KR102313337B1 - grouting device by use of packer cover device, and packer cover device for the same - Google Patents

Abstract

The present invention relates to a technology for reinforcing the ceiling of a tunnel in an excavated state by obliquely drilling a part of the ceiling of the tunnel in the process of excavating the tunnel and then injecting a grout material into the drilled hole and, more specifically, to a technology for providing an environment in which a rear end packer member can smoothly expand by preventing the rear end packer member blocking an entrance of the drilled hole from being damaged by external forces (e.g., irregular rockfall from or collapse of the entrance of the drilled hole). In particular, the present invention relates to a technique for easily removing a rear end of a grouting device while excavating the tunnel forward with the grouting device inserted and hardened in the drilled hole of the ceiling. In accordance with the present invention, the grouting device includes the rear end packer member, an expansion supporting member, a front-end supporting member, and a rear end supporting member, so centering the grouting device in the drilled hole can be stably performed.

Description

Grouting device having a packer protection device and a packer protection device for the same

The present invention is a technique for reinforcing the tunnel ceiling in an excavated state by obliquely drilling the ceiling portion of the tunnel in the process of excavating the tunnel and then injecting grout material into the drilled hole.

More specifically, the present invention prevents the rear end packer member blocking the inlet portion of the perforation hole from being damaged from external force (eg, irregular rockfall or collapse at the perforation hole entrance), thereby providing an environment in which the rear end packer member can smoothly expand It's about technology.

In particular, the present invention relates to a technique for easily removing the rear end of the grouting device in the process of excavating the tunnel in a hardened state after the grouting device is inserted into a drilling hole in the ceiling.

[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 the state in which the drilling hole is formed in [FIG. 1].

When excavating a tunnel, a plurality of drilling holes ( After forming 10), a grouting device is inserted to harden the grout material by injection.

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

And, in order to form the perforation hole 10 in the ground 20 above the 'ceiling expected 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 expected line'.

As a result, the ground corresponding to the bottom of the 'ceiling line' among the grouting device and the grout material inserted into the drilling hole 10 has no choice but to be removed in the continuous excavation process of the tunnel.

However, in [Fig. 2], since it is a cross-section, 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 inserted into each perforation hole 10 Then, the grout material is injected.

Then, when the 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' on [Fig. 2]. : About 6 hours per section) There is a problem that it takes too much time.

On the other hand, the packer member located at the rear end of the grouting device is disposed adjacent to the inlet portion of the perforation hole 10, and is torn in the process of entering the perforation hole 10 or even before the grout material is injected. Various situations may occur, such as part collapse. In this case, the packer member does not expand properly, so there is a problem that the process of injecting the grout material into the corresponding perforation hole 10 is not performed smoothly.

Accordingly, the rear end packer member located at the rear end of the grouting device is configured to perform the expansion function properly without being damaged, and the rear end of the grouting device is easily cut in the process of removing the lower part of the ceiling line of the drilling hole. By configuring it, it is required to implement a technology that can solve the problems of the prior art as described above.

The present invention has been proposed in view of the above, and an object of the present invention is to provide a grouting with a packer protection device that enables stable expansion while the rear end packer member is not damaged in the process of the grouting device entering the drilling hole. To provide a device and a packer protection device therefor.

In addition, an object of the present invention is to provide a grouting device having a packer protection device that allows the rear end of the grouting device to be easily removed in the process of removing the lower side of the puncture line of the drilling hole, and a packer protection device for the same.

In order to achieve the above object, a grouting device having a packer protection device according to the present invention is a hollow pipe of a predetermined length located at the rear end of the grouting device inserted into the drilling hole with respect to the drilling hole that is drilled obliquely upward. member 110; The rear end packer member 120 is fitted and disposed on the outer surface of the pipe member and expands according to the filling of the grout material on the inside thereof; One or more pieces are inserted into the pipe member adjacent to the rear end packer member, and the outer surface of the rear end packer member is blocked from the outside in a folded state toward the center of the cross-section of the pipe member. support member 130; a rear end packer injection member 140 in the form of a hose that interfaces with the injection of grout material to the rear end packer member as it is connected in communication with the rear end packer member; An injection pipe member that is formed long to be inserted into the perforation hole, is made in the form of a hollow pipe, has a plurality of pressing holes 151 and 151' penetrating the inside and outside of its body, and its rear end is in communication with the front end of the pipe member (150); a tip support member 160 fixed to the tip of the pipe member adjacent to the injection pipe member by fitting; a rear end support member 170 fixed to the rear end of the pipe member opposite to the front end support member by fitting; a nipple connecting member 180 for connecting the distal end of the pipe member adjacent to the distal end support member and the injection pipe member in a nipple shape; The first region member 211 is 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 is spaced apart from the first region member along the longitudinal direction of the injection tube member to fit the inner wall of the injection tube member. ( 213) consisting of a pressing area partition member 210; The injection pipe injection member 220 is inserted into the injection tube member through the pressure region partition member in a state of being in communication with the pipe member and injects the grout material into the interior and partition space of the injection tube member; may be configured to include.

