KR100753018B1 - Reinforced material injected into soil - Google Patents

Abstract

A ground reinforcement material is provided to increase economic effect while grouting by grouting tightly using an air exhaust tube of an injection adapter unit and separating the injection adapter unit after completing grouting work. The ground reinforcement material(100) includes a hollow rod(110) inserted to an excavation hole and provided with a through hole in the longitudinal direction to inject filler(162) such as cement milk and resins simply, a packer(120) surrounding the outer circumferential surface of the hollow rod and formed on the inside of the excavation hole to prevent the leakage of the filler, a fixing member(130) composed of a plate(132) and a nut(134) and surrounding the outer circumferential surface of the hollow rod to fix the hollow rod to the outside ground of the excavation hole, an injection adapter unit(140) composed of a tube(142) inserted to a through hole of the hollow rod and provided with a flow passage to move air and an adapter body(144) coupled with the hollow rod, a valve(150) inserted between a vinyl pack and the adapter body and opened to inject the filler and closed after discharging residual filler of the hollow rod after injection, and a vinyl pack(160) placed on one side of the valve and stored with filler.

Description

Ground reinforcement {Reinforced material injected into soil}

1 is a cross-sectional view of the ground reinforcing material according to the first embodiment of the present invention,

2 is a cross-sectional view of the ground reinforcing material according to a second embodiment of the present invention,

3 is a state diagram used in the ground reinforcement material according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100 Ground reinforcement 110 Hollow rod

120 Packer 122

130 fixing element 132 plate

134 Nut 140 Injection Adapter Unit

142 Tube 144 Adapter Body

150 ... valve 160 ... vinyl pack

162 ... filler 112 ... additional hollow rod

114 ... sleeve

The present invention relates to a ground reinforcing material, and more particularly, it can be grouted tightly by an air discharge tube during grouting operation, and after completion of grouting operation, the injection adapter unit can be detached and can be repeatedly used economically. It relates to ground reinforcement that can be grouted.

Recently, the use of subsidiary excavation techniques is increasing in order to reduce the difficulties and concerns related to the excavation work, such as increasing the stability of underground structures, preventing damages of neighboring structures, and resolving complaints. In some cases, two methods, such as order grouting and reinforcement grouting, may be used to obtain both order and ground reinforcement effects. In general, as a secondary excavation method related to underground excavation is a multi-stage grouting method that is reinforced by using a steel pipe.

Conventional steel pipe reinforced multi-stage grouting method or RPU method proceeds in the order of gang drilling, steel pipe construction, caulking and sealing, grouting, and is mainly suitable for the order and reinforcement of soft soil or weathered rock layers.

In the case of a tunnel, drill a hole about Φ125 radially from the circumferential surface, enter a small diameter rape equipped with a spray hole and a backflow prevention rubber band, fill the grout material between the steel pipe and the hole, and use the caulking material to insert the hole in the hole. It prevents grout from leaking out.

The multi-stage grouting is performed by spraying the grout material into the grout material injection hole while moving the packer in the steel pipe.

Conventional steel pipe reinforcement multi-stage grouting method has been progressed in this order has a number of problems. For example, since grout injection pipes are steel pipes, they are likely to corrode and are not suitable as permanent reinforcements for their purposes.

In addition, there is a disadvantage in that it takes a long time due to the difficulty of cutting the exposed steel pipe when proceeding the excavation, which is a subsequent process after grouting.

In addition, the longer the reinforcement depth is required depending on the ground condition and the cross-sectional area of the tunnel, the longer steel pipe is required.In this case, due to the weight of the steel pipe, the steel pipe acts as a self-weight in the tunnel crown part, and the ground can be a structural problem. Difficulties such as problems and problems caused by breakage of the grout nozzle banding area are accompanied.

In addition, the resin which has been used as a conventional injection material is expensive, and the cement paste requires a lot of equipment, which leads to a complicated installation, thus causing a problem that requires additional power or additional equipment.

The present invention was created to solve the above problems, can be grouted tightly by the air discharge tube during grouting operation, and after completion of the grouting operation, the injection adapter unit can be separated and can be used repeatedly economically The purpose is to provide a ground reinforcement that can be grouted.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. In addition, the objects and advantages of the invention may be realized by the means and combinations indicated in the claims.

The present invention for achieving the above object, in the ground reinforcing material to be inserted into the drilled drilling holes for the ground reinforcement for injecting the filler, the rod-shaped hollow inserted in the drilling hole and the through-hole formed in the longitudinal direction road; A fixing member surrounding the hollow rod outer circumferential surface and fixing the hollow rod to the outer ground of the excavation hole; And an adapter body inserted into the hollow rod through-hole and having a flow path formed in a longitudinal direction, the adapter body being formed on one side of the tube and the fixing member and surrounding the end of the tube and fitting with the hollow rod through which the air moves. It provides a ground reinforcement material comprising an injection adapter unit.

Here, the injection adapter unit is formed on one side, it is preferable to further include a valve opening for injecting the filler, after closing the discharge of the remaining filler of the hollow rod after the injection is finished.

In addition, the valve is preferably formed on one side further comprises a plastic pack for supplying a filler into the excavation hole.

