JPH0624478Y2 - Water stop device for backfill material injection part in segment - Google Patents
Water stop device for backfill material injection part in segmentInfo
- Publication number
- JPH0624478Y2 JPH0624478Y2 JP1988086660U JP8666088U JPH0624478Y2 JP H0624478 Y2 JPH0624478 Y2 JP H0624478Y2 JP 1988086660 U JP1988086660 U JP 1988086660U JP 8666088 U JP8666088 U JP 8666088U JP H0624478 Y2 JPH0624478 Y2 JP H0624478Y2
- Authority
- JP
- Japan
- Prior art keywords
- packing
- segment
- water stop
- backfill material
- stop device
- 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 - Fee Related
Links
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案はトンネル地山のライニングを構成するセグメン
トに明けられたグラウト注入孔の止水装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a water stop device for a grout injection hole formed in a segment that constitutes a lining of a tunnel ground.
（従来の技術） 従来、グラウト注入孔の止水装置は第３図に示すように
セグメント21のグラウト注入孔22内壁に装着されたソケ
ット23の一端に１つのＯリング24を添装し、これを前記
ソケット23に螺着する閉塞栓25座面で押圧して液密シー
ルとするものであった。（実開昭61-23398号公報参照） （考案が解決しようとする問題点） 上述の止水装置では、止水部が線当たりとなるＯリング
24のみを採用するものであるから、Ｏリング24の当たり
部に凹凸がある場合、止水効果は低下せざるを得なかっ
た。(Prior Art) Conventionally, a water shut-off device for a grout injection hole has an O-ring 24 attached to one end of a socket 23 mounted on the inner wall of the grout injection hole 22 of a segment 21, as shown in FIG. Was pressed against the seat surface of the closing plug 25 screwed to the socket 23 to form a liquid-tight seal. (Refer to Japanese Utility Model Laid-Open No. 61-23398) (Problems to be solved by the invention) In the above-described water stop device, the O-ring in which the water stop portion is a line contact
Since only 24 is adopted, if the contact portion of the O-ring 24 has irregularities, the water-stopping effect is unavoidable.
（問題点を解決するための手段） 本考案に係る裏込材注入部の止水装置の特徴は、 グラウト注入口２の内周面に刻設されためねじ３の下端
側には、軸方向と径方向のいずれの方向にも止水もいを
有するパッキン４に対する第１座面の円錐面５と第２座
面の水平面６が形成され、閉塞栓７の外周面に刻設され
たおねじ８の下端部周縁には、前記パッキン４が嵌め込
まれる環状溝９が形成されており、前記パッキン４は軸
方向部分４Ａの下方端に半径方向部分４Ｂを一体形成し
てなるところにある。(Means for Solving the Problems) The feature of the water stop device of the backfill material injection part according to the present invention is that the lower end side of the screw 3 has an axial direction because it is engraved on the inner peripheral surface of the grout injection port 2. And a radial conical surface 5 of a first seat surface and a horizontal surface 6 of a second seat surface for a packing 4 having a water stop in both radial directions, and a male screw engraved on the outer peripheral surface of the closure plug 7. An annular groove 9 into which the packing 4 is fitted is formed at the peripheral edge of the lower end of the packing 8, and the packing 4 is formed by integrally forming a radial portion 4B at the lower end of the axial portion 4A.
（作用） トンネル地山の地下水がセグメントの裏込材注入孔から
トンネル内部に漏水しようとしても、該注入孔の止水部
に配設した径方向及び軸方向のいずれの方向にも止水性
を有する単一の環状パッキンにより充分に封止される。(Operation) Even if the groundwater of the tunnel ground tries to leak into the inside of the tunnel from the backfill material injection hole of the segment, the water stoppage in both the radial direction and the axial direction arranged in the water stop portion of the injection hole is prevented. It is fully sealed by the single annular packing it has.