Here, the extended support member 130 includes a base support member 131 formed in a flat plate shape and penetrating through the pipe member to stand up against the pipe member; One end thereof is connected to the edge of one surface of the base support member to be foldable and expandable with respect to the base support member. It may include a; expansion-type wing member 132 disposed in a shape surrounding the outside of the rear end packer member so as to block external exposure.

And, the expansion support member 130 is disposed to face each other between the rear end support member and the rear end packer member, between the rear end packer member and the front end support member, respectively, and maintains a folded state obliquely toward the center of the rear end packer member. Each member may be configured to expand its folded state in association with the expansion of the member.

In addition, the third region member 213 may have an outer edge formed by the cross section of the first region member to be smaller than the outer edge formed by the cross section of the second region member.

On the other hand, the packer protection device for the grouting device according to the present invention is a hollow pipe member 110 of a predetermined length located at the rear end of the grouting device inserted into the drilling hole with respect to the drilling hole to be drilled obliquely in the upward direction; The rear end packer member 120 is fitted and disposed on the outer surface of the pipe member and expands according to the filling of the grout material on the inside thereof; One or more pieces are inserted into the pipe member adjacent to the rear end packer member, and the outer surface of the rear end packer member is blocked from the outside in a folded state toward the center of the cross-section of the pipe member. support member 130; a rear end packer injection member 140 in the form of a hose that interfaces with the injection of grout material to the rear end packer member as it is connected in communication with the rear end packer member; a tip support member 160 fixed to the tip of the pipe member adjacent to the grouting device by fitting; a rear end support member 170 fixed to the rear end of the pipe member opposite to the front end support member by fitting; It may be configured to include; a nipple connecting member 180 for connecting the distal end of the pipe member adjacent to the end support member and the grouting device in the form of a nipple.

Here, the extended support member 130 includes a base support member 131 formed in a flat plate shape and penetrating through the pipe member to stand up against the pipe member; One end thereof is connected to the edge of one surface of the base support member to be foldable and expandable with respect to the base support member. It may include a; expansion-type wing member 132 disposed in a shape surrounding the outside of the rear end packer member so as to block external exposure.

And, the expansion support member 130 is disposed to face each other between the rear end support member and the rear end packer member, between the rear end packer member and the front end support member, respectively, and maintains a folded state obliquely toward the center of the rear end packer member. Each member may be configured to expand its folded state in association with the expansion of the member.

The present invention has the advantage of enabling stable expansion without damaging the rear end packer member while the grouting device enters the drilling hole by providing the rear end packer member, the expansion support member, the front end support member, and the rear end support member.

In addition, the present invention has the advantage of allowing the rear end of the grouting device to be easily removed in the process of removing the lower side of the ceiling line of the drilling hole as the nipple connection member is provided at the portion connecting the pipe member and the injection pipe member. .

In addition, the present invention also shows the advantage that stable centering of the grouting device is possible in the drilling hole by providing the rear end packer member, the extended support member, the front end support member, and the rear end support 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 a state in which the perforated hole is formed in [FIG. 1];
[FIG. 3] is an exemplary view schematically showing the installation state of a grouting device having a packer protection device according to the present invention and a packer protection device therefor,
[FIG. 4] is a view showing a state in which each packer member is expanded in [FIG. 3];
[FIG. 5] is an enlarged view of an excerpt from [FIG. 3],
[Fig. 6] is an enlarged view of a portion extracted from [Fig. 4],
[Fig. 7] is an enlarged view of the state in which the outer wing member is removed after extracting the extended support member in [Fig. 5];
[Figure 8] is an enlarged view of the state in which the outer wing member is removed after the expansion support member in [Figure 6] is removed;
[FIG. 9] is an enlarged view of the extended support member in [FIG. 6],
[FIG. 10] is an enlarged view of an excerpt of a portion in which the discharge hole is located in [FIG. 3];
[FIG. 11] is an enlarged view of a portion in which the discharge hole is located in [FIG. 4].

