CN110300826B - Duct piece, duct piece assembly and grouting device - Google Patents
Duct piece, duct piece assembly and grouting device Download PDFInfo
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- CN110300826B CN110300826B CN201880008970.2A CN201880008970A CN110300826B CN 110300826 B CN110300826 B CN 110300826B CN 201880008970 A CN201880008970 A CN 201880008970A CN 110300826 B CN110300826 B CN 110300826B
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- injection pipe
- pipe member
- injection
- close contact
- screw
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
Abstract
The invention provides a duct piece, a duct piece assembly and a grouting device. The duct piece includes: the duct piece main body is made of concrete materials and is provided with a filling hole in a penetrating mode; and a grouting device including an injection pipe member inserted into the injection hole and having a hollow penetrating therethrough, and a backflow prevention member attached to the injection pipe member to move the fluid in one direction, and to open the injection pipe member when the filling material is injected, thereby blocking backflow of the fluid in a direction opposite to the direction in which the filling material is injected.
Description
Technical Field
The present invention relates to a duct piece, a duct piece assembly, and a grouting device, and more particularly, to a duct piece, a duct piece assembly, and a grouting device having a backflow prevention function.
Background
In general, in order to excavate a tunnel or install an underground structure below a structure located above a fragile ground surface, it is necessary to construct a tunnel on a rock formation or a solid ground layer, or in the case of a fragile ground surface, to perform a grouting method before excavating the tunnel, thereby securing stability of the excavated surface by blocking ground water contained in the ground surface and preventing collapse and overbreak of the excavated surface.
When a tunnel is excavated, the excavation area is larger than the outer diameter of the segment, so that the segment is easily connected, and the segment is immediately connected while being excavated. After the connection is completed, a space is formed on the back surface of the segment, and a grouting method is performed to reinforce the space on the back surface of the tunnel, and at this time, a filling material is used for filling and reinforcing, and the filling material is filled with a liquid filling material mixed with various mixed materials or a mortar, concrete or other particles having viscoplasticity required for the specification and the execution function of the formation of the improved object according to the surface condition and the purpose.
In the case of performing the post-grouting of the tunnel wall, a grouting apparatus is used to pour a filler, and conventionally, an outer pipe is inserted into a punched hole formed in a fragile ground surface, and then the filler is poured into an inner pipe coupled to the inside of the inserted outer pipe.
The conventional water grouting apparatus is provided with a prevention cover which forms a conical 4-segment body in order to prevent pressurized groundwater acting on the back surface of the tunnel from flowing into the tunnel while injecting a filler from the inner end of the inner pipe.
However, in the case of the conventional apparatus, the inner pipe cannot sufficiently receive the water pressure acting underground, and therefore, after the construction of the tunnel is completed, the underground water flows back to the surface of the segment, and preventive work is added during the operation of the tunnel, and the life of the structure is shortened. Further, when the grout is injected, the 4-divided surfaces of the inner pipe are hardened until the backfill of the back surface of the tunnel is completely finished, so that the divided surfaces are not completely sealed after the injection, and the grout worker is not easy to perform the injection work, and therefore, the grout is usually removed after the curing time of about 2 days without inserting the inner pipe. Accordingly, the grout material flows out to the inside of the tunnel of the grouting apparatus, the cover cannot be closed, or water leakage occurs.
Therefore, there is a need for a duct piece having a grouting device that can prevent backflow of groundwater from the ground surface on the back of a tunnel by completely sealing the duct piece by recovering and blocking a portion from which a filler is discharged after the filler is injected.
Disclosure of Invention
Technical problem to be solved by the invention
In order to solve the above problems, the present invention provides a segment, a segment assembly and a grouting apparatus which can reduce grouting work in tunnel construction work and automatically block backflow of ground water and backfill mortar concrete as a filling material after injection.
Further, the present invention provides a duct piece, a duct piece assembly, and a grouting device, in which a backflow prevention function of the grouting device is further enhanced by blocking the backflow for the first time by a backflow prevention member, blocking the backflow for the 2 nd time by a sealing member, and blocking the backflow for the 3 rd time by a plug member after the filling material is injected.
