JPS6228279B2 - - Google Patents
Info
- Publication number
- JPS6228279B2 JPS6228279B2 JP57037079A JP3707982A JPS6228279B2 JP S6228279 B2 JPS6228279 B2 JP S6228279B2 JP 57037079 A JP57037079 A JP 57037079A JP 3707982 A JP3707982 A JP 3707982A JP S6228279 B2 JPS6228279 B2 JP S6228279B2
- Authority
- JP
- Japan
- Prior art keywords
- lining
- formwork
- jack
- ground
- board
- 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
- 238000009415 formwork Methods 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 description 18
- 239000010959 steel Substances 0.000 description 18
- 238000010276 construction Methods 0.000 description 7
- 238000005507 spraying Methods 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 208000006650 Overbite Diseases 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Description
【発明の詳細な説明】
この発明は、トンネルの一次覆工工法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for primary lining of a tunnel.
従来のこの種の工法としては、典型的なものと
してNATM工法における吹付け覆工工法をあげ
ることができるが、この工法は仕上り面が平滑と
ならないだけでなく、吹付け時におけるリバンド
量が多くて不経済であり、また吹付け時の粉塵に
よつてトンネル内の環境を悪化し、湧水部分での
吹付け覆工は施工不良を起して剥離脱落を生じ、
さらに吹付け覆工作業中に他の作業を併行して行
えない等の幾多の欠点がある。 A typical example of this type of conventional construction method is the spray lining method in the NATM construction method, but this method not only results in an uneven finished surface, but also requires a large amount of rebanding during spraying. It is uneconomical, and the environment inside the tunnel is deteriorated due to the dust generated during spraying. Spraying lining at spring water areas causes poor construction, resulting in flaking and falling off.
Furthermore, there are many drawbacks, such as the inability to perform other work concurrently during spray lining work.
この発明は、前記のような従来の工法のもたら
す欠点を排除することのできる工法を提供するこ
とを目的とするものである。 The object of the present invention is to provide a construction method that can eliminate the drawbacks of the conventional construction methods as described above.
この発明を図面に示す実施例を参照して説明す
る。 The present invention will be described with reference to embodiments shown in the drawings.
第１，２図には坑道１内に設置された剛体架台
２が示されており、この剛体架台２は複数本のア
ーチ型のＨ形鋼２ａを、その周方向の適宜個所に
おいてＨ形鋼２ｂで連結固定して構成され、全体
に覆工内空と相似形で、かつそれより小さく、長
さは覆工個所の長さより長くなつている。 1 and 2 show a rigid pedestal 2 installed in a mine shaft 1, and this rigid pedestal 2 has a plurality of arch-shaped H-beams 2a mounted on the H-beams at appropriate locations in the circumferential direction. It is connected and fixed at 2b, and has a similar shape to the interior of the lining as a whole, but is smaller than it, and its length is longer than the length of the lining part.
剛体架台２の各Ｈ形鋼２ｂ上には油圧等で作動
するジヤツキ３が設置されており、このジヤツキ
３の作動杆３ａには複数に分割された鋼製型枠板
４が取付けられ、剛体架台２はこれらの鋼製型枠
板４によつて覆われている。さらにこれらの鋼製
型枠板４にはその全面に亘つてゴム板５が被覆さ
れている。また剛体架台２の前後端部には剛体架
台２と地山との間の空間を塞ぐ妻型枠９，９′が
設けられている。 A jack 3 operated by hydraulic pressure or the like is installed on each H-shaped steel 2b of the rigid frame 2. A steel formwork plate 4 divided into a plurality of parts is attached to the operating rod 3a of this jack 3, and the rigid body The frame 2 is covered by these steel formwork plates 4. Further, these steel formwork plates 4 are covered with a rubber plate 5 over the entire surface thereof. Furthermore, gable forms 9 and 9' are provided at the front and rear ends of the rigid frame 2 to close the space between the rigid frame 2 and the ground.
各鋼製型枠板４は第３〜６図に示すように、端
部に歯形４ａが形成されており、この歯形４ａの
咬合により隣接する鋼製型枠板４，４が互いに接
続している。そしてジヤツキ３の作動杆３ａの非
伸長時には隣接する鋼製型枠板４，４の歯形４ａ
が深く咬口し（第３，４図）、またジヤツキ３を
作動させて作動杆３ａを伸長させた時には鋼製型
枠板４，４が外方に拡大して隣接する鋼製型枠板
４，４の歯形４ａが浅く咬合するようになつてい
る（第５，６図）。 As shown in FIGS. 3 to 6, each steel formwork plate 4 has a tooth profile 4a formed at its end, and the adjacent steel formwork plates 4, 4 are connected to each other by the engagement of the tooth profile 4a. There is. When the operating rod 3a of the jack 3 is not extended, the tooth profile 4a of the adjacent steel formwork plates 4, 4
has a deep bite (Figs. 3 and 4), and when the jack 3 is operated to extend the operating rod 3a, the steel formwork plates 4, 4 expand outward, and the adjacent steel formwork plates The tooth profiles 4a of Nos. 4 and 4 are designed to be in shallow occlusion (Figs. 5 and 6).