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

[Fig. 3] is an exemplary view schematically showing the installation state of a grouting device having a packer protection device according to the present invention and a packer protection device therefor, and [Fig. 4] is an expansion of each packer member in Fig. 3 [Fig. 5] is an enlarged view excerpted from [Fig. 3], [Fig. 6] is an enlarged view excerpted from Fig. 4, and [Fig. 7] is an enlarged view showing the state in which the outer wing member is removed after the extended support member is extracted in [Fig. 5], and [Fig. 8] is the outer wing member after the extended support member in [Fig. 6] is extracted. It is an enlarged view showing the removed state, [Fig. 9] is an enlarged view by extracting the extended support member in [Fig. 6], and [Fig. It is an enlarged view, and [Fig. 11] is an enlarged view of a portion in which the discharge hole is located in [Fig. 4].

3 to 11, the grouting device having a packer protection device according to the present invention is a pipe member 110, a rear end packer member 120, an expansion support member 130, a rear end packer injection member 140 , the injection pipe member 150 , the front end support member 160 , the rear end support member 170 , the nipple connection member 180 , the pressing region partition member 210 , and the injection pipe injection member 220 , including can be configured.

The pipe member 110 may be formed in the form of a hollow pipe, and as shown in FIG. 2, a predetermined portion is provided at the rear end of the grouting device inserted into the drilling hole 10 with respect to the drilling hole 10 that is drilled obliquely in the upward direction. can be arranged in length.

The pipe member 110 may be formed in the form of a hollow pipe as shown in FIGS. 3 to 6 , and may be connected to the injection pipe injection member 220 through the nipple connection member 180 .

As a result, the grout material injected into the pipe member 110 from the outside may be transferred to the injection pipe injection member 220 .

The rear end packer member 120 may be disposed by being fitted on the outer surface of the pipe member 110 as in [Fig. 6] as in the case of expansion.

As such, as in [Fig. 4] and [Fig. 6], as the rear end packer member 120 expands, its outer surface comes into contact with the inner wall of the perforated hole 10, and the grout material in the rear end packer member 120 is cured. As it is, the rear end packer member 120 may maintain a state engaged with the inner wall of the perforation hole 10 .

At this time, one or more extended support members 130 are fitted to the pipe member 110 adjacent to the rear end packer member 120 as shown in Figs. 3 to 6, and the central section of the pipe member 110 is The outer surface of the rear end packer member 120 is blocked from the outside in a state in which the rear end packer member 120 is folded obliquely toward the outside and unfolds outwardly in conjunction with the expansion of the rear end packer member 120 as shown in FIGS. 4 and 6 .

As such, the expanded support member 130 unfolded by the expansion of the rear end packer member 120 can maintain the unfolded state as in [Figs. 4 and 6] by the expansion force of the rear end packer member 120. do.

In addition, referring to [Fig. 7] to [Fig. 9], the extended support member 130 may include a base support member 131 and an expandable wing member 132.

The base support member 131 may preferably be formed in the form of a flat plate in the form of a disk, as shown in FIGS. 7 to 9 . In addition, the base support member 131 may have a through hole 131a through which the pipe member 110 passes in the central portion as shown in FIGS. 7 to 9 .

As a result, the base support member 131 is penetrated by the pipe member 110 as in [FIG. 3] to [FIG. 6] to the pipe member 110 as shown in [FIG. It can be erected and placed.

The expandable wing member 132 preferably has its one end on the edge of one side of the base support member 131 as in [Fig. 7] to [Fig. 9] to enable folding and expansion with respect to the base support member 131 can be connected

In addition, a plurality of extended wing members 132 may be arranged in connection with each other, preferably along the edge of the base support member 131 as shown in [Fig. 7] to [Fig. 9].

As a result, in a state in which the expandable wing member 132 is folded based on the base support member 131 as in [Fig. 7], the outer diameter portion formed by the plurality of expandable wing members 132 is the base support member 131. Located on the inner side of the outer edge of the, as in [Fig. 8] and [Fig. 9], in a state in which the expandable wing member 132 is expanded with respect to the base support member 131, the plurality of expandable wing members 132 are The outer diameter forming part is located outside the outer rim of the base support member 131 .

That is, in the state in which the extended wing member 132 is folded based on the base support member 131 as in [Fig. 7], when the grouting device slides into the perforation hole 10 of [Fig. 2], the rear end packer By maintaining the shape of completely enclosing the member 120, it is possible to completely protect the rear end packer member 120 from external force (eg, the collapse of the inlet portion of the hole or a sharp material on the inner wall of the hole).

