JP2622488B2 - Dust collection device for tunnel excavation - Google Patents
Dust collection device for tunnel excavationInfo
- Publication number
- JP2622488B2 JP2622488B2 JP13184193A JP13184193A JP2622488B2 JP 2622488 B2 JP2622488 B2 JP 2622488B2 JP 13184193 A JP13184193 A JP 13184193A JP 13184193 A JP13184193 A JP 13184193A JP 2622488 B2 JP2622488 B2 JP 2622488B2
- Authority
- JP
- Japan
- Prior art keywords
- vortex
- dust
- tunnel
- pipe
- air
- 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
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、トンネル掘削時に発生
する粉塵を回収する粉塵回収装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting device for collecting dust generated during tunnel excavation.
【０００２】[0002]
【従来の技術】トンネル掘削機でトンネル岩盤等を掘削
する際に発生する粉塵は、微細な粒子であるため空気中
に長時間浮遊し、作業環境を損なうと共に視界の低下で
安全確保をも困難にしていた。2. Description of the Related Art Dust generated when excavating tunnel rock or the like with a tunnel excavator is a fine particle and therefore floats in the air for a long time, impairing the working environment and reducing visibility, making it difficult to ensure safety. I was
【０００３】そこで、切羽の近傍に吸排気風管を設けて
換気する方法、集塵機で除去する方法や散水により地上
に落下させる技術は知られている。[0003] Therefore, there are known a method of ventilating by providing an air intake / exhaust air pipe near a face, a method of removing the air with a dust collector, and a technique of dropping the apparatus by spraying water.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
技術によれば切羽近傍に拡散した粉塵に対する対応であ
るため、作業場全体に拡散している粉塵を完全に除去す
る事は不可能であり、安全上の問題と、作業許容値まで
粉塵濃度を下げるためには、大口径風管で多大な換気風
量等が必要で、設備費・維持費がかさむという問題があ
った。However, according to the above-mentioned technology, since it is a countermeasure against dust diffused in the vicinity of the face, it is impossible to completely remove the dust diffused in the entire workplace, and it is difficult to safely remove the dust. In addition to the above problems, a large-diameter air pipe requires a large amount of ventilation air in order to reduce the dust concentration to the permissible work value.
【０００５】したがって、本発明は、粉塵が拡散しない
うちに粉塵を回収するトンネル掘削時の粉塵回収装置を
提供する事を目的としている。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a dust collecting apparatus at the time of tunnel excavation for collecting dust before the dust is spread.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、トンネ
ル掘削機の先端部に螺旋渦を発生させるトンネル掘削時
の粉塵回収装置であって、内管と外管との二重管で構成
してその二重管の一端を解放すると共に外管と内管との
間に渦発生手段を設け、他端には外管と内管との間に送
気口を設け、その送気口に送気ブロアを接続し、内管に
排気手段を接続している。According to the present invention, there is provided a dust collecting apparatus for excavating a tunnel in which a spiral vortex is generated at a tip end portion of a tunnel excavating machine, comprising a double pipe of an inner pipe and an outer pipe. And releasing one end of the double pipe and providing vortex generating means between the outer pipe and the inner pipe, and providing an air supply port between the outer pipe and the inner pipe at the other end, and providing the air supply port Is connected to an air supply blower, and an exhaust pipe is connected to the inner pipe.
【０００７】上記の渦発生手段は円周方向１方向に傾斜
した複数の吹出しノズルまたはガイドベーンを設ける
か、又は円周の切線方向に送気口を設けることが好まし
い。It is preferable that the vortex generating means be provided with a plurality of blowing nozzles or guide vanes inclined in one circumferential direction, or to be provided with an air supply port in the direction of the circumferential line.
【０００８】[0008]
【作用】上記のように構成されたトンネル掘削時の粉塵
回収装置において、トンネル掘削機の先端部に設けられ
た渦発生手段により形成された螺旋渦は、渦中心部に負
圧場と、渦外周部に加圧場とを有しているので、渦近傍
の空気は渦中心に向かって強い流れを持ち、吸引口に向
かって吸込まれる。The spiral vortex formed by the vortex generating means provided at the tip of the tunnel excavator has a negative pressure field and a vortex at the center of the vortex. Since the outer peripheral portion has a pressurized field, the air near the vortex has a strong flow toward the center of the vortex and is sucked toward the suction port.