（実施例） 本考案の実施例につき、第１図乃至第２図を参照して説
明すると、１は鋼製セグメント、２は該セグメント１に
明けられた裏込材のグラウト注入孔、３は該注入孔２の
内周面に刻設されためねじである。そしてセグメント側
の上記めねじ３の下端側には、径方向（グラウト注入孔
２の径方向）と軸方向（グラウト注入孔２の中心軸線方
向）のいずれの方向にも止水性を有するパッキン４に対
する第１座面の円錐面５と第２座面の水平面６がそれぞ
れ形成されている。閉塞栓７には、その外周面におねじ
８が、該おねじ８の下端部周縁に前記パッキン４が嵌め
込まれる半円形の環状溝９がそれぞれ形成され、さらに
閉塞栓７の下面中央にはスパナ等に適合するねじ込み用
角ボス10が突設されている。(Embodiment) An embodiment of the present invention will be described with reference to FIGS. 1 and 2. 1 is a steel segment, 2 is a grout injection hole for backing material formed in the segment 1, and 3 is It is a screw because it is engraved on the inner peripheral surface of the injection hole 2. On the lower end side of the female thread 3 on the segment side, a packing 4 having water-stopping properties in both the radial direction (radial direction of the grout injection hole 2) and the axial direction (center axis direction of the grout injection hole 2). A conical surface 5 of the first seat surface and a horizontal surface 6 of the second seat surface are respectively formed. A screw 8 is formed on the outer peripheral surface of the closure plug 7, and a semicircular annular groove 9 into which the packing 4 is fitted is formed on the peripheral edge of the lower end portion of the male screw 8. A screw-in square boss 10 suitable for a spanner or the like is provided in a protruding manner.
第１図に示す実施例では、パッキンとして断面が円弧面
部４Ａ（軸方向部分）と水平面部４Ｂ（半径方向部分）
を一体にした形の合成ゴム等の弾性材でつくられた環状
パッキン４（第２Ａ図）が使用されているので、グラウ
ト注入孔にパッキン４を介装して閉塞栓７をねじ込めば
円錐面５とパッキン４の円弧面部４Ａが線接触し、水平
面６とパッキン４の水平面部４Ｂとが面接触してパッキ
ン４の外側に沿う漏水を封止し、また閉塞栓７の溝９の
円弧面とパッキン４の円弧面部４Ａ、閉塞栓７のフラン
ジ面とパッキン４の下面がいずれも面接触してパッキン
４の内側に沿う漏水を封止する。In the embodiment shown in FIG. 1, the packing has a circular cross section 4A (axial portion) and a horizontal plane 4B (radial portion).
Since an annular packing 4 (Fig. 2A) made of an elastic material such as synthetic rubber is used, the packing plug 4 is inserted in the grout injection hole and the plug 7 is screwed into the conical shape. The surface 5 and the arc surface 4A of the packing 4 are in line contact with each other, and the horizontal surface 6 and the horizontal surface 4B of the packing 4 are in surface contact to seal water leakage along the outside of the packing 4, and the arc of the groove 9 of the plug 7 is also provided. The surface and the arc surface 4A of the packing 4, and the flange surface of the closure plug 7 and the lower surface of the packing 4 are in surface contact with each other to seal water leakage along the inside of the packing 4.
万が一、円錐面５に凹凸があって漏水したとしても、水
平面６とパッキン４の平面部との面接触により封止する
ことができる。Even if the conical surface 5 has irregularities and leaks water, it can be sealed by the surface contact between the horizontal surface 6 and the flat surface portion of the packing 4.
第２Ａ図に示すパッキン４に代え、第２Ｂ図〜第２Ｄ図
に示す異形のパッキンを適用しても、パッキンの当たり
面を線及び面として径方向及び軸方向共に止水性を持っ
たパッキンとして機能させることができる。Even if the modified packing shown in FIGS. 2B to 2D is applied in place of the packing 4 shown in FIG. 2A, the packing contact surface is a line and a surface, and the packing has a waterproof property in both the radial direction and the axial direction. Can be operated.
なお、本考案の実施例として鋼製セグメントにつき説明
してきたが、コンクリートセグメントやその他のセグメ
ントにおける裏込材注入部の止水装置としても適用でき
ることは勿論である。Although the steel segment has been described as the embodiment of the present invention, it is needless to say that the present invention can be applied to a water stop device for a backing material injection portion in a concrete segment or other segments.