In fact, in the state in which the perforation hole 10 is made obliquely as in [Fig. 2], sharp stone roots on the inner wall of the perforation hole 10 or local partial collapse of the corresponding position are frequent due to the nature of the ground 20 of an unspecified structure. can occur

In such a situation, the expansion support member 130 protects the rear end packer member 120 so that the rear end packer member 120 can operate properly, and in a natural state, the base support member 131 as shown in [Fig. ), it is preferable that the extended wing member 132 is configured to maintain the folded state.

As a result, in the process of the grouting device entering the inside of the perforation hole 10, the expandable wing member 132 surrounds the rear end packer member 120 as shown in Figs. 3 and 5, and the rear end packer member (120) can be protected from being broken in the inlet portion of the perforated hole (10).

That is, when a plurality of expansion support members 130 are disposed to face each other as in [FIGS. As each folded front end of the member 132 is disposed to abut against each other, external exposure of the rear end packer member 120 shown in FIGS. 3 and 5 may be blocked.

To this end, each of the expandable wing members 132 is preferably composed of a plurality of inner wing members 132a and a plurality of outer wing members 132b as in [Fig. 3] to [Fig. 6] and [Fig. 9]. may be done

3 to 9, as each outer wing member 132b has one end connected to the front end of each inner wing member 132a, as in [Fig. 8] and [Fig. 9], a plurality of Four expandable wing members 132 may be implemented.

And, in the state in which the expandable wing member 132 is expanded based on the base support member 131 as in [Fig. And as in [Fig. 6], the packer protection device, which is the rear end of the grouting device, can effectively maintain the fixed state in the perforated hole 10 at the corresponding position.

On the other hand, the extended support member 130 is preferably between the rear end support member 170 and the rear end packer member 120, the rear end packer member 120 and the front end support member ( 160) may be disposed to face each other.

In addition, each extended support member 130 maintains the folded state obliquely toward the center of the rear end packer member 120 as in [Figs. 3] and [Fig. 5] in [Figs. It may be configured to expand the folded state in conjunction with the expansion of the rear end packer member 120 filled with the grout material as shown.

The rear end packer injection member 140 is made in the form of a hose, and is connected to the rear end packer member 120 as shown in [Fig. 3] to [Fig. 6]. 120) to the inner side.

The injection pipe member 150 is preferably made of a hollow pipe shape and can be formed to be long to be inserted into the perforation hole 10 as in [Fig. 3] to [Fig. 4] and [Fig. 10] to [Fig. 11]. have.

In addition, the injection tube member 150 may have a plurality of pressing holes 151 and 151 ′ penetrating the inside and outside of its body, as shown in FIGS. 10 and 11 .

In addition, the injection pipe member 150 may be connected to the front end of the pipe member 110 through the nipple connecting member 180 at its rear end as shown in FIGS. 3 to 6 .

Here, the pressing holes 151 and 151 ′ are formed in the injection pipe member 150 at a position corresponding to the partition space G by the pressing area partition member 210 as shown in FIGS. 10 and 11 . As a hole, it serves as a passage for ejecting the grout material in the partition space G to the outside of the injection pipe member 150 .

On the other hand, the injection pipe member 150 is long formed in the form of a hollow pipe so that the grout material injected into the body from the outside can be discharged into the inside of the perforation hole 10 which is the outside of the injection pipe member 150 along its longitudinal direction. A plurality of discharge holes may be formed.

And, the perforated hole 10 and the injection pipe member 150 shown in [Fig. 3] and [Fig. 4] are extracted based on one pressing area partition member 210, and in fact, the injection pipe member 150. In the longitudinal direction of the both ends may be formed longer enough.

Of course, if the injection pipe member 150 is further extended to both ends of [FIG. 3] and [FIG. 4], preferably a plurality of pressing region partition members 210 are disposed along the longitudinal direction of the injection pipe member 150. can be

On the other hand, the injection pipe member 150 may be preferably made of a metal or a synthetic resin material (eg, PVC, PP, PE, etc.), but most preferably a metal material as a steel pipe.

The tip support member 160 may be fixed to the tip portion of the pipe member 110 adjacent to the injection pipe member 150 by, for example, screw coupling, as shown in FIGS. 3 to 6 .

And, as the rear end packer member 120 expands, the front end support member 160 presses the expansion support member 130 to the inside of the perforation hole 10 when the expansion support member 130 is perforated. It supports so as not to be pushed to the inside of the hole (10).

