KR102430260B1 - grouting device for pressing multi-level areas by one-step having a injecting member of injection tube placed with dual cocentrically - Google Patents

Abstract

The present invention relates to a technology for reinforcing a tunnel ceiling in an excavated state by drilling the tunnel ceiling obliquely in tunnel excavation and injecting a grout material into the drilled hole, and preventing the grout material from flowing back inside an injection pipe member during spray. A grouting device is fitted in a double wedge type into a pressurizing hole formed on the injection pipe member to discharge the grout material from the injection pipe member into the drilled hole, thereby preventing the grout material discharged from the injection pipe member through the pressurizing hole into the inside of the packer member from flowing back inside the injection pipe member. According to the present invention, a backflow shutoff valve member includes a valve housing member with a peculiar structure and a discharge nozzle member, so the backflow shutoff valve member can operate smoothly and the spray of the grout material and the shutoff of backflow can be performed stably.

Description

{grouting device for pressing multi-level areas by one-step having a injecting member of injection tube placed with dual cocentrically}

The present invention reinforces the tunnel ceiling in the excavated state by drilling the ceiling part of the tunnel obliquely in the tunnel excavation work and then injecting the grout material into the drilled hole, and the grout material during the injection into the inside of the injection pipe member It relates to a technology to block backflow.

More specifically, the present invention is a packer from the injection tube member through the pressing hole as it is fitted in a double wedge shape with respect to the pressing hole formed in the injection tube member to discharge the grout material from the injection tube member to the inside of the perforation hole. It is a technology to block the backflow of the grout material discharged to the inside of the member again into the inside of the injection pipe member.

[FIG. 1] is a cross-sectional view of a tunnel excavation site before the grouting device is installed, and [FIG. 2] is a view showing a state in which the drilling hole is formed in [FIG. 1].

In the tunnel excavation construction, in order to prevent the collapse of the ceiling part, a plurality of drilling holes 10 are formed to be inclined upward in the direction of the excavation as in [Fig. After forming, a grouting device is inserted into the perforated hole 10 to inject and harden the grout material.

At this time, only by reinforcing the ground 20 corresponding to the upper portion of the 'ceiling expected line' on [Fig. 2], it is possible to prevent the ceiling portion from collapsing in the process of continuously excavating the tunnel.

And, in order to form the perforation hole 10 in the ground 20 above the 'planned ceiling line' due to the structural characteristics of the inside of the tunnel, it has to be formed obliquely as in [Fig. 2]. The predetermined length of the rear end of the hole 10 is inevitably located below the 'ceiling line'.

As a result, the ground corresponding to the lower side of the 'ceiling expected line' among the grouting device and the grout material inserted into the drilling hole 10 is inevitably removed during the continuous excavation of the tunnel.

[Fig. 2] is a cross-sectional view, and only one perforation hole 10 is displayed, but after forming several perforation holes 10 from the front to the rear on [Fig. 2], a grouting device is installed in each perforation hole 10 By inserting the grout material is injected.

Then, when the injected grout material is hardened, the rear end of the grouting device must also be removed in the process of excavating the part corresponding to the lower part of the 'ceiling expected line' in [Fig. 2]. (Example: about 6 hours per section) There is a problem that it takes too much time.

In addition, as in [Fig. 2], in an environment in which the perforated hole 10 is formed obliquely upward, a backflow frequently occurs in a portion where the grout material is sprayed on the inside of the perforated hole 10.

The present invention has been proposed in view of the above points, and an object of the present invention is to block the occurrence of backflow toward the injection tube member during the process of injecting the grout material from the injection tube member to the inside of the packer member inside the perforated hole formed at an angle. To provide a one-step multi-stage pressure grouting apparatus having a concentric dual injection tube injection member.

In order to achieve the above object, a one-step multi-stage pressure grouting device having a concentric dual injection tube injection member according to the present invention is formed to be long to be inserted into a drilling hole that is drilled obliquely in an upward direction, and is made in the form of a hollow pipe and has its own body an injection pipe member 110 having a plurality of pressurizing holes 111 and 111 ′ penetrating the inside and outside of the; The first region member 121 inserted into the inner side of the injection tube member and engaged with the inner wall of the injection tube member, and the first region member along the longitudinal direction of the injection tube member are spaced apart and connected to the inner wall of the injection tube member A third region member (hereinafter referred to as a 'compartment space') that connects the physical second region member 122 and the first and second region members to each other and forms a space (hereinafter referred to as a 'compartment space') communicating with the pressurizing hole and the injection pipe member ( 123) consisting of a pressing region partition member 120; It is inserted into the inside of the injection tube member through the pressing area partition member and is arranged in a dual type concentric circle to inject the grout material into the interior and the partition space of the injection tube member and extends to one end of the injection tube member corresponding to the outside of the perforation hole The injection tube injection member 130 is disposed; a packer member 160 disposed in a shape surrounding the injection pipe member to communicate with the pressing hole and expanded by the grout material ejected through the pressing hole; A plurality of rear end block members (221, 222) disposed in a shape surrounding the injection pipe injection member corresponding to the inlet side of the drilling hole (221, 222); A caulking bag member 230 disposed in the form of a bag along the outer surface of the plurality of rear end block members and closing the inlet portion of the perforation hole while expanding by the grout material injected from the outside; A caulking hose member for guiding the injection of grout material into the inner side of the caulking bag member as it communicates with the inside of the caulking bag member through one wall of the rear end block member located at the mouth side of the drilling hole among the plurality of rear end block members from the outside in the form of a hose (240); The backflow blocking valve member 300 is fitted into the pressure hole in a double wedge shape and blocks the grout material injected from the injection pipe injection member from being sprayed to the outside of the injection tube member through the pressure hole and then back into the pressure hole. can be

Here, the injection pipe injection member 130 includes an injection tube member 131 in the form of a hollow pipe that is inserted into the inside of the injection tube member through the pressure region partition member; An injection inner cylinder member 132 that is made in the form of a hollow pipe and is concentrically inserted into the inner side of the injection outer cylinder member so that the outer surface of the body is in contact with the inner wall of the injection outer cylinder member is rotatably in place; may be provided.

And, the injection outer cylinder member 131, the first outer cylinder injection hole (131a) formed to penetrate the inside and outside of its body at a position corresponding to the partition space to guide the injection of the grout material into the partition space; Formed through the inside and outside of the body in the longitudinal line of the body rotated at a predetermined rotation angle from the first outer cylinder injection hole in the circular cross section of the body so that the grout material can be sprayed in the injection pipe member deviating from the pressing area partition member A second outer cylinder injection hole (131b); may be provided.

In addition, the injection inner cylinder member 132 is formed to penetrate the inside and outside of its body at a position corresponding to the partition space, and in a state in communication with the first outer cylinder injection hole, a first inner cylinder for guiding the injection of the grout material into the partition space. the manipulator (132a); It is disposed on a straight line with the first inner cylinder injection hole in the longitudinal line of the body, and when the body rotates by a predetermined rotation angle while being inserted inside the injection outer cylinder member, the inner and outer parts of the body to communicate with the second outer cylinder injection hole A second inner cylinder injection hole (132b) formed through; may be provided.

On the other hand, the backflow blocking valve member 300 is a valve housing member 310 that is fitted into the pressing hole and has a hollow passage member 311 passing through the central portion of its body along the longitudinal direction of the pressing hole in the longitudinal direction of the pressing hole. ); The discharge nozzle member 320 is fitted to the hollow passage member and has a backflow blocking passage member 321 penetrating through the central portion of the valve housing member along the longitudinal direction of the valve housing member so that the grout material can move inside the body; can be provided

At this time, the discharge nozzle member 320 opens the backflow blocking passage member when the grout material injection pressure is generated from the injection pipe injection member and closes the backflow blocking passage member when the grout material injection pressure from the injection tube injection member is lowered. The body may be made of a synthetic resin material having tension.

On the other hand, the pressing holes (111, 111') may be configured in a tapered shape in which the inner diameter gradually decreases from the outside to the inside of the injection tube member.

In addition, the valve housing member 310 may be configured in a tapered shape in which the outer diameter of its body is gradually reduced toward the inside of the pressurizing hole in response to the inner diameter of the pressing hole.

In addition, the hollow passage member 311 may be configured in a tapered shape in which the inner diameter of its body gradually increases toward the inside of the pressing hole.

Here, the discharge nozzle member 320 is formed with an outer diameter larger than an adjacent position at a position corresponding to the inner side of the hollow passage member with a large inner diameter, so that when the injection pressure of the grout material is generated from the injection pipe injection member, it is on the inner wall of the hollow passage member. a support member 322 that is hooked and fixed; It is formed integrally with the support member toward the outside of the hollow passage member, and when the grout material injection pressure is generated from the injection pipe injection member, the backflow blocking passage member 321 is opened and the grout material injection pressure from the injection tube injection member is lowered. It may further include; an open and close member 323 for closing the backflow blocking passage member 321 by the tension of its own body.

On the other hand, the third region member 123 may be formed so that the outer edge of its cross section is relatively smaller than the outer edge formed by the cross section of the first area member and the cross section of the second area member corresponding to the partition space. have.

On the other hand, the first region member 121 may include a first epoxy injection groove member 121a in which a predetermined region is cut along its circumferential direction among its outer surfaces adjacent to the inner wall of the injection tube member. can

The second region member 122 may include a second epoxy injection groove member 122a in which a predetermined region is cut along its circumferential direction among its outer surfaces adjacent to the inner wall of the injection tube member. have.

At this time, the injection pipe member 110, the first epoxy injection hole member 112 communicating with the first epoxy injection groove member at a position corresponding to the first epoxy injection groove member; A second epoxy injection hole member 113 communicating with the second epoxy injection groove member at a position corresponding to the second epoxy injection groove member; may be provided.

And, a first epoxy injection groove member, a first epoxy injection hole member, a first backflow blocking epoxy member 151 cured in a form connecting the space between the first epoxy injection groove member and the first epoxy injection hole member; A second epoxy injection groove member, a second epoxy injection hole member, a second backflow blocking epoxy member 152 cured in a form connecting the space between the second epoxy injection groove member and the second epoxy injection hole member; further including can be configured.

On the other hand, the injection tube member 110 is formed in a form in which a plurality of single tube members 110a and 110b are connected to each other, and one single tube member 110a having one end bent inwardly is the other single tube member 110b. ) may be configured in a form that is fitted inside one end.

The present invention shows the advantage of blocking the backflow to the inside of the injection pipe member again during the process of spraying the grout material from the injection pipe member to the packer member inside the inclined drilling hole by having a backflow blocking check valve.

In addition, according to the present invention, since the backflow blocking valve member has a unique structure of the valve housing member and the discharge nozzle member, the operation of the backflow blocking valve member is smoothly performed, and spraying of the grout material or blocking the backflow can be performed stably. it turns out

In addition, the present invention is provided with a caulking bag member, a plurality of rear end block members, and a bag fixing member, so that the caulking bag member can properly caulk the inlet portion of the drilling hole while maintaining the original structure even when high-pressure caulking at the inlet portion of the drilling hole. indicate the advantages.

In addition, the present invention provides an epoxy injection groove member, a backflow blocking epoxy member, and an epoxy injection hole member, so that even when high-pressure grouting is performed on the inside of the injection pipe member, based on good caulking of the inlet of the drilling hole, the injection pipe member It shows the advantage of blocking the reverse flow based on the epoxy injection groove member from the inside.

In addition, the present invention also shows the advantage of being able to easily perform coupling between the injection pipe member and the pressing area partition member by providing the epoxy injection groove member, the backflow blocking epoxy member, and the epoxy injection hole member.

[Figure 1] is a cross-sectional view of the tunnel excavation site before the grouting device is installed,
[FIG. 2] is a view showing the state in which the perforated hole is formed in [FIG. 1];
3 is a view schematically showing a one-step multi-stage pressure grouting apparatus and a rear end block member of a caulking part according to the present invention;
[Figure 4] is a view schematically showing the installation state of the one-step multi-stage pressure grouting device and the caulking part according to the present invention;
[FIG. 5] is a view showing the state in which the epoxy member is filled in the epoxy injection groove member in [FIG. 4] and the caulking bag member is expanded;
[FIG. 6] is an enlarged view by extracting the pressing area partition member and its surroundings from [FIG. 4];
[FIG. 7] is an enlarged view of the pressing area partition member and its surroundings in [FIG. 5],
[FIG. 8] is an enlarged view of the rear end block member and its surroundings in [FIG. 3],
[FIG. 9] is an enlarged view of the rear end block member and its surroundings in [FIG. 4],
[FIG. 10] is an enlarged view of the rear end block member and its surroundings in [FIG. 5],
[FIG. 11] is an enlarged view showing a portion of the injection pipe member in which the pressure hole is located in [FIG. 7] and the reverse flow blocking valve member before being coupled to the pressure hole,
[Fig. 12] is a view showing a state in which the reverse flow blocking valve member is fitted into the pressurized hole in [Fig. 7];
[Fig. 13] is a view showing a process in which the grout material is ejected through the ejection nozzle member in [Fig. 7];
[FIG. 14] is an exemplary view showing a forming process according to another embodiment of the injection pipe member in [FIG. 4];
[FIG. 15] is a view showing a state in which the injection pipe member on [FIG. 14] is coupled,
[FIG. 16] is a schematic enlarged view by extracting a part of the injection pipe injection member from [FIG. 10],
[FIG. 17] is a schematic enlarged view of the injection pipe injection member viewed from the bottom of [FIG. 16];
[FIG. 18] is a view showing a state in which the injection inner cylinder member is rotated by a predetermined angle in the clockwise direction based on the injection outer cylinder member in [FIG. 17].

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

[Fig. 3] is a view schematically showing the rear end block member of the one-step multi-stage pressing grouting apparatus and the caulking portion according to the present invention, and [Fig. It is a schematic view, and [Fig. 5] is a view showing a state in which the epoxy member is filled in the epoxy injection groove member and the caulking bag member is expanded in [Fig. 4], and [Fig. 6] is pressurized in [Fig. 4] It is an enlarged view by extracting the region partition member and its surroundings, [FIG. 7] is an enlarged view by extracting the pressing region partition member and its periphery from [FIG. 5], and [FIG. 8] is [FIG. 3] It is an enlarged view by extracting the rear end block member and its surroundings, [Fig. 9] is an enlarged view by extracting the rear end block member and its surroundings from [Fig. 4], and [Fig. It is an enlarged view by extracting the rear end block member and its surroundings.

Referring to [Fig. 3] to [Fig. 7], the one-step multi-stage pressure grouting apparatus having a concentric dual injection tube injection member according to the present invention includes an injection tube member 110, a pressing area partition member 120, and an injection tube. The injection member 130 , the packer member 160 , the rear end block members 221 and 222 , the caulking bag member 230 , the caulking hose member 240 , and the backflow blocking valve member 300 may be included.

The injection pipe member 110 is preferably made in the form of a hollow pipe and may be formed to be elongated to be inserted into the perforation hole 10 that is obliquely drilled in the upward direction as shown in FIGS. 3 to 7 .

The injection pipe member 110 may have a plurality of pressing holes 111 and 111 ′ penetrating the inside and outside of its body as shown in FIGS. 6 and 7 .

In addition, the injection tube member 110 may communicate with its rear end through the injection tube injection member 130 to the inlet of the perforation hole 10 as shown in FIGS. 3 to 7 .

Here, the pressing holes (111, 111') are formed in the injection pipe member 110 at a position corresponding to the partition space (G) by the pressing region partition member 120 as in [Figs. 6] and [Fig. 7]. As a hole, it serves as a passage so that the grout material inside the injection pipe member 110 can be ejected to the packer member 160 outside the injection pipe member 110 .

The pressing holes 111 and 111 ′ are preferably formed in a tapered shape whose inner diameter gradually decreases from the outside to the inside of the injection tube member 110 as shown in FIGS. 11 to 13 below. can

On the other hand, the injection pipe member 110 may be formed to be elongated in the form of a hollow pipe as shown in [Fig. 3] and [Fig. 4].

In addition, the injection pipe member 110 may have a plurality of discharge holes formed along its longitudinal direction so that the grout material injected from the outside into the inside of its body can be discharged to the inside of the perforated hole 10, which is the outside of itself. .

In addition, the perforated hole 10 and the injection pipe member 110 shown in [FIG. 3] and [FIG. 4] are extracted based on one pressing area partition member 120, and in fact, the injection pipe member 110. In the longitudinal direction of the both ends may be formed to be sufficiently longer.

Of course, if the injection pipe member 110 is further extended to both ends of [FIG. 3] and [FIG. 4], preferably a plurality of pressing region partition members 120 are arranged along the longitudinal direction of the injection pipe member 110. can be

On the other hand, the injection pipe member 110 may be preferably made of a synthetic resin material (eg, PVC, PP, PE, etc.), but most preferably a metal material as a steel pipe.

On the other hand, the injection pipe member 110 may include one or more first epoxy injection hole members 112 and 112 ′ and one or more second epoxy injection hole members 113 and 113 ′ as shown in FIG. 6 . have.

The first epoxy injection hole members 112 and 112' penetrate one or more inside and outside of the injection pipe member 110 corresponding to the first epoxy injection groove member 121a as in [Fig. 6]. It may communicate with the groove member 121a.

The second epoxy injection hole members 113 and 113' pass through one or more of the inside and outside of the injection pipe member 110 corresponding to the second epoxy injection groove member 122a as in [Fig. 6]. It may communicate with the groove member 122a.

A plurality of pressing region partition members 120 may be disposed inside the injection tube member 110 in a state in which they are spaced apart from each other along the longitudinal direction of the injection tube member 110 as shown in [Fig. 3] to [Fig. 7]. have.

Through this, the inside of the injection tube member 110 is divided into multiple stages along the longitudinal direction of the injection tube member 110 .

To this end, the pressing region partition member 120 is divided into a first region member 121, a second region member 122, and a third region member 123 as in [Figs. 6] and [Fig. 7]. can be done

In this case, the first region member 121 and the second region member 122 may be formed symmetrically to each other as shown in FIGS. 6 and 7 .

The first region member 121 is inserted into the injection tube member 110 as shown in FIGS. 6 and 7 , and then the injection tube member 110 corresponding to the rear end of the pressing region partition member 120 . ) indicates the part that engages with the inner wall.

