JPS603199Y2 - Shield type tunnel excavator - Google Patents
Shield type tunnel excavatorInfo
- Publication number
- JPS603199Y2 JPS603199Y2 JP14522380U JP14522380U JPS603199Y2 JP S603199 Y2 JPS603199 Y2 JP S603199Y2 JP 14522380 U JP14522380 U JP 14522380U JP 14522380 U JP14522380 U JP 14522380U JP S603199 Y2 JPS603199 Y2 JP S603199Y2
- Authority
- JP
- Japan
- Prior art keywords
- soil
- screw conveyor
- tank
- removal
- stage
- 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
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【考案の詳細な説明】
シールド式トンネル掘削機においては第１図に示すよう
に、掘削機ａ内に配置されたスクリュウコンベヤｂによ
って掘削土砂の掘削機後方への搬送と、スクリュウコン
ベヤｂのケーシング内に螺施状に填充された掘削土砂帯
による止水効果が図られている。[Detailed description of the invention] As shown in Figure 1, in a shield type tunnel excavator, excavated soil is transported to the rear of the excavator by a screw conveyor b placed inside the excavator a, and the casing of the screw conveyor b is The water-stopping effect is achieved by the excavated earth and sand belt filled in a spiral shape.
一般に排土用スクリュウコンベヤの大きさは、掘削土砂
量に見合うように設計されるが、掘削土砂中に粗大礫等
を含む場合、前記スクリュウコンベヤはこれらの粗大礫
の通過可能な大きさを必要とし、掘削土砂量と関係なく
大型となる。Generally, the size of a screw conveyor for soil removal is designed to match the amount of excavated soil, but if the excavated soil contains coarse gravel, etc., the screw conveyor needs to be large enough to allow these coarse gravel to pass through. Therefore, the size will be large regardless of the amount of excavated soil.
このようなスクリュウコンベヤは、削土密封式シールド
機の如＜、スクリュウコンベヤによって掘削排土量と排
出土砂量との調節をして良好な掘削状態を維持しようと
する機構においては好ましくなく、更にスクリュウコン
ベヤ内体積が必要以上に大きくなり、スクリュウコンベ
ヤケーシング内の土砂帯による止水ゾーンの形成上、不
利になるという欠点が生じる。Such a screw conveyor is undesirable in a mechanism such as an earth excavation sealed shield machine where the screw conveyor is used to adjust the amount of excavated earth and the amount of discharged earth to maintain good excavation conditions. This has the drawback that the internal volume of the screw conveyor becomes larger than necessary, which is disadvantageous in terms of formation of a water-stopping zone by the sand belt within the screw conveyor casing.
本案はこのような欠点を除去するために提案されたもの
であって、土砂搬送量を異にする第１段及び第２段の両
排土用スクリュウコンベヤを連設するとともに、同周ス
クリュウコンベヤの中間に添加材注入混合装置及び礫除
去槽を具えた中間土槽を介装してなることを特徴とする
シールド式トンネル掘削機に係るものである。This project was proposed in order to eliminate these drawbacks, and it consists of installing screw conveyors for both the first stage and second stage, which have different amounts of soil conveyed, in series, as well as installing screw conveyors around the same circumference. This invention relates to a shield type tunnel excavator characterized in that an intermediate earth tank equipped with an additive injection mixing device and a gravel removal tank is interposed between the two.
本案は前記のように構成されているので、第１段の排土
用スクリュウコンベヤを地山中の粗大礫を搬送可能な大
きさに形成することにより、シールド機外で粗大礫の処
理を可能ならしめ、作業の安全性を向上しうるものであ
る。Since this project is configured as described above, by forming the first stage earth removal screw conveyor to a size that can transport coarse gravel in the ground, it is possible to process coarse gravel outside the shield machine. This can improve work safety.
而して前記第１段の排土用スクリュウコンベヤで搬送さ
れた粗大礫を含む掘削土を同スクリュウコンベヤと第２
段の排土用スクリュウコンベヤとの間に介装された中間
土槽に搬送貯留し、同中間土槽に配設された礫除去槽に
よって粗大礫を除去する一方、添加材注入混合装置によ
って中間土槽に添加材を注入混合して中間土槽中の掘削
土砂の止水性を向上するとともに、第１段の排土用スク
リュウコンベヤ内の自由水流を阻止するものである。Then, the excavated soil containing coarse gravel transported by the first screw conveyor for soil removal is transferred to the same screw conveyor and the second screw conveyor.
The coarse gravel is transported and stored in an intermediate soil tank interposed between the screw conveyor for soil removal at the stage, and coarse gravel is removed by a gravel removal tank installed in the intermediate soil tank, while the intermediate soil is removed by an additive injection and mixing device. Additives are injected and mixed into the soil tank to improve the water-stopping properties of the excavated soil in the intermediate soil tank, and to prevent free water flow in the first-stage soil removal screw conveyor.
