JPS61122397A - Shield drilling machine - Google Patents

Shield drilling machine

Info

Publication number
JPS61122397A
JPS61122397A JP24225384A JP24225384A JPS61122397A JP S61122397 A JPS61122397 A JP S61122397A JP 24225384 A JP24225384 A JP 24225384A JP 24225384 A JP24225384 A JP 24225384A JP S61122397 A JPS61122397 A JP S61122397A
Authority
JP
Japan
Prior art keywords
screw conveyor
chamber
soil
screw
shield
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
Application number
JP24225384A
Other languages
Japanese (ja)
Inventor
萩本 博美
豊 加島
紀夫 近藤
勉 富沢
隆之 森田
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.)
TAIHO KENSETSU KK
Original Assignee
TAIHO KENSETSU KK
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 TAIHO KENSETSU KK filed Critical TAIHO KENSETSU KK
Priority to JP24225384A priority Critical patent/JPS61122397A/en
Publication of JPS61122397A publication Critical patent/JPS61122397A/en
Pending legal-status Critical Current

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】 (産業上の利用分野) 本発明は地中にトンネルの如き横坑を構築する際に用い
られるシールド掘進機に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a shield tunneling machine used when constructing a shaft such as a tunnel underground.

(従来技術) 従来、泥土加圧シールドのような土圧系シールドにおい
ては、第3図に示すように、掘削土をチャンバー4°内
より排出するにはスクリューコンベア17゛にて排出し
ていた。また礫対策では、礫を直接スクリューコンベア
17°で搬送し、その排土口18aから泥土と共に排出
する方法を採ってぃた。このため、予想される礫がスク
リューコンベア11゛を通過可能となるようにスクリュ
ーコンベアの羽根径、ピッチを設計していた。
(Prior art) Conventionally, in earth pressure shields such as mud pressure shields, as shown in Figure 3, excavated soil was discharged from within the 4° chamber using a 17° screw conveyor. . In addition, as a measure against gravel, a method was adopted in which the gravel was directly conveyed by a 17° screw conveyor and discharged together with mud from the soil discharge port 18a. For this reason, the blade diameter and pitch of the screw conveyor were designed so that the expected gravel could pass through the screw conveyor 11'.

また、特に大礫に対してはスクリューコンベア通過不可
能な大礫に遭遇した場合でもゲート15″を閉じ、チャ
ンバー4゛内と完全に遮断してスクリューコンベア17
°手前に設けたPJ溜め室11a゛で大礫を事前に取り
出すようにしていた。
In addition, especially when dealing with boulders, even if a boulder that cannot pass through the screw conveyor is encountered, the gate 15'' is closed and the inside of the chamber 4 is completely shut off.
The boulders were taken out in advance from the PJ storage chamber 11a, which was set up in the front.

(発明が解決しようとする問題点) しかし、スクリューコンベア17′はケーシング18゛
内にスクリュー羽根20’があるため、大礫などの大き
な固形物を排出しようとする場合、排出可能な大きさが
ケーシング内径に比べてかなり小さくなってしまう欠点
があった。また、スクリューコンベア通過不可能の大礫
に遭遇した場合でも礫溜め室17a°がスクリューコン
ベア17″の先端にあるため、作業員が作業するスペー
スが確保できない場合もでてくるといった欠点もあった
(Problem to be solved by the invention) However, since the screw conveyor 17' has screw blades 20' inside the casing 18', when trying to discharge large solids such as cobbles, the size that can be discharged is limited. The drawback was that it was considerably smaller than the inner diameter of the casing. In addition, even if a worker encounters cobblestones that cannot pass through the screw conveyor, the gravel storage chamber 17a° is located at the tip of the screw conveyor 17'', so there is a drawback that there may not be enough space for the worker to work. .

(問題点を解決するための手段) 本発明は上記の点に鑑み提案されたもので、その目的と
するところは、排出装置を、後方に向かって内径が大き
くなるテーパ管と、このテーパ管の後端に一体的に設け
たスクリューコンベアにて構成することにより、大礫な
どの大きな固形物であっても容易に排出することができ
、作業性の良好なシールド掘進機を提供することにある
(Means for Solving the Problems) The present invention has been proposed in view of the above points, and its object is to provide a discharge device with a tapered pipe whose inner diameter increases toward the rear, and a tapered pipe with an inner diameter that increases toward the rear. By constructing a screw conveyor integrated at the rear end, even large solid objects such as boulders can be easily discharged, thereby providing a shield excavator with good workability. be.