歯形４ａの咬合深さは、ジヤツキ３の作動杆３
ａの最大伸長時における隣接する鋼製型枠板４，
４の接続部の弧長l1と、作動杆３ａの非伸長時に
おける弧長l2との差よりも大きくすることによ
り、隣接する鋼製型枠板４，４の離脱を防止で
き、またゴム板５の垂れ下がりも防止できる。 The occlusion depth of the tooth profile 4a is the operating rod 3 of the jack 3.
Adjacent steel formwork plate 4 at maximum elongation of a.
By making the difference between the arc length l 1 of the connecting portion of No. 4 and the arc length l 2 of the operating rod 3a when it is not extended, separation of the adjacent steel formwork plates 4, 4 can be prevented, and It is also possible to prevent the rubber plate 5 from hanging down.
このような剛体架台２を、坑道１内の覆工個所
に移動して鋼製型枠板４を地山６の掘さく面に合
わせ、ジヤツキ３を作動させて鋼製型枠板４を拡
大し、地山６との間に間隙８を構成したのち、輸
送管１０を介してこの間隙８内に急結性のコンク
リート等よりなる覆工材を填充する。この場合ジ
ヤツキ３の作動杆３ａの伸び長さを調整すること
により設計覆工厚の確保が可能となる。また剛体
架台２に設けた前側の妻型枠９を地山６に、後側
の妻型枠９′を既設一次覆工コンクリート７にそ
れぞれ密接させることにより、覆工材の外部への
漏洩が防止される。 Such a rigid frame 2 is moved to the lining area in the tunnel 1, the steel form plate 4 is aligned with the digging surface of the earth 6, and the jack 3 is operated to enlarge the steel form plate 4. After forming a gap 8 with the ground 6, this gap 8 is filled with a lining material made of quick-setting concrete or the like through a transport pipe 10. In this case, by adjusting the extension length of the operating rod 3a of the jack 3, it is possible to ensure the designed lining thickness. In addition, by bringing the front end formwork 9 provided on the rigid frame 2 into close contact with the ground 6 and the rear end end form 9' into the existing primary lining concrete 7, leakage of the lining material to the outside is prevented. Prevented.
前記のようにして覆工材を填充した後、再度ジ
ヤツキ３を作動させその圧力により覆工材と地山
６との間に生ずる空隙を排除するとともに、覆工
材の地山６への圧着を促進し、このような状態の
もとで覆工材を固化させる。 After filling the lining material as described above, the jack 3 is operated again and the pressure eliminates the gap between the lining material and the ground 6, and the lining material is crimped onto the ground 6. Under these conditions, the lining material solidifies.
覆工材の固化後、ジヤツキ３を逆作動させて鋼
製型枠板４を覆工材から剥離し、剛体架台２を移
動して以後同様の操作により連続的に一次覆工を
行う。 After solidification of the lining material, the jack 3 is operated in reverse to peel the steel formwork plate 4 from the lining material, the rigid frame 2 is moved, and the primary lining is continuously performed thereafter by the same operation.
なお上記実施例では剛体架台２をＨ形鋼２ａ，
２ｂによつて構成したが、半円筒状の一体的なも
のとしてもよい。またゴム板５を鋼製型枠板４の
全面に亘つて被覆したが、鋼製型枠板４の接続部
分のみを被覆するようにしてもよい。 In the above embodiment, the rigid frame 2 is made of H-beam steel 2a,
2b, but it may also be a semi-cylindrical integral piece. Further, although the entire surface of the steel formwork plate 4 is covered with the rubber plate 5, only the connecting portion of the steel formwork plate 4 may be covered.
この発明は上記のようであつて、覆工個所に移
動された剛体架台は、複数に分割しかつ接続部に
ゴム板を被覆した型枠板で覆われるとともに、両
者間にジヤツキが設けられ、また剛体架台の前後
端部に妻型枠が設けられていて、ジヤツキを作動
させて型枠板を拡大したうえ、地山との間に形成
された間隙に覆工材を填充し、その後再度ジヤツ
キを作動させてその圧力により覆工材と地山との
間の空隙を排除するとともに覆工材を地山に圧着
させるようにしたので、従来の吹付工法にみられ
るような諸欠点を排除できるのに加えて、コンク
リート等の覆工材の配合や品質管理を容易にで
き、しかも特殊な機械や技能を必要とすることな
く均質でかつ覆工面が平滑な一次覆工を迅速に行
うことができる。 The present invention is as described above, and the rigid frame moved to the lining area is divided into a plurality of parts and covered with formwork plates whose connecting parts are covered with rubber plates, and jacks are provided between the two parts, In addition, gable formwork is provided at the front and rear ends of the rigid frame, and the formwork plate is expanded by operating the jack, and the gap formed between it and the ground is filled with lining material, and then again. By operating the jack, the pressure eliminates the void between the lining material and the ground, and the lining material is crimped to the ground, eliminating various drawbacks found in conventional spraying methods. In addition, it is possible to easily mix and control the quality of lining materials such as concrete, and quickly perform primary lining with a homogeneous and smooth lining surface without the need for special machinery or skills. I can do it.