前記のように粗大礫の除去された掘削土は第２段の排土
用スクリュウコンベヤによって搬送されることになり、
従って同スクリュウコンベヤは掘削土量に見合った搬送
能力を有する大きさでよ＜、同スクリュウコンベヤ内の
止水ゾーンの形成上有利である。As mentioned above, the excavated soil from which coarse gravel has been removed will be transported by the second-stage soil removal screw conveyor.
Therefore, it is advantageous for the screw conveyor to have a size that has a conveying capacity commensurate with the amount of excavated soil, in order to form a water stop zone within the screw conveyor.
而して本案においては第１段及び第２段の両排土用スク
リュウコンベヤの搬送量に差があるように構成されてい
るので、前記中間土槽中に適当な土庄が生起され、更に
同種に注入混合された添加材との相乗作用によって不透
水ゾーンが形成され、掘削土砂によるバルブ効果が保持
され、第１段の排土用スクリュウコンベヤから切羽部の
切羽圧力を保持しうるものである。In this case, since the first and second stage screw conveyors are configured to have different conveyance amounts, an appropriate amount of soil is generated in the intermediate soil tank, and further soil removal of the same type is created in the intermediate soil tank. An impermeable zone is formed by the synergistic effect with the additives injected into the excavated soil, which maintains the valve effect of the excavated soil and maintains the face pressure at the face from the first-stage soil removal screw conveyor. .
以下本案の図示の実施例について説明する。The illustrated embodiment of the present invention will be described below.
シールド式トンネル掘削機内に、第１段の排土用スクリ
ュウコンベヤ１及び第２段の排土用スクリュウコンベヤ
２が直列に配設され、両方の中間に中間土槽３が介装さ
れている。A first-stage soil removal screw conveyor 1 and a second-stage soil removal screw conveyor 2 are arranged in series in a shield type tunnel excavator, and an intermediate soil tank 3 is interposed between the two.
図中４，５は夫々前記各排土用スクリュウコンベヤ１，
２の排土口に配設され、夫々ゲート開閉ジヤツキ４′。In the figure, 4 and 5 are the screw conveyors 1 and 5, respectively, for soil removal.
A gate opening/closing jack 4' is provided at each of the soil discharge ports 2 and 4'.
５′によって開閉操作されるゲート、６，７は夫々前記
各スクリュウコンベヤ１，２の駆動装置である。Gates 5' are opened and closed, and gates 6 and 7 are drive devices for the screw conveyors 1 and 2, respectively.
前記中間槽３にはストップバルブ８′の介装された添加
材注入管８が接続されるとともに、礫除去槽９が附設さ
れ、同種９にはゲート開閉ジヤツキ１０′によって開閉
操作されるゲート１０が配設されている。An additive injection pipe 8 equipped with a stop valve 8' is connected to the intermediate tank 3, and a gravel removal tank 9 is also attached thereto. is installed.
図中１１は礫除去槽９における礫取出口に配設された開
閉蓋である。In the figure, reference numeral 11 denotes an opening/closing lid disposed at the gravel removal port of the gravel removal tank 9.
なお前記第１段の排土用スクリュウコンベヤ１は地山中
の最大粒径の粗大礫を搬送できる大きさに形成され、第
２段の排土用スクリュウコンベヤ２は掘削土量に見合っ
た搬送能力を有する大きさに形成されている。The first-stage earth removal screw conveyor 1 is formed to a size that can convey coarse gravel with the maximum particle size in the earth, and the second-stage earth removal screw conveyor 2 has a conveyance capacity commensurate with the amount of excavated soil. It is formed to have a size.
而して前記第１段の排土用スクリュウコンベヤ１を駆動
してシールド式トンネル掘削機の掘進に伴なう粗大礫を
含む全ての掘削土砂を搬送し、中間土槽３に一時貯留す
るとともに、添加材注入管８から添加材を注入して掘削
土砂と混合し、中間土槽３内の止水性の向上を図るとと
もに、これに伴ない第１段の排土用スクリュウコンベヤ
１内の自由水流を阻止する。Then, the first stage soil removal screw conveyor 1 is driven to convey all the excavated soil including coarse gravel caused by the excavation of the shield type tunnel excavator, and temporarily store it in the intermediate soil tank 3. , the additive is injected from the additive injection pipe 8 and mixed with the excavated soil to improve the water-stopping property in the intermediate soil tank 3, and also to improve the freedom in the first-stage soil removal screw conveyor 1. Block water flow.
