JP2516552B2 - Impermeable membrane installation device and installation method using the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction of a water blocking wall for blocking the movement of seepage water and groundwater in a river, a reservoir, a reservoir, etc., in order to build a water blocking film in a deployed state. And a building method using the same.

[0002]

2. Description of the Related Art Conventionally, steel sheet pile method, column-row continuous wall method, underground continuous wall method, chemical injection method, vertical screen method, There is a continuous sheet construction method.

There are advantages and disadvantages to each of the various water-stopping methods. The column-column continuous wall construction method and underground continuous wall construction method construct a rigid body made of cement-based material in the ground, but cracks may occur in the rigid body due to external forces such as earthquakes,
If it is destroyed, it will lose its function as a water blocking wall. Further, when a steel material such as a steel sheet pile method is used, it can be easily installed in the excavation groove because it has a predetermined rigidity, but it has a problem of corrosion when used for a long period of time.

In recent years, what has been considered to solve these problems is the above-mentioned vertical screen method or continuous sheet method. Although there are many differences between these construction methods, they are common in that an impermeable impermeable membrane is installed in the ground.

In the case of constructing a water blocking wall using the water blocking film,
The water-blocking film is built in the excavation trench for each sheet and is made continuous, and then the mud is solidified or the front and back surfaces thereof are filled with a hardening material or the like. Since it is a sheet member, it cannot be built by itself.
Therefore, for example, after using the shape retainer or being installed in the excavation groove in a state of being attached to the installation frame or the like, only the installation frame is pulled up and removed.

[0006] As a method of installing the installation frame,
There is a case where the erection frame is built after finishing the groove excavation with an excavator once, and a case where the erection frame is erected simultaneously with the shaving groove by using a chain cutter type grooving machine, for example. is there.

In the chain cutter type grooving machine, for example, as shown in FIGS. 10 and 11, a guide post 2 is provided upright on a moving vehicle 1 such as a crawler, and a slider 3 is interposed along the guide post 2 along the guide post 2. The vertical plate-like support body 4 is provided movably,
As shown in FIG. 11, corner sprockets 5A, 5B, 6A, 6B are provided at the lower corners of the support 4, drive sprockets 7A, 7B are provided at the top, and guide sprockets 8A, 8B are provided at the upper corners. 9A and 9B are pivotally supported, and endless chains 10A are attached to the sprockets of these A systems.
However, an endless chain 10B is wound around each sprocket of the B system, and a pair of endless chains 10A and 10B arranged in parallel are connected to each other to provide a connecting member 12 having an excavating blade 11. And the built-in frame P provided with the water-blocking film is fixed to the support body 4 by the chuck cylinders 14 and 14 of the chucks 14a and 14a.
It is gripped by a.

From this state, the endless chain 10 is applied with a pressing force against the ground by the grooving machine by forcibly driving the slider 3 downward or by applying the self-weight of the excavator.
A and 10B are moved, and cutting rotors 16A and 16A
While rotating B, 17A and 17B, the building frame is inserted into the ground together with the insertion of the support 4.

[0009]

However, when each of the water-blocking membranes is built using the chain cutter type grooving machine as described above, it is constructed by wrapping or approaching a part of the existing water-blocking membrane. When the surface material for embedding is built in, the existing water-blocking film may be pushed or pulled up, and the water-blocking film installed in a predetermined expanded state may be spoiled.

Therefore, the new water-impervious film must be separated from the existing water-impervious film and built at least in a non-wrapped state, but if this is done, a gap will form between the adjacent water-impervious films, There arise problems such as not being able to secure sufficient waterproofness.

On the other hand, when the building surface material is pulled up, the water blocking film may rise together, and since such a rising cannot be confirmed on the ground side, the water blocking film should be installed in a predetermined state. There is also a problem that it is difficult to judge whether or not it has been done.

Therefore, a main object of the present invention relates to the construction of a water blocking wall for blocking groundwater, which facilitates the work of installing a water blocking film in an excavation trench and installing it. It is intended to provide a device and the like for installing the water-blocking film in a predetermined developed state and holding a lap portion with each other without raising the water-blocking film together.

[0013]

[Means for Solving the Problems] The above-mentioned problem is a water impermeable film building apparatus for additionally installing a unit impermeable film to be built, which is constructed from a plate-shaped surface material or a frame-shaped surface material. On both sides of the water-impervious film-attaching face material, a water-impervious film that is movable laterally and is folded back to the other surface at both side edges of the water-impervious film-attaching face material is provided. This can be solved by providing a deployment frame for deployment over the entire length.

When a water blocking film is built using this building device, both edge portions of the unit water blocking film to be built are folded back to the other surface of the plate-shaped or frame-shaped surface material. The excavation and installation of the impermeable membrane together with the impermeable membrane erection device are performed, and then the folded portion of the impermeable membrane installed by moving the deployment frame to the side is extended over the entire length. After laterally deploying, the water-impermeable film building device is pulled up and removed.

Further, preferably, the water impermeable membrane building device is inserted into a through hole formed in a front end mounting member that is fixed integrally or integrally with the front end of the unit water impermeable membrane. Water blocking film pressing plate having a locking projection for locking in a state, and a water blocking film built-in fixed substantially perpendicular to the back surface of the water blocking film pressing plate. A co-raising prevention tool which is composed of a presser bar having a length equal to or greater than the length of the device, and which is combined with the impermeable membrane building device so as to be movable and separable from each other using the presser bar as a guide member. It is equipped with.

When a water blocking film is built using this building device, both edge portions of the unit water blocking film to be built are folded back to the other surface of the plate-shaped or frame-shaped surface material. In addition, the locking projections of the water impermeable film retainer plate penetrate through the through holes formed in the tip mounting member that is fixed directly or integrally to the tip of this unit water impermeable film. Installed in such a state, excavation and insertion of the water-blocking film together with the water-blocking film building device, and then by moving the deployment frame to the side, the folded portion of the attached water-blocking film is extended over the entire length. After deploying it sideways, pull up only the surface material for attaching the water-blocking film while removing the bottom edge of the water-blocking film with the above-mentioned co-raising preventive tool, and then remove the co-raising preventive tool. To do. In this case, the tip mounting member of the unit water-impervious membrane is preferably an anchor-shaped tip shoe.

[0017]

First, in the case of the first water-impervious membrane installation device, both side edge portions of the unit impermeable membrane to be installed are attached in a state of being folded back to the other side of the plate-shaped surface member or the frame-shaped surface member. After the ground is inserted in that state, the folded portion of the attached water shield film can be laterally deployed over the entire length by moving the deployment frame laterally. In addition, since the building device is pulled up and removed after it has been deployed over the entire length, it is possible to pull up and remove the building device without friction or catching and without raising the water-blocking film together.

Further, in the case of the second water impermeable membrane building device, further, with respect to the through hole formed in the tip mounting member fixed to the tip of the unit water impervious membrane directly or integrally. The ground is inserted with the locking projections of the water impermeable membrane holding plate penetrating, and then the folded portion of the water impermeable membrane attached by moving the deployment frame to the side is extended over the entire length. After unfolding to one side, while pulling down the lower end of the water blocking film by the co-raising prevention device, only the surface material for attaching the water shielding film is pulled up and removed, and then the co-raising prevention device is pulled up and removed. Therefore, the friction at the time of pulling up the attachment surface material, which is the main cause of the double rise, can be cut off, and the double rise can be completely eliminated.

Further, a long and narrow bag body which is continuous in the building direction is formed on both side edge portions of the water blocking film to be built in, and after the bag is built up, a solidifying material is filled into the bag body to form the water blocking film. The water-stopping property of the wrap portion is improved.

[0020]

EXAMPLES The present invention will be described in detail below based on examples.
First, a chain cutter type grooving machine for building a water-blocking film building device (hereinafter, simply referred to as a building frame) according to the present invention will be described in detail with reference to FIGS. 10 to 18. A guide post 2 is erected on a moving vehicle 1 such as a crawler. A plate-shaped support member 4 having a vertically long house shape is provided along the guide post 2 via a slider 3 so as to be movable in the direction opposite to the ground. The center of the support 4 is a cutout 4a.

Corner sprocket wheels 5A, 5B, 6A and 6B are provided at both lower corners of the support 4, drive sprockets 7A and 7B are provided at the top portion, and guide sprockets 8A, 8B, 9A and 9B are provided at the upper corner portions. Each is pivotally supported.
An endless chain 10A is attached to each of these A-system sprockets.
However, the endless chain 10B is wound around each sprocket of the B system.

A connecting member 12 having an excavating blade 11 is provided by connecting a pair of these endless chains 10A and 10B arranged in parallel. In the embodiment, as shown in detail in FIGS. 14 and 15, the connecting members 12 are laid across the link plates, and the drilling blades 11 are spaced along the longitudinal direction of one connecting member 12. Four are projected. Further, the arrangement mode of the four drilling blades 11 is shown in FIG.
Adjacent coupling members 12, 1 as clearly shown in FIG.
Between the two, the excavating blades 11 are arranged in a staggered manner, and the excavating blades 11, 11 ... Group have a width corresponding to the length of the connecting member 12. Further, with respect to the moving direction of the chains 10A, 10B, a non-excavation blade region L having a length larger than the width W of the building frame P and having no connecting member 12 is secured.

On the other hand, a hydraulic motor 13 fixed to the support 4 is connected to the drive sprockets 7A and 7B, whereby the endless chains 10A and 10B are connected.
Are designed to move in sync.

On the other hand, as shown in FIG. 11, the built-in frame P is held by the chucks 14a, 14a of the chuck cylinders 14, 14 fixed to the support 4. Reference numeral 15 is a protective fence against movement of the respective endless chains 10A and 10B.

As clearly shown in FIGS. 12 to 17, the corner sprocket wheels 5A, 5A axially supported by the support 4 are provided.
Disc-shaped cutting rotors 16A, 16B, 17A, 17B are integrated outside the shafts that hold B, 6A, 6B. Cutting bits 18 are integrated around each of these cutting rotors at intervals. As shown in FIG. 17, each cutting rotor 16 having a cutting bit 18
A, 16B, 17A, 17B are endless chains 10A,
Since it is located so as to project outward from 10B,
It is responsible for cutting the portion outside the cutting area of the endless chains 10A, 10B.

In the apparatus thus constructed, the building frame P is arranged between the endless chains 10A and 10B,
Further, the lower end of the built-in frame P is located above the lowermost path of the connecting member 12, that is, the lowermost part of the path of the endless chain, and the upper end thereof is the chuck cylinder 14,
It is gripped by 14 chucks 14a, 14a. In such a state, the excavator moves the endless chains 10A, 10B while pressing the slider 3 downwardly to forcibly drive the slider 3 or by the self-weight of the excavator, and the cutting rotors 16A, 16B, 17A, 17B.
While rotating the, excavation of trenches is performed.

When the excavation and the insertion of the building frame P are completed, the endless chains 10A and 10B are moved to bring the endless blade region L to the lower end. Then, the chuck 14 of the chuck cylinder 14,
The gripping of the building frame P by a and 14a is released, the wire 19 is wound by the winding winch 20, and only the excavation device is pulled up and removed from the ground. In this process, the built-in frame P relatively passes through the non-excavation blade area L, so that it is left as it is in the ground.

When the non-excavation blade area L is formed, it is formed in advance as described above, and after the excavation and the insertion and installation are completed, the connecting members 12 ... May be.

Next, the building frame 20 according to the present invention will be described in detail. As shown in FIG. 1, a built-in frame 20 according to the present invention includes a water-impervious film attachment frame 21 having a length dimension of a unit impermeable film to be almost installed, and both sides of the water-impervious film attachment frame 21. It is composed of a laterally movable expansion frame 22 that is integrally provided in a part, and is also provided with a water impermeable film co-raising prevention tool 23.

The water-permeable film attachment frame 21 is an upper frame 21.
a, an outer frame composed of a lower frame 21b and side frames 21c, 21d, and a frame-shaped face material in which horizontal intermediate members 21i, 21j ... And vertical intermediate members 21e to 21h are arranged in a lattice pattern inside the outer frame. An insertion hole S is formed between the vertical intermediate members 21g and 21h so that the presser bar 23a of the co-raising prevention member 23 can be inserted therethrough. In addition, on the upper surface of the upper frame 21a, suspension hooks 26, 26 for lifting by a mobile crane or the like are provided. Further, instead of the water-blocking film attachment frame 21, an attachment face material made of a plate-like body can be used, but it is disadvantageous in comparison with the frame-like face material of FIG. 1 in terms of weight.

The development frames 22 provided on both sides of the water-permeable film attachment frame 21 are substantially attached to the attachment frame 21.
Is a rod-shaped member having the same length as the
Are supported by expansion cylinders 24, 24, ... And links 25a, 25b that are fixed to the expansion cylinders 24, 24, and are movable laterally by the expansion / contraction operation of the expansion cylinders 24, 24.

On the other hand, the co-raising prevention tool 23 has a holding rod 23a which is inserted into the insertion hole S of the water-permeable film attachment frame 21.
And a pressing plate 23b fixed to the tip of the pressing plate 23b, which is a T-shaped member, and at least one or more waterproofing film locking projections 23c are provided on the distal end surface of the pressing plate 23b. ing.

On the other hand, as shown in FIG. 3, the built-in water-blocking film M is provided with an anchor-shaped tip shoe 27 integrally fixed to the tip portion by fasteners 28, 28, A through hole 27a is formed in the tip shoe 27 so that the water-shielding film locking projection 23c of the common rising prevention tool 23 can be locked in the inserted state.

The water-blocking film attachment frame 21 and the co-raising prevention device 23 are relatively movable, that is, the water-barrier film M built by the co-raising prevention device 23 from the installed state of the water-shielding film. Only the water-shielding film attachment frame 21 can be pulled upward while keeping it from being raised together.

Using the built-in frame 20, the water-blocking film M
In order to build the structure, first, the water-blocking film M is attached according to the procedure shown in FIG.

As shown in FIG. 4 (A), the water-blocking film M is spread on the ground or floor, and then the built-in frame 20 is placed thereon, and the side portions of the built-in frame 20 are placed. The portion protruding from is folded back so as to wrap the built-in frame 20. To keep this folded state, tape 3 around it.
0, 30 ... The tapes 30, 30, ...
Since the expansion cylinders 24, 24 ... Extend and are torn when the expansion frame 22 is moved,
Select and use one with appropriate strength. Specifically, a pressure-sensitive adhesive tape made of paper or cloth is sufficient. At this time, the water-blocking film attachment frame 21 and the co-lifting preventive tool 23 are in the assembled state in the state of FIG. It is in a state of being penetrated through the through hole 27a.

When the preparation is completed, as shown in FIG. 5, the built-in frame 20 with the water-blocking film attached is suspended by a crane or the like to support the chain cutter type grooving machine 1. Install it inward and start grooving. In addition, 31 is H steel installed for the ruler.

As shown in FIG. 6, the building frame 20 is built by inserting the supporting body 4 together with the supporting body 4 to a predetermined depth and then pulling only the supporting body 4 upward to remove it. Leave only the ground. The support 4
In order to prevent the built-in frame 20 from being lifted up by pulling up the building frame 20, for example, as shown in FIG. 7, a holding member 33 laid between a ruler 31 and the head of the built-in frame 20 is attached to the backhoe 32. By pulling up the support 4 in the state of being pressed down by the above, it is possible to prevent the built-in frame 20 from rising together.

Next, when the erection frame 20 is erected, as shown in FIG.
The construction of the construction frame 20 'is performed together with the grooving in the adjacent portion while avoiding mutual interference by constructing steel. In the meantime, the expansion frame 22 on one end side of the existing built-in frame 20
And the water-blocking film M is developed. When the building of the built-in frame 20 'is completed, the H steel 34 is removed, and the expansion frame 22 on the other end side of the built-in frame 20 is moved to expand the other end side of the water shield film M.

When the development of the water blocking film M is completed, the built-in frame 20 is pulled up and removed. With respect to the pull-up, first, only the water-blocking film attachment frame 21 is pulled up and removed while the water-blocking film M built up by the joint rise prevention tool 23 is being pressed down. Then, the co-raising prevention tool 23 is pulled up to leave only the water shield film M.

Then, as shown in FIG. 8C, the expansion frame 22 'at one end of the built-in frame 20' is moved to expand one edge of the water-blocking film M'and the existing water-blocking film M is removed. Wrap with side edges. Hereafter, in accordance with this procedure, the water blocking film M is sequentially
Extend.

Further, in the case of the water-blocking film M shown in FIG. 8, long and narrow bags 35 are formed on both side edges of the water-blocking film M by folding back over the entire length of the water-blocking film M.
After the completion of the construction, the solidified material such as cement milk in the bag body 35 is filled according to the procedure shown in FIG. 9 to make the water blocking film M and M ′ adjacent to each other have good waterproofness. For filling with cement milk or the like, the mouth tube 36 for injection at the mouth of the bag body 35 is inserted, and the injection hose 36
This is done by injecting the cement milk sent by.

[0043]

As described above in detail, according to the present invention, the construction of the water blocking wall for blocking the groundwater is facilitated and the work for installing the water blocking film in the excavation trench is facilitated. Since the built-in water-impervious film is provided with the expanding means for wrapping each other, the water-impervious film can be installed in the ground in a exactly predetermined expanded state and with mutual lap portions.

[Brief description of drawings]

FIG. 1 is a front view of a building frame according to the present invention.

FIG. 2 is an enlarged perspective view of a main part of a building frame.

FIG. 3 is an enlarged perspective view of a main part of a building frame.

FIG. 4 is a procedure diagram showing a procedure for attaching a water-blocking film to a building frame.

FIG. 5 is a procedure diagram showing a procedure for mounting the built-in frame on the grooving machine.

FIG. 6 is a diagram showing a procedure of an installation method according to the present invention.

FIG. 7 is a diagram showing a common rise prevention procedure for the built-in frame.

FIG. 8 is a procedural diagram showing a development procedure of a water-blocking film.

FIG. 9 is a diagram showing how to inject a water-blocking film into a bag.

FIG. 10 is a side view of a chain cutter type grooving machine.

FIG. 11 is a front view thereof.

FIG. 12 is an enlarged front view.

FIG. 13 is an enlarged side view.

FIG. 14 is a front view of the chain.

FIG. 15 is a side view showing an arrangement mode of a connecting member with respect to a chain.

16 is an enlarged front view of the main part of FIG.

FIG. 17 is a partially cutaway side view thereof.

FIG. 18 is an explanatory diagram of an excavated state.

[Explanation of symbols]

1 ... Chain cutter type grooving machine, 2 ... Guide post, 3
… Slider, 4… Support, 5A ・ 5B ・ 6A ・ 6B ...
Corner sprockets, 7A, 7B ... Drive sprockets, 8
A ・ 8B ・ 9A ・ 9B ... Guide sprocket, 10A ・
10B ... endless chain, 11 ... drilling blade, 12 ... connecting material,
13 ... Hydraulic motor, 14 ... Chuck cylinder, P ...
Planar body, L ... No digging blade area, 20 ... Built-in frame, 21
… Built-in frame, 22… Deployment frame, 23… Co-raising prevention tool, 24… Deployment cylinder, 25… Tip shoe