（考案の効果） 本考案によれば、地山側の地下水が裏込材注入部を通じ
てトンネル内に漏水しようとしても、パッキンは径方向
にも軸方向にも止水性を有するからこれを充分に封止す
ることができ、しかも高い液密シールを単一のパッキン
のみで可能にし、部品点数も従来の止水装置と同じで、
極めて容易、かつ安価に裏込材注入部に対する止水装置
を提供することができる。(Effect of the Invention) According to the present invention, even if groundwater on the ground side tries to leak into the tunnel through the backfill material injection part, the packing has a water-stop property in both the radial direction and the axial direction, so that it is sufficiently sealed. It is possible to stop, yet high liquid-tight seal is possible with only a single packing, the number of parts is the same as the conventional water stop device,
It is possible to provide a water stop device for the backfill material injection portion extremely easily and inexpensively.
第１図は本考案の一実施例を示すもので、セグメントに
おける裏込材注入部の一部を破断した縦断面図、第２Ａ
図〜第２Ｄ図は本考案の止水装置に適用されるパッキン
の変形例を示す断面図、第３図は従来の裏込材注入部の
第１図と同様部分の縦断面図である。 １……鋼製セグメント、２……グラウト注入孔、４……
パッキン、４Ａ……パッキンの軸方向部分、４Ｂ……半
径方向部分、５……第１座面の円錐面、６……第２座面
の水平面、７……閉塞栓、９……環状溝。FIG. 1 shows an embodiment of the present invention, and is a longitudinal sectional view in which a part of the backfill material injection portion in the segment is broken, FIG.
2 to 2D are sectional views showing a modified example of the packing applied to the water stopping apparatus of the present invention, and FIG. 3 is a vertical sectional view of the same portion as that of FIG. 1 of the conventional backfill material injecting section. 1 ... Steel segment, 2 ... Grout injection hole, 4 ...
Packing, 4A ... Axial part of packing, 4B ... Radial part, 5 ... Conical surface of first seat surface, 6 ... Horizontal surface of second seat surface, 7 ... Block plug, 9 ... Annular groove .
Claims (1)
ねじ３の下端側には、軸方向と径方向のいずれの方向に
も止水性を有するパッキン４に対する第１座面の円錐面
５と第２座面の水平面６が形成され、閉塞栓７の外周面
に刻設されたおねじ８の下端部周縁には、前記パッキン
４が嵌め込まれる環状溝９が形成されており、前記パッ
キン４は軸方向部分４Ａの下方端に半径方向部分４Ｂを
一体形成してなることを特徴とするセグメントにおける
裏込材注入部の止水装置。1. A cone of a first seating surface for a packing 4 having a waterproof property in both the axial direction and the radial direction on the lower end side of the screw 3 which is engraved on the inner peripheral surface of the grout inlet 2. A surface 5 and a horizontal surface 6 of the second seat surface are formed, and an annular groove 9 into which the packing 4 is fitted is formed at the lower end peripheral edge of the male screw 8 engraved on the outer peripheral surface of the closure plug 7. The packing 4 is formed by integrally forming a radial portion 4B at a lower end of an axial portion 4A, and a waterproofing device for a backfill material injecting portion in a segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988086660U JPH0624478Y2 (en) | 1988-07-01 | 1988-07-01 | Water stop device for backfill material injection part in segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988086660U JPH0624478Y2 (en) | 1988-07-01 | 1988-07-01 | Water stop device for backfill material injection part in segment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0211897U JPH0211897U (en) | 1990-01-25 |
| JPH0624478Y2 true JPH0624478Y2 (en) | 1994-06-29 |
Family
ID=31311297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988086660U Expired - Fee Related JPH0624478Y2 (en) | 1988-07-01 | 1988-07-01 | Water stop device for backfill material injection part in segment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624478Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5149229B2 (en) * | 2009-03-30 | 2013-02-20 | 鹿島建設株式会社 | Tunnel segment |
| CN108868818A (en) * | 2018-08-03 | 2018-11-23 | 中国电建集团铁路建设有限公司 | A kind of shield duct piece hole for hoist sealing cover |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5337244U (en) * | 1976-09-07 | 1978-04-01 | ||
| JPS6241897A (en) * | 1985-08-16 | 1987-02-23 | 有限会社 十機精工 | Opening section to which plug can be fitted |
-
1988
- 1988-07-01 JP JP1988086660U patent/JPH0624478Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0211897U (en) | 1990-01-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |