KR101420758B1 - Packer fr sealing boring hole and sealing structure using it - Google Patents

Abstract

The present invention relates to an excavator airtight sealer and an excavator airtight seal structure having the same. More particularly, the present invention relates to an excavator airtight sealer for an excavator airtight sealer which can improve installation cost and construction quality, And can be reused repeatedly, thereby reducing the material cost and preventing pollution of the environment, and a drilling hole sealing structure having the same.
The excavator air-tight packing packer according to the present invention is installed at the entrance of a drill hole into which an underground anchor is inserted, wherein the excavator air-tight packing packer is anchored to the outer surface of the underground anchor, A cover portion, a drilling hole close cover portion integrally formed with the anchor close cover portion and being pressed and pressed against the inner surface of the drill hole, a fluid inlet chamber formed between the anchor close cover portion and the drill hole close cover portion, A packer main body having a hollow portion passing through the center of the anchor close cover portion so as to be inserted into the underground anchor; And a fluid injecting member connected to the packer body for injecting and discharging a fluid into the fluid inlet chamber.
The excavation-hole-sealing structure having the excavation-hole-sealing packer according to the present invention comprises a drilling-hole-sealing packer inserted into an outer periphery of an underground anchor inserted into a drilling hole formed in a ground, A digging air-tight sealing structure, comprising: the above-mentioned excavation air-tight packing packer; And a hermetic holding member which penetrates the fitting hole so that the ground anchor is inserted and shrinks when the anchor close cover part expands, thereby sealing a gap between the anchor close cover part and the ground anchor.

Description

TECHNICAL FIELD [0001] The present invention relates to a packing hole for a drilling hole and a drilling hole-

The present invention relates to an excavator airtight sealer and an excavator airtight seal structure having the same. More particularly, the present invention relates to an excavator airtight sealer for an excavator airtight sealer which can improve installation cost and construction quality, And can be reused repeatedly, thereby reducing the material cost and preventing pollution of the environment, and a drilling hole sealing structure having the same.

In general, the implementation of various civil engineering works such as road construction, housing complex construction, waterway and embankment construction involves cutting work. The cut-out formed by the cutting work has its own weak bearing capacity and collapse due to loss of soil Thereby increasing the risk.

Accordingly, the ground anchors are installed in the incision site to stabilize the ground, and when the loss of the soil is severe, the retaining walls are constructed by connecting the block to the exposed part of the anchor underground.

As a well-known method for installing the underground anchor, a drilling hole is drilled in a cutout, a ground anchor is inserted into a perforated drilling hole, and a grouting material is injected around the drilling hole. The underground anchor exerts tension to stabilize the incision site.

In addition, a packer for preventing the outflow of the grouting material to be injected is installed in the entrance of the excavation hole into which the underground anchor is inserted.

The packer may be manufactured in various shapes and structures. In general, the packer may be installed in an anchor body 100 as shown in Korean Utility Model Publication No. 20-2012-0001991 (refer to FIG. 1) And a binding band 111 for fixing the packer 110 to the anchor body 100. The front and rear packing parts 112,

2) of the Korean Registered Utility Model Registration No. 20-0368038 (see Fig. 2) has a double structure of an inner skin 10A and an outer skin 10B while being woven with a mixture of cotton and rubber, The body 11 having an expanding force so that the both ends thereof are covered with the anchors and the both ends thereof are connected to the anchors through the binding members 14 and 15 and expanded by the milk M injected into the anchors, And at least one pipe connecting portion 12 branched from the body and into which the milk injection pipe 4 for injecting the milk is inserted.

However, the conventional packer as described above has various problems as described below.

In order to fix the packer to the anchor in common, the above-described conventional packer requires that both sides of the packer are bound together by the band 111 and the binding members 14 and 15 so that it takes too much time for the work, There is a drawback that the sex is reduced.

