置の第１実施例を示す概略縦断面図
、第２図は第１図の左側面図、第３図は第２実施例装置
の縦断面図、第４図は第３図の左側面図、第５図は第３
図の概略斜視図、第６図は第３図の−・部を省略した右
側面図、第７図は第６図の左側面図、第８図は第３実施
例装置の要部縦断面図、第９図は第８図の左側面図、第
１０図は第４実施例装置の要部縦断面図、第１１図は第
１０図の左側面図、第１２図は第５実施例装置の要部縦
断面図、第１３図は第１２図の左側面図である。
Ｔ１・・・通常径トンネル Ｔ２・・・拡大トンネル
１・・・シールド片 ２・・保持部材３・・・推
進駆動装置 ４・・・案内レール５・・・１次セグ
メント ６・・・２次セグメント７・・・中央部
８・・・外筒９・・・内筒
１０・・・スクリューコンベア】 １・・・油圧モー
ター ］ ２・・・スクリューコンベア羽根特許出
願人 玉井建設株式会社
７−
第１図
第２図FIG. 1 is a schematic vertical cross-sectional view showing a first embodiment of the device of the present invention, FIG. 2 is a left side view of FIG. 1, FIG. 3 is a vertical cross-sectional view of the second embodiment of the device, and FIG. Figure 3 is the left side view, Figure 5 is the 3rd side view.
6 is a right side view of FIG. 3 with the part omitted, FIG. 7 is a left side view of FIG. 6, and FIG. 8 is a vertical cross-section of the main part of the device of the third embodiment. 9 is a left side view of FIG. 8, FIG. 10 is a vertical sectional view of the main part of the device of the fourth embodiment, FIG. 11 is a left side view of FIG. 10, and FIG. 12 is the fifth embodiment. FIG. 13 is a longitudinal cross-sectional view of the main part of the device, and FIG. 13 is a left side view of FIG. 12. T1...Normal diameter tunnel T2...Enlarged tunnel 1...Shield piece 2...Holding member 3...Propulsion drive device 4...Guide rail 5...Primary segment 6...Secondary Segment 7...Central part
8...Outer cylinder 9...Inner cylinder
10...Screw conveyor] 1...Hydraulic motor] 2...Screw conveyor blade Patent applicant Tamai Construction Co., Ltd. 7- Figure 1 Figure 2
Claims (2)
成された個々のシールド片を元の筒状に保持すると共に
、各シールド片を適宜選択して独立的に推進させること
により切羽を掘削する分割推進型シールド掘削方法。(1) The individual shield pieces formed by dividing the cylindrical shield radially are held in their original cylindrical shape, and the face is excavated by appropriately selecting each shield piece and propelling it independently. Split propulsion shield drilling method.
成された複数のシールド片と、各シールド片を元の筒状
に保持する保持部材と、各シールド片を個々に独立的に
推進させるため、各シールド片に個々に取り付けられた
推進駆動装置とを具備する分割推進型シールド掘削装置
。(2) A plurality of shield pieces formed by dividing a cylindrical shield radially, a holding member that holds each shield piece in its original cylindrical shape, and a mechanism for independently propelling each shield piece. , and a propulsion drive device individually attached to each shield piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13013782A JPS5921896A (en) | 1982-07-26 | 1982-07-26 | Division propulsion type shield excavation method and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13013782A JPS5921896A (en) | 1982-07-26 | 1982-07-26 | Division propulsion type shield excavation method and its device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5921896A true JPS5921896A (en) | 1984-02-03 |
| JPS6216314B2 JPS6216314B2 (en) | 1987-04-11 |
Family
ID=15026838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13013782A Granted JPS5921896A (en) | 1982-07-26 | 1982-07-26 | Division propulsion type shield excavation method and its device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5921896A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60238599A (en) * | 1984-05-08 | 1985-11-27 | 株式会社小松製作所 | Enlarging shield drilling machine |
| JPS61274090A (en) * | 1985-05-30 | 1986-12-04 | 株式会社大林組 | Expansion shielding machine |
| JP2003293690A (en) * | 2003-05-15 | 2003-10-15 | Tobishima Corp | Large section shield excavating method |
-
1982
- 1982-07-26 JP JP13013782A patent/JPS5921896A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60238599A (en) * | 1984-05-08 | 1985-11-27 | 株式会社小松製作所 | Enlarging shield drilling machine |
| JPS61274090A (en) * | 1985-05-30 | 1986-12-04 | 株式会社大林組 | Expansion shielding machine |
| JP2003293690A (en) * | 2003-05-15 | 2003-10-15 | Tobishima Corp | Large section shield excavating method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6216314B2 (en) | 1987-04-11 |
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