(発明の構成) 第1図は本発明の一実施例を示すもので、シールド掘進
機本体1はシールド筒2の前方に設けられた隔壁3によ
り切羽に対向するチャンバー4と坑内5側とに区画され
、かつチャンバー4内には回転可能な切羽を掘削するた
めの回転掘削具6が設けられ、かつ同チャンバー4には
内部の掘削土砂ないし泥土を外部に排出するための略直
線的に後方に立ち上って延びる排出装置7が接続されて
いる。
(Structure of the Invention) FIG. 1 shows an embodiment of the present invention, in which a shield tunneling machine main body 1 is connected to a chamber 4 facing a face and a mine 5 side by a partition wall 3 provided in front of a shield tube 2. A rotary excavator 6 for excavating a rotatable face is provided in the divided chamber 4, and the chamber 4 is provided with an approximately linear rearward part for discharging the excavated soil or mud inside the chamber 4 to the outside. A discharge device 7 is connected to the discharge device 7 and extends upwardly.

しかして、前記回転掘削具6は、例えば隔壁31   
   の後方に設けられた駆動モータ8により回転可能
で、かつ先端部にフィッシュテール状の中央掘削刃9が
設けられていると共に、内部に作泥土材注入管10を有
するセンターシャフト11と、このセンターシャツ1〜
11に放射状に取付けられ、かつ前方に多数の掘削刃1
2および後方に練混ぜ翼13が設けられたカッタースポ
ーク14にて構成されているが、他の!!Imの回転掘
削具であっても良いことは勿論である。
Therefore, the rotary excavating tool 6 is, for example, a partition wall 31.
A center shaft 11 is rotatable by a drive motor 8 provided at the rear of the center shaft 11, and is provided with a fishtail-shaped central excavation blade 9 at its tip, and has a mud material injection pipe 10 inside. Shirt 1~
11, and a large number of drilling blades 1 are installed in the front.
2 and a cutter spoke 14 provided with a kneading blade 13 at the rear, but other! ! It goes without saying that the rotary excavation tool of Im may also be used.

また、排出装置7は、前端がチャンバ−4内下部と連結
されていると共に、開閉自在なゲート15が設けられ、
かつ後方に向かって内径が順次拡大してい(と共に、後
方に向かって立ち上った中空  。
Further, the discharge device 7 has a front end connected to the lower part of the chamber 4, and is provided with a gate 15 that can be opened and closed.
The inner diameter gradually expands toward the rear (as well as the hollow space that rises toward the rear).

のテーパ管16と、このテーパ管16の4[に一体内、
かつ略直線的に後方に延びて設けられたスクリューコン
ベア11とを備え、前記テーパ管16の後方部には開閉
自在な蓋(図示せず)を有する礫溜め室16aが設けら
れ、 また、前記スクリューコンベア11は、円筒状を
なし、かつII端部下方に油圧式ジヤツキ19により開
閉自在な排土018aが設けられたケーシング18と、
このケーシング18内に回転可能に設けられた回転軸1
9と、この回転軸19と、この回転軸19′の外周上に
設けられたスクリュー羽根20と、前記ケーシング18
の後端に取付けられ、回転軸19′およびスクリュー羽
根20にてなるスクリューを回動させる駆動モータ21
にて構成されている。
The tapered pipe 16 is integrated with the tapered pipe 16,
and a screw conveyor 11 extending rearward in a substantially straight line, and a gravel storage chamber 16a having a cover (not shown) that can be opened and closed is provided at the rear of the tapered pipe 16; The screw conveyor 11 has a casing 18 which has a cylindrical shape and is provided with a discharge soil 018a that can be opened and closed by a hydraulic jack 19 below the II end.
Rotating shaft 1 rotatably provided within this casing 18
9, this rotating shaft 19, a screw blade 20 provided on the outer periphery of this rotating shaft 19', and the casing 18.
A drive motor 21 is attached to the rear end and rotates a screw consisting of a rotating shaft 19' and screw blades 20.
It is composed of.

