KR101422094B1 - a soil nailing device using packer - Google Patents

Abstract

The present invention relates to a pressurizing type soil nailing device using a non-shrinkage double-layer packer and a construction method thereof. According to the present invention, a soil nailing device for stabilizing a slope comprises a nail (100) which is inserted into a perforated hole on the slope ground; a packer (200) which is combined with the nail, inserted into an inner wall on the inlet side of the perforated hole, and expands outward when being filled with non-shrinkage chemical to be pressurized and supported by the inner wall; a filler injecting pipe (300) which passes through the packer to be arranged in the perforated hole and guides an outer side grout filler; an air discharging pipe (400) which passes through the packer to be arranged in the perforated hole, and discharges internal air to the outside; and a nail fixing plate (500) which has a through hole through which the nail passes, has one side attached around the inlet of the perforated hole to elastically change the shape in case of nut locking and fix the nail. The soil nailing device of the present invention maintains the stably fixed state of the packer on the inlet side of the perforated hole after the nail is installed in the perforated hole formed on the slope ground and before a filler is injected into the perforated hole, and then the filler is injected into the perforated hole. Therefore, since the packer stably supports the inlet of the perforated hole and then the filler is inserted into the perforated hole, the filling is stably performed and the inlet of the perforated hole is prevented from being damaged by filling pressure.

Description

Technical Field [0001] The present invention relates to a pressurized soil nailing apparatus and a method of constructing a two-

The present invention relates to a soot nailing apparatus, and more particularly, to a soot nailing apparatus in which a nail inserted into a perforation hole of a slope paper is coupled to a non-shrinkable packer so as to be fixed to an inlet of the perforation hole, The present invention relates to a pressurized soil nailing apparatus and a construction method using a non-shrinkage two-stage packer for allowing a hole to be filled with a grouting agent so as to enable stable fixing of the nail.

In general, Soil Nailing refers to a method that is most widely applied to the installation of slope walls or stabilization of slopes, and is a method of improving the stability of artificial slopes by natural slopes or excavation.

This makes it possible to stabilize the slope by increasing the overall shear resistance and the action resistance of the ground during installation, and to provide a reinforcing material capable of resisting tensile stress, shear stress and bending moment, that is, nails arranged at relatively close intervals in the ground of the slope At the same time, it is a method to suppress the displacement of the ground.

BACKGROUND ART Conventionally known soil nailing methods are widely known as non-pressing (gravity type) and pressure type.

The non-pressurized soil nailing method is a gravity grouting method. Since the ground reinforcement effect is not clear, there is a concern that structural defects may be induced in the ground reinforcement. In addition, in order to compensate for the infiltration and shrinkage of the filling material , It is necessary to repeatedly perform the grouting operation a plurality of times, so that the ground reinforcement is troublesome and the process is prolonged, thereby deteriorating the workability.

In the pressurized soil nailing method, a separate packing member is provided for the purpose of applying pressure grouting to the inlet of the perforation hole, and the grouting material is filled in the perforation hole by a predetermined pressure through the packing member There is a problem that the periphery of the perforation hole is damaged when an excessive pressure is applied to the packing member. In order to solve this problem, a separate fixing plate is connected to the periphery of the perforation hole entrance, and then the work is performed.

For example, the pressurized soil nailing method is disclosed in Patent Registration No. 10-1175521.

This is a pressurized soil nailing method for a soil wall or a slope stabilization construction using a pressurized soil nailing apparatus, comprising the steps of: drilling a ground to form a perforation hole; Inserting a hollow soil nail formed in a packer member, installing a fastening member on a nail to be sacked, inserting the soil nail into a perforation hole after passing the grouting hose and the air discharge hose through the packer member; Sealing the inlet of the perforation hole by grouting filler material on top of the packer member; Injecting a filling material into the perforation hole through the grouting hose and performing pressurized grouting so that pressure is applied by the filling material; And stopping the supply of the filling material through the grouting hose when the filling material supplied to the inside of the hole is overflowed through the air discharge hose.

However, in the above-mentioned method, when the grout is filled in the perforation hole because the packer member installed at the perforation hole entrance can not be stably fixed to the inner wall of the perforation hole, there is a problem that the grouting is released, There is a problem that the work time is relatively delayed.

Patent Registration No. 10-1175521 Pressurized Soil Nailing Device and Method Notification Date Aug. 21, 2012 Patent Registration No. 10-0697333 Pressure Nailing Packer for Stability of Roads and Complexes Notification Notification Date March 21, 2007

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

SUMMARY OF THE INVENTION [0006]

first; When the nail is installed in the perforated hole of the slope, the packer installed in the perforated hole together with the nail secures a stable fixing force through the inflating force at the inlet of the perforated hole at the inlet of the perforated hole. At the same time, .

second; The caulking member is further coupled to the back of the packer filled with the grout filler so that the nail is stably fixed to the perforated hole by the two-step fixing force and the peripheries are prevented from being damaged.

In order to achieve the above object, the present invention provides a pressurized soil nailing apparatus for slope stabilization, comprising: a nail inserted into a perforation hole of a slope; a nail inserted into an inner wall of an inlet side of the perforation hole in a state of being coupled to the nail, A filler injection tube which is located on the inner side of the perforation hole and guides the outer side grout filler; a filler injection pipe which is located inside the perforation hole and passes through the inner hole, And a nail fixing plate for fixing the nail while being elastically deformed when the nut is locked when one side of the nail is in close contact with the periphery of the opening of the perforation hole.

Wherein the packer comprises first and second packing members made of an elastic material and having a pair of front and rear parts, an inflated sheet made of a material capable of permeating moisture and enclosing the first and second packing members, And an air discharge pipe connected to the first packing member and discharging the inner air. The non-shrinkage liquid injecting pipe is connected to the first packing member to inject the non-shrinkage liquid into the space between the first and second packing members.

The first and second packing members refer to a rubber material having an elastic force and can be maintained in a fixed state without being separated from the perforation hole through an elastic deformation force when engaged with the inner wall of the perforation hole.

The present invention is characterized in that a packing agent is injected into a perforation hole in a state in which a packer is nipped in a perforation hole formed in a slope paper and then the packer is kept in a fixed state on the inlet side of the perforation hole, The filler is injected into the perforation hole and the perforation hole is prevented from being damaged due to a stable filling and filling pressure.

In addition, the non-shrinkage liquid injected into the interior of the packer is not inflated and hardened in a state in which the inflated sheet constituting the packer is pressed against the inner wall of the perforation hole to maintain a stable fixed state.

Further, the caulking member is further coupled to the perforation hole in the back of the packer, thereby preventing damage to the peripheries of the perforation hole and fixing the nail stably.

FIG. 1 is an exploded view showing a state where a pressurized soil nailing apparatus using a non-shrinkable two-stage packer according to the present invention is installed,
FIG. 2 is a sectional view showing a pressurized soil nailing apparatus using a non-shrinkable two-stage packer in FIG.
FIG. 3 is an enlarged sectional view of the non-shrinkable packing in FIG. 2,
Fig. 4 is a principal perspective view of Fig. 3,
5 is a sectional view taken along the line "EE" in Fig. 4,
Fig. 6 is an enlarged view showing the gap holding member in Fig. 2; Fig.

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

The present invention relates to a nail 100 which is inserted into a perforation hole H of a slope according to the view of Figures 1 to 6 and a nail 100 which is located at the entrance of the perforation hole H and fixes the nail 100, A filler injection pipe 300 for injecting the grout filler into the perforation hole H and air generated during the injection of the grout filler through the filler injection pipe 300 to the outside An air discharge pipe 400 for discharging the nail 100, and a nail fixing plate 500 for keeping the nail 100 in a stable and fixed state on the oblique surface.

A caulking member 800 is further coupled between the perforation hole and the packer coupled to the perforation hole.

The nail 100 is applied to the known art and is inserted along the center line into the perforation hole H formed in the slope paper.

The packer 200 is located inside the inlet of the perforation hole H and is maintained in a fixed state through an expansion force. The nail 100 is fixed to the center of the packer 200.

The packer 200 includes first and second packing members 210 and 220 formed of an elastic material and having a pair of front and rear parts, a material capable of permeating water, and the first and second packing members The first packing member 210 and the second packing member 210 are connected to each other so that a non-shrinkage solution is injected into the space between the first and second packing members 210 and 220. [ A non-shrinkage liquid injection pipe 212, and an air discharge pipe 214 coupled to the first packing member 210 to discharge the internal air.

The first and second packing members 210 and 220 refer to a rubber material having an elastic force and generate an elastic force when fixed to the inner wall of the perforation hole H and are fixed.

That is, in a state of being fitted in the perforation hole H, it is maintained in a fixed state without being separated through an elastic deformation force.

The inflatable sheet 230 refers to a material such as a nonwoven fabric and is configured to simultaneously enclose first and second packing members 210 and 220 having both ends positioned on both sides, 230 may be fixed while the first and second packing members 210, 220 are wound in a wound state.

The expansion sheet 230 is locked to the first and second packing members 210 and 220 through a locking means 232, respectively.

The locking means 232 can be locked by a banding of the metal strip or by a string or the like.

Grout guide holes and air guide holes are formed in the first and second packing members 210 and 220 so that the filler injection pipe 300 and the air discharge pipe 400 are sequentially passed through.

The non-shrinkable fluid is preferably a shrink-proof grout, which is kept in a stable state when the inflated sheet 230 is in close contact with the inner wall of the perforation hole H as the inflated sheet 230 is cured in an inflated state .

The filler injection tube 300 passes through the packer 200 and is positioned inside the perforation hole H to guide the outer side grout filler.

The first and second packing members 210 and 220 sequentially pass through the guide holes formed in the first and second packing members 210 and 220 and are fixed through the self- . Preferably, the sealing treatment is performed to prevent the nail 100 from escaping. The filler may be a known grout.

It is preferable that one end of the filler injection tube 300 is located at the end of the inner wall of the perforation hole H. When the grout is injected into the perforation hole H, So that it is filled in a filled form.

The air discharge pipe 400 passes through the packer 200 and is positioned inside the perforation hole H to discharge the internal air to the outside.

The first and second packing members 210 and 220 sequentially pass through the guide holes formed in the first and second packing members 210 and 220 and are fixed through the self- . Preferably, the nail 100 is sealed so as to prevent the release of the nail 100, and one end thereof is located close to the packer 200.

This is to rapidly discharge the air filled in the perforation hole H when the grout filler is filled in the perforation hole H and is moved toward the packer 200.

The outer diameter of the first packing member 210 is preferably larger than the outer diameter of the second packing member 220 so that the second packing member 220 can be easily moved inside the perforation hole H. May be smaller than the inner diameter of the perforation hole (H). This is because the inflated sheet 230 is supported on the inner wall of the perforation hole H when the inflated sheet 230 expands due to the infusion of the non-shrinkage solution.

The nail fixing plate 500 has a through hole through which the nail 100 is passed and one surface of the nail fixing plate 500 is closely attached to the periphery of the inlet of the perforation hole H to elastically deform the nail 100 when the nut 520 is locked, A nail guide hole 510 is formed at the center and an adhered surface 530 is formed so as to closely contact the periphery of the entrance of the perforation hole H along the outer rim and an outwardly convex protruding portion 540 So that an elastic force is generated when the nuts 520 are pressed against each other to maintain a stable state of the contact surface 530 around the perforation hole H.

Meanwhile, the nail 100 inserted in the perforation hole H may be provided with a spacing member 600 so that the nail 100 may be positioned at the center of the perforation hole H.

The gap holding member 600 is formed with a locking step 610 on both sides thereof so that the nail 100 can be guided while passing along the axial direction and a pressing force And a convex center portion 620 is formed to be supported on the inner wall of the perforation hole H.

The caulking member 800 is coupled to an inlet of the perforation hole H to support the packer 200, and a synthetic resin material is applied.