The rear end support member 170 may be fixed to the rear end portion of the pipe member 110 opposite to the front end support member 160, for example, by screwing as shown in FIGS. 3 to 6 .

The nipple connection member 180 connects the distal end of the pipe member 110 adjacent to the distal end support member 160 and the injection pipe member 150 in a nipple form as shown in FIGS. 3 to 6 .

Here, the nipple connection member 180 may be fixed to the front end of the pipe member 110 by, for example, screwing, and may also be fixed to the rear end of the injection pipe member 150 by screwing, preferably connected by welding. may be

In this way, as the front end of the pipe member 110 and the rear end of the injection pipe member 150 are interconnected through the nipple connecting member 180, the tunnel excavation work to remove the lower side of the 'ceiling scheduled line' on [Fig. 2] The lower part of the grouting device may be easily separated from the sign nipple connecting member 180 .

A plurality of pressurized region partition members 210 are spaced apart from each other along the longitudinal direction of the injection tube member 150 as shown in FIGS. 3 to 4 and FIGS. 10 to 11 . It may be disposed inside the member 150 .

Through this, the inside of the injection tube member 150 is divided into multiple stages along the longitudinal direction of the injection tube member 150 .

To this end, the pressing region partition member 210 is divided into a first region member 211, a second region member 212, and a third region member 213 as in [Fig. 10] and [Fig. 11]. can be done

In this case, the first region member 211 and the second region member 212 may be formed symmetrically to each other as shown in FIGS. 10 and 11 .

The first region member 211 is injected adjacent to the partition packer member 190 after being inserted inside the injection tube member 150 among the pressing region partition members 210 as in [Fig. 10] and [Fig. 11]. A portion engaged with the inner wall of the tube member 150 is shown.

The second region member 212 is inserted into the injection tube member 150 like the first region member 211 in FIGS. 10 and 11 among the pressing region partition members 210 and then injected. A portion engaged with the inner wall of the tube member 150 is shown.

In addition, the first region member 211 and the second region member 212 are injected in a state in which they are spaced apart from each other along the longitudinal direction of the injection tube member 150 as shown in FIGS. 10 and 11 . It engages the inner wall of the tube member 150 .

The third region member 213 interconnects the first region member 211 and the second region member 212 as shown in FIGS. 10 and 11 , but forms a partition space (G). Here, the partition space G is a space communicating with the pressing holes 151 and 151' of the injection pipe member 150, and as shown in FIGS. 10 and 11, the first region member 211 and the second It represents an empty space where the region members 212 face each other.

As a result, the grout material ejected from the injection hole formed in the injection pipe injection member 150 passes through the communication hole 213a of the third region member 213 and then in the partition space G on [Fig. 10] and [Fig. 11]. ) is filled in.

Then, the grout material filled in the partition space (G) can be injected into the hole 10 through the pressing hole 151 of the injection pipe member 150 by the increasing pressure in the partition space (G). have.

Here, the third region member 213 has an outer border formed by the cross-section of the first region member 211 and the second region member 213 so that the pressing region partition member 210 can be provided with a partition space (G). It is preferable that the cross section of the region member 212 is formed to be relatively smaller than the outer edge formed by the cross section.

As a result, as in [FIG. 10] and [FIG. 11], the partition space G of the pressing region partition member 210 and the pressing hole 151 of the injection pipe member 150 are configured to interconnect with each other, so that the pressing region The function of a so-called check valve to prevent the grout material discharged in the direction of the perforation hole 10 through the partition space G of the partition member 210 and the pressure hole 151 of the injection pipe member 150 from flowing back in the opposite direction is also responsible

The injection tube injection member 220 is inserted into the injection tube member 150 in a state of penetrating the pressing region partition member 210 as shown in FIGS. 3 to 4 and 10 to 11 . and the grout material is injected into the injection pipe member 150 .

On the other hand, referring to [Fig. 3] to [Fig. 11], the grouting device having a packer protection device according to the present invention further includes a plurality of O-ring members 261,262 and a plurality of watertight maintenance members 271 and 272 can be configured.

10 and 11, the outer surface of the injection tube injection member 220 and the inner wall of the first region member 211 facing the first region member 211 of the pressing region partition member 210 At least one O-ring member 261 provided in a ring shape blocks between the outer surface of the injection tube injection member 220 and the inner wall of the first region member 211 .

10 and 11, the outer surface of the injection tube injection member 220 and the inner wall of the second region member 212 facing the second region member 212 of the pressing region partition member 210 At least one O-ring member 262 provided in the form of a ring blocks the outer surface of the injection tube injection member 220 and the inner wall of the second region member 212 .

In this way, as each O-ring member 261 and 262 is provided at the portion where the outer surface of the injection tube injection member 220 and the pressure region partition member 210 abut, the space G is separated from the injection tube injection member 220 The pressure of the grout material injected into the inner side of the injection tube member 150 may be uniformly applied through the plurality of pressing holes 151 and 151 ′ of the injection tube member 150 formed along the longitudinal direction of the injection tube member 150 .

The watertight retaining members 271,272 are preferably made of a thin soft synthetic resin material, and as shown in Figs. It can be adhered to the cross section.

As a result, as in [Fig. 10] and [Fig. 11], the inner wall of the injection tube member 150 and the pressure region are partitioned at the place where the pressure region partition member 210 slides inside the injection tube member 150 and stops. The watertightness between the members 210 is maintained.

On the other hand, referring to [Fig. 3] to [Fig. 6], the packer protection device for the grouting device according to the present invention is a pipe member 110, a rear end packer member 120, an extended support member 130, a rear end packer It may be configured to include an injection member 140 , a front end support member 160 , a rear end support member 170 , and a nipple connection member 180 .

The pipe member 110 may be formed in the form of a hollow pipe, and as shown in FIG. 2, a predetermined portion is provided at the rear end of the grouting device inserted into the drilling hole 10 with respect to the drilling hole 10 that is drilled obliquely in the upward direction. can be arranged in length.

The pipe member 110 may be formed in the form of a hollow pipe as shown in FIGS. 3 to 6 , and may be connected to the injection pipe injection member 220 through the nipple connection member 180 .

As a result, the grout material injected into the pipe member 110 from the outside may be transferred to the injection pipe injection member 220 .

The rear end packer member 120 may be disposed by being fitted on the outer surface of the pipe member 110 as in [Fig. 6] as in the case of expansion.

As such, as in [Fig. 4] and [Fig. 6], as the rear end packer member 120 expands, its outer surface comes into contact with the inner wall of the perforated hole 10, and the grout material in the rear end packer member 120 is cured. As it is, the rear end packer member 120 may maintain a state engaged with the inner wall of the perforation hole 10 .

At this time, one or more extended support members 130 are fitted to the pipe member adjacent to the rear end packer member 120 as shown in Figs. In this state, the outer surface of the rear end packer member 120 is blocked from the outside and unfolds outwardly in conjunction with the expansion of the rear end packer member 120 as shown in FIGS. 4 and 6 .

As such, the expanded support member 130 unfolded by the expansion of the rear end packer member 120 can maintain the unfolded state as in [Figs. 4 and 6] by the expansion force of the rear end packer member 120. do.

In addition, referring to [Fig. 7] to [Fig. 9], the extended support member 130 may include a base support member 131 and an expandable wing member 132.

The base support member 131 may preferably be formed in the form of a flat plate in the form of a disk, as shown in FIGS. 7 to 9 . In addition, the base support member 131 may have a through hole 131a through which the pipe member 110 passes in the central portion as shown in FIGS. 7 to 9 .

As a result, the base support member 131 is penetrated by the pipe member 110 as in [FIG. 3] to [FIG. 6] to the pipe member 110 as shown in [FIG. It can be erected and placed.

The expandable wing member 132 preferably has its one end on the edge of one side of the base support member 131 as in [Fig. 7] to [Fig. 9] to enable folding and expansion with respect to the base support member 131 can be connected

In addition, a plurality of extended wing members 132 may be arranged in connection with each other, preferably along the edge of the base support member 131 as shown in [Fig. 7] to [Fig. 9].

As a result, in a state in which the expandable wing member 132 is folded based on the base support member 131 as in [Fig. 7], the outer diameter portion formed by the plurality of expandable wing members 132 is the base support member 131. Located on the inner side of the outer edge of the, as in [Fig. 8] and [Fig. 9], in a state in which the expandable wing member 132 is expanded with respect to the base support member 131, the plurality of expandable wing members 132 are The outer diameter portion forming the base support member 131 is located outside the outer edge of the.

That is, in the state in which the extended wing member 132 is folded based on the base support member 131 as in [Fig. 7], when the grouting device slides into the perforation hole 10 of [Fig. 2], the rear end packer By maintaining the shape of completely enclosing the member 120, it is possible to completely protect the rear end packer member 120 from external force (eg, the collapse of the inlet portion of the hole or a sharp material on the inner wall of the hole).