なお、22は隔壁3の後方に設けられた推進用のシール
ドジヤツキ、23はシールド筒2の後端に設けられたテ
ールシール、24は掘進に伴なって順次組込まれたセグ
メントである。
In addition, 22 is a shield jack for propulsion provided at the rear of the partition wall 3, 23 is a tail seal provided at the rear end of the shield tube 2, and 24 is a segment that is sequentially assembled as the excavation progresses.

次に本発明の詳細な説明する。Next, the present invention will be explained in detail.

切羽の掘削は回転掘削具6によって行われる。Excavation of the face is performed by a rotary excavator 6.

しかして、掘削土がチャンバー4から排土用のテーパ管
16ヘスムーズに押し出される必要があり、そのために
掘削土を塑性流動化しなければならない。そこで地山が
軟弱な粘性土等の練り混ぜるだけで塑性流動化する土質
の場合には、カッター後方に取り付けた練混ぜ買13で
練り混ぜることにより塑性流動化し、一方、砂や砂礫の
場合には掘削した土砂に塑性流動性と不透水性を与える
べく作泥土材(ベントナイト・その溶液・粘土等)を、
作泥土材注入管10を介しセンターシャフト11先端か
ら噴出させて地山や掘削土砂に注入し、練混ぜ$113
で練り混ぜることにより塑性流動化と不透水性を持つ泥
土に変換し、これをチャンバー4とテーパ管16とスク
リューコンベア17内に充満する。
Therefore, the excavated soil must be smoothly pushed out from the chamber 4 to the tapered pipe 16 for soil removal, and for this purpose, the excavated soil must be plastically fluidized. Therefore, if the ground is soft and cohesive soil, etc., which can be plastically fluidized simply by mixing, it can be plastically fluidized by mixing with the mixing device 13 attached to the rear of the cutter.On the other hand, in the case of sand or gravel, In order to give plastic fluidity and impermeability to the excavated soil, mud materials (bentonite, its solution, clay, etc.) are used.
It is ejected from the tip of the center shaft 11 through the soil material injection pipe 10, injected into the ground or excavated soil, and mixed for $113.
By kneading the clay, it is converted to plastically fluidized and water-impermeable mud, and the chamber 4, tapered pipe 16, and screw conveyor 17 are filled with this mud.

そして、この状態を維持してシールドジヤツキ22の推
力によりチャンバー4内の泥土に泥土圧を発生させ、そ
の泥土圧を切羽に作用する地山の土圧および水圧に対抗
させて切羽を抑え、シールド機の掘進と排土のバランス
を図りながら掘進するものである。
Then, while maintaining this state, mud pressure is generated in the mud in the chamber 4 by the thrust of the shield jack 22, and the mud pressure is made to oppose the earth pressure and water pressure of the ground acting on the face to suppress the face. The excavation is carried out while maintaining a balance between the shield machine's excavation and soil removal.

すなわち、掘進時は、シールドジヤツキ22の推力によ
りチャンバー4内の掘削土に土圧がかつており、この圧
力によって掘削土は排土用のテーバ管1G内に入ってい
く。この場合、泥土は先に述べたように塑性流動性を持
った土であるので礫を含んだ土質の場合でも、一度、チ
ャンバー4からテーパ管16へ入ってしまうとテーパ管
16は後方に行くにしたがい管の内径が大きくなるので
、掘削土砂やN等が閉塞する心配は全くない。また、内
部にスクリュー羽根などがないために従前のスクリュー
コンベアなどに比べてより大きな玉石などが通過可能で
ある。しかして、掘削土はテーパ管16を通って更に後
方へ押し出され、後端部の通常のスクリューコンベア1
7内に充満される。この後端部のスクリューコンベア1
7も後方にきているため、従来取り付けられていたスク
リューコンベアよりも大きなスクリューコンベア17を
取り付けることができ、よって大きな固形物でも移送可
能であり、後方に移送された掘削土は排土018aから
外部に排出される。
That is, during excavation, earth pressure is applied to the excavated soil in the chamber 4 due to the thrust of the shield jack 22, and this pressure causes the excavated soil to enter the Taber pipe 1G for soil removal. In this case, as described above, mud has plastic fluidity, so even if the soil contains gravel, once it enters the tapered pipe 16 from the chamber 4, the tapered pipe 16 moves backward. Since the inner diameter of the pipe increases accordingly, there is no need to worry about clogging with excavated soil, N, etc. Additionally, since there are no screw blades inside, larger stones can pass through compared to conventional screw conveyors. Therefore, the excavated soil is pushed further backward through the tapered pipe 16, and the ordinary screw conveyor 1 at the rear end
It is filled within 7 days. This rear end screw conveyor 1
Since 7 is also located at the rear, it is possible to install a screw conveyor 17 that is larger than the conventionally installed screw conveyor, making it possible to transfer even large solid materials, and the excavated soil transferred to the rear is transferred from the dumped soil 018a. It is discharged to the outside.