【０００９】渦発生手段は螺旋渦の先端が切羽に届くよ
うに設置されているので、この流れに切羽の粉塵は吸込
まれ、拡散することなく回収できる。Since the vortex generating means is installed so that the tip of the spiral vortex reaches the face, the dust of the face is sucked into this flow and can be collected without being diffused.
【００１０】[0010]
【実施例】以下、図面を参照して、本発明の実施例を説
明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１において、トンネル１の切羽２には、
トンネル掘削機３のカッター３ａからの粉塵Ａが発生し
ている。In FIG. 1, a face 2 of a tunnel 1 includes:
Dust A is generated from the cutter 3a of the tunnel excavator 3.
【００１２】また、その掘削機３のブーム３ｂの先端部
には渦発生手段である渦発生装置４が設けられ、その渦
発生装置４には送気ブロア５と排気手段である集塵機６
とが空気回路で連結されている。A vortex generator 4 as vortex generator is provided at the tip of a boom 3b of the excavator 3, and the vortex generator 4 has an air blower 5 and a dust collector 6 as exhaust means.
And are connected by an air circuit.
【００１３】そして、渦発生装置４は、図２を参照し
て、内管７と外管９とエンドプレート１０、１１とで形
成され、内管７と外管９との間にあるそのエンドプレー
ト１１には渦発生手段である吹出し口８が円周方向１方
向に複数設けられ、エンドプレート１０には送気ブロア
５からの空気回路を接続する接続口である送気口１０ａ
が設けられている。Referring to FIG. 2, the vortex generator 4 is formed of an inner tube 7, an outer tube 9, and end plates 10 and 11, and its end located between the inner tube 7 and the outer tube 9. The plate 11 is provided with a plurality of outlets 8 serving as vortex generating means in one circumferential direction, and the end plate 10 is provided with an air inlet 10 a which is a connection port for connecting an air circuit from the air blower 5.
Is provided.
【００１４】したがって、トンネル掘削作業に際し、送
気ブロア５と集塵機６とを作動させ、切羽２で発生する
粉塵Ａの発生場所に渦発生装置４が形成する螺旋渦Ｂの
先端が来るように渦発生器４をブーム状にセットすれ
ば、濃度の濃い粉塵が螺旋渦Ｂの内側にＣで示すように
吸引され、吸引口１１ａから集塵機６に集塵され、粉塵
が拡散されることがないので作業環境は悪くならない。
集塵機６で集められた粉塵はトンネル外に搬出すればよ
い。Therefore, during the tunnel excavation work, the air blower 5 and the dust collector 6 are operated, and the vortex is formed so that the tip of the spiral vortex B formed by the vortex generator 4 comes to the place where the dust A generated in the face 2 is generated. If the generator 4 is set in a boom shape, dust having a high concentration is sucked inside the spiral vortex B as indicated by C, and is collected from the suction port 11a to the dust collector 6, so that the dust is not diffused. The working environment does not get worse.
The dust collected by the dust collector 6 may be carried out of the tunnel.
【００１５】また、集塵機６は掘削機上でなく、近傍の
トンネル内に設けてもよい。The dust collector 6 may be provided not in the excavator but in a nearby tunnel.
【００１６】図３は渦発生装置の別の実施例を示し吹出
し口８に代えて、複数の案内羽根１２を設けたもので、
作用に付いては同様である。FIG. 3 shows another embodiment of the vortex generator, in which a plurality of guide vanes 12 are provided in place of the outlet 8.
The operation is similar.
【００１７】図４は渦発生装置の他の実施例を示し、外
管９の外側から円周方向に送気管１３を接続して、旋回
流を形成するようにしたもので、作用に付いては同様で
ある。FIG. 4 shows another embodiment of the vortex generator, in which an air supply pipe 13 is connected circumferentially from the outside of the outer pipe 9 to form a swirling flow. Is similar.
【００１８】[0018]
【発明の効果】本発明は、以上説明したように構成され
ているので、切羽面で発生した粉塵が作業雰囲気場に拡
散する前の高濃度状態で回収できる。According to the present invention, as described above, dust generated on the face can be collected in a high concentration state before it is diffused into the work atmosphere.
【００１９】したがって、小型の設備で効果的に作業場
の環境改善ができ、従来のように大口径風管による大風
量換気は必要なく、安全であると共にコスト低減に寄与
する。Therefore, the environment of the workplace can be effectively improved with a small facility, and large air volume ventilation with a large-diameter air tube is not necessary as in the prior art, which is safe and contributes to cost reduction.
【図１】本発明の一実施例を示すトンネル掘削機の作業
時を示す模式図。FIG. 1 is a schematic diagram showing a working state of a tunnel excavator showing one embodiment of the present invention.
【図２】図１の渦発生装置の例を示す斜視図。FIG. 2 is a perspective view showing an example of the vortex generator of FIG. 1;
【図３】渦発生装置の別の例を示す斜視図。FIG. 3 is a perspective view showing another example of the vortex generator.
【図４】渦発生装置の他の例を示す斜視図。FIG. 4 is a perspective view showing another example of the vortex generator.
１・・・トンネル ２・・・切羽 ３・・・トンネル掘削機 ４・・・渦発生装置 ５・・・送気ブロア ６・・・集塵機 ７・・・内管 ８・・・吹出し口 ９・・・外管 １０、１１・・・エンドプレート １０ａ・・・送気口 １１ａ・・・吸引口 １２・・・案内板 １３・・・送気管 Ｂ・・・螺旋渦 DESCRIPTION OF SYMBOLS 1 ... Tunnel 2 ... Face 3 ... Tunnel excavator 4 ... Vortex generator 5 ... Air blower 6 ... Dust collector 7 ... Inner pipe 8 ... Outlet 9 ... ..Outer pipes 10, 11 End plate 10a Air supply port 11a Suction port 12 Guide plate 13 Air supply pipe B Spiral vortex
Claims (1)
させるトンネル掘削時の粉塵回収装置であって、内管と
外管との二重管で構成してその二重管の一端を解放する
と共に外管と内管との間に渦発生手段を設け、他端には
外管と内管との間に送気口を設け、その送気口に送気ブ
ロアを接続し、内管に排気手段を接続したことを特徴と
するトンネル掘削時の粉塵回収装置。1. A dust collecting device for a tunnel excavator for generating a spiral vortex at the tip of a tunnel excavator, comprising a double pipe of an inner pipe and an outer pipe, wherein one end of the double pipe is released. Vortex generating means is provided between the outer tube and the inner tube, and an air supply port is provided at the other end between the outer tube and the inner tube, and an air supply blower is connected to the air supply port. A dust collecting apparatus for tunnel excavation, characterized in that exhaust means is connected to the apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13184193A JP2622488B2 (en) | 1993-06-02 | 1993-06-02 | Dust collection device for tunnel excavation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13184193A JP2622488B2 (en) | 1993-06-02 | 1993-06-02 | Dust collection device for tunnel excavation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06341300A JPH06341300A (en) | 1994-12-13 |
| JP2622488B2 true JP2622488B2 (en) | 1997-06-18 |
Family
ID=15067358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13184193A Expired - Lifetime JP2622488B2 (en) | 1993-06-02 | 1993-06-02 | Dust collection device for tunnel excavation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2622488B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4521371B2 (en) * | 2006-03-16 | 2010-08-11 | 三井住友建設株式会社 | Method for collecting contaminated air in tunnel and ventilation equipment in tunnel using the same |
| CN103485782A (en) * | 2013-09-05 | 2014-01-01 | 新汶矿业集团有限责任公司翟镇煤矿 | Dedusting method of fully-mechanized excavating construction for underground coal mine |
| CN109026115B (en) * | 2018-09-17 | 2023-07-18 | 西安科技大学 | Mining negative pressure ventilation dust collector |
-
1993
- 1993-06-02 JP JP13184193A patent/JP2622488B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06341300A (en) | 1994-12-13 |
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