KR100872145B1 - Removable earth anchor with double injection pipe for softground and construction method thereof - Google Patents

Abstract

The present invention relates to a soft ground-removable earth anchor body provided with a double injection pipe, more specifically, a plurality of injection holes are formed along the longitudinal direction on the outer circumferential surface of the packer injection pipe, the bottom of which is closed; A fixing injection pipe parallel to the packer injection pipe; A tension member parallel to the packer injection tube and surrounded by a covering material; A plurality of packers formed around the packer injection tube, the fixing injection tube, and the tension member so as to surround the injection hole of the packer injection tube, and spaced apart from each other at regular intervals; Bind both ends of the packer, the binding tube is filled with a filler inside; It is formed along the outer circumferential surface of the binding pipe, a plurality of protruding wings that can be folded toward the side of the binding pipe; And a load-bearing body coupled to one end of the tension member. Consisting of, the tension member located between the facing binding pipe is for a soft ground removable earth anchor body provided with a double injection pipe, characterized in that part is exposed to the ground.

When the present invention is used, it is possible to prevent the ground pollution caused by the earth anchor body to minimize the impact on the adjacent ground, and to easily remove the tension member of the earth anchor body without spilling the grouting material inside the packer.

In addition, by installing the packer and the protruding wing in the strand, the inner body, steel wire and packer integrated to ensure sufficient adhesion between the anchoring end and the ground, so that in the case of soft ground can be easily removed the tension member.

Earth anchor, removable, double injection pipe, underbody, soft ground

Description

REMOVABLE EARTH ANCHOR WITH DOUBLE INJECTION PIPE FOR SOFTGROUND AND CONSTRUCTION METHOD THEREOF}

The present invention relates to a soft ground-removable earth anchor body provided with a double injection pipe for grouting the ground, more specifically, a plurality of injection holes are formed along the longitudinal direction on the outer circumferential surface of the packer injection pipe; A fixing injection pipe parallel to the packer injection pipe; A tension member parallel to the packer injection tube and surrounded by a covering material; A plurality of packers formed around the packer injection tube, the fixing injection tube, and the tension member so as to surround the injection hole of the packer injection tube, and spaced apart from each other at regular intervals; Bind both ends of the packer, the binding tube is filled with a filler inside; It is formed along the outer circumferential surface of the binding pipe, a plurality of protruding wings that can be folded toward the side of the binding pipe; And a load-bearing body coupled to one end of the tension member. Consisting of, the tension member located between the facing binding pipe is for a soft ground removable earth anchor body provided with a double injection pipe, characterized in that part is exposed to the ground.

Earth anchor method is a method to excavate the back surface of earthen wall, etc. in a cylindrical shape and to support the surrounding ground by installing anchor body at the excavated part, and it is possible to reduce the amount of temporary material by not using the strut for strut. It is widely used due to the advantage of securing a working space.

This earth anchor method uses a casing and drilling rod to drill the ground by the length of the earth anchor body, and then inserts the anchor body into the drilling hole and performs the first injection grouting to fill the gap between the casing and the anchor body, and the casing. After drawing, the fixing unit is formed by injecting pressure from the bottom of the anchor body toward the inlet and hardening by grouting the grouted injection material, followed by prestressing the tension material (strand or steel bar, etc.) and tensioning the anchor head.

On the other hand, in the conventional construction method as described above, there was a fear that depression or ground loss around the perforated holes due to water or air for slime treatment may occur. Therefore, the applicant of the present invention has been filed and registered for the earth anchor body equipped with the double injection pipe of Figure 1 for the purpose of preventing such risks and to perform a tight grouting of the even distribution in the perforation hole (Patent No. 557010). ).

However, in the earth anchor body provided with the double injection pipe, the anchoring end portion formed in the ground is often settled in the adjacent road or the basement of the structure beyond the boundary of the target site, but once the construction is completed, the demolition is impossible. It can cause major obstacles to the construction work in the future anchor installation site. In particular, the load-bearing body and the injection pipe, etc. remaining in the ground do not have a big problem in excavation or drilling, but the stranded wire is likely to cause considerable problems in high-strength operation, so it should be removed in advance.

However, it is difficult to apply the removable earth anchor body because the anchoring portion of the existing removable earth anchor body is not sufficiently secured with the ground. In particular, in the case of soft ground, including a rock layer or a coastal buried layer, it is difficult for the tension member to exert sufficient tensile force, or the reinforcing bars yield before removal of the tension member.

In addition, in the case of the removable anchor body, it should be able to safely separate the strand wire without the flow of the grouting material in the packer in the process of removing the tension member.

The object of the present invention created to solve the above problems is as follows.

First, the present invention provides a soft ground removable earth anchor body provided with a double injection pipe that can prevent the ground pollution due to the earth anchor body remaining on the adjacent ground and remove the tension member without the outflow of the grouting material inside the packer.

Second, to reduce the depth of the drilled hole by increasing the coupling force between the earth anchor body and the ground and at the same time to provide a removable earth anchor type for the soft ground with a double injection pipe applicable to the soft ground.

The present invention to solve the above problems is formed a plurality of injection holes in the longitudinal direction on the outer peripheral surface, the lower end of the packer injection pipe; A fixing injection pipe parallel to the packer injection pipe; A tension member parallel to the packer injection tube and surrounded by a covering material; A plurality of packers formed around the packer injection tube, the fixing injection tube, and the tension member so as to surround the injection hole of the packer injection tube, and spaced apart from each other at regular intervals; Bind both ends of the packer, the binding tube is filled with a filler inside; It is formed along the outer circumferential surface of the binding pipe, a plurality of protruding wings that can be folded toward the side of the binding pipe; And a load-bearing body coupled to one end of the tension member. Consisting of, the tension member positioned between the facing binding pipe provides a soft ground removable earth anchor body provided with a double injection pipe, characterized in that part is exposed to the ground.

That is, by exposing a portion of the tension member to the ground, it is possible to prevent poor construction of the earth anchor body due to the disturbance of the perforation hole, and at the same time can perform a tight distribution of even distribution.

In addition, it is possible to draw the tension member without the outflow of the grouting material inside the packer by the binding tube that binds both ends of the packer.

In addition, the protruding blades located on the outer circumferential surface of the packer and the binding pipe increase the coupling force between the earth anchor body and the ground, and the removable earth anchor body can be used even in the soft ground.

Furthermore, when a plurality of load bearing bodies are located, a packer may be installed between neighboring load bearing bodies to increase the coupling force between the earth anchor body and the ground.

According to the present invention as described above is expected the following effects.

First, in the case of using a soft ground-removable earth anchor body equipped with a double injection pipe of the present invention to prevent ground pollution due to the earth anchor body to minimize the impact on the adjacent ground, and without losing the grouting material inside the packer The tension member of the anchor body can be easily removed.

Second, in the case of using the soft ground-removable earth anchor body provided with the double injection pipe of the present invention, while preventing the poor construction of the earth anchor body due to the disturbance of the drill hole, at the same time tight grouting of the even distribution in the drill hole Can be done.

Third, in the case of using a soft ground removable earth anchor body equipped with a double injection pipe of the present invention, the coupling force between the earth anchor body and the ground increases due to the integrated load body, packer, and protruding wings, thereby reducing the depth of the drilled hole. It is possible to apply removable earth anchor body in soft ground.

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

Figure 2 is an embodiment of a soft ground removable earth anchor body provided with a double injection pipe of the present invention.

As shown in Figure 2, the present invention is formed with a plurality of injection holes 110 in the longitudinal direction on the outer peripheral surface, the lower end of the packer injection pipe 100; A fixing injection tube 200 parallel to the packer injection tube 100; A tension member 300 parallel to the packer injection tube 100 and surrounded by a covering material; Surrounding the injection hole 110 of the packer injection tube 100 is surrounded by a packer injection tube 100, the fixing injection tube 200 and the tension member 300, a plurality of packers 400 are formed spaced at regular intervals ; Bind both ends of the packer 400, the binding pipe 500 is filled with a filler 510 inside; A plurality of protrusions 600 formed along the outer circumferential surface of the binding pipe 500 and foldable toward the side of the binding pipe 500; And a load carrier 700 coupled to one end of the tension member 300. Consisting of, the tension member 300 is located between the facing binding pipe 500 is characterized in that part is exposed to the ground.

Here, the packer injection pipe 100 is a pipe for filling the grouting material in the packer 400, and a plurality of injection holes 110 are formed along the length direction on the outer circumferential surface of the packer injection pipe 100, It is composed of a sealed structure. At this time, the packer injection pipe 100 may increase the number of injection holes 110 located in the packer 400 toward the lower end.

Next, the fixing injection pipe 200 serves to fill the grouting material in the drilling hole of the ground.

In other words, by using a double injection pipe consisting of the packer injection pipe 100 and the fixing injection pipe 200 can be pressurized injection to the packer 400, it can be injected again in the drilling hole and stable settlement with tight grouting Form wealth.

And the tension member 300 is surrounded by the coating material, it is preferable to fill the lubricating oil between the tension member 300 and the coating material to facilitate the pulling out of the tension material 300 afterwards. In particular, one end of the tension member 300 constituting the anchoring end of the ground is fixed to the lower body 700, and during the drawing operation to release the tension line in the anchor head 710 to dismantle the tension member 300. In this case, the load-bearing body 700 to which one end of the tension member 300 is fixed may be located in plural along the longitudinal direction of the tension member 300.

In addition, the packer 400 is surrounded by the packer injection tube 100, the fixing injection tube 200 and the tension member 300 to surround the injection hole 110 of the packer injection tube 100, the packer injection tube 100 A plurality are formed spaced apart at regular intervals along the longitudinal direction. Packer 400 serves to increase the coupling force between the earth anchor body and the ground, it is possible to apply the removable earth anchor body in the soft ground. Improved engagement of the earth anchor body with the ground contributes to reducing the length of the earth anchor body and the depth of the drilled hole.

As shown in the enlarged view of FIG. 2, when the side surface of the packer 400 is formed in an uneven shape projecting alternately toward the inside and the outside of the earth anchor body, the friction force between the earth anchor body and the ground is applied. It can be increased further.

In addition, in the present invention, while binding both ends of the packer 400, the binding pipe 500 is filled with the filler 510 is located at both ends of the packer 400. The binding pipe 500 prevents the grouting material inside the packer 400 from leaking to the outside, and facilitates the removal of the tension member 300 by relatively reducing the area of the tension member 300 exposed to the ground.

Particularly, in the present invention, a portion of the tension member 300 positioned between the binding pipes 500 facing each other is exposed to the ground, and this portion is the ground water remaining in the boring hole of the ground due to water boring during construction of the earth anchor body. Help the discharge of perforated water and facilitate the access to the ground of the earth anchor body.

On the other hand, the present invention, as shown in Figure 2, is formed in a plurality along the outer peripheral surface of the binding pipe 500, comprising a protruding wing 600 that can be folded toward the side of the binding pipe 500. do.

Here, the protruding wing 600 allows the earth anchor body remaining in the ground during the drawing of the tension member 300 to share more repulsive force. That is, when the casing is drawn out from the earth anchor body installed in the ground together with the casing, the protruding wings 600 which are folded are spread out to occupy a larger area than the size of the perforation hole, thereby sharing more repulsive force.

As an embodiment of such a protruding wing 600, as shown in Figure 2, to adjust the degree of folding by the spring 644, or as shown in Figure 4, one elastic horizontal member to be folded in the U-shape to weld to the binding pipe 500. Can be.

In addition, the protruding wing 600, as shown in Figure 3, is coupled to the side of the binding tube 500, the rotary hole 612 and the long hole 614 is formed at one end and the other end of the side, respectively Guide channels 610; A first support member 620 having one end hinged to the rotation hole 612 of the guide channel 610; A second support member 630 having one end hinged to be slidable inside the long hole 614 and the other end hinged to a predetermined position of the first support member 620; And a shaft pin 642 constituting a hinge coupling between the guide channel 610 and the first support member 620 to maintain the open state of the first support member 620 or the first support member 620. An elastic body 640 accommodated in the shaft pin 642 constituting the hinge coupling of the second support member 630 to maintain the open state of the first support member 620 and the second support member 630; It can be configured as. At this time, the elastic body 640 may be a torsion spring 644. In FIG. 3, the elastic body 640 has a shape surrounding the shaft pin 642 constituting the hinge coupling of the first support member 620 and the second support member 630.

 In addition, by forming a protruding ear in the shape of the end of the protruding wing 600 located on the opposite side of the lower body 700, it is possible to improve the repulsive force of the earth anchor body. And protruding wing 600 can be formed in plurality along the outer circumferential surface of the binding pipe 500, if formed in three places along the outer circumferential surface of the binding pipe 500, the load is properly distributed to ensure a stable coupling with the ground It is possible. And the protrusion blades 600 which are located at both ends of the packer 400 is assembled so that the one end and the protrusion blades 600 of the other end to cross each other.

In addition, although not shown in the drawings, the present invention may include a plurality of straight steel wires connecting the lower body 700 and the binding pipe 500 adjacent to the lower body 700.

The steel wire serves to assist the integration of the load-bearing body 700 and the binding pipe 500 when the tension member 300 enters or draws out, and forms a steel wire coupling ring in the binding pipe 500 or the binding pipe 500. Connect the steel wire by drilling a hole in the outer surface of the

Furthermore, the packer 400 facing each other with the tension member 300 exposed to the ground may be connected to the steel wire through a ring or a hole formed in the side of the packer 400. In the case where the steel anchor is included in the earth anchor body, since the earth anchor body is integrally formed from the front end to the rear end of the earth anchor body, the entire earth anchor body except the tension member 300 behaves integrally when the tension member 300 is removed. .

On the other hand, in the present invention, the filler 510 to be filled in the interior of the binding pipe 500 may be various various embodiments, in particular, it is possible to use a mixture of cement and epoxy.

When the epoxy is mixed, the inside of the binding pipe 500 may be tightly filled due to the flowability of the epoxy. And the earth anchor body of the form which filled the filler 510 in the binding pipe 500 is installed in a drilling hole, and an earth anchor body is constructed.

Next, Figure 3 is another embodiment of a soft ground removable earth anchor sieve equipped with a double injection pipe of the present invention.

The soft ground removable earth anchor body provided with the double injection pipe of Figure 3 is formed with a plurality of injection holes 110 along the longitudinal direction on the outer circumferential surface, the bottom packer injection pipe 100; A fixing injection tube 200 parallel to the packer injection tube 100; A tension member 300 parallel to the packer injection tube 100 and surrounded by a covering material; Surrounding the injection hole 110 of the packer injection tube 100 is surrounded by a packer injection tube 100, the fixing injection tube 200 and the tension member 300, a plurality of packers 400 are formed spaced at regular intervals ; A binding pipe 500 which simultaneously binds the end portions of the neighboring packers 400 facing each other, the inside of which is filled with a filler 510; A plurality of protrusions 600 formed along the outer circumferential surface of the binding pipe 500 and foldable toward the side of the binding pipe 500; And a load bearing body 700 coupled to one end of the tension member 300. It is made of, characterized in that the filler injection hole 502 is formed along the outer circumferential surface of the binding pipe 500 is provided with a plurality.

Here, the binding pipe 500 of FIG. 3 can simultaneously bind the ends of the neighboring packers 400, thereby improving construction efficiency and reducing costs.

At this time, the removal ground anchor body for the soft ground provided with a double injection pipe is placed in the tension member 300, the binding pipe 500 is inserted along the tension member 300 in a predetermined position, and then inside the binding pipe 500 Fill in the filler 510, it is possible to manufacture in order to wrap using a fabric or the like to form a packer 400.

The filler injection hole 502 may be formed on an outer circumferential surface of the binding tube 500 so that the filler 510 may be easily injected into the binding tube 500.

On the other hand, the present invention, as shown in Figure 3, the loading body 700 may be located in plurality in the longitudinal direction of the tension member 300, the packer 400 is included between the neighboring loading body 700 Can be configured.

In other words, the packer 400 is positioned between the undercarriage 700 constituting the fixing part of the removable anchor body, thereby increasing the engagement force between the earth anchor body and the ground by increasing the contact area between the earth anchor body and the ground.

In particular, the binding pipe 500 is preferably installed in close contact with the lower body 700.

Next, Figure 4 is an enlarged view showing an embodiment of a soft ground removable earth anchor body provided with a double injection pipe of the present invention.

In the present invention, the binding pipe 500 has a binding ring 520 surrounding both ends of the binding pipe 500, as shown in FIG. And a separable finish 522 surrounding the binding pipe 500 located between the neighboring binding rings 520. It can be configured as.

The binding ring 520 may be composed of various kinds of materials such as PVC and steel pipe, and may be manufactured in an open / close type that can be separated and combined by dividing one pipe shape into half.

In addition, the detachable finishing material 522 surrounds the outer portion of the binding pipe 500 positioned between the binding rings 520, and may use a porous material such as a nonwoven fabric or a mineral fiber.

As an embodiment of the binding pipe 500, the filler 510 is tightly injected into the packer injection pipe 100, the fixing injection pipe 200 and the tension member 300 exposed to both ends of the packer 400, and separated type After wrapping a part of the finishing material 522, the binding pipe 500 may be formed by filling the binding rings 520 at both ends of the removable finishing material 522.

Next, Figures 5 to 6 show an embodiment of the binding pipe 500 of the removable ground anchor body for soft ground provided with a double injection pipe of the present invention.

First, the binding pipe 500 illustrated in FIG. 5 is characterized in that a plurality of internal supports 530 facing the center of the binding pipe 500 are coupled to the inner surface of the binding pipe 500. In this case, in order to close both ends of the binding pipe 500, the packer injection pipe 100, the fixing injection pipe 200 and the horizontal plate 534 capable of penetrating the tension member 300 may be included.

The horizontal plate 534 also serves as a spacer for maintaining the gap between the packer injection pipe 100, the fixing injection pipe 200 and the tension member (300).

And the binding pipe 500 shown in Figure 6 is characterized in that the inner support 530 is provided with a plurality of protrusions formed radially protruding from the center of the binding pipe 500 therein.

At this time, the packer injection tube 100 or the fixing injection tube 200 or the tension member 300 is located between the neighboring protrusions, the protrusion portion packer injection tube 100, the fixing injection tube 200 and the tension member 300 It also serves as a spacer for maintaining the spacing of The binding pipe 500 may use a molded product manufactured using a steel pipe.

On the other hand, the present invention as shown in Figures 4 to 6, the binding pipe 500 has a plurality of protruding ribs 540 and / or annular groove 550 along the outer peripheral surface; It can be formed and configured.

Here, the protrusion rib 540 improves the coupling force between the ground and the earth anchor body, the annular groove 550 is the position of the wire 552 surrounding the outside when wrapping the outside of the binding pipe 500 with the wire 552 Fix it. The wire 552 has an effect of binding the filler 510 inside the binding pipe 500 to remove the tension member 300 while minimizing damage to the filler 510.

In addition, the present invention includes a method for constructing a soft ground-removable earth anchor body provided with a double injection pipe, the step-by-step process is as follows.

First, (a) punctures the ground and inserts the casing, and (b) inserts the removable earth anchor body for the soft ground having a double injection pipe inside the casing.

As an embodiment of the ground drilling, it is possible to drill the ground through water boring by the insertion length of the earth anchor body using a casing and a drilling rod having a diameter of 5 inches or more. In addition, the earth anchor body to be inserted corresponds to the removable earth anchor body for soft ground provided with a double injection pipe of the present invention, the water remaining in the ground when water boring the packer 400 and the packer 400 of the earth anchor body Since it is discharged to the space | interval in between, the entrance of an earth anchor body is easy.

Next, (c) the primary grouting is carried out to the fixing injection pipe 200 of the soft ground removable earth anchor body provided with the double injection pipe.

That is, grouting the grouting material in the fixing injection pipe 200 to fill the gap between the earth anchor body and the casing.

And (d) after removing the casing from the ground, the soft ground removable earth anchor body provided with the double injection pipe is falsely tensioned, and second grouting to the fixing injection pipe (200).

