JPH0339158B2 - - Google Patents
Info
- Publication number
- JPH0339158B2 JPH0339158B2 JP10726084A JP10726084A JPH0339158B2 JP H0339158 B2 JPH0339158 B2 JP H0339158B2 JP 10726084 A JP10726084 A JP 10726084A JP 10726084 A JP10726084 A JP 10726084A JP H0339158 B2 JPH0339158 B2 JP H0339158B2
- Authority
- JP
- Japan
- Prior art keywords
- excavation
- excavator
- elliptical
- cutter
- casing
- 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
Links
- 238000009412 basement excavation Methods 0.000 claims description 32
- 238000000034 method Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【発明の詳細な説明】
(a) 発明の技術分野
本発明はシールド工法により、断面が楕円形状
のトンネル等を掘削する場合に使用するに好適
な、楕円シールド掘削機に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to an elliptical shield excavator suitable for use when excavating a tunnel or the like having an elliptical cross section by a shield method.
(b) 技術の背景
通常、シールド掘削機で掘削されるトンネルの
断面は円形のものがほとんどであるが、最近で
は、断面が楕円のトンネルに対する要望も強く、
こうした楕円形状のトンネルをシールド工法で掘
削し得るシールド掘削機の開発が望まれている。(b) Technical background Usually, most tunnels excavated by shield excavators have a circular cross section, but recently there has been a strong demand for tunnels with an elliptical cross section.
It is desired to develop a shield excavator that can excavate such elliptical tunnels using the shield method.
(c) 従来技術と問題点
従来、断面が楕円のトンネルを掘削し得るシー
ルド掘削機としては、１個の回転式カツタを掘削
方向に対して斜めに装着し、掘削方向正面から見
た場合にカツタ形状が楕円となるようにし、その
状態で掘り進む方式の機械が提案されている。し
かし、このように、カツタが掘削方向に斜めに装
着されると、掘削に際しての掘削機のバランスを
正しく掘削方向に維持することがむずかしく、複
雑な姿勢制御システムが必要となる欠点が有つ
た。(c) Conventional technology and problems Conventionally, as a shield excavator capable of excavating tunnels with an oval cross section, one rotary cutter is attached diagonally to the excavation direction, and when viewed from the front in the excavation direction, A machine has been proposed in which the shape of the cutter is elliptical and the machine digs in that state. However, when the cutter is mounted obliquely in the excavation direction as described above, it is difficult to maintain the balance of the excavator correctly in the excavation direction during excavation, and a complicated posture control system is required.
(d) 発明の目的
本発明は、上記事情に鑑み、断面が楕円のトン
ネルをシールド工法により、掘削機のバランスを
良好に維持した形で容易に掘削することが出来る
楕円形シールド掘削機を提供することを目的とす
るものである。(d) Purpose of the Invention In view of the above circumstances, the present invention provides an elliptical shield excavator that can easily excavate tunnels with an elliptical cross section using the shield method while maintaining good balance of the excavator. The purpose is to
(e) 発明の構成
即ち、本発明は、ケーシングの掘削方向に対し
て直角な断面を楕円形状に形成すると共に、前記
ケーシングに掘削方向正面側から見た形状が楕円
形のカツタを、その掘削面が掘削機の掘削方向に
対して直角になるように往復駆動自在に設けて構
成される。(e) Structure of the Invention That is, the present invention has an elliptical cross section perpendicular to the excavation direction of the casing, and a cutter having an elliptical shape when viewed from the front side in the excavation direction is attached to the casing. It is configured so that it can be driven reciprocally so that the surface is perpendicular to the excavation direction of the excavator.
(f) 発明の実施例
以下、図面に基づき、本発明の実施例を、具体
的に説明する。(f) Embodiments of the invention Hereinafter, embodiments of the invention will be specifically described based on the drawings.
第１図は本発明による楕円シールド掘削機の一
実施例を示す正面図、第２図は第１図の側断面図
である。 FIG. 1 is a front view showing an embodiment of an elliptical shield excavator according to the present invention, and FIG. 2 is a side sectional view of FIG. 1.