Since the process of binding both sides of the packer with the band 111 and the binding members 14 and 15 depends on the manual operation, a sufficient fixing force can not be ensured and the leakage of the filling material can not be completely blocked. Particularly, the method of bundling and fixing the packer with a separate binding member always has a risk that the binding state is released when the high-pressure filling material is injected into the inside of the packer, so that the stability of the construction can not be secured. Accordingly, since the conventional packer as described above is difficult to keep the airtightness, high-pressure injection is not possible, so that the quality of construction due to poor filling is deteriorated and the grouting material flows out to the outside of the excavation hole and grouting material is not injected deep into the excavation hole The supporting force of the underground anchor can not be secured, which causes serious problems such as collapse of the retaining wall and loss of the earth.

Further, since the conventional packer can not disassemble the band 111 and the binding members 14 and 15 bound to the inside of the excavation hole after the grouting material is completely injected, it can not be separated and removed. Therefore, a separate packer is required for every excavation hole at the time of construction of the anchor underground, so that the material cost is increased and the packer is left in the ground, which causes contamination of the soil.

Disclosure of the Invention The present invention has been made in view of the above-described circumstances, and has as its object the provision of a drilling machine for a drilling machine, which is simple in installation and construction and excellent in hermetic sealing characteristics to improve construction cost and construction quality, And it is an object of the present invention to provide a sealing structure.

It is another object of the present invention to provide an excavator airtight packing machine and a excavation machine airtight seal structure having the excavator airtight sealer structure, which can be reused repeatedly to reduce material costs and prevent environmental pollution.

In order to achieve the above object, the excavator air-tight packing packer according to the present invention is installed in an inlet portion of a excavation hole into which an underground anchor is inserted, wherein the excavator air- And an anchor close cover portion which is pressed against the anchor close cover portion and is pressed against the inner surface of the excavation hole and pressed against the inner surface of the excavation hole, And a hollow portion passing through the center of the anchor close cover portion so as to be inserted and positioned in the underground anchor; And a fluid injecting member connected to the packer body for injecting and discharging a fluid into the fluid inlet chamber.

Wherein the fluid injection member is formed in a pipe shape so that one side of the fluid injection member is exposed to the outside of the packer main body and the other side of the fluid injection member is located inside the fluid injection chamber, And a fixing piece protruding from the front surface of the tightening plate and exposed to the outer surface of the packer main body and fixed by pressing.

Wherein the anchor close cover part and the excavation hole close cover part are composed of a bag-shaped fabric having one side of an inner side and an outer side spaced apart from each other so as to form a hollow part at the center thereof and an opening part formed on the other side, The anchor close cover portion and the other end portion of the excavation-hole-contact cover portion are airtightly sealed to each other so as to be hermetically sealed.

A pressing member which is formed on an outer surface of the anchor close cover and is in close contact with an outer surface of the underground anchor when the packer body is inflated; And a fixing member coupled to an outer surface of the drill-hole-contact cover portion and press-fitted into the inner surface of the drill hole when the packer main body is inflated.

In order to achieve the above object, a drilling hole-sealing structure having a drill-hole-sealing packer according to the present invention is characterized in that the drill hole is inserted into an outer periphery of an underground anchor inserted in a drill hole formed in a ground, An excavation hole-sealing structure comprising a packer for air-sealing, characterized in that: the excavator air-tight packing machine described above; And a hermetic holding member which penetrates the fitting hole so that the ground anchor is inserted and shrinks when the anchor close cover part expands, thereby sealing a gap between the anchor close cover part and the ground anchor.

The airtightness maintaining member may have a structure in which the fitting hole is perforated in the longitudinal direction at the center of a body formed in a rectangular pillar shape by a foam foam.

According to the excavator air-tight packing packer and the excavator airtight sealing structure having the same, the excavator airtight packing packer is constituted by a single member having a bag shape so that it is unnecessary to separately bind the binding members, It can be installed in a simple manner so that the workability is improved and the working time is shortened and the workability is improved.

According to the excavator air-tight packing packer and the excavator air-tight sealing structure having the excavator air-tight sealing structure according to the present invention, when the fluid is injected into the packer body without the necessity of tightening the binding member, There is no problem that the filler flows out due to the release of the bond, and the sealed state is maintained by the hermetic holding member, thereby improving the stability of the construction and the quality of the construction.