In fact, in the state in which the perforation hole 10 is made obliquely as in [Fig. 2], sharp stone roots on the inner wall of the perforation hole 10 or local partial collapse of the corresponding position are frequent due to the nature of the ground 20 of an unspecified structure. can occur

In such a situation, the expansion support member 130 protects the rear end packer member 120 so that the rear end packer member 120 can operate properly, and in a natural state, the base support member 131 as shown in [Fig. ), it is preferable that the extended wing member 132 is configured to maintain the folded state.

As a result, in the process of the grouting device entering the inside of the perforation hole 10, the expandable wing member 132 surrounds the rear end packer member 120 as shown in Figs. 3 and 5, and the rear end packer member (120) can be protected from being broken in the inlet portion of the perforated hole (10).

That is, when a plurality of expansion support members 130 are disposed to face each other as in [FIGS. As each folded front end of the member 132 is disposed to abut against each other, external exposure of the rear end packer member 120 shown in FIGS. 3 and 5 may be blocked.

To this end, each of the expandable wing members 132 is preferably composed of a plurality of inner wing members 132a and a plurality of outer wing members 132b as in [Fig. 3] to [Fig. 6] and [Fig. 9]. it may be done

3 to 9, as each outer wing member 132b has one end connected to the front end of each inner wing member 132a, as in [Fig. 8] and [Fig. 9], a plurality of Four expandable wing members 132 may be implemented.

And, in the state in which the expandable wing member 132 is expanded based on the base support member 131 as in [Fig. And as in [Fig. 6], the packer protection device, which is the rear end of the grouting device, can effectively maintain the fixed state in the perforated hole 10 at the corresponding position.

On the other hand, the extended support member 130 is preferably between the rear end support member 170 and the rear end packer member 120, the rear end packer member 120 and the front end support member ( 160) may be disposed to face each other.

In addition, each extended support member 130 maintains the folded state obliquely toward the center of the rear end packer member 120 as in [Figs. 3] and [Fig. 5] in [Figs. It may be configured to expand the folded state in conjunction with the expansion of the rear end packer member 120 filled with the grout material as shown.

The rear end packer injection member 140 is made in the form of a hose, and is connected to the rear end packer member 120 as shown in [Fig. 3] to [Fig. 6]. 120) to the inner side.

The tip support member 160 may be fixed to the tip portion of the pipe member 110 adjacent to the injection pipe member 150 by, for example, screw coupling, as shown in FIGS. 3 to 6 .

And, as the rear end packer member 120 expands, the front end support member 160 presses the expansion support member 130 to the inside of the perforation hole 10 when the expansion support member 130 is perforated. It supports so as not to be pushed to the inside of the hole (10).

The rear end support member 170 may be fixed to the rear end portion of the pipe member 110 opposite to the front end support member 160, for example, by screwing as shown in FIGS. 3 to 6 .

The nipple connection member 180 connects the distal end of the pipe member 110 adjacent to the distal end support member 160 and the injection pipe member 150 in a nipple form as shown in FIGS. 3 to 6 .

Here, the nipple connection member 180 may be fixed to the front end of the pipe member 110 by, for example, screwing, and may also be fixed to the rear end of the injection pipe member 150 by screwing, preferably connected by welding. may be

In this way, as the front end of the pipe member 110 and the rear end of the injection pipe member 150 are interconnected through the nipple connecting member 180, the tunnel excavation work to remove the lower side of the 'ceiling scheduled line' on [Fig. 2] The lower part of the grouting device may be easily separated from the sign nipple connecting member 180 .

10: perforated hole
20: ground
110: pipe member
120: rear end packer member
130: extended support member
131: base support member
131a: through hole
132: extended wing member
132a: inner wing member
132b: outer wing member
140: rear end packer injection member
150: injection pipe member
151, 151': pressurized hole
160: tip support member
170: rear end support member
180: Nipple connection member
210: pressure region partition member
211: first area member
212: second region member
213: third region member
213a: communication hole
220: injection pipe injection member
261, 262: O-ring member
271, 272: watertight maintenance member
G: Compartment space

