KR101965920B1 - Grout injection apparatus - Google Patents

Abstract

The present invention relates to a grout injection device, the grout injection device according to the present invention is installed in the place for injecting the injection material, and is coupled to the outer tube and the inner peripheral surface of the appearance that the filler can be discharged to one side; It characterized in that it comprises an inner tube to allow the injection material to be injected into the outer appearance, and a check means which is installed on one side of the inner tube and opened when the injection material is injected through the inner tube.
According to the present invention as described above, there is an advantage that can prevent the backflow of the groundwater flowing from the back of the tunnel by the check ball to allow only one direction rotation when the injection of the injection material for reinforcing the tunnel construction.

Description

Grout Injection Device {GROUT INJECTION APPARATUS}

The present invention relates to a grout injection device, and more particularly, a grout that can prevent the backflow of groundwater introduced from the back of the tunnel by a check ball that allows rotation in one direction only when injection of the injection material for reinforcing the backfill of the tunnel construction It relates to an injection device.

In general, in order to install a tunnel or underground structure on the lower part of the soft ground, the bearing capacity of the ground is strengthened in advance before the tunnel is excavated, so that the groundwater contained in the ground is blocked and the fall and excavation of the ground is prevented. The grouting method must be implemented to ensure the stability of the excavated surface.

In the grouting method for reinforcing the space on the back of the tunnel, the filling material is used to reinforce the filling material. The injection material is a liquid injection material in which various miscible materials are mixed according to the ground conditions and purposes, or it is necessary to form a standard and improve the function as an improved body. Granular injection materials such as mortar and concrete with viscous properties are used.

When filling the tunnel, the injection material is injected by using a grout injection device. In the related art, an injection material is injected into an inner tube coupled to an inner tube inserted into a perforated hole formed in a soft ground.

In addition, at the inner end of the inner tube of the conventional grout injection device as described above, the prevention cap (C) is installed to allow injection of the injection material and to prevent the pressurized ground water acting on the tunnel back from being introduced into the tunnel. As shown in, the end of the prevention cap is cut in a cross shape.

However, in the process of repeatedly injecting the injection material through the prevention cap, as shown in the partial enlarged view of FIG. 9, the cut portion of the prevention cap is not opened and returned to its original state, and the tunnel is not completely enclosed from the beginning. There was a problem that the groundwater in the back ground backflow.

Prior art related to this, Korean Patent Publication No. 10-2005-0020604 (name of the invention: GIM grout injection tip device for improving the soft ground and a grout injection method using the same, published date: March 10, 2003 There is).

The present invention has been made to solve the above problems, an object of the present invention is to prevent the backflow of groundwater introduced from the back of the tunnel by a check ball that allows only one rotation in the injection of the injection material for reinforcing the backfill of the tunnel construction It is to provide a grout injection device that can be.

In addition, the check ball is made of an elliptic sphere shape is to provide a grout injection device excellent in watertightness by sealing the inner tube while the shape of the check ball is variable during the backflow of groundwater.

In order to solve the above problems, the grout injection apparatus according to the present invention is installed in a place for injecting the injection material, and is coupled to the outer tube and the inner circumferential surface of the exterior, in which the filler can be discharged to one side. It characterized in that it comprises an inner tube to allow the injection material to be injected into the appearance, and a check means which is installed on one side of the inner tube and opened when the injection material is injected through the inner tube.

In addition, the outer peripheral surface of the inner tube is characterized in that it is screwed into the other inner peripheral surface of the appearance.

In addition, a stopper for sealing the outer side and the other side of the inner tube is characterized in that it is further included.

The stopper may include a coupling part coupled to an inner circumferential surface of the inner tube, and a sealing part sealing the outer end and the other end of the inner tube.

In addition, the inner circumferential surface of the outer surface, the screw coupling portion screwed to the outer circumferential surface of the inner tube, and formed on one side of the screw coupling portion, characterized in that it comprises a movable portion to ensure the movement of the check ball opened when filling the filler It is done.

In addition, the inner tube is characterized in that it has a shorter length than the appearance.

In addition, the check means is characterized in that the rubber check ball.

In addition, the check ball is characterized in that the cross-section is produced in the shape of a sphere (sphere).