Further, according to the excavator-airtight packing packer and the excavator-airtight sealing structure having the excavator airtight sealer structure according to the present invention, the excavator airtight packing packer is composed of a single member, so that the storage, handling and use of the material is simple and can be repeatedly used The material cost can be reduced. In addition, since the excavator airtight packing packer does not remain in the ground when the construction is completed, it does not cause contamination of the soil, which is advantageous in that it can be eco-friendly construction.

1 and 2 are views for explaining a conventional excavator airtight packing machine,
3A and 3B are views for explaining a drilling hole-sealing packer according to an embodiment of the present invention, wherein FIG. 3A is a perspective view showing a drilling airtight sealing packer in a contracted state, FIG. 3B is a perspective view showing an expanded state Fig. 2 is a perspective view showing a digging airtight packing packer in the first embodiment.
4 is a view for explaining a detailed structure of a drill hole-sealing packer according to an embodiment of the present invention, which is a perspective view showing a state before assembly,
FIG. 5 is an enlarged view of part A of FIG.
6A and 6B are views for explaining a drilling hole sealing structure having a drilling hole-sealing packer according to an embodiment of the present invention;
FIGS. 7A and 7B are views for explaining a first modification of the excavator air-tight packing packer according to the embodiment of the present invention, wherein FIG. 7A is a sectional view showing a sectional structure in an expanded state, FIG. Sectional view showing a state in which the air-tight sealing packer is installed.
8A and 8B are views for explaining a second modified example of the excavator airtight packing packer according to the embodiment of the present invention, wherein FIG. 8A is a sectional view showing the excavator airtight sealing packer in an expanded state, 8B is a cross-sectional view showing the construction of the excavation airtight sealing packer.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3A and 3B are views for explaining a drilling hole-sealing packer according to an embodiment of the present invention, wherein FIG. 3A is a perspective view showing a drilling airtight sealing packer in a contracted state, FIG. 3B is a perspective view showing an expanded state Fig. 2 is a perspective view showing a digging airtight packing packer in the first embodiment.

3A and 3B, a drill hole-sealing packer 1 according to an embodiment of the present invention includes a packer main body 11 installed at an inlet of a drill hole a in which an underground anchor 2 is inserted, And a fluid injecting member 12 connected to the packer main body for injecting and discharging the fluid to and from the packer main body 11. [

The packer main body 11 is integrally formed with the anchor closing cover portion 111 to be in tight contact with the inner surface of the excavating hole a and is pressed against the inner surface of the underground anchor 2, And a fluid inlet chamber 113 of a sealed structure formed between the anchor close cover portion 111 and the excavation hole close cover portion 112. [

The packer main body 11 is formed with a hollow portion 114 through which an underground anchor 2 is inserted and positioned at the center of the anchor close cover portion 111 so as to have a generally cylindrical shape.

FIG. 4 is a perspective view showing a state before being assembled, and FIG. 5 is an enlarged view of part A of FIG. 3A.

4, the anchor close cover part 111 and the excavation hole close cover part 112 are fixed to one side of an in-plane side member spaced inward and outward so as to form a space for forming a fluid inflow chamber 113 at the center And the opening portion is airtightly sealed with each other. At this time, as shown in Fig. 3A, the sealing of the opening portion may be performed by stitching several times with the needles, but it can be performed by mixing fixing methods such as high frequency welding.

The anchor close cover portion 111 and the excavation hole close cover portion 112 can be selected and applied without limitation to any material that can withstand the injection pressure without flowing out the received fluid. However, in the present embodiment, And is formed of a fabric having a coating layer formed thereon.

The fluid injecting member 12 is a member connected to the packer main body 11 for injecting and discharging the fluid into the fluid inlet chamber 113 as shown in FIG. 5, and can easily inject a fluid such as air or water However, in the present embodiment, the injection pipe 121, the adhesive plate 122, and the fixing piece 123 are formed of a synthetic resin member integrally molded and molded And is hermetically coupled to the packer body 11.

The injection pipe 121 is formed in a pipe shape so that one side of the injection pipe 121 is exposed to the outside of the packer body 11 and the other side thereof is located inside the fluid injection chamber 113. The injection pipe 121 is provided with a connection portion 124 for easy connection with a fluid supply line (not shown) to the protruding portion 121a protruding outward.

