JPS58153900A - Primary coating method of tunnel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a primary ridge method for tunnels.

As a conventional construction method of this type, NA is used as a typical turtle.
Spraying in the TM construction method can open up the Rene-Ee method, but this construction method is not as good as the 9 finished surfaces are not smooth.
Spraying requires a large amount of glue/pump and is uneconomical.
In addition, the spraying turned the dense boundary inside the tunnel into a sea due to the first production of water, and the spraying at the spring water part caused the mine construction work to be disrupted, causing flaking and falling off. There are many drawbacks that prevent it from being carried out simultaneously.

The object of the present invention is to provide a construction method that can eliminate the drawbacks of the conventional O construction method as described above.

The present invention will be explained with reference to embodiments shown in the drawings.

Fig. 1.2 shows a rigid frame 2 installed in a mine shaft 1, and this rigid frame 2 has a plurality of arch-shaped H-beams 2a installed at appropriate locations in the circumferential direction. It is connected and fixed at 2b, has a similar shape to the inner lining, is smaller in size, and is longer than the length of the lining.

A jack 3 that is operated by hydraulic pressure or the like is installed on each of the rigid frames 2 on the shaped steel 2b, and the operating rod 3a of this jack 3 is
A steel lid frame plate 4 divided into a plurality of parts is attached, and the rigid body frame 2 is handled by these steel lid frame plates 4.

Further, the entire surface of these steel formwork plates 4IC is covered with a rubber plate 6. In addition, the front and rear ends of the rigid frame 20 are formed by II formwork 9.9 that closes the space between the rigid frame 2 and the ground.
' is provided.

As shown in Figs. 3 to 6, each steel IIW frame plate 4 has a tooth profile 4a formed at the end thereof, and the engagement of the tooth profile 4@ allows the adjacent steel form frame plates 4, 4 to intersect with each other. Connected. stop,
□ When the operating rod of the jack 3 is not extended by 1 m, the tooth profile 4 of the copper lid frame plate 4° 4 engages deeply and s.
4vj! A), operate the jack 3 and press the operating rod 3a.
At 9 o'clock, the copper am frame plates 4, 4 expand outward so that the tooth profiles 4a of the adjacent copper frame plates 4.4 are shallowly interlocked (Fig. S, Fig. 6).

The occlusion depth of the tooth profile 4a is determined by the arc length 4 of the connecting portion of the adjacent corner steel cover frame plate 4.4 when the shirt life SO operating rod 31 is fully extended, and the arc length 4 when the operating rod 3a is not extended. By increasing the difference between p1 and the adjacent steel lid frame plate 4.4
It is possible to prevent the rubber plate from coming off, and also to prevent the rubber plate from falling down.

Move such an integrated frame 2 to the O lining part in the tunnel 1, align the copper mu frame plate 4 with the ground SO scooping surface, operate the jack 3 to enlarge the steel form plate 4, After configuring the gap IIs between the ground and the ground 6, the gap 1 is
Fill 11F'3 with lining material made of quick-setting concrete, etc.

In this case, the designed mechanical thickness O can be ensured by adjusting the extension length of the jack 3-operating rod 3a. In addition, the front 11 view frame 9 provided on the rigid frame 2 is placed on the ground 6, and the rear am
By bringing the frames 9' into close contact with the existing and future ecotourism structures 7, leakage of mechanical materials to the outside can be prevented.

The bales filled with lining material as described above are jacked again 3.
is activated, and its pressure eliminates the voids that occur between the material a and the ground 6, and also promotes the crimping of the lining material to the ground 6, and under such conditions, the lining material is Let solidify.

After the machine material has solidified, reversely operate the jack 3 to remove the steel 1141.
The 1 m frame plate 4 is peeled off from the post-work material, the rigid frame 2 is moved, and the same operation is performed continuously to carry out the primary cutting. 4. In the above embodiment, the rigid frame 2 is made of H-shaped steel 21°2k, and 9 may be an integral semi-cylindrical structure. 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. - This invention is as described above, and the rigid frame moved to the lining area is divided into a plurality of parts and covered with a formwork plate whose connection part is covered with a rubber plate, and the jacking between the two is prevented by the general public. In addition, a gable frame was provided at the front and rear ends of the rigid frame, and the formwork plate was expanded by operating the jack, and the Ozeki 11km material formed between it and the ground was filled, and then it was rebuilt again. After the jack is activated and the pressure is applied, the gap between the construction material and the ground is eliminated, and the construction material is crimped to the ground. In addition to being able to eliminate defects, the mixing and quality control of lining materials such as concrete can be easily performed, and the primary wax is homogeneous and has a smooth surface to work with, without the need for special machinery or skills. It is difficult to do this quickly.

Also, since the interior of the lining area is covered by the rigid frame and formwork plates, there is no risk of rocks falling from the ground! The work can be carried out safely without having to consider the situation, and if the slats on both sides of the tunnel are removed so that the rigid frame can be moved after the blasting of the face, then the next construction work will be carried out in the center of the tunnel. By performing the removal work and the drilling work in parallel, there are many excellent effects such as shortening the process and reducing construction costs.

[Brief explanation of drawings]

Figure 1 is a longitudinal sectional front view of an embodiment of this invention construction method, No. s! !
! Figure 3 is a cross-sectional view of the continuation of the form plate OIa when the operating rod O of the jack is not extended, Figure 41 is a plan view of the same, and Figure 5 is the operation of the jack. A view similar to FIG. 3 when the rod is extended, and sg is a plan view of the same. 1... Mine shaft 2... Rigid frame 3... Jacket 4... FLL form board 5... Rubber plate 6... Earth 7... - Next covering concrete 8... Seki @ 9, 9'...Give formwork 1
G...Concrete transport pipe ff11 diagram ff12 diagram eL4cL 1987 Patent Application No. 87079 2, *Ming name Shinnel primary overturning law 3, relationship with the person making the amendment case Patent applicant Chiyoda-ku, Tokyo Misaki-cho 2-6-3 Tekken Construction Co., Ltd. Representative Shige Oishi 4, Agent 5 Subject of amendment Contents of amendment (1) Amend the scope of claims as shown in the attached sheet 07
List of attached documents (paper l1l)・:. Attachment Patent Claim 0SS 1. Regarding the tunnel 0III construction, it has a similar shape to the inner lining,
A rigid body frame smaller than that is installed at the lining part of the tunnel shaft, and a lid frame plate divided into multiple parts is connected and placed on the ground side along the OWA body joint pressure, and the rigid frame plate is At the same time, a jack is provided between the lid frame plate and the rigid frame, and gable frames are fixed to the front and rear ends of the rigid frame to close the space between the ground and the rigid frame, and at least prevent the form plate from forming. After placing the connecting part with an elastic board and operating the jack to expand the lid frame board to the ground 11, the space between the ground and the lid frame board -
Fill with lining material, and after filling is completed, operate the jack again and use the pressure to press the lining material to the ground.
After solidification, the jack is operated in reverse to remove the frame from the lining material and move the rigid frame.

Claims (1)

[Claims] 1.) There is a shadow on the tunnel lining, similar to the interior of the machine,
A rigid mount smaller than the rigid mount is installed at the lining part Ilc in the tunnel shaft, and a lid frame plate divided into multiple parts is connected and placed on the ground side along this rigid mount, and the rigid mount is mounted using this lid frame plate. At the same time, a jack is installed between the lid frame plate and the rigid body frame, and a gable formwork is fixed to the front and rear parts of the rigid body guard, and the ground is swept through the gap between the rigid body frame and the frame, and at least the formwork is After applying an elastic plate to the connecting part of the plate and operating the jack to expand the cover frame plate toward the ground, the connection between the ground and the cover frame plate is
- After filling with construction materials, operate the jack again and use the pressure to press the construction materials to the ground, and after assimilating the Enoki materials, operate the jack in reverse to remove the cover frame from the reinforcement material. Peel off,
The first-order Enoki method is characterized by moving a rigid body guard.