In addition, the check ball is coupled to one side of the inner tube via a hinge, characterized in that rotated toward one side of the appearance.

In addition, one side is connected to the check ball, the other side is respectively connected to one side of the inner tube is characterized in that it further comprises a connecting line for controlling the rotation of the check ball.

In addition, an air layer is formed inside the check ball.

In addition, one side of the appearance, characterized in that it further comprises a cap that is broken when the filler is injected into one side of the appearance so that the filler can be discharged to one side of the appearance.

According to the present invention as described above, there is an advantage that can prevent the backflow of the groundwater flowing from the back of the tunnel by the check ball to allow only one direction rotation when the injection of the injection material for reinforcing the tunnel construction.

In addition, the check ball is manufactured in an elliptical sphere shape, and the shape of the check ball is variable during the backflow of the groundwater, thereby sealing the inner tube, thereby having an excellent watertightness.

1 is an exploded perspective view of the grout injection apparatus according to a preferred embodiment of the present invention and a view showing a partially cut state.
2 is a cross-sectional view showing a grout injection apparatus installed in the wall of the tunnel according to a preferred embodiment of the present invention.
3 is a view showing a state in which the check ball of the grout injection device according to an embodiment of the present invention is coupled to the inner tube.
4 is a view showing another embodiment in which the check ball of the grout injection device according to an embodiment of the present invention is coupled to the inner tube.
5 is a perspective view of a stopper of the grout injection apparatus according to a preferred embodiment of the present invention.
6 is a cross-sectional view of the check ball of the grout injection apparatus according to a preferred embodiment of the present invention.
7 to 8 are exemplary views showing the injection of the injection material into the space on the back of the tunnel using the grout injection apparatus according to a preferred embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described embodiments of the present invention. Like reference numerals in the drawings denote like elements. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

1 is an exploded perspective view of the grout injection apparatus according to a preferred embodiment of the present invention and a view showing a partially cut state, Figure 2 is a cross-sectional view showing a grout injection apparatus installed in the wall of the tunnel according to a preferred embodiment of the present invention 3 is a view showing a check ball of the grout injection device coupled to the inner tube according to a preferred embodiment of the present invention, Figure 4 is a check ball of the grout injection device according to a preferred embodiment of the present invention is coupled to the inner tube 5 is a perspective view of a stopper of the grout injection device according to a preferred embodiment of the present invention, Figure 6 is a cross-sectional view of the check ball of the grout injection device according to a preferred embodiment of the present invention.

Grout injection device according to a preferred embodiment of the present invention, the outer tube (100), the inner tube (200), check means are included, the stopper 400 may be further included.

First, the appearance 100 is demonstrated.

The exterior 100 is a member for injecting the injection material 10, that is, a member installed in the wall of the tunnel, the exterior 100 may be made of a synthetic resin material or a high hardness rubber material to ensure water tightness.

As shown in Figure 1, the outer peripheral surface of the outer surface 100 is provided with a plurality of projections 101, these projections 101 are increased in the ground force when installed on the wall of the tunnel of the present invention injection material 10 It should be securely fixed to the wall of the tunnel for injection.

In addition, the exterior 100 is open on one side and the other side, the cap 110 may be installed on one side, the cap 110 when the injection material 10 is injected into the wall of the tunnel, for example, the end is hard It is broken by a sharp rod.

Accordingly, the cap 110 is preferably made of a material (for example, plastic) that can be easily broken by an operator, and at the same time the cap 110 is not damaged in the process of the present invention is installed on the wall of the tunnel. It will have to be made to strength.

In addition, the other side of the appearance 100 may be sealed by a stopper 400 to be described later.

Meanwhile, as shown in FIG. 1, the exterior 100 may be divided into a screw coupling part 120 and a movable part 130, and are distinguished by the presence or absence of a screw thread on an inner circumferential surface thereof.

The screw coupling portion 120 is a portion that is screwed with the outer circumferential surface of the inner tube 200 to be described later, the movable portion 130 is a portion provided to ensure the movement when opening and closing the check ball 300 to be described later.

Next, the inner tube 200 will be described.

The inner tube 200 is a member coupled to the inner circumferential surface of the outer appearance 100, it may be made of the same material as the outer appearance (100).

The inner tube 200 is coupled to the inner circumferential surface of the appearance 100 has a double tube structure, and has a shorter length than the appearance, the inner tube 200 preferably has a length of about 70 to 80% compared to the appearance 100 It is not limited to this.

One side of the inner tube 200 as described above is provided with a check ball 300 to be described later, the other side may be sealed by a stopper 400 to be described later along with the appearance (100).

As shown in FIG. 1, the outer circumferential surface of the inner tube 200 is formed with a screw thread to be screwed with the screw coupling part 120 of the inner circumferential surface of the outer tube 100, and the inner tube 200 has an outer ( The other side of the inner peripheral surface of 100) is screwed into.

The injection material 10 is introduced into the other side of the inner tube 200 as described above, and is discharged to one side of the external appearance 100 described above. As shown in FIG. 8, the other side of the inner tube 200 may be injected using an injection apparatus having a length penetrating the inner tube 200.

Next, the checking means will be described.

In the present invention, the check means is a check ball 300, the check ball 300 is made of a rubber material. In addition, the check means may be a check valve that allows only the passage in one direction.

The check ball 300 is a member coupled to the side of the inner tube 200 via the hinge (H), the check ball 300 is rotated via the hinge (H) on one side of the inner tube (200). Possible coupling, the inner tube 200 may be rotated toward one side of the exterior 100 in a state coupled to the inner peripheral surface of the exterior (100).

As shown in FIG. 6, the check ball 300 is manufactured in a spherical shape having an ellipsoidal cross section so that the check ball 300 is easily opened even at a small force when the inner tube 200 is opened.

When the groundwater flows back from the wall of the tunnel, it is preferable to change the shape of the check ball 300 to completely seal one side of the inner tube 200, but the cross section is formed in a sphere shape. It could be.

In addition, it is preferable that the air layer 310 is formed inside the check ball 300. The air layer 310 has a feature of easily changing the shape of the check ball 300 according to the reverse flow of groundwater.

The air layer 310 as described above is provided with a flow path 311 connected to the outside of the check ball 300 so that the air introduced into the air layer 310 escapes to the outside through the flow path 311 (check ball ( It will be good to make the variation of 300 easy.

One side opening of the inner tube 200 is selectively opened by the rotation of the check ball 300 as described above, and is opened only when the injection material 10 is injected through the inner tube 200.

The opening of the inner tube 200 by the check ball 300 is pushed open by the pressure or external force applied from the inner tube 200.

As shown in FIG. 3, the check ball 300 is coupled to the hinge H provided at the outside of the inner tube 200, or as shown in FIG. 4, the inner tube 200 and the check ball ( 300 may be coupled to a hinge (not shown) provided in contact with the inside, it is also preferable that the connecting line 320 for controlling the rotation angle of the check ball 300 is installed.

The connecting line 320 is connected to one side of the check ball 300, the other side is connected to one side of the inner tube 200 serves to control the rotation of the check ball 300, such a connecting line 320 is elastic It is good to make a material (for example, fishing line) to control the rotation of the check ball 300, so that the check ball 300 can be quickly closed one side opening of the inner tube (200).

In FIG. 3, although the connecting line 320 is omitted in the coupling of the inner tube 200 and the check ball 300, the connecting line 320 may be installed.

Next, the stopper 400 will be described.

The stopper 400 is a member coupled to the other side of the above-described exterior 100 and the inner tube 200, the stopper 400 is made of a rubber material or synthetic resin material, as shown in Figure 5, the coupling portion 410 and the seal 420 is included.

As shown in FIG. 2, the coupling part 410 is a member coupled to the inner circumferential surface of the inner tube 200, and is preferably screwed to the inner circumferential surface of the inner tube 200. A cross of the 420 or a hexagonal groove is formed on the surface of the 420, and the coupling part 410 may be manufactured to be screwed to the inner circumferential surface of the inner tube 200 using, for example, a screwdriver or a hexagon wrench.

However, the stopper 200 as shown in Figure 2, as shown in Figure 2, the double injection so that the bolt member (B) can be inserted into the stopper 200, a part of the head of the bolt member (B) is Ensure exposure to the outside. Alternatively, the head of the bolt member B may be embedded in the stopper 200, and a perforation may be formed so that a fastening means such as a screwdriver or a hexagon wrench from the outside is accessible to the head of the bolt member B. .