The connection portion 124 may be formed by a threaded portion composed of a plurality of threads, but in the present embodiment, a connection port (not shown) which is connected to an end of a fluid supply line (a supply line connected to supply fluid to the fluid inlet chamber) And a plurality of connection protrusions having a saw-tooth cross-sectional structure protruding from the connection protrusions so as to be easily connected to the connection protrusions. The exposed portion 121a of the injection pipe 121 is provided with a sealing stopper 125 capable of sealing the flow hole.

The fastening plate 122 is formed integrally with the injection pipe 121 and is in close contact with the inner surface of the packer main body 11. The fastening piece 123 protrudes from the front surface of the fastening plate 122 And is press-fitted on the outer surface of the packer main body 11 in a state of being press-fitted into the fluid inlet chamber 113 so as to be exposed to the outer surface of the packer main body 11. At this time, the press-fit protrusions are formed in the form of a plurality of square wedges protruding in the lateral and longitudinal directions on the front surface of the contact plate 122.

6A and 6B are views for explaining a drilling hole sealing structure having a drill hole sealing packer according to an embodiment of the present invention. FIG. 6A is a view showing a state applied to a ground reinforcement of a cut slope to which a single underground anchor is applied And FIG. 6B is a sectional view showing a main part applied to a ground reinforcement of a cut slope surface to which a plurality of ground anchors are applied.

6A and 6B, the excavation hole-sealing structure having the excavator air-tight packing packer according to the present invention is inserted into the excavation hole a formed in the ground and is inserted outside the underground anchor 2, The excavator airtight packing packer 1 is provided with an excavator airtight sealing packer 1 installed at an inlet portion thereof. The excavator airtight sealing packer 1 is provided with a packer body 11 and a fluid inflow member 12 as shown in FIG. 3A And an airtight holding member 3 inserted into the underground anchor 2 to maintain airtightness.

As shown in FIG. 6A, the underground anchor 2 is formed by a plurality of strands stranded together and formed into a single linear member. However, the underground anchor 2 is not limited thereto and an underground anchor 2 composed of various members such as reinforcing bars can be applied .

As shown in FIG. 6A, the excavation-hole-sealing structure having the excavator air-tight packing packer according to the present invention will be described on the basis of an example applied to the ground reinforcement structure for ground reinforcement of the cut slope surface (b) And can be applied to various ground reinforcement structures such as a tunnel reinforcement structure on the wall of a tunnel.

The airtightness maintaining member 3 is contracted to the outer surface of the underground anchor by the expansion force of the anchor close cover portion 111 when the excavator airtight packing pack 1 is inflated and the anchor close cover portion 111 and the underground anchor 2 are contracted, And functions to keep the airtightness between the outer surface and the outer surface.

The airtightness maintaining member 3 has a structure in which the insertion hole 32 is penetrated so that the underground anchor 2 is inserted and the airtightness between the anchor close cover portion 111 and the underground anchor 2 can be maintained, But there is no limitation on the material of the body 31. In this embodiment, the insertion hole 32 is formed in the center of the body 31 formed into a rectangular columnar shape by the foamed foam,

The construction process of the excavation hole sealing structure with the excavator airtight packing packer according to the present invention will be described in detail. First, a construction machine such as an excavator is used to set an angle determined by the site condition, construction drawing, The cut surface is cut to form a cut slope surface (b), the cut position is marked on the cut slope surface (b), the drilling angle and the drilling depth are determined and then the drilling hole (a) is drilled by a drilling machine

After the drilling of the drilling hole a is completed, the underground anchor 2 is inserted into the drilling hole, the grouting hose c is connected to the underground anchor 2, and then the underground anchor 2 and the grouting injection hose c), the hermetic sealing member 3 is inserted.

Thereafter, the excavator airtight packing packer 1 is inserted into the entrance of the excavation hole a, and is positioned around the position where the airtightness maintaining member 3 is inserted. Such an operation for inserting the excavation hole-sealing packer 1 is advantageous in that it can be carried out quickly because there is no need to tie both sides of the packer main body with a separate binding member as in the prior art.