The installation and construction of the pressurized soil nailing apparatus using the non-shrinkable packer according to the present invention constructed as described above will be described with reference to the accompanying drawings.

During installation,

First, the packer 200 and the gap holding member 600 are coupled to the nail 100. Then, the nail 100 is inserted into the perforation hole H. Then, the leading end of the nail 100 is positioned at the center line of the perforation hole H by the gap holding member 600. The packer 200 may be fixed to the perforation hole H in a state in which the packer 200 is installed in the nail 100 in advance or in a separated state.

4, the packing member 210 and 220 are wrapped with the inflating sheet 230, and then the packer 200 is fixed with a band of the locking means 232 to thereby hold the packer 200 After assembling, the packer 200 is inserted into the opening of the perforation hole H. Then, the nail 100 is inserted to the end of the perforation hole H while passing through the guide hole formed at the center of the packer 200. Thereafter, the filler injection tube 300, the air discharge tube 400, the non-shrinkage solution injection tube 212, and the air discharge tube 214 are inserted, and then the unshrinkable chemical solution injection The non-contraction drug solution is injected into the tube 212. At this time, the inflated sheet 230 is tightly supported and supported by the inner wall of the perforation hole H through the inflating force, so that the inflated sheet 230 is maintained in a fixed state do. At the same time, the internal air is discharged to the outside through the air discharge pipe 214 coupled to the first packing member 210.

Thereafter, when the non-shrinkage solution is completely cured, the grout filler is supplied into the perforation hole H through the filler injection tube 300. Then, the grout filler is filled from the inner wall of the perforation hole (H) to move toward the outlet side, and the generated air is discharged to the outside through the air discharge pipe (400).

The grout filler is continuously filled in the perforation hole H, and when the curing is completed, the fixing of the nail 100 is completed.

Then, when the nail fixing plate 500 is coupled to the nail 100, the installation of the nailing device is completed.

That is, the present invention provides a method of soil nailing for slope stability,
Forming a perforation hole (H) on a slope; coupling a plurality of spacing members (600) to one end of the nail (100); coupling the packer (200) to the other end of the nail The filler injection tube 300 and the air discharge tube 400 are connected to communicate with each other through the first and second packing members 210 and 220 constituting the packer 200, The end of the air discharge pipe 400 is connected to the second packing member 220 by being extended so that the nail 100 is positioned at the end of the perforation hole H when the nail 100 is coupled to the perforation hole H, Shrinking liquid injection tube 212 is positioned adjacent to the second packing member 220 by passing through the first packing member 210; 1 through the packing member 210 and placing the nail 100 in the perforation hole H, Maintaining a plurality of spacing members (600) to support the inner wall of the perforation hole (H) and to ensure that the nail (100) is positioned at the center of the perforation hole (H) Shrinking liquid injecting tube 212 connected to the packer 200 to fill the non-shrinking liquid solution so that the packer 200 is inserted into the non-shrinking liquid injecting tube 212, The method comprising the steps of: maintaining a fixed state on the inner wall of the perforation hole (H) after being expanded and adhering; injecting a filler through a filler injection tube (300) passing through the packer (200) And a nail fixing plate 500 coupled to a rear end of the nail 100 so that the nail fixing plate 500 is coupled to the inner surface of the hole H, And the step of supporting the caulking member 800 may be performed.

It is to be understood that the present invention is not limited to the above-described embodiment, but may be modified in various ways as set forth in the appended claims, It will be understood by those skilled 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 by the appended claims.