The false tension of the earth anchor body is a step for allowing the protruding wing 600 inserted into the ground to be unfolded and set in place in a folded state. And grouting is performed again in the anchoring injection pipe 200 to fill the gap between the earth anchor body and the casing due to the tensile tension.

Next, (e) the first grouting on the packer injection pipe 100 of the soft ground-removable earth anchor body provided with the double injection pipe, the third grouting to the fixing injection pipe 200, (f) the Secondary grouting is performed on the packer injection pipe 100 of the removable earth anchor body for soft ground provided with a double injection pipe.

The grouting material injected into the packer injection tube 100 is discharged into the packer 400 through a plurality of injection holes 110 formed on the outer circumferential surface of the packer injection tube 100, thereby gradually expanding the packer 400. Thus, a stable fixing ledger is formed. In particular, when increasing the number of the injection hole 110 toward the lower end of the packer injection tube 100, it is possible to grout evenly on both the top and bottom of the packer injection tube (100).

Due to the second and third grouting, the adhesive force between the drill hole and the packer is increased, and the packer can be inflated. And grouting material is input to the ground part corresponding to the front-end | tip part of an earth anchor body.

Finally, (g) after curing of the soft ground-removable earth anchor body provided with the double injection pipe, it is to be magnetic field.

The curing period of the step (g) is preferably 7 days or more, and after curing the grouting material in the perforation hole and the inside of the packer 400 through curing, by applying prestress to the tension member 300 to tension, and anchor the anchor head To be fixed.

As described above, since the grouting material is pressurized through various steps through the packer injection pipe 100 and the fixing injection pipe 200, a tight grouting is possible inside the earth anchor body and forms a stable fixing ledger. Furthermore, the predetermined bond strength is secured by increasing the coupling force between the earth anchor body and the ground.

Although the present invention has been described in connection with the preferred embodiment as mentioned above, various modifications and variations are possible without departing from the gist of the present invention, and can be used in various fields. Therefore, the claims of the present invention include modifications and variations that fall within the true scope of the invention.

Figure 1 is an embodiment in which the ground anchor body provided with a conventional double injection pipe is installed in the ground.

Figure 2 and Figure 3 is an embodiment of a removable ground anchor body for soft ground equipped with a double injection pipe of the present invention.

Figure 4 is an enlarged view of the removable earth anchor body for soft ground equipped with a double injection pipe of the present invention.

5 to 6 is an embodiment of the binding pipe constituting the removable earth anchor body for the soft ground provided with a double injection pipe of the present invention.

<Description of Major Symbols in Drawing>

100: packer injection pipe 110: injection hole

200: fixing injection pipe 300: tension member

400: Packer 500: Binding Tube

502: filling material injection hole 510: filling material

520: binding ring 522: separable finish

530: internal support

534: horizontal plate 540: protruding rib

550: annular groove 552: wire

600: protruding wing 610: guide channel

612: rotating hole 614: long hole

620: first support member 630: second support member

640: elastomer 642: shaft pin

644: spring

700: inner body 710: anchor head

delete

Claims (11)