なお、11端部スクリューコンベア通過不可能な大礫に
遭遇した場合、ゲート15を閉じチャンバー4と完全に
遮断して礫溜め室16aから大礫を取り出せば良い。
Incidentally, in the event that gravel that cannot pass through the end screw conveyor 11 is encountered, the gate 15 may be closed to completely isolate the chamber 4 and the gravel may be taken out from the gravel storage chamber 16a.

第2図は本発明の他の実施例を示すもので、この実施例
では後方に立ち上がって延びるテーパ管16の後端に略
水平方向に延びるスク9ューコンパ1フ1フ°8一体的
′″:月f′″ui″装置構成し″点1特徴を有してい
る。
FIG. 2 shows another embodiment of the present invention. In this embodiment, a screw 9 extending substantially horizontally is provided at the rear end of a tapered pipe 16 rising rearward. :The month f'"ui" device is configured and has one feature.

すなわち、スクリューコンベアはより多くのスクリュー
羽根のピッチ数があるほどより効果的な山留が発揮でき
る。しかし、スクリューコンベアのスクリュー羽根のピ
ッチ数を確保するためには隔壁3に排土装置を取り付け
る際、その取り付は角度を小さくすれば排土装置の長さ
を稼ぐ口とができ、排土装置がスクリューコンベアにて
なる場合、より多くのスクリュー羽根のピッチ数を得る
ことが可能となるが、従来に比ベセグメント組立位置が
後方に移動して機長が長くなゆ不経済となる問題点が派
生する。
In other words, the screw conveyor can exhibit more effective heap retention as the number of pitches of the screw blades increases. However, in order to secure the pitch number of the screw blades of the screw conveyor, when installing the soil removal device on the bulkhead 3, the installation angle should be made small, which will allow the length of the soil removal device to be increased. If the device uses a screw conveyor, it is possible to obtain a larger number of pitches for the screw blades, but compared to conventional methods, the segment assembly position moves to the rear, making the machine longer and uneconomical. is derived.

したがって、この実施例では、例えば地下水圧が高い場
合には、山留に必要なスクリュー羽根のピッチ数を確保
するため、スクリューコンベア17^を略水平に折曲げ
てスクリューコンベア17Aの山留効果をより効果的に
発揮させるようにしたものである。また、このように構
成することで小口径シールドの場合でも山留に必要なス
クリュー羽根のピッチ数を確保できるものである。
Therefore, in this embodiment, for example, when groundwater pressure is high, the screw conveyor 17^ is bent approximately horizontally to ensure the pitch number of the screw blades required for the dam, thereby increasing the dam effect of the screw conveyor 17A. This is to make it more effective. Further, with this configuration, even in the case of a small-diameter shield, the number of pitches of the screw blades required for the crest can be ensured.

なお、他の構成、作用は前述の実施例と同様であるので
省略する。
Note that the other configurations and operations are the same as those of the previous embodiment, so their description will be omitted.