A compressed air supply line (not shown) of a compressor (not shown) is connected to the fluid injecting member 12 or a water supply line (not shown) connected to the water pump is connected And supplies the fluid into the fluid inlet chamber 113.

When the fluid is inserted into the fluid inlet chamber 113 of the excavator airtight container 1, the excavated airtight cover portion 112 and the anchor close cover portion 111 are inflated up and down by the fluid injection pressure . Since the excavated hole-closing cover part 112 is expanded to some extent and then it is not expanded when it is in close contact with the inner surface of the excavation hole a, only the anchor-closing cover part 111 expands inward and the outer surface of the underground anchor 2 .

When the anchor close cover portion 111 is expanded, the airtightness maintaining member 3 is contracted toward the outer surface of the underground anchor 2, and the gap between the air tight cover member 111 and the anchor close cover portion 111 is completely sealed. In particular, as shown in FIG. 6B, when a plurality of ground anchors 2 are inserted into the excavation hole (a), the gap between adjacent underground anchors can be completely sealed, thereby completely preventing the outflow of the grouting material The stability of construction and the quality of construction can be improved.

When the expansion of the excavation hole-sealing packer 1 is completed, the projecting portion 121a of the fluid injection member 12 is sealed in such a manner that the sealing stopper 125 is engaged and the grouting injection hose c is provided with a grouting supply hose The grouting material is pressurized and fed. At this time, since the drilling hole packing packer 1 is firmly fixed to the entrance of the drilling hole a, even if the grouting material is supplied at a high pressure, It is injected deep inside the excavation hole and filled.

When the grouting material injected into the excavation hole (a) is cured to some extent or cured, the sealing plug 125 is separated to discharge and remove the fluid contained in the excavation hole sealing packing 1.

When the fluid contained in the excavator airtight packing packer 1 is removed, the packer body 11 is contracted and freed, so that it can be quickly taken out from the excavation hole a and can be separated and removed. The excavated airtight packing packer 1 thus removed can be reused repeatedly by inserting it into the excavation hole a for re-operation.

On the other hand, when the installation of the underground anchor 2 is completed as described above, a foundation forming step for providing a foundation (not shown) for supporting a block or a precast panel (not shown) After the panel laminating step in which a block or precast panel is installed on the base portion thus formed, the exposed portion 2a of the underground anchor 2 is connected and fixed in a tense state, and then the back surface of the block or precast panel, When filling the filler (f) between the slopes (b), the construction of the retaining wall is completed.

FIGS. 7A and 7B are views for explaining a first modification of the excavator air-tight packing packer according to the embodiment of the present invention, wherein FIG. 7A is a sectional view showing a sectional structure in an expanded state, FIG. Sectional view showing a state in which the air-tight sealing packer is installed.

7A and 7B, a drill hole-sealing packer 1 according to a first modification of the present invention includes an anchor close cover portion 111, a drill-hole close cover portion 112, and a fluid inlet chamber 113 And a fluid injecting member 12 connected to the packer main body for injecting and discharging the fluid to and from the packer main body 11. The fluid injecting member 12 is provided on the outer surface of the anchor close cover portion 111, And an urging member 4 attached to the outer surface of the underground anchor.

The pressing member 4 is flexible so as to be hermetically attached to the outer surface of the underground anchor 2 and is made of a material having a high coefficient of friction so as to be firmly seated on the outer surface of the underground anchor 2 . For example, as shown in Fig. 7A, the pressing member 4 is formed of a band-like band of felt material, and a plurality of the pressing members 4 are fixed and fixed on the surface of the anchor close cover portion 111 at regular intervals.

The excavator airtight packing packer 1 according to the first modified example of the present invention is configured such that when the excavator airtight packing packer is inflated as shown in Fig. 7B, the pressing member 4 is moved to the expansion pressure of the anchor closing cover portion 111 Tightly while pressing the outer surface of the underground anchor (2). Accordingly, even if the grouting material is pressed at a high pressure, the supporting force is provided by the frictional force of the pressing member 4, so that the drilling hole packing packer 1 is more firmly fixed to the underground anchor 2, .