The bolt member (B) as described above will be preferably a separate coating to prevent corrosion by moisture.

In addition, the sealing part 420 is a member for sealing the other end of the outer tube 100 and the inner tube 200 coupled to the inner circumferential surface of the outer tube 100, the other side of the outer tube 100 and the inner tube 200. Make sure that it is completely sealed.

Hereinafter, a method of injecting the injection material into the back of the tunnel using the grout injection device having the configuration as described above will be described.

First, as shown in FIG. 7, the bolt member B is removed in the state where the present invention is installed on the wall of the tunnel, and the stopper 400 coupled to the inner tube 200 is removed and the exterior 100 is removed. Open the other side of the inner tube (200).

Thereafter, the worker inserts a separate mechanism to the other side of the inner tube 200 to break the cap 110, the check ball 300 is pushed in one direction of the exterior 100 by the separate shredding tool (30) Is rotated.

Thereafter, the worker removes the shredding tool 30, and injects the injection material 10, in this case, the check ball 300 is rotated in one direction of the external appearance so that one side of the inner tube 200 is opened The injection material 10 is injected using the gun 20.

The injection material 10 injected as described above is discharged to one side of the exterior 100 and penetrated into the cavity inside the rear surface of the tunnel.

When the discharge of the injection material 10 is completed as described above, the injection gun 20 is removed, the stopper 400 is coupled to the inner tube 200, and then the stopper 400 is externally (using the bolt member B) ( Fix it to the other side of 100).

When the injection of the injection material 10 is completed, the check ball 300 seals one side of the inner tube 200 to prevent the groundwater from flowing out through the inner tube 200.

In addition, between the exterior 100 and the inner circumferential surface and the outer circumferential surface of the inner tube 200, a watertight material (eg, grease) for watertightness is applied or sealed with a watertight tape to seal the tunnel through the outer tube 100 and the inner tube 200. Prevent groundwater from entering walls.

Then, after the injection of the injection material 10 into the wall of the tunnel is completed, it would be better to remove the present invention and seal the place (groove) where the present invention was installed.

Although the grout injection apparatus according to the preferred embodiment of the present invention has been described as being installed in the wall of the tunnel, it may be installed in the underground structure in addition to the wall of the tunnel.

The best embodiments have been disclosed in the drawings and the specification. Herein, specific terms have been used, but they are used only for the purpose of illustrating the present invention and are not intended to limit the scope of the present invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100-appearance
200-inner tube
300-checkball
400-plug

Claims (12)

It is installed in the place for injecting the injection material, the outer tube and the filler can be discharged to one side,
An inner tube coupled to an inner circumferential surface of the exterior and allowing an injection material to be injected into the exterior;
Installed on one side of the inner tube includes a check means that is opened when the injection of the injection material through the inner tube,
The check means is a rubber check ball,
The check ball,
It is manufactured in the shape of a sphere having an elliptical cross section, and an air layer is formed inside the check ball, and a flow path connected to the outside of the check ball is provided so that air introduced into the air layer is external through the flow path. The check ball is variable while exiting to
One side is connected to the check ball, the other side is connected to one side of the inner tube has a connecting line for controlling the rotation of the check ball,
One side of the appearance, grout injection device characterized in that it further comprises a cap that is broken during injection of the filler to one side of the appearance so that the filler can be discharged to one side of the appearance.
The method according to claim 1,
Grout injection device, characterized in that the outer circumferential surface of the inner tube is screwed into the other inner circumferential surface of the outer tube. The method according to claim 2,
Grout injection device characterized in that it further comprises a stopper for sealing the outer side and the other side of the inner tube. The method according to claim 3,
The stopper is
Coupling portion coupled to the inner peripheral surface of the inner tube,
Grout injection device, characterized in that the sealing portion for sealing the outer end and the other end of the inner tube. The method according to claim 1,
The inner peripheral surface of the appearance,
A screw coupling part screwed to the outer circumferential surface of the inner tube;
Grout injection device is formed on one side of the screw coupling portion, characterized in that it comprises a movable portion to ensure the movement of the check ball is opened when filling the filler. The method according to claim 1,
The inner tube is a grout injection apparatus, characterized in that having a shorter length than the appearance. delete delete delete delete delete delete

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