A plurality of injection holes 110 are formed on the outer circumferential surface along the length direction, and the packer injection pipe 100 is closed at the bottom thereof; A fixing injection tube 200 parallel to the packer injection tube 100; A tension member 300 parallel to the packer injection tube 100 and surrounded by a covering material; Surrounding the injection hole 110 of the packer injection tube 100 is surrounded by a packer injection tube 100, the fixing injection tube 200 and the tension member 300, a plurality of packers 400 are formed spaced at regular intervals ; Bind both ends of the packer 400, the binding pipe 500 is filled with a filler 510 inside; A plurality of protrusions 600 formed along the outer circumferential surface of the binding pipe 500 and foldable toward the side of the binding pipe 500; And, A load bearing body 700 coupled to one end of the tension member 300; Consisting of, Tensile material 300 is located between the binding tube facing the 500 is a ground type removable earth anchor body provided with a double injection tube, characterized in that part is exposed to the ground. A plurality of injection holes 110 are formed on the outer circumferential surface along the length direction, and the packer injection pipe 100 is closed at the bottom thereof; A fixing injection tube 200 parallel to the packer injection tube 100; A tension member 300 parallel to the packer injection tube 100 and surrounded by a covering material; Surrounding the injection hole 110 of the packer injection tube 100 is surrounded by a packer injection tube 100, the fixing injection tube 200 and the tension member 300, a plurality of packers 400 are formed spaced at regular intervals ; A binding pipe 500 which simultaneously binds the end portions of the neighboring packers 400 facing each other, the inside of which is filled with a filler 510; A plurality of protrusions 600 formed along the outer circumferential surface of the binding pipe 500 and foldable toward the side of the binding pipe 500; And, A load bearing body 700 coupled to one end of the tension member 300; Consisting of, The soft ground removal type anchor anchor body provided with a double injection pipe, characterized in that a plurality of filler injection holes 502 are formed along the outer circumferential surface of the binding pipe 500. The method of claim 1 or 2, The protruding wing 600 is A guide channel 610 that is coupled to the side of the binding pipe 500 and has rotary holes 612 and long holes 614 formed at one end and the other end of the side; A first support member 620 having one end hinged to the rotation hole 612 of the guide channel 610; A second support member 630 having one end hinged to be slidable inside the long hole 614 and the other end hinged to a predetermined position of the first support member 620; And, It is accommodated in the shaft pin 642 constituting the hinge coupling of the guide channel 610 and the first support member 620 to maintain the open state of the first support member 620, or the first support member 620 and An elastic body 640 accommodated in the shaft pin 642 constituting the hinge coupling of the second support member 630 to maintain the open state of the first support member 620 and the second support member 630; Soft ground removal type anchor anchor body provided with a double injection pipe, characterized in that consisting of. The method of claim 1 or 2, The load-bearing body 700 is located in the plural in the longitudinal direction of the tension member 300, for the soft ground with a double injection pipe, characterized in that the packer 400 is included between the neighboring load-bearing body 700 Removable earth anchor body. In claim 1, The binding pipe 500 is A binding ring 520 surrounding both ends of the binding pipe 500; And, Detachable finish (522) surrounding the binding pipe (500) located between the adjacent binding ring (520); Soft ground removal type anchor anchor body provided with a double injection pipe, characterized in that consisting of. In claim 1, The binding pipe 500 is a soft ground removal type with a double injection pipe, characterized in that the plurality of inner support 530 toward the center of the binding pipe 500 is coupled to the inner surface of the binding pipe 500. Anchor body. In claim 1, The binding pipe 500 is a soft ground removal type earth with a double injection pipe, characterized in that the inner support 530 is provided with a plurality of protrusions formed radially protruding from the center of the binding pipe 500 therein. Anchor body. The method of claim 1 or 2, The binding pipe 500 includes a plurality of protruding ribs 540 and / or annular grooves 550 along an outer circumferential surface thereof; Soft ground removal type anchor anchor body provided with a double injection pipe, characterized in that it is formed. The method of claim 1 or 2, The filler 510 is a soft ground removable earth anchor body provided with a double injection pipe, characterized in that the mixture of cement and epoxy. The method of claim 1 or 2, Side of the packer 400 is a soft ground removal type anchor anchor body having a double injection pipe, characterized in that the concave-convex shape protruding alternately toward the inside and outside of the packer 400. (a) drilling the ground and inserting the casing; (b) inserting the soft earth-removable earth anchor body provided with the double injection pipe of claim 1 or 2 into the casing; (c) performing primary grouting on the fixation injection tube 200 of the soft ground-removable earth anchor body provided with the double injection tube; (d) after removing the casing from the ground, tensilely removing the soft earth-removable earth anchor body provided with the double injection pipe, and performing secondary grouting on the fixation injection pipe 200; (e) primary grouting on the packer injection pipe 100 of the soft ground-removable earth anchor body provided with the double injection pipe, and tertiary grouting on the fixation injection pipe 200; (F) secondary grouting to the packer injection pipe 100 of the soft ground removable earth anchor body provided with the double injection pipe; And, (g) after the curing of the soft ground-removable earth anchor body provided with the double injection pipe, the magnetic field; Construction method of the soft ground-removable earth anchor body provided with a double injection pipe comprising a.

Images