The second region member 122 is inserted into the injection tube member 110 as in [Fig. 6] and [Fig. 7], and then the injection tube member 110 corresponding to the front end of the pressing region partition member 120. represents the part that engages with the inner wall of

And, the first region member 121 and the second region member 122 are arranged side by side spaced apart along the longitudinal direction of the injection tube member 110 as in [Fig. 6] and [Fig. The outer surface may be formed to be close to the inner wall of the injection tube member 110 .

Here, the first region member 121 has a first epoxy injection groove member 121a as in [Fig. 6], and the second region member 122 has a second epoxy injection groove as in [Fig. 6]. A member 122a may be provided.

The first epoxy injection groove member 121a has an inner wall of the injection tube member 110 and an outer surface of the first region member 121 adjacent to the outer surface of the first region member 121 in the circumferential direction of the first region member 121 as shown in FIG. 6 . Accordingly, a predetermined region may be cut and formed.

At this time, as the epoxy foam injected from the outside through the first epoxy injection hole members 112 and 112 ′ formed in the injection tube member 110 is filled in the first epoxy injection groove member 121a, the structure as shown in FIG. 7 . can form.

The second epoxy injection groove member 122a has an inner wall of the injection pipe member 110 and an outer surface of the second region member 122 adjacent to it in the circumferential direction of the second region member 122 as shown in FIG. 6 . Accordingly, a predetermined region may be cut and formed.

Here too, as the epoxy foam injected from the outside through the second epoxy injection hole members 113 and 113 ′ formed in the injection pipe member 110 is filled in the second epoxy injection groove member 122a, as in [Fig. can form the same structure.

The third region member 123 interconnects the first region member 121 and the second region member 122 as shown in Figs. 6 and 7, but forms a partition space (G). Here, the partition space G is a space communicating with the pressing holes 111 and 111' of the injection pipe member 110, and as shown in FIGS. 6 and 7, the first region member 121 and the second It represents an empty space where the region members 122 face each other.

As a result, the grout material ejected from the injection hole formed in the injection pipe injection member 130 passes through the communication hole 123a of the third region member 123 and then the partition space G on [Fig. 6] and [Fig. 7]. ) is filled in.

Then, the grout material filled in the partition space (G) through the pressure holes (111, 111') of the injection pipe member 110 by the increasing pressure in the partition space (G) to the inside of the perforation hole (10) can be injected.

Here, the third region member 123 preferably has an outer border of its cross-section so that the partition space G on [ FIGS. 6 and 7 ] can be formed in the pressing region partition member 120 . Corresponding to (G), the outer edge formed by the cross section of the first region member 121 and the outer edge formed by the cross section of the second region member 122 may be depressed to be relatively smaller than the outer edge formed by the cross section of the second region member 122 .

As a result, as in [Figs. 6] and [Fig. 7], the dividing space G of the pressing area dividing member 120 and the pressing holes 111 and 111' of the injection pipe member 110 are configured to be interconnected. , Prevents the grout material discharged in the direction of the perforation hole 10 through the partition space G of the pressing area partition member 120 and the pressing holes 111 and 111' of the injection pipe member 110 from flowing backward in the opposite direction It also functions as a so-called check valve.

The injection tube injection member 130 is inserted into the injection tube member 110 in a state of penetrating the pressing region partition member 120 as shown in FIGS. 3 to 7 , and a grout material in the injection tube member 110 . inject

Here, the injection tube injection member 130 is a hollow pipe-shaped injection outer cylinder member 131 and the injection inner cylinder member 132 may be arranged in a dual type concentric circle, such injection tube injection member 130 is a perforated hole ( 10) may be extended to one end of the injection tube member 110 corresponding to the outside.

And, as the injection pipe injection member 130 is disposed so that the injection hole passing through its interior and exterior communicates with the communication hole 123a of the third region member 123 as shown in FIGS. 6 and 7, the The grout material injected through the injection hole sequentially passes through the communication hole 123a of the third region member 123 and the partition space G on [ FIGS. 6 and 7 ] to the inside of the packer member 160 . can be sprayed.

On the other hand, the detailed configuration of the injection tube injection member 130 of the outer cylinder member 131 and the injection inner cylinder member 132 will be described in detail through [Fig. 16] to [Fig. 18] below.

Packer member 160 along the longitudinal direction of the injection pipe member 110 in the form of surrounding the injection pipe member 110 so as to communicate with the pressing holes (111, 111') as in [FIG. 3] to [FIG. 7] It may be disposed on the outer surface of the injection tube member (110).

And, the packer member 160 is disposed along the circumference of the injection pipe member 110 on the outer surface of the injection pipe member 110 and is formed by the grout material injected inside itself [FIG. 5] and [FIG. 7] It fills the space between the injection tube member 110 and the perforation hole 10 while expanding as in FIG.

Here, the packer member 160 is preferably an injection tube member ( 110) can maintain a state in which the empty space is partitioned in multiple stages along its longitudinal direction.

And, injection in a state in which the inside of the injection tube member 110 is divided into multiple stages by the pressing region partition member 120 along the longitudinal direction of the injection tube member 110 as shown in FIGS. 3 to 7 . The grout material may be simultaneously ejected into the perforated hole 10 through the discharge holes formed in a plurality of the injection tube member 110 along the longitudinal direction of the tube member 110 .

At this time, as the caulking bag member 230 maintains the caulking state at the entry portion of the perforation hole 10 , the grout material injected into the perforation hole 10 can effectively press the perforation hole 10 .

To this end, the packer member 160 is disposed in a shape surrounding the injection tube member 110 to communicate with the pressing hole 111 of the injection tube member 110 as in [Figs. 5] and [Fig. 7], and the pressing hole It is expanded by the grout material ejected through (111, 111').

Meanwhile, the present invention may further include a first backflow blocking epoxy member 151 and a second backflow blocking epoxy member 152 as shown in FIGS. 5 and 7 .

The first backflow blocking epoxy member 151 includes the first epoxy injection groove member 121a and the first epoxy injection hole members 112 and 112 in the first region member 121 as shown in FIGS. 5 and 7 . '), the first epoxy injection groove member (121a) and the first epoxy injection hole member (112, 112') can be cured in the form of connecting the space.

That is, when the epoxy foam is injected through the first epoxy injection hole members 112 and 112' from the outside of the injection pipe member 110, the epoxy foam is injected with the first epoxy as in [Fig. 7] by the injection pressure. The groove member (121a), the first epoxy injection hole member (112, 112'), the first epoxy injection groove member (121a) and the space between the first epoxy injection hole member (112, 112') can be filled in the form of connecting have.

As shown in FIG. 7 , the filled epoxy foam is cured over time so that the grout material inside the injection pipe member 110 can be partitioned without backflowing based on the first region member 121 .

The second backflow blocking epoxy member 152 is a second epoxy injection groove member 122a and a second epoxy injection hole member 113 and 113 in the second region member 122 as shown in FIGS. 6 and 7 . '), the second epoxy injection groove member 122a and the second epoxy injection hole member (113, 113') may be cured in a form connecting the space.

That is, when the epoxy foam is injected through the second epoxy injection hole members 113 and 113' from the outside of the injection pipe member 110, the epoxy foam is injected with the second epoxy as shown in FIG. 7 by the injection pressure. The groove member (122a), the second epoxy injection hole member (113, 113'), the second epoxy injection groove member (122a) and the space between the second epoxy injection hole member (113, 113') can be filled in the form of connecting have.

In this way, the epoxy foam filled as shown in FIG. 7 is cured over time so that the grout material inside the injection pipe member 110 can be partitioned without backflowing based on the second region member 122 .

On the other hand, together with the first and second backflow blocking epoxy members 151 and 152 so as to block the reverse flow between the regions partitioned for each section inside the injection pipe member 110 around the pressing region partition member 120 . O-ring members 141 and 142 may be provided.

6 and 7, the outer surface of the injection tube injection member 130 and the inner wall of the first region member 121 facing the first region member 121 of the pressing region partition member 120 At least one O-ring member 141 provided in a ring shape blocks between the outer surface of the injection tube injection member 130 and the inner wall of the first region member 121 .

6 and 7, the outer surface of the injection pipe injection member 130 and the inner wall of the second region member 122 facing the second region member 122 of the pressing region partition member 120 At least one O-ring member 142 provided in a ring shape blocks between the outer surface of the injection tube injection member 130 and the inner wall of the second region member 122 .

In this way, as each O-ring member 141 and 142 is provided at the portion where the outer surface of the injection tube injection member 130 and the pressure region partition member 120 abut, the space G is separated from the injection tube injection member 130 . The pressure of the grout material injected into the inner side of the injection tube member 110 may be uniformly applied through the plurality of pressing holes 111 and 111 ′ of the injection tube member 110 formed along the longitudinal direction.

As the rear end block members 221 and 222 are provided in plurality so that the injection tube injection member 130 penetrates its central portion along its longitudinal direction, the injection tube injection member as shown in [Figs. 8 to 10]. It may be disposed in a form that surrounds the rear end of the 130 .

The rear end block members 221 and 222 are disposed on the outermost side of the drilling hole 10 as in [Fig. ] to [Fig. 10], it is possible to support the caulking bag member 230, which is a caulking member connected to its outer surface.

To this end, the plurality of rear end block members 221 and 222 are formed with the first grip groove member 221a and the first grip groove member 221a, respectively, as in [Figs. A second grip groove member 222a may be provided.

The first grip groove member 221a has a predetermined area in the circumferential direction of the outer surface of the one rear end block member 221 so that the opened end of the caulking bag member 230 is fitted. It can be formed by depression.

The second grip groove member 222a has a predetermined region along the circumferential direction of the outer surface of the other rear end block member 222 so that the other open end of the caulking bag member 230 is fitted [Fig. 8] to [Fig. 9]. ] can be formed as a depression.

The caulking bag member 230 may be arranged in the form of a bag along the outer surface periphery of the rear end block members 221 and 222 as shown in FIGS. 9 and 10 .

Here, the caulking bag member 230 has the first and second bag fixing members ( As it is pressed through 261 and 262, it is possible to maintain a stably fixed state with respect to the plurality of rear end block members 221 and 222.

The caulking bag member 230 closes the inlet portion of the perforation hole 10 while expanding as shown in FIG. 10 by the grout material injected from the outside.

The caulking hose member 240 is in the form of a hose from the outside as in [Figs. It guides the injection of grout material into the inner side of the caulking bag member 230 as it passes through one side wall of the caulking bag member 230 and communicates with the inside.

Meanwhile, the present invention may further include a first bag fixing member 261 and a second bag fixing member 262 .

The first bag fixing member 261 may preferably be of a ring type. The first bag fixing member 261 is a first grip groove member ( The first grip groove member 221a may be pressed in a form surrounding the 221a.

The second bag fixing member 262 may also preferably be of a ring type. The second bag fixing member 262 is a second grip groove member in a state in which the opened other end of the caulking bag member 230 is fitted into the second grip groove member 222a as shown in FIGS. 9 and 10 . It is possible to press the second grip groove member (222a) in a form surrounding the (222a).

At this time, the caulking hose member 240 has a rear end block member 222 whose front end is located at the mouth side of the perforation hole 10 among the plurality of rear end block members 221 and 222 as shown in FIGS. 8 to 10 . ) can be communicated to the inside of the caulking bag member 230 by penetrating from one side wall to the other side wall.

As a result, even when high-pressure caulking is performed at the inlet of the perforated hole 10 , the caulking bag member 230 can properly caulk the inlet of the perforated hole 10 while maintaining the original structure.

[Fig. 11] is an enlarged view showing a portion of the injection pipe member in which the pressurized hole is located in [Fig. 7] and the reverse flow blocking valve member before being coupled to the pressurized hole, and [Fig. 12] is the reverse flow in [Fig. 7]. It is a view showing a state in which the shut-off valve member is fitted into the pressurizing hole, and [Fig. 13] is a view showing the process in which the grout material is ejected through the discharge nozzle member in [Fig. 7].

Referring to [FIG. 11] to [FIG. 13], the backflow blocking valve member 300 may be fitted into the pressing holes 111 and 111' formed in the injection pipe member 110.

The backflow blocking valve member 300 is fitted into the pressure hole 111 formed in the injection pipe member 110 in a double wedge shape as shown in FIGS. 11 to 13 . When the grout material injected from the injection pipe injection member 130 located inside is injected to the outside of the injection pipe member 110 through the pressing hole 111, it is effectively blocked from flowing back into the pressing hole 111. .

To this end, the backflow blocking valve member 300 is a valve housing member 310 to enable double wedge-shaped coupling to the pressing hole 111 of the injection pipe member 110 as shown in FIGS. 11 to 13 . ) and the discharge nozzle member 320 may be provided.

The valve housing member 310 may be fitted into the pressing hole 111 from the state of [Fig. 11] to the state of [Fig. 12].

Here, the process in which the valve housing member 310 is fitted to the pressurizing hole 111 may be performed by screwing, or may be fastened as shown in [Fig.

If the valve housing member 310 is fitted into the pressing hole 111 as shown in [Fig. 12] in a screwing manner, a thread should be formed on the outer surface of the valve housing member 310 and the inner wall of the pressing hole 111. will be.

And, if the valve housing member 310 is fitted to the pressurizing hole 111 as shown in [Fig. 12] in an interference fit method by an external impact, the valve housing member 310 is a metal softer than the injection pipe member 110. It is preferably composed of a synthetic resin material.

The valve housing member 310 may include a hollow passage member 311 as the central portion of its body along the longitudinal direction of the pressing hole 111 is formed through as shown in FIGS. 11 to 13 . .

The discharge nozzle member 320 may be fitted to the hollow passage member 311 as shown in FIGS. 11 and 12 .

The discharge nozzle member 320 is a backflow blocking passage member in the central portion of its body along the longitudinal direction of the valve housing member 310 as in [Fig. 11] and [Fig. 12] to enable the movement of the grout material inside the body. 321 may be formed through.

As a result, when the grout material injection pressure from the injection pipe injection member 130 is generated inside the injection pipe member 110, the discharge nozzle member 320 closes the backflow blocking passage member 321 as in [Fig. 13]. open it

Then, the discharge nozzle member 320 closes the backflow blocking passage member 321 as shown in FIG. 12 when the grout material injection pressure inside the injection pipe member 110 is lowered.

To this end, the backflow blocking passage member 321 formed in the inner central portion of the discharge nozzle member 320 has a structure in which the discharge tip of the discharge nozzle member 320 is mechanically blocked as shown in FIGS. 11 and 12 . In the in state, the tip of the discharge nozzle member 320 may be torn through the thin blade.

Accordingly, when the grout material is sprayed from the inside to the outside of the injection pipe member 110, the backflow blocking passage member 321 corresponding to the tip of the discharge nozzle member 320 by tension is shown in [Fig. When it is opened together and the injection pressure of the grout material is lowered inside the injection pipe member 110 , the backflow blocking passage member 321 corresponding to the front end of the discharge nozzle member 320 by the restoring force of the discharge nozzle member 320 ) is closed as in [Fig. 12].

On the other hand, the pressing hole 111 is preferably as shown in [Fig. The inner diameter of the injection tube member 110 from the outside toward the inside may be configured in a tapered shape that gradually decreases.

At this time, the valve housing member 310 has an outer diameter of its own body corresponding to the inner diameter of the pressurizing hole 111 toward the inside of the pressurizing hole 111. As shown in FIGS. 11 to 13, the outer diameter is gradually increased. It may be configured in a tapered shape that becomes smaller.

Here, the hollow passage member 311 may be configured in a tapered shape in which the inner diameter of the body gradually increases toward the inside of the pressurizing hole 111 as shown in FIGS. 11 to 13 .

That is, the backflow blocking valve member 300 composed of the valve housing member 310 and the discharge nozzle member 320 is disposed in the pressing hole 111 of the injection pipe member 110 as shown in FIGS. 11 to 13 . It is joined in the form of a double wedge.

As a result, even when the high-pressure injection of the grout material is made from the inside of the injection pipe member 110 through the pressurizing hole 111 in a state in which the discharge nozzle member 320 is fitted to the hollow passage member 311, the discharge nozzle The member 320 does not disengage from the valve housing member 310 .

On the other hand, the discharge nozzle member 320 may further include a support member 322 and an open/close member 323 as shown in FIGS. 11 to 13 .

The support member 322 may be formed to have an outer diameter at a position corresponding to an inner side of the hollow passage member 311 having a larger inner diameter than an outer diameter at an adjacent position as shown in FIGS. 11 to 13 .

As a result, when the injection pressure of the grout material is generated from the inside of the injection pipe member 110 through the injection pipe injection member 130, the support member 322 is the hollow passage member 311 as in [Fig. 11] to [Fig. 13]. ) can be hung and fixed on the inner wall of the

In addition, the support member 322 may form a stepped portion in which the diameter of the outer surface suddenly increases as shown in FIGS. 11 to 13 in the vicinity of the boundary with the open and close members 323 .

At this time, the hollow passage member 311 of the valve housing member 310 also corresponds to the stepped portion formed by the support member 322 and the open and close member 323, and as the inner wall of the corresponding portion is recessed. 13], when the grout material is sprayed through the backflow blocking passage member 321, it is possible to block the discharge nozzle member 320 from being separated from the front of the hollow passage member 311 in the direction in which the grout material is sprayed.

The open and close member 323 may be integrally formed with the support member 322 toward the outside of the hollow passage member 311 as shown in FIGS. 11 to 13 .

Here, the open and close member 323 opens the backflow blocking passage member 321 as shown in FIG. 13 when the injection pressure of the grout material is generated from the injection pipe injection member 130 in the injection tube member 110 .

And, when the grout material injection pressure from the injection tube injection member 130 in the injection tube member 110 is lowered, the open and close member 323 is a backflow blocking passage as in [Fig. 12] by the tension of its own body. By closing the member 321, the reverse flow of the grout material through the pressing holes 111 and 111' is consequently blocked.

[FIG. 14] is an exemplary view showing a process of forming an injection tube member, which is a configuration of the present invention, and [FIG. 15] is a view showing a state in which the injection tube member on [FIG. 14] is coupled.

Referring to [Fig. 14] and [Fig. 15], in the injection tube member 110, which is a configuration of the present invention, a plurality of single tube members 110a and 110b formed in a bar shape may be connected to each other in a longitudinal direction.

The number of single tube members 110a and 110b may increase or decrease according to the depth of the perforated hole 10, and may preferably be connected in a so-called rolling method as in [Fig. 14] and [Fig. 15].

For example, as in [FIG. 14], one end of the single pipe member 110a is bent inwardly by crumpling, and then one end of the single pipe member 110b is inserted and connected as shown in [FIG. 15]. can

At this time, as in [Fig. 15], as the ends of each single tube member (110a, 110b) are fastened through the overlapped portion through the rivet or fastening bolt (B) in the overlapped state, each single tube member (110a) , 110b) is not separated again, and the superimposed state can be firmly maintained.

Here, as in [Fig. 15], as the plurality of single tube members 110a and 110b are thickly connected to each other in a state of being superimposed on each other, the rigidity (eg, shear strength) is weakened by tapping the thread in the existing connection part. can be reinforced.

[FIG. 16] is a schematic enlarged view by extracting a part of the injection pipe injection member from [FIG. 10], and [FIG. 17] is a schematic enlarged view of the injection pipe injection member viewed from the bottom of [FIG. 16] It is one view, and [FIG. 18] shows a view showing a state in which the injection inner cylinder member is rotated by a predetermined angle in the clockwise direction based on the injection outer cylinder member in [FIG. 17].

Referring to [FIG. 16] to [FIG. 18], the injection tube injection member 130, which is a configuration of the present invention, may include an injection outer cylinder member 131 and an injection inner cylinder member 132.

The injection tube member 131 is made in the form of a hollow pipe with reference to FIGS. 6 and 7 , and may be inserted into the injection tube member 110 through the pressure region partition member 120 .

Referring also to [Fig. 6] and [Fig. 7], the injection inner tube member 132 is made in the form of a hollow pipe, and the outer surface of the body is in contact with the inner wall of the injection outer tube member 131 of the injection outer tube member 131. It may be rotated in place from the inside or may be fitted concentrically to enable removal from the injection barrel member 131 .

Meanwhile, the injection outer cylinder member 131 may include a first outer cylinder injection hole 131a and a second outer cylinder injection hole 131b as shown in FIGS. 16 to 18 .

The first outer cylinder injection hole (131a) is formed to penetrate the inside and outside of its body at a position corresponding to the partition space (G) as in [FIG. 16] to [FIG. can guide you.

The second outer cylinder injection hole 131b is formed in a circular cross-section of its own body to enable injection of the grout material into the injection pipe member 110 deviated from the pressing area partition member 120 as in [Fig. 16] to [Fig. 18]. 1 may be formed through the inside and outside of the body in the longitudinal line of the body rotated at a predetermined rotation angle from the outer cylinder injection hole (131a).

On the other hand, the injection inner cylinder member 132 may be provided with a first inner cylinder injection hole (132a) and a second inner cylinder injection hole (132b) as in [FIG. 16] to [FIG. 18].

The first inner cylinder injection hole (132a) is formed to penetrate the inside and outside of its own body at a position corresponding to the partition space (G) as in [Fig. 16] to [Fig. 18] communicates with the first outer cylinder injection hole (131a) It is possible to guide the injection of the grout material with respect to the partition space (G) in the state that was done.

The second inner cylinder injection hole (132b) may be disposed on a straight line with the first inner cylinder injection hole (132a) in the longitudinal line of its body as in [Fig. 16] to [Fig. 18], and its body is an injection outer cylinder member When it is rotated by a predetermined rotation angle while being inserted into the inner side of the 131 , it may be formed through the inside and outside of its body so as to communicate with the second outer cylinder injection hole 131b.

In summary, the injection inner cylinder member 132 is predetermined based on the injection outer cylinder member 131 according to a user's operation among one or more injection holes formed in the injection outer cylinder member 131 and one or more injection holes formed in the injection inner cylinder member 132 . As the angle is rotated, the grout material is first injected into the packer member 160 by first communicating at a position corresponding to the partition space (G).

Then, the injection inner cylinder member 131 is rotated at a predetermined angle based on the injection outer cylinder member 131 according to the user's manipulation, and the injection outer cylinder member 131 corresponding to the portion where the pressing region partition member 120 is not located. The injection hole of the injection hole and the injection hole of the injection inner cylinder member 132 are communicated, and as a result, the grout material injected from the injection tube injection member 130 is in the entire range within the injection tube member 110 where the pressing area partition member 120 is not located. It can be filled in multiple stages at the same time.

10: perforated hole
20: ground
110: injection pipe member
110a, 110b: single tube member
111, 111': pressurized hole
112, 112': first epoxy injection hole member
113, 113': second epoxy injection hole member
120: pressure region partition member
121: first area member
121a: first epoxy injection groove member
122: second region member
122a: second epoxy injection groove member
123: third region member
123a: communication hole
130: injection pipe injection member
131: injection outer cylinder member
131a: first external cylinder injection hole
131b: second external cylinder injection hole
132: injection inner cylinder member
132a: first inner cylinder injection hole
132b: second inner cylinder injection hole
141, 142: O-ring member
151: first backflow blocking epoxy member
152: second backflow blocking epoxy member
160: Packer absence
221, 222: rear end block member
221a: first grip groove member
222a: second grip groove member
230: No caulking bag
240: absence of caulking hose
261: first pocket fixing member
262: second pocket fixing member
300: backflow blocking valve member
310: valve housing member
311: hollow passage member
320: discharge nozzle member
321: backflow blocking passage member
322: support member
323: open and close absence
G: compartment space
B : fastening bolt

Claims (7)