楕円シールド掘削機１は、第１図及び第２図に
示すように、掘削方向である矢印Ｄ，Ｅ方向に対
して直角な方向の断面が楕円形のケーシング２を
有しており、ケーシング２の第２図左端面、即ち
掘削正面２ａにはカツタ３が、カツタ３に接続さ
れた油圧ジヤツキ１０により、第１図左右方向に
往復駆動自在に設けられている。カツタ３はその
掘削面３ｃが掘削機１の掘削方向、即ち矢印Ｄ方
向に対して直角になるように装着されており、ま
た矢印Ａ方向、即ち掘削方向正面側から見た形
が、ケーシング２の外形よりもカツタ３の往復ス
トロークに相当するだけ僅かに小さい楕円形であ
る。カツタ３のの表面には多数のスリツト３ａが
穿設されており、スリツト３ａの周囲には、多数
のビツト３ｂが形成されている。 As shown in FIGS. 1 and 2, the elliptical shield excavator 1 has a casing 2 with an elliptical cross section in a direction perpendicular to the directions of arrows D and E, which are the excavation directions. A cutter 3 is provided on the left end surface in FIG. 2, that is, on the excavation front surface 2a, so that it can be driven back and forth in the left-right direction in FIG. 1 by a hydraulic jack 10 connected to the cutter 3. The cutter 3 is installed so that its excavation surface 3c is perpendicular to the excavation direction of the excavator 1, that is, the direction of arrow D, and the shape of the cutter 3 when viewed from the front side in the direction of arrow A, that is, the direction of excavation, is the casing 2. It has an elliptical shape that is slightly smaller than the outer shape of the cutter 3 by an amount corresponding to the reciprocating stroke of the cutter 3. A large number of slits 3a are formed on the surface of the cutter 3, and a large number of bits 3b are formed around the slits 3a.
楕円シールド掘削機１は、以上のような構成を
有するので、楕円シールド掘削機１により断面が
楕円形のトンネル６を掘削する場合には、トンネ
ル６の掘削方向がケーシング２の掘削正面２ａを
向けて、油圧ジヤツキ１０を駆動し、カツタ３を
掘削機１の掘削方向に対して直角の方向である矢
印Ｂ，Ｃ方向に往復駆動させる。この際、ケーシ
ング２に、図示しない油圧ジヤツキ等により、ト
ンネル６の掘削方向である矢印Ｄ方向に所定の掘
削圧力をかけると、トンネル６の切羽６ａが往復
するカツタ３のビツト３ｂにより掘削され、トン
ネル６はその断面が楕円形状に掘削される。こう
して、カツタ３により、ケーシング２をＤ方向に
進行させつつ掘削を継続してゆくと、あとには断
面楕円形のトンネル６が形成される。 Since the elliptical shield excavator 1 has the above configuration, when the elliptical shield excavator 1 excavates a tunnel 6 having an elliptical cross section, the excavation direction of the tunnel 6 should face the excavation front 2a of the casing 2. Then, the hydraulic jack 10 is driven to reciprocate the cutter 3 in the directions of arrows B and C, which are perpendicular to the excavation direction of the excavator 1. At this time, when a predetermined excavation pressure is applied to the casing 2 in the direction of arrow D, which is the excavation direction of the tunnel 6, by a hydraulic jack or the like (not shown), the face 6a of the tunnel 6 is excavated by the reciprocating bit 3b of the cutter 3, The tunnel 6 is excavated to have an elliptical cross section. In this way, when excavation is continued while the casing 2 is moved in the direction D by the cutter 3, a tunnel 6 having an oval cross section is formed.