In addition, the hollow rod, an additional hollow rod is formed in the direction in which the filler of the hollow rod is discharged, the hole is formed in the longitudinal direction; And a sleeve which wraps around the outer circumferential surface of the end portion of the hollow rod and the end portion of the additional hollow rod contacting the hollow rod and is bolted to the hollow rod and the additional hollow rod.

Furthermore, it is preferable to further include a packer that surrounds the outer surface of the hollow rod and is formed inside the excavation hole to prevent leakage of the filler supplied to the excavation hole.

In addition, it is preferable to further include a pedestal formed on one side of the packer to prevent the packer from falling off.

In addition, the location of the packer is preferably movable on the hollow rod surface.

In addition, the fixing member, the plate surrounding the hollow rod outer circumferential surface is attached to the outer ground; And a nut formed on one side of the plate and fastening the plate to the outer ground.

Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to explain their invention in the best way. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a cross-sectional view of the ground reinforcing material according to the first embodiment of the present invention, Figure 2 is a cross-sectional view of the ground reinforcing material according to a second embodiment of the present invention and Figure 3 is a state diagram of the ground reinforcing material according to the present invention.

First, Figure 1 is a cross-sectional view of the ground reinforcing material according to the first embodiment of the present invention. Referring to the drawings, the ground reinforcing material 100 according to the present invention, the hollow rod 110, the packer 120, the fixing member 130, the injection adapter unit 140, the valve 150 and the plastic pack 160 Include.

The hollow rod 110 is inserted into the excavation hole and has a rod shape formed with a through hole in the longitudinal direction. Through the above configuration, conventionally, there was a problem of adding a tube for injecting the filler 162 into the excavation hole using reinforcing bars, but the filler 162 may be easily injected through the hollow rod 110. .

Here, the filler 162 is preferably any one of cement milk and resin.

The packer 120 surrounds the outer circumferential surface of the hollow rod 110 and is formed inside the excavation hole to prevent leakage of the filler 162 supplied to the excavation hole. When the hollow rod 110 is inserted into the excavation hole of the tunnel slope through the above configuration and the filler 162 is injected from the up direction, the filler 162 is prevented from leaking down the excavation hole. It can be, and the filler 162 can be stably injected into the drilling hole.

In addition, it is preferable that the packer 120 further includes a pedestal 122 formed on one side to prevent the packer 120 from falling off. Through the above configuration, since the packer 120 is a flexible material, the packer 120 supports the packer 120 so that the packer 120 flows downward along the outer circumferential surface of the hollow rod 110. prevent.

In addition, the position of the packer 120 is characterized in that the movable on the surface of the hollow rod (110). Through the above configuration, the packer 120 may be mounted at a position capable of maximizing the function of the packer 120.

The fixing member 130 is formed on one side of the packer 120 and surrounds the outer circumferential surface of the hollow rod 110 and fixes the hollow rod 110 to the outer ground of the excavation hole.

In this case, the fixing member 130 includes a plate 132 and a nut 134.

The plate 132 is formed on one side of the packer 120 is attached to the outer ground.

The nut 134 is formed on one side of the plate 132 to tighten the plate 132 to the outer ground. Through the above configuration, the plate 132 and the nut 134 prevent the hollow rod 110 from falling out of the excavation hole, and when the injection of the filler 162 into the excavation hole is completed, the fixing The member 130 is attached to the outside of the excavation hole to support the hollow rod 110.

The injection adapter unit 140 includes a tube 142 and the adapter body 144.

First, the tube 142 is inserted into the through hole of the hollow rod 110 and a flow path is formed in the longitudinal direction, so that air moves through the flow path.

Through the above configuration, conventionally, the air discharge tube could only be used once, and there was a need to install it separately, but the tube 142 of the present invention is integrally formed with the adapter body 144 to be described later. When the injection of the concrete milk 162 of the excavation hole is completed, it can be separated from the hollow rod 110 together with the adapter body 144, so that it can be used repeatedly and does not need to be separately mounted. There is an advantage.

The adapter body 144 is formed on one side of the fixing member 130 and surrounds the end of the tube 142 and is fitted to the hollow rod 110. More specifically, the adapter body 144, the end portion of the tube 142 is bent in a 'b' shape and protrudes to the outside, the air inside the end of the tube 142 protruding to the outside Discharged.

In addition, one side of the adapter body 144 is fitted with the hollow rod 110, the other side is fitted with the valve 150 to be described later.

The plastic pack 160 is formed on one side of the valve 150 to be described later, and the filler 162 is stored. More specifically, the plastic pack 160, by mixing water and cement in the field to make the filler 162, one side is fitted with the valve 150 to be described later, the other side of the valve 150 is the injection In combination with the adapter unit 140 can be easily and effectively mounted.

In addition, since the mixing of water and cement in the plastic pack 160 can be done manually, grouting pumps and mixers are unnecessary as in the related art, and thus economical grouting can be performed without maintenance and maintenance. In addition, the plastic pack 160 is not limited to the plastic pack.