The injection pipe member 110 is formed long to be inserted into the perforated hole obliquely in the upward direction, is made in the form of a hollow pipe, and is formed with a plurality of pressing holes (111, 111') penetrating the inside and outside of its body;
A first region member 121 inserted inside the injection tube member and engaged with the inner wall of the injection tube member, and the injection tube in a state in which the first region member is spaced apart and connected along the longitudinal direction of the injection tube member The second region member 122 engaged with the inner wall of the member and the first and second region members are interconnected, but a space communicating with the pressurizing hole (hereinafter referred to as a 'compartment space') is formed between the injection pipe member and the second region member 122 a pressing region partition member 120 comprising a third region member 123 formed in the ?
The injection tube is inserted into the inner side of the injection tube member through the pressing area partition member and is arranged in a dual type concentric circle to inject the grout material into the interior and the partition space of the injection tube member and corresponds to the outside of the perforation hole. an injection tube injection member 130 disposed extending to one end of the member;
a packer member 160 disposed in a shape surrounding the injection pipe member to communicate with the pressing hole and expanded by the grout material ejected through the pressing hole;
A plurality of rear end block members (221, 222) disposed in a shape surrounding the injection pipe injection member corresponding to the inlet side of the drilling hole (221, 222);
a caulking bag member 230 disposed in a bag shape along the outer surface of the plurality of rear end block members and closing the inlet portion of the perforation hole while expanding by the grout material injected from the outside;
In the form of a hose, as it communicates with the inside of the caulking bag member through one side wall of the rear end block member located at the mouth side of the drilling hole among the plurality of rear end block members from the outside, the grout material is fed into the inner side of the caulking bag member. a caulking hose member 240;
A backflow blocking valve member 300 that is fitted into the pressurizing hole in a double wedge shape and blocks the grout material injected from the injection pipe injection member from being injected to the outside of the injection tube member through the pressing hole and then backflow into the pressing hole (300) ;
consists of,
The reverse flow blocking valve member 300,
a valve housing member 310 fitted into the pressing hole and having a hollow passage member 311 penetrated in the longitudinal direction of the central portion of its body along the longitudinal direction of the pressing hole;
The discharge nozzle member 320 is fitted with the hollow passage member and has a backflow blocking passage member 321 penetrating through the center of the valve housing member along the longitudinal direction of the valve housing member so that the grout material can move inside the body. ;
to provide
The discharge nozzle member 320,
When the grout material injection pressure is generated from the injection pipe injection member, the backflow blocking passage member is opened, and when the grout material injection pressure from the injection tube injection member is lowered, the body has tension to close the backflow blocking passage member. One-step multi-stage pressure grouting apparatus having a concentric dual injection pipe injection member, characterized in that it is composed of ashes.
The method according to claim 1,
The injection pipe injection member 130,
an injection outer cylinder member 131 in the form of a hollow pipe that passes through the pressing region partition member and is inserted into the injection pipe member;
an injection inner cylinder member 132 that is made in the form of a hollow pipe and is concentrically inserted into the inner side of the injection cylinder member so that the outer surface of the body is in contact with the inner wall of the injection cylinder member;
to provide
The injection outer cylinder member 131 is,
a first outer cylinder injection hole (131a) formed to penetrate inside and outside the body at a position corresponding to the partition space to guide the injection of the grout material into the partition space;
The inner and outer parts of the body in the longitudinal line of the body rotated at a predetermined rotation angle from the first outer cylinder injection hole in the circular cross section of the body so that the grout material can be sprayed into the injection pipe member deviating from the pressing area partition member a second outer cylinder injection hole formed therethrough (131b);
to provide
The injection inner cylinder member 132 is,
a first inner cylinder injection hole (132a) formed to penetrate the inner and outer sides of its body at a position corresponding to the partition space and guiding the injection of the grout material into the partition space while communicating with the first outer cylinder injection hole;
Doedoe arranged on a straight line with the first inner cylinder injection hole in the longitudinal line of the body itself to communicate with the second outer cylinder injection hole when the body is rotated by the predetermined rotation angle in a state inserted inside the injection outer cylinder member A second inner cylinder injection hole (132b) formed through the inner and outer of the body;
One-step multi-stage pressure grouting apparatus having a concentric dual injection pipe injection member, characterized in that it comprises a.
delete 3. The method according to claim 2,
The pressing holes (111, 111') are configured in a tapered shape whose inner diameter gradually decreases from the outside to the inside of the injection pipe member,
The valve housing member 310 is configured in a tapered shape in which the outer diameter of its body is gradually reduced toward the inside of the pressing hole in response to the inner diameter of the pressing hole,
The hollow passage member 311 is configured in a tapered shape in which the inner diameter of its body gradually increases toward the inside of the pressing hole,
The discharge nozzle member 320,
As the inner diameter of the hollow passage member is formed to have an outer diameter larger than that of an adjacent position at a position corresponding to the large inner diameter, a support member 322 that is caught and fixed to the inner wall of the hollow passage member when the injection pressure of the grout material is generated from the injection pipe injection member );
It is formed integrally with the support member toward the outside of the hollow passage member, and when the grout material injection pressure is generated from the injection tube injection member, the backflow blocking passage member 321 is opened and the grout material from the injection tube injection member is opened. an open and close member 323 for closing the backflow blocking passage member 321 by the tension of the body when the injection pressure is lowered;
One-step multi-stage pressure grouting apparatus having a concentric dual injection pipe injection member, characterized in that it further comprises.
5. The method according to claim 4,
The third region member 123 is formed to have an outer edge of a cross section that is smaller than an outer edge formed by a cross section of the first region member and a cross section of the second region member corresponding to the partition space. One-step multi-stage pressure grouting apparatus having a concentric dual injection tube injection member, characterized in that.
6. The method of claim 5,
The first area member 121 is
a first epoxy injection groove member (121a) in which a predetermined region is cut and formed along its circumferential direction among its outer surface adjacent to the inner wall of the injection tube member;
to provide
The second region member 122,
a second epoxy injection groove member (122a) in which a predetermined region is cut along its circumferential direction among its outer surface adjacent to the inner wall of the injection tube member;
to provide
The injection pipe member 110,
a first epoxy injection hole member 112 communicating with the first epoxy injection groove member at a position corresponding to the first epoxy injection groove member;
a second epoxy injection hole member 113 communicating with the second epoxy injection groove member at a position corresponding to the second epoxy injection groove member;
to provide
The first epoxy injection groove member, the first epoxy injection hole member, a first backflow blocking epoxy member 151 cured in the form of connecting the space between the first epoxy injection groove member and the first epoxy injection hole member;
The second epoxy injection groove member, the second epoxy injection hole member, a second backflow blocking epoxy member 152 cured in the form of connecting the space between the second epoxy injection groove member and the second epoxy injection hole member;
One-step multi-stage pressure grouting apparatus having a concentric dual injection tube injection member, characterized in that it further comprises a.
7. The method of claim 6,
The injection pipe member 110 is formed in a form in which a plurality of single pipe members 110a and 110b are connected to each other, and one single pipe member 110a having one end bent inwardly is the other single pipe member 110b at one end. One-step multi-stage pressure grouting device having a concentric dual injection tube injection member, characterized in that it is configured to be fitted inside the part.

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