なお、この際、掘削機１に切羽６ａ側から作用
する力は、カツタ３の掘削面３ｃが掘削方向であ
るＤ方向に対して直交していることから、Ｄ方向
に対して180゜反対方向、即ち矢印Ｅ方向に作用
し、従つて掘削機１に対して、掘削機１を掘削方
向から第２図上下方向にずらそうとする有害な力
が作用することは無い。 At this time, the force acting on the excavator 1 from the face 6a side is 180° opposite to the D direction because the excavation surface 3c of the cutter 3 is perpendicular to the D direction, which is the excavation direction. , that is, in the direction of arrow E, and therefore no harmful force acts on the excavator 1 that would tend to displace the excavator 1 from the excavation direction in the vertical direction in FIG. 2.
(g) 発明の効果
以上、説明したように、本発明によれば、ケー
シング２の掘削方向に対して直角な断面を楕円形
状に形成すると共に、前記ケーシング２に掘削方
向正面側から見た形状が楕円形のカツタ３を、そ
の掘削面３ｃが掘削機１の掘削方向、即ち矢印Ｄ
方向に対して直角になるように往復駆動自在に設
けたので、掘削機１に、掘削機１をその掘削方向
に対してずらそうとする有害な力が作用すること
が無く、断面が楕円のトンネルをシールド工法に
より、機械のバランスを良好な状態に保持したま
ま容易に掘削することが出来、最近の楕円断面の
トンネルの掘削の要請に答え得る良好な楕円シー
ルド掘削機１の提供が可能となる。(g) Effects of the Invention As described above, according to the present invention, the cross section of the casing 2 perpendicular to the excavation direction is formed into an elliptical shape, and the casing 2 has a shape when viewed from the front side in the excavation direction. is an oval cutter 3, and its excavation surface 3c is in the excavation direction of the excavator 1, that is, arrow D.
Since it is installed so that it can be driven reciprocally at right angles to the excavation direction, there is no harmful force acting on the excavator 1 that would tend to displace the excavator 1 with respect to the excavation direction. It is possible to provide an excellent elliptical shield excavator 1 that can easily excavate tunnels while keeping the balance of the machine in good condition by using the shield method, and that can meet the recent demands for excavating tunnels with elliptical cross sections. Become.
第１図は本発明による楕円シールド掘削機の一
実施例を示す正面図、第２図は第１図の側断面図
である。
１……楕円シールド掘削機、２……ケーシン
グ、３……カツタ、３ｃ……掘削面、Ｄ……掘削
方向。
FIG. 1 is a front view showing an embodiment of an elliptical shield excavator according to the present invention, and FIG. 2 is a side sectional view of FIG. 1. 1...Oval shield excavator, 2...Casing, 3...Katsuta, 3c...Drilling surface, D...Drilling direction.
Claims (1)
て、 前記ケーシングの掘削方向に対して直角な断面
を楕円形状に形成すると共に、 前記ケーシングに掘削方向正面側から見た形状
が楕円形のカツタを、その掘削面が掘削機の掘削
方向に対して直角になるように往復駆動自在に設
けて構成した楕円シールド掘削機。[Scope of Claims] 1. In a shield excavator having a casing, the cross section of the casing perpendicular to the excavation direction is formed into an elliptical shape, and the casing is provided with a cutter having an oval shape when viewed from the front side in the excavation direction. An elliptical shield excavator comprising: which can be driven reciprocally so that its excavation surface is perpendicular to the excavation direction of the excavator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10726084A JPS60250197A (en) | 1984-05-25 | 1984-05-25 | Oval shield drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10726084A JPS60250197A (en) | 1984-05-25 | 1984-05-25 | Oval shield drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60250197A JPS60250197A (en) | 1985-12-10 |
| JPH0339158B2 true JPH0339158B2 (en) | 1991-06-12 |
Family
ID=14454536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10726084A Granted JPS60250197A (en) | 1984-05-25 | 1984-05-25 | Oval shield drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60250197A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0781504B2 (en) * | 1988-11-22 | 1995-08-30 | 大成建設株式会社 | Rotating cutter type shield machine |
-
1984
- 1984-05-25 JP JP10726084A patent/JPS60250197A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60250197A (en) | 1985-12-10 |
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