The valve 150 is formed on one side of the injection adapter unit 140, that is, interposed between the plastic pack 160 and the adapter body 144 and opened to inject the filler 162, and the injection is performed. After the completion of the residual filler of the hollow rod 110 is closed.

More specifically, the valve 150 is opened when injecting the filler 162 into the excavation hole, and when the injection is completed, will be described later to prevent the loss of the filler remaining in the hollow rod 110. The residual filler is discharged into the plastic pack 160. Then, the valve 150 is closed to prevent backflow of the filler 162 and to separate the injection adapter unit 140.

In addition, the valve 150 may prevent the backflow of the concrete milk 162 even when the grouting operation is temporarily stopped when the filler 162 is injected upward or when the plastic pack 160 to be described later is replaced.

2 is a cross-sectional view of the ground reinforcement material according to the second embodiment of the present invention. Here, the same reference numerals as in FIG. 1 shown above indicate the same members, and thus description thereof will be omitted.

The additional hollow rod 112 is formed in the direction in which the filler 162 of the hollow rod 110 is discharged, the hole is formed in the longitudinal direction.

The sleeve 114 surrounds the outer circumferential surface of the end of the hollow rod 110 and the end of the additional hollow rod 112 contacting the hollow rod 110 and the hollow rod 110 and the additional hollow rod 112. ) And bolt.

More specifically, the sleeve 114 serves as a connecting member for connecting the hollow rod 110 and the additional hollow rod 112, the inner surface of the sleeve 114 and the hollow rod 110 and the additional hollow The length of the hollow rod 110 and the additional hollow rod 112 may be changed by bolt coupling, tightening and loosening of the surface of the rod 112.

Through the above configuration, when the length of the excavation hole is long, it is possible to extend the length of the hollow rod 110 in which the filler 162 is injected. Therefore, the length of the hollow rod 110 may be changed in various ways without being limited to the length of the excavation hole.

3 is a state diagram used in the ground reinforcement material according to the present invention. As shown, an excavation hole is formed in the tunnel slope and the ground reinforcement of the present invention is injected upward. In addition, a portion of the hollow rod 110, the packer 120, the pedestal 122 and the tube 142 is included in the excavation hole, the fixing member 130, the adapter outside the excavation hole The body 144, the valve 150, and the plastic pack 160 are formed. Therefore, when the injection of the filler 162 of the excavation hole is completed, the hollow rod 110, the packer 120 and the pedestal 122 is included in the excavation hole, and the fixing member 130 is disposed outside the excavation hole. Only formed, the injection adapter unit 140, the valve 150 and the plastic pack 160 is separated.

In addition, the plastic pack 160 may be separated and grouted using a pump.

As described above, although the present invention has been described by means of a limited embodiment and drawings, the present invention is not limited thereto and is described below by the person skilled in the art to which the present invention pertains. Various modifications and variations are possible without departing from the scope of the appended claims.

As described above, the ground reinforcement material of the present invention provides the following effects.

First, the grouting operation can be performed in a tight manner by the air discharge tube of the injection adapter.

Second, after the grouting operation is completed, the injection adapter unit can be separated and can be economically grouted since it can be used repeatedly.

Third, grouting pumps and mixers are not required, so it is possible to economically grind the tunnel slope without additional power or additional equipment.

Fourth, grouting can be easily performed regardless of the internal length of the excavation hole.

Claims (8)

In the ground reinforcement for inserting the filler is inserted into the drilled hole for the ground reinforcement, A rod-shaped hollow rod inserted into the drilling hole and having a through hole formed in a longitudinal direction thereof; A fixing member surrounding the hollow rod outer circumferential surface and fixing the hollow rod to the outer ground of the excavation hole; And an adapter body inserted into the hollow rod through-hole and having a flow path formed in a longitudinal direction, the adapter body being formed on one side of the tube and the fixing member and surrounding the end of the tube and fitting with the hollow rod through which the air moves. Ground reinforcement material comprising an injection adapter unit. The method of claim 1, The reinforcement material is formed on one side of the injection adapter unit further comprises a valve opening for injecting the filler, and closing and then discharging the remaining filler of the hollow rod after the injection is finished. The method of claim 2, The ground reinforcement is formed on one side of the valve further comprises a plastic pack for supplying a filler into the excavation hole. The method of claim 1, The hollow rod, An additional hollow rod formed in a direction in which the filler of the hollow rod is discharged, and a hole formed in a longitudinal direction; And Ground reinforcement further comprises a sleeve for bolting the hollow rod and the additional hollow rod wrapped around the outer peripheral surface of the end of the hollow rod and the end of the additional hollow rod in contact with the hollow rod. The method of claim 1, Ground reinforcing material surrounding the hollow rod further comprises a packer formed inside the excavation hole to prevent leakage of the filler supplied to the excavation hole. The method of claim 5, Ground reinforcement is formed on one side of the packer further comprises a pedestal for preventing the fall of the packer. The method of claim 5, The location of the packer is ground reinforcement, characterized in that movable on the surface of the hollow rod. The method of claim 1, The fixing member, A plate surrounding the hollow rod outer circumferential surface and attached to an outer ground; And Ground reinforcement, characterized in that it comprises a nut formed on one side of the plate to tighten the plate to the outer ground.

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