 ─────────────────────────────────────────────────── ─── Continuation of front page (73) Patent holder 000112093 Hirose Co., Ltd. 2-3-3, Nakajima, Nishiyodogawa-ku, Osaka-shi, Osaka (73) Patent holder 591039953 Fudou Giken Co., Ltd. 1-2, Taito-ku, Taito-ku, Tokyo No. 1 (73) Patent holder 000115463 Light Industry Co., Ltd. 4-35 Kudankita 4-chome, Chiyoda-ku, Tokyo (73) Patent holder 000176785 Mitsubishi Construction Co., Ltd. 3-36 Nihonbashihonmachi, Chuo-ku, Tokyo (73) ) Patent holder 391064418 Kurosawa Geomec Co., Ltd. 5-40-8 Shibayama, Funabashi-shi, Chiba (72) Inventor Shohei Senda 1-7-2 Taito, Taito-ku, Tokyo Akishu Building Civil Engineering Research Center ( 72) Inventor Yasuo Miyazaki 2-16-6 Minami Oimazato, Higashinari-ku, Osaka City, Osaka Prefecture (72) Naoki Jinnai, 1-2, Koraku, Bunkyo-ku, Tokyo No. 7 Sanshin Construction Industry Co., Ltd. (72) Inventor Koichi Inagawa 8-14-14 Ginza, Chuo-ku, Tokyo Nikko Construction Co., Ltd. (72) Inventor Osamu Ikuhara 3-chome Nakajima-cho, Chuo-ku, Kobe-shi, Hyogo No. 1 Port Island Residential Building No. 41 No. 102 (72) Inventor Toshihiro Exit 5313-4 Tomonuma, Nogi-cho, Shimotsuga-gun, Tochigi Prefecture (72) Masatsugu Yamaguchi 4-35, 9th Dan, Chiyoda-ku, Tokyo Light Industrial Co., Ltd. (72) Inventor Hiroaki Omi 3-6 Nihonbashihonmachi, Chuo-ku, Tokyo Mitsubishi Construction Co., Ltd. (72) Masayuki Kurosawa 4-10-10-903 Hirai, Edogawa-ku, Tokyo (56) References Special Kaihei 6-336735 (JP, A)

Claims (6)

(57) [Claims] 1. A water impermeable film building apparatus for additionally installing a unit impermeable film to be installed and building simultaneously, which is a surface for mounting a water impermeable film composed of a plate-shaped surface material or a frame-shaped surface material. For deploying the water shield film, which is movable laterally on both sides of the material and is folded back to the other surface side at both side edges of the surface material for attaching the water shield film, over the entire length thereof. A water-permeable film installation device characterized by having a deployment frame. 2. A tip surface of a locking projection for locking in a through hole formed in a tip mounting member fixed to the tip portion of the unit water-impervious film directly or integrally. And a holding bar having a length substantially equal to or greater than the length dimension of the water impermeable film building device, the water impermeable film holding plate being fixed to the back surface of the water impermeable film holding plate. 2. The impermeable membrane erection according to claim 1, further comprising a co-raising prevention member that is configured to be movable and separable from the impermeable membrane erection device with the pressing rod as a guide member. apparatus. 3. The water impermeable membrane installation device according to claim 2, wherein the tip mounting member of the unit water impermeable membrane is an anchor-shaped tip shoe. 4. The impermeable membrane building apparatus according to claim 1, wherein both side edge portions of the unit impermeable membrane to be built are attached in a state of being folded back to the other surface side of the plate-shaped surface material or the frame-shaped surface material. Then, the excavation and the impermeable membrane building device are installed together with the impermeable membrane,
Next, the deployment frame is laterally moved to laterally deploy the folded-back portion of the water-impervious membrane additionally provided, and then the water-impervious membrane installation device is pulled up and removed. How to install a water barrier. 5. The impermeable membrane building apparatus according to claim 2, wherein both side edge portions of the unit impermeable membrane to be built are folded back to the other surface of the plate-shaped surface member or the frame-shaped surface member. Along with
Attached directly to the tip of this unit water-permeable membrane or in a state in which the locking projections of the water-permeable membrane pressing plate penetrate through a through hole formed in a tip mounting member that is integrally fixed. Excavation and insertion of water-blocking film along with water-blocking film building equipment,
Then, by moving the expansion frame laterally, the folded portion of the water-impervious film additionally attached is laterally expanded over the entire length, and then the lower end of the water-impervious film is pressed by the co-raising prevention device. A method of installing a water-blocking film, characterized in that only the surface material for attaching the water-blocking film is pulled up and removed, and then the joint rise prevention device is pulled up and removed. 6. A slender bag body which is continuous in the building direction is formed on both side edge portions of the impermeable membrane to be built, and the solidified material is filled into the bag body after the bag is built. Item 4
Alternatively, the method of installing the water-blocking film according to item 5.