8A and 8B are views for explaining a second modified example of the excavator airtight packing packer according to the embodiment of the present invention, wherein FIG. 8A is a sectional view showing the excavator airtight sealing packer in an expanded state, 8B is a cross-sectional view showing the construction of the excavation airtight sealing packer.

8A and 8B, the excavator air-tight packing packer 1 according to the second modification of the present invention includes an anchor close cover portion 111, a digging air-tight cover portion 112, and a fluid inlet chamber 113 And a fluid injecting member 12 connected to the packer main body for injecting and discharging a fluid into and from the packer main body 11. The outer surface of the outer surface of the excavator- And fixed to the inner surface of the excavation hole a by press fitting.

Although the fixing member 5 can be selected and applied without limitation to the shape or structure as long as it is capable of digging and fixing the inner surface of the excavating hole a when the packer main body 11 is inflated, As shown in the figure, a plurality of wedges 52 protrude from the surface of the band-shaped member 51 installed on the excavation hole-contact cover portion 112.

The excavator airtight packing packer 1 according to the second modification of the present invention is configured such that when the excavator airtight packing packer is inflated as shown in FIG. The wedge 52 of the excavation hole 52 digs the inner surface of the excavation hole a and fixes the excavation hole sealing packing 1 more firmly even if the grouting material is pressurized by a high pressure.

The present invention is not limited to the above-described embodiment, but may be applied to other types of structures, such as the following claims, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

1: Excavator packing sealer 11: Packer body
111: anchor close cover 112: excavation hole close cover part
113: fluid inlet chamber 114: hollow chamber
12: fluid injection member 121: injection pipe
122: tight contact plate 123:
124: connection part 3: air tightness member
31: body 32:
4: pressing member 5: fixing member
51: band member 52: wedge
a: Excavation ball

Claims (5)

A digging hole-sealing packer provided at an entrance of an excavation hole into which an underground anchor is inserted,
Wherein the excavator airtight packing packer includes an anchor close cover portion which is pressed against the outer surface of the underground anchor, a drill hole close cover portion which is integrally formed with the anchor close cover portion and is tightly pressed against the inner surface of the excavation hole, A fluid inflow chamber formed between the close cover portion and the excavator-airtight cover portion, and a hollow portion penetrating the center of the anchor close cover portion so as to be inserted into the underground anchor; And
And a fluid injecting member connected to the packer body for injecting and discharging a fluid into the fluid inlet chamber,
Wherein the fluid injection member is formed in a pipe shape so that one side of the fluid injection member is exposed to the outside of the packer main body and the other side of the fluid injection member is located inside the fluid injection chamber, And a fixing piece protruding from the front surface of the tightening plate and exposed to the outer surface of the packer main body and fixed by pressing,
Wherein the anchor close cover part and the excavation hole close cover part are composed of a bag-shaped fabric having one side of an inner side and an outer side spaced apart from each other so as to form a hollow part at the center thereof and an opening part formed on the other side, Wherein the anchor close cover portion and the other end portion of the excavation-hole-contact cover portion are airtightly sealed to each other so as to be hermetically sealed.
delete The method according to claim 1,
An urging member which is formed on an outer surface of the anchor close cover portion and is in close contact with an outer surface of the underground anchor when the packer main body is inflated; And
Further comprising: a fixing member coupled to an outer surface of the drill-hole-contact cover portion and press-fitted into an inner surface of the drill hole when the packer main body is inflated.
An excavation hole sealing structure having an excavation hole-sealing packing structure which is inserted into an outer periphery of an underground anchor to be inserted into a digging hole formed in the ground and installed at an entrance of the excavation hole,
An excavator according to any one of claims 1 to 3, And
And an airtight holding member for sealing a gap between the anchor close cover portion and the ground anchor when the insertion hole penetrates to insert the underground anchor and is contracted at the time of expansion of the anchor close cover portion. Excavation hole sealing structure with packer.
5. The method of claim 4,
Wherein the airtightness maintaining member is formed at a center of a body formed in a rectangular pillar shape by a foam foam, and the fitting hole is perforated along the longitudinal direction.

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