この際前記礫除去槽９のゲート１０の開閉を行って、中
間槽３に貯留された粗大礫を礫除去槽９に導入し、槽外
に除去する。At this time, the gate 10 of the gravel removal tank 9 is opened and closed, and the coarse gravel stored in the intermediate tank 3 is introduced into the gravel removal tank 9 and removed from the tank.
かくして中間槽３で粗大礫の除去された掘削土砂は第２
段の排土用スクリュウコンベヤ２によって搬出され、同
排土用スクリュウコンベヤ２の圧密作用で優れた止水ゾ
ーンが形成される。In this way, the excavated soil from which coarse gravel has been removed in the intermediate tank 3 is transferred to the second tank.
The soil is carried out by the soil discharge screw conveyor 2 of the stage, and an excellent water stop zone is formed by the consolidation action of the soil discharge screw conveyor 2.
この際同排土用スクリュウコンベヤ２は前記第１段の排
土用スクリュウコンベヤ１より土砂搬送能力が小である
ため、中間土槽３中に適当な土圧を生じ、前記添加材注
入の相乗作用により不透水性ゾーンが形成され、土砂に
よるバルブ効果が保持され、第１段の排土用スクリュウ
コンベヤからの切羽部の切羽圧力を保持しうるものであ
る。At this time, since the soil removal screw conveyor 2 has a smaller soil conveying capacity than the first stage soil removal screw conveyor 1, an appropriate earth pressure is generated in the intermediate soil tank 3, and the additive material injection is synergistic. As a result, an impermeable zone is formed, the valve effect of the earth and sand is maintained, and the face pressure of the face from the first stage soil removal screw conveyor can be maintained.
また前記各ゲート４，５によって前記各排土用スクリュ
ウコンベヤ１，２の排土口開口寸法を調節することによ
って、同各排土用スクリュウコンベヤ１，２の土砂圧密
作用を助成しうるものである。In addition, by adjusting the opening dimensions of the soil discharge ports of the soil discharge screw conveyors 1 and 2 using the gates 4 and 5, the soil compaction effect of the soil discharge screw conveyors 1 and 2 can be assisted. be.
第１図は従来のシールド式トンネル掘削機の縦断面図、
第２図は本案に係るシールド式トンネル掘削機の掘削土
搬出部分を示す縦断面図、第３図は第２図の矢視■−■
図である。
１・・・・・・第１段の排土用スクリュウコンベヤ、２
・・・・・・第２段の排土用スクリュウコンベヤ、３・
・・・・・中間土槽、８・・・・・・添加材注入管、９
・・・・・・礫除去槽。Figure 1 is a vertical cross-sectional view of a conventional shield type tunnel excavator.
Figure 2 is a longitudinal cross-sectional view showing the excavated soil transport portion of the shield type tunnel excavator according to the present invention, and Figure 3 is the arrow direction of Figure 2 - ■
It is a diagram. 1...First stage soil removal screw conveyor, 2
・・・・・・Second stage soil removal screw conveyor, 3・
...Intermediate soil tank, 8...Additive injection pipe, 9
...Gravel removal tank.
Claims (1)
リュウコンベヤを連設するとともに、同周スクリュウコ
ンベヤの中間に添加材注入混合装置及び礫除去槽を具え
た中間土槽を介装してなることを特徴とするシールド式
トンネル掘削機。First and second stage soil removal screw conveyors with different amounts of soil conveyed are installed in series, and an intermediate soil tank equipped with an additive injection mixing device and a gravel removal tank is installed in the middle of the same circumferential screw conveyor. A shield type tunnel excavating machine characterized by being interposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14522380U JPS603199Y2 (en) | 1980-10-14 | 1980-10-14 | Shield type tunnel excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14522380U JPS603199Y2 (en) | 1980-10-14 | 1980-10-14 | Shield type tunnel excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5771589U JPS5771589U (en) | 1982-05-01 |
| JPS603199Y2 true JPS603199Y2 (en) | 1985-01-29 |
Family
ID=29504882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14522380U Expired JPS603199Y2 (en) | 1980-10-14 | 1980-10-14 | Shield type tunnel excavator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603199Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016160735A (en) * | 2015-03-05 | 2016-09-05 | 株式会社アルファシビルエンジニアリング | Machine inside earth removal processing system in underground excavation boring machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6448092B2 (en) * | 2016-05-17 | 2019-01-09 | 株式会社アルファシビルエンジニアリング | A mud pressure type sealed excavator capable of handling sharply curved underground excavations. |
-
1980
- 1980-10-14 JP JP14522380U patent/JPS603199Y2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016160735A (en) * | 2015-03-05 | 2016-09-05 | 株式会社アルファシビルエンジニアリング | Machine inside earth removal processing system in underground excavation boring machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5771589U (en) | 1982-05-01 |
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