Claims (7)

a hollow pipe member 110 having a predetermined length located at the rear end of the grouting device inserted into the drilling hole with respect to the drilling hole that is drilled obliquely in the upward direction;
a rear end packer member 120 that is fitted to the outer surface of the pipe member and expands according to the filling of the grout material on the inside thereof;
One or more pieces are fitted into the pipe member adjacent to the rear end packer member and are folded obliquely toward the center of the cross-section of the pipe member to block the outer surface of the rear end packer member from the outside and interlock with the expansion of the rear end packer member an extended support member 130 that extends outward;
a rear end packer injection member 140 in the form of a hose that interfaces with the injection of grout material into the rear end packer member as it is connected in communication with the rear end packer member;
Injection that is formed long to be inserted into the perforation hole, is made in the form of a hollow pipe, a plurality of pressing holes 151 and 151 ' penetrating the inside and outside of its body are formed, and its rear end is connected in communication with the front end of the pipe member tube member 150;
a tip support member 160 fixed to the tip portion of the pipe member adjacent to the injection pipe member by fitting;
a rear end support member 170 fixed to a rear end portion of the pipe member opposite to the front end support member by fitting;
a nipple connecting member 180 for connecting the distal end of the pipe member adjacent to the distal support member and the injection pipe member in a nipple shape;
A first region member 211 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 212 engaged with the inner wall of the member and the first and second region members are interconnected, but a space communicating with the pressing hole (hereinafter referred to as a 'compartment space') is provided between the injection pipe member and the second region member 212. a pressing region partition member 210 comprising a third region member 213 formed in the ;
an injection pipe injection member 220 inserted into the injection pipe member through the pressure region partition member while communicating with the pipe member and injecting a grout material into the interior of the injection pipe member and the partition space;
Grouting device having a packer protection device comprising a.
The method according to claim 1,
The extended support member 130,
a base support member 131 formed in the form of a flat plate and penetrating through the pipe member to stand up against the pipe member;
When one end of the base support member is connected to the edge of one side of the base support member so as to be foldable and expandable with respect to the base support member, a plurality of them are arranged adjacently along the edge of the base support member and are folded based on the base support member an expandable wing member 132 disposed to surround the outside of the rear end packer member so as to block external exposure of the rear end packer member;
Grouting device having a packer protection device, characterized in that it comprises a.
3. The method according to claim 2,
The extended support member 130,
The rear end packer member is disposed to face each other between the rear end support member and the rear end packer member, and between the rear end packer member and the front end support member, respectively, and maintains an obliquely folded state toward the center of the rear end packer member. Grouting device with a packer protection device, characterized in that configured to expand the folded state in conjunction with each other.
4. The method according to claim 3,
Packer protection device, characterized in that the third region member 213 has an outer edge formed by the cross section of the first region member and is smaller than the outer edge formed by the cross section of the second region member. A grouting device having a.
a hollow pipe member 110 having a predetermined length located at the rear end of the grouting device inserted into the drilling hole with respect to the drilling hole that is drilled obliquely in the upward direction;
a rear end packer member 120 that is fitted to the outer surface of the pipe member and expands according to the filling of the grout material on the inside thereof;
One or more pieces are fitted into the pipe member adjacent to the rear end packer member and are folded obliquely toward the center of the cross-section of the pipe member to block the outer surface of the rear end packer member from the outside and interlock with the expansion of the rear end packer member an extended support member 130 that extends outward;
a rear end packer injection member 140 in the form of a hose that interfaces with the injection of grout material into the rear end packer member as it is connected in communication with the rear end packer member;
a distal end support member 160 fixed to the distal end portion of the pipe member adjacent to the grouting device by fitting;
a rear end support member 170 fixed to a rear end portion of the pipe member opposite to the front end support member by fitting;
a nipple connecting member 180 for connecting the grouting device to the front end of the pipe member adjacent to the end support member in a nipple shape;
Packer protection device for the grouting device comprising a.
6. The method of claim 5,
The extended support member 130,
a base support member 131 formed in the form of a flat plate and penetrating through the pipe member to stand up against the pipe member;
When one end of the base support member is connected to the edge of one side of the base support member so as to be foldable and expandable with respect to the base support member, a plurality of them are arranged adjacently along the edge of the base support member and are folded based on the base support member an expandable wing member 132 disposed to surround the outside of the rear end packer member so as to block external exposure of the rear end packer member;
Packer protection device for the grouting device, characterized in that it comprises a.
7. The method of claim 6,
The extended support member 130,
The rear end packer member is disposed to face each other between the rear end support member and the rear end packer member, and between the rear end packer member and the front end support member, respectively, and maintains an obliquely folded state toward the center of the rear end packer member. Packer protection device for a grouting device, characterized in that configured to expand their folded state in conjunction with each other.

Images