(発明の効果) 以上の通り本発明によれば、チャンバー内の掘削土を排
出する排土装置を、後方に向かって内径が大きくなる中
空のテーパ管と、このテーバ管後端に一体的に設けたス
クリューコンベアとにて構成したから、前段の排土用の
テーバ管内にはスクリュー羽根などがなく、また、後段
のスクリューコンベアも管径の拡大したテーパ管の後端
に取付けるため、その分大きなスクリューコンベアとし
得、よって、従前のスクリューコンベアなどにてなる排
土装置に比べてより大きな玉石などを容易に排出でき、
かつ山留め作用をも得ることのできる利点がある。
(Effects of the Invention) As described above, according to the present invention, the earth removal device for discharging the excavated soil in the chamber is integrated with the hollow tapered pipe whose inner diameter increases toward the rear and the rear end of this Taper pipe. Because it is constructed with a screw conveyor, there are no screw blades in the Taber pipe for soil removal in the previous stage, and the screw conveyor in the latter stage is also installed at the rear end of the tapered pipe with an enlarged pipe diameter, so there is no need for screw blades etc. It can be used as a large screw conveyor, so it can easily discharge larger stones etc. compared to the conventional soil removal device using a screw conveyor.
It also has the advantage of providing a heap retaining effect.

なお、上記実施例ではいわゆる泥土加圧式シールドの場
合について説明したが、土圧バランスヤ泥漿シールドな
どの土圧系シールドにも適用し得ることは勿論である。
In the above embodiment, a so-called mud pressurized shield was described, but it goes without saying that the present invention can also be applied to an earth pressure shield such as an earth pressure balancer or mud shield.

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

第1図は本発明の一実施例、第2図は同上の他の実施例
、第3図は従来例である。
FIG. 1 shows one embodiment of the present invention, FIG. 2 shows another embodiment of the same, and FIG. 3 shows a conventional example.

Claims (1)

【特許請求の範囲】[Claims] チャンバー内の掘削土を排出する排土装置を、後方に向
かつて内径が大きくなる中空のテーパ管と、このテーパ
管後端に一体的に設けたスクリューコンベアとにて構成
したことを特徴とするシールド掘進機。
The soil removal device for discharging the excavated soil in the chamber is characterized by being composed of a hollow tapered pipe whose inner diameter increases toward the rear, and a screw conveyor integrally provided at the rear end of this tapered pipe. Shield excavator.
JP24225384A 1984-11-19 1984-11-19 Shield drilling machine Pending JPS61122397A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24225384A JPS61122397A (en) 1984-11-19 1984-11-19 Shield drilling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24225384A JPS61122397A (en) 1984-11-19 1984-11-19 Shield drilling machine

Publications (1)

Publication Number Publication Date
JPS61122397A true JPS61122397A (en) 1986-06-10

Family

ID=17086518

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24225384A Pending JPS61122397A (en) 1984-11-19 1984-11-19 Shield drilling machine

Country Status (1)

Country Link
JP (1) JPS61122397A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002081293A (en) * 2000-09-07 2002-03-22 Konoike Constr Ltd Shield machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002081293A (en) * 2000-09-07 2002-03-22 Konoike Constr Ltd Shield machine

Similar Documents

Publication Publication Date Title
CN212359762U (en) High-speed intelligent shield constructs machine
CN210564541U (en) Quick heading machine
CN111058852A (en) High-speed intelligent shield constructs machine
JPS61122397A (en) Shield drilling machine
JP3404653B2 (en) Shield machine
JPS5850297A (en) Shield excavator
JPH09303088A (en) Method for replacing cutter bit for shield machine
JPS6037400A (en) Horizontal auger for pebble ground
CN211974978U (en) Advanced grouting hole protecting, anti-blocking and dredging device and advanced grouting structure
JPH069112Y2 (en) Shield machine
JPS5891297A (en) Shielding excavator
JPH04203093A (en) Sludge pressure type shield machine
JPS58101997A (en) Method and apparatus for constructing traverse pit in underground
JPS63118493A (en) Method of shield tunnel underground docking construction
JP2024022355A (en) Tunnel excavator
JPS58501384A (en) Method and equipment for hydraulic drilling
JP2006249670A (en) Tunnelling machine
JPS62197597A (en) Shielding machine
JPH083352B2 (en) Installation replacement device for buried pipes
JPH05141189A (en) Semi-shield machine
JPH0144633Y2 (en)
JPS5985098A (en) Shield drilling machine
JP3174858B2 (en) Semi-shield machine and semi-shield method using this semi-shield machine
JP2003074294A (en) Horizontal hole excavator
JPS6192296A (en) Shield drilling machine