また覆工個所の内空は剛体架台および型枠板に
よつて覆われるので、地山の落石崩落等を考慮す
ることなく安全に作業を行うことができ、さらに
切羽の発破後剛体架台が移動可能なように坑道の
両脇のずりを排除しておけば、一次覆工作業、坑
道中央部のずりの排除作業および穿孔作業を並行
して行うことができるから、工程を短縮できると
ともに工費を低減できる等の幾多のすぐれた効果
がある。 In addition, since the interior of the lining area is covered by a rigid frame and formwork plates, work can be carried out safely without worrying about falling rocks from the ground, etc. Furthermore, the rigid frame can be moved after the face is blasted. If the shear on both sides of the tunnel is eliminated as much as possible, the primary lining work, removal of shear in the center of the shaft, and drilling work can be done in parallel, which shortens the process and reduces construction costs. There are many excellent effects such as reducing
第１図はこの発明工法の実施例の縦断正面図、
第２図は同上の線−による断面図、第３図は
ジヤツキの作動杆の非伸長時における型枠板の接
続部の断面図、第４図は同上の平面図、第５図は
ジヤツキの作動杆の伸長時における第３図と同様
な図、第６図は同上の平面図。
１……坑道、２……剛体架台、３……ジヤツ
キ、４……鋼製型枠板、５……ゴム板、６……地
山、７……一次覆工コンクリート、８……間隙、
９，９′……妻型枠、１０……コンクリート輸送
管。
Figure 1 is a longitudinal sectional front view of an embodiment of this invention construction method.
Fig. 2 is a sectional view taken along the same line -, Fig. 3 is a sectional view of the connecting part of the formwork plate when the operating rod of the jack is not extended, Fig. 4 is a plan view of the same, and Fig. 5 is a sectional view of the jack. A view similar to FIG. 3 and FIG. 6 is a plan view of the same when the operating rod is extended. 1... Mine shaft, 2... Rigid frame, 3... Jacket, 4... Steel form board, 5... Rubber plate, 6... Earth, 7... Primary lining concrete, 8... Gap,
9,9'... Gable formwork, 10... Concrete transport pipe.
Claims (1)
で、かつそれより小さい剛体架台をトンネル坑道
内の覆工個所に設置し、この剛体架台に沿つた地
山側に複数に分割した型枠板を接続して配置し、
この型枠板によつて剛体架台を覆うとともに型枠
板と剛体架台との間にジヤツキを設け、剛体架台
の前後端部に妻型枠を固設して地山と剛体架台と
の間の空間を塞ぎ、少なくとも型枠板の接続部分
を弾性板で覆い、ジヤツキを作動させて型枠板を
地山側に拡大したのち、地山と型枠板との間の間
隙に覆工材を填充し、填充完了後再度ジヤツキを
作動させてその圧力により覆工材を地山に圧着さ
せ、覆工材の固化後ジヤツキを逆作動させて型枠
を覆工材から剥離し、剛体架台を移動することを
特徴とする一次覆工工法。1 When lining a tunnel, a rigid frame similar in shape to the lining interior and smaller in size is installed at the lining location in the tunnel shaft, and a formwork divided into multiple pieces is placed on the ground side along this rigid frame. Connect and arrange the boards,
The rigid mount is covered by this form board, and jacks are provided between the form board and the rigid mount, and gable forms are fixed to the front and rear ends of the rigid mount to prevent the gap between the ground and the rigid mount. After closing the space and covering at least the connecting part of the formwork board with an elastic board, operating the jack to expand the formwork board towards the ground, fill the gap between the ground and the formwork board with lining material. After the filling is completed, the jack is operated again and the pressure is used to bond the lining material to the earth, and after the lining material has solidified, the jack is operated in reverse to separate the formwork from the lining material and move the rigid frame. A primary lining method that is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57037079A JPS58153900A (en) | 1982-03-09 | 1982-03-09 | Primary coating method of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57037079A JPS58153900A (en) | 1982-03-09 | 1982-03-09 | Primary coating method of tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58153900A JPS58153900A (en) | 1983-09-13 |
| JPS6228279B2 true JPS6228279B2 (en) | 1987-06-19 |
Family
ID=12487537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57037079A Granted JPS58153900A (en) | 1982-03-09 | 1982-03-09 | Primary coating method of tunnel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58153900A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0540869A (en) * | 1990-11-20 | 1993-02-19 | Nippon Kinsen Kikai Kk | Medal feeding device for game system |
-
1982
- 1982-03-09 JP JP57037079A patent/JPS58153900A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0540869A (en) * | 1990-11-20 | 1993-02-19 | Nippon Kinsen Kikai Kk | Medal feeding device for game system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58153900A (en) | 1983-09-13 |
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