Technical scheme for solving problems
In order to achieve the above object, a duct piece according to the present invention includes: the duct piece main body is made of concrete materials and is provided with a filling hole in a penetrating mode; and a grouting device including an injection pipe member inserted into the injection hole and having a hollow penetrating therethrough, and a backflow prevention member attached to the injection pipe member to move the fluid in one direction, and to open the injection pipe member and block backflow of the fluid in a direction opposite to a direction in which the filling material is injected, when the filling material is injected.
Further, according to the segment assembly of the present invention, a plurality of segments are joined to each other, and the segment includes: the duct piece main body is made of concrete materials and is provided with a filling hole in a penetrating mode; and a grouting device including an injection pipe member inserted into the injection hole and having a hollow penetrating therethrough, and a backflow prevention member attached to the injection pipe member to move the fluid in one direction, and to open the injection pipe member and block backflow of the fluid in a direction opposite to a direction in which the filling material is injected, when the filling material is injected.
Further, the grouting device of the present invention includes: an injection pipe member having a hollow portion formed therethrough; and a backflow prevention member attached to the injection pipe member to move the fluid in one direction, and to open the injection pipe member when the filler is injected to block the backflow of the fluid in a direction opposite to the direction in which the filler is injected.
Effects of the invention
According to the segment of the present invention, since the grouting means for automatically blocking the reverse flow is formed in the segment body as described above, the grouting work can be simplified in the tunnel work, and the reverse flow of the ground water and the filling material, i.e., the backfill mortar concrete, after the injection can be automatically blocked.
Further, according to the present invention, the mobility and sealing force of the backflow prevention member are improved, and thus the function of blocking the backflow of groundwater and the watertight function are enhanced.
Further, according to the present invention, after the filler is injected, the backflow is blocked for the first time by the backflow preventing member, the backflow is blocked for the 2 nd time by the sealing member, and the backflow is blocked for the 3 rd time by the plug member, whereby the backflow preventing function of the grouting device can be further enhanced.
Drawings
FIG. 1 is an exploded perspective view of a segment assembly according to the present invention;
FIG. 2 is an exploded perspective view of a segment according to the present invention;
FIG. 3 is a partially exploded cross-sectional view of a grouting device suitable for use in the present invention;
FIG. 4 is an enlarged partial cross-sectional view of FIG. 3;
FIG. 5 is a front view showing a backflow prevention member applied to the present invention;
FIG. 6 is a perspective view showing a plug member suitable for use in the present invention;
FIG. 7 is a drawing showing a spanner plate suitable for use with the present invention;
fig. 8 (a) is a bottom view of a closed part of the present invention in which a trigger plate is formed, and fig. 8 (b) is a bottom view of a state in which a rubber cover is provided in the closed part;
FIG. 9 is a partial sectional view showing a portion of a segment of a tube provided with the grouting device of the present invention;
fig. 10 is a sectional view illustrating an operation of injecting a filling material through the grouting apparatus of the present invention;
FIG. 11 is a cross-sectional view showing a state where the sealing member and the plug member are provided after the filling with the filler is completed according to FIG. 10;
fig. 12 is a drawing showing another embodiment of an injection pipe member applicable to the present invention.
Detailed Description
Hereinafter, preferred embodiments according to the present invention are described in detail with reference to the accompanying drawings.
First, the embodiments described below are suitable for understanding the technical features of the segment and segment assembly and the grouting device according to the present invention. The embodiments described below are not intended to limit the technical features of the present invention, and various modifications can be made within the technical scope of the present invention.
Referring to the embodiment illustrated in fig. 1 and 2, the segment assembly 10 according to the present invention may arrange a plurality of segments 100 to be connected to each other. Here, the assembly method between the plurality of segments 100 is not limited, and various methods can be applied as long as the segments can be firmly assembled.
The segment 100 according to the present invention includes a segment body 200 and a grouting device 300.
For example, each segment 100 may be applied to a precast concrete (hereinafter, referred to as PC) segment 100 that is fabricated in advance in a factory and then assembled on site, but is not limited thereto.
The segment body 200 is made of concrete and has a pouring hole 210 formed therethrough. More specifically, the segment body 200 is made of concrete, and is manufactured by casting and curing concrete. When used in a tunnel, the segment body 200 is formed in an arc shape, and the plurality of segments 100 are assembled to form an arc shape. In addition, the segment body 200 may be installed on a wall surface of a tunnel when used as the tunnel. However, the tube sheet 100 according to the present invention may be used for purposes other than tunnels.