H: Perforation hole
100: Nail
200: Packer
210, 220: first and second packing members 230:
212: non-shrinkage liquid injection pipe 214: air discharge pipe
300: filler injection tube
400: air discharge pipe
500: Nail plate
510: Nail guide hole 520: Nut
530: close contact surface 540:
600:
610: stuck end 620: convex center
800: caulking member

Claims (7)

In a soil nailing apparatus for slope stability,
A nail 100 to be inserted into a perforation hole H of a slope;
The first and second packing members 210 and 220 are made of an elastic material and have a pair of front and rear parts. The first and second packing members 210 and 220 surround the first and second packing members 210 and 220, Shrinkable fluid is injected into the space between the inflating sheet 230 and the first and second packing members 210 and 220 to be connected to the first packing member 210 while passing through the first packing member 210, Shrinkable liquid injection tube 212 which is positioned in proximity to the first packing member 220 and is connected to the first packing member 210 to discharge the inner air generated by the injection of the non- And an air discharge tube 214 positioned close to the member 210. When a filling force is generated due to the injection of the non-shrinkage solution after being inserted into the inner wall of the inlet side of the hole H in a state of being coupled to the nail 100 While discharging the air through the air discharge pipe 214, It is expanded by the liquid to the outside packer 200 to be maintained and to secure the close contact with the perforated holes (H) inside wall;
A caulking member 800 coupled to an inlet of the perforation hole H to support the packer 200;
A filler injection pipe 300 passing through the packer 200 and the caulking member 800 to be positioned inside the perforation hole H and to guide the outer grout filler;
An air discharge pipe 400 passing through the packer 200 and the caulking member 800 and positioned inside the perforation hole H to discharge the internal air to the outside;
The nail 100 has a through hole through which the nail 100 is passed and one surface of the nail 100 is closely contacted with the periphery of the opening of the perforation hole H to be elastically deformed when the nut 520 is locked to prevent the detachment of the caulking member 800, A nail fixing plate 500 for fixing the nail fixing plate 500; And
And the nail 100 is guided while being guided along the axial direction, and when the compression force due to the engagement of the retaining end 610 is generated in the middle, the inner wall of the perforation hole H A hollow portion 620 is formed to support the nail 100 when the nail 100 is inserted into the nail 100 and the nail 100 is positioned at the center of the hole H, (600). ≪ / RTI >< RTI ID = 0.0 > 100. < / RTI >
delete The method according to claim 1,
Wherein the first and second packing members 210 and 220 are made of a rubber material having an elastic force.
2. The absorbent article of claim 1, wherein the inflation sheet (230)
Wherein the non-shrinkable two-stage packer is made of a nonwoven fabric material, and the first and second packing members (210) and (220) having both sides spaced apart from each other are wound in a wound state. Pressurized soil nailing device.
5. The apparatus of claim 4, wherein the locking means
Wherein the second bag is connected and fixed by banding of a strap or a metal band.
delete A method of soil nailing for slope stability,
Forming a perforation hole (H) in the slope;
A plurality of spacing members (600) at one end of the nail (100);
Coupling the packer (200) to the other end of the nail (100);
The filler injection tube 300 and the air discharge tube 400 are connected through the first and second packing members 210 and 220 constituting the packer 200 so that the ends of the filler injection tube 300 are connected The nail 100 may be extended to be positioned at the end of the perforation hole H when the nail 100 is coupled to the perforation hole H and the end of the air discharge pipe 400 may be positioned close to the second packing member 220 ;
Allowing the non-shrinkage liquid injection pipe (212) to pass through the first packing member (210) and be positioned close to the second packing member (220);
Allowing the air discharge tube (214) to pass through the first packing member (210) and be positioned in proximity thereto;
The nail 100 is inserted into the perforation hole H so that the plurality of spacing members 600 support the inner wall of the perforation hole H while the nail 100 is inserted into the perforation hole H, Is located at the center of the first chamber
Inserting the packer (200) from the inlet of the perforation hole (H) to a position of 300-500 mm;
Shrinkage solution injecting pipe 212 connected to the packer 200 to fill the non-shrinkage solution so that the packer 200 is expanded and adhered to the inner wall of the perforation hole H to maintain a fixed state;
Injecting a filler through a filler injection tube 300 passing through the packer 200;
Coupling the caulking member 800 to the nail 100 so that the outer diameter of the caulking member 800 is closely contacted with the inner wall of the hole H;
Wherein the nail fixing plate is coupled to a rear end of the nail so as to support the caulking member. 2. The method of claim 1, wherein the nail fixing plate is attached to a rear end of the nail.

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