The grouting device 300 may be preset on the segment body 200 when the segment 100 is manufactured by pouring concrete in a factory. In more detail, reinforcing bars are assembled on the segment mold, and concrete is poured and cured after the grouting device 300 is provided, so that the grouting device 300 is buried in the segment body 200. At this time, a pouring hole 210 is formed at a portion through which the grouting device 300 penetrates.
Therefore, in the case of performing the tunneling operation, it is not necessary to additionally perform the operation of perforating the segment 100 or the like when grouting is performed between the segment body 200 and the inner surface of the tunnel excavation portion. However, the method of attaching the grouting device 300 to the segment body 200 is not limited thereto, and various modifications may be made as long as the grouting device 300 can be inserted into the injection hole 210.
The grouting device 300 includes an injection pipe member 310 and a reverse flow preventing member 330.
The injection pipe member 310 is inserted into the injection hole 210, and has a hollow portion formed therethrough. For example, in the illustrated embodiment, the injection tube member 310 is formed in a cylindrical shape.
The injection pipe member 310 may be made of a synthetic resin material, a high hardness rubber material, or a steel material to secure water tightness, but is not limited thereto.
The injection pipe member 310 is formed to be long in the longitudinal direction, and one side and the other side in the longitudinal direction are opened, and the filler (30, see fig. 10) is injected from the other side in the longitudinal direction, and the filler 30 is discharged from the other side, which is the opposite direction to the other side. Here, the other side of the filler pipe member 310 is the inner side of the tunnel, and one side of the filler pipe member 310 is the wall surface side of the excavated tunnel. The injected filler material 30 is used for backfill reinforcement for tunnel engineering.
The backflow prevention member 330 is installed at the injection tube member 310 such that the fluid moves in a single direction, and opens the injection tube member 310 when the filling material 30 is injected, thereby preventing the fluid of the filling material 30 from flowing backward in a direction opposite to the injection direction.
In more detail, the reverse flow preventing part 330 allows the fluid to flow only in a single direction from the other side to one side of the injection pipe part 310. Therefore, when the filler 30 is injected from the other side to the one side direction, the injection pipe member 310 is opened, and when the filler or the ground water is reversely flowed from the one side to the other side direction by the completion of the injection or the external force, the injection pipe member 310 is blocked to prevent the reverse flow.
As described above, according to the segment 100 of the present invention, the grouting means 300 capable of automatically blocking the reverse flow is installed in the segment body 200, and thus, the grouting work can be simplified in the tunnel work, and the reverse flow of the ground water after injection and the backfill mortar concrete as the filling material is blocked.
The inner circumferential surface of the injection pipe member 310 includes a screw portion 313 and a movable portion 314.
A screw part thread may be formed at the screw part 313 (S1). This enables the screw connection with the sealing member 350 and the plug member 370.
The movable portion 314 is formed on one side of the injection pipe member 310 of the screw portion 313, and is provided with a backflow prevention member 330. In more detail, the movable portion 314 is a portion where the screw thread (S1) is not formed, and is a portion where the backflow prevention member 330 is provided to ensure movement during operation.
The injection pipe member 310 is also formed with a close contact portion 317. Also, the injection tube member 310 may further include a protrusion 316. That is, the movable portion 314 of the injection pipe member 310 is formed with a contact portion 317 and a protrusion 316.
The contact portion 317 is formed in a tubular shape inside the movable portion 314, has an inner peripheral surface extending from the screw portion 313 and having a step toward the center of the injection tube member 310, and contacts the backflow prevention member 330 tightly when the injection tube member 310 is closed by the backflow prevention member 330.
The protrusion 316 is formed at the guard portion between the movable portion 314 and the screw portion 313, protrudes inward from the inner circumferential surface of the injection tube member 310, and is coupled to the close contact portion 317. Here, the protrusion 316 may protrude annularly from the inner circumferential surface of the injection pipe member 310 in the circumferential direction.
For example, in the inner peripheral surface of the injection pipe member 310, a protrusion 316 protrudes toward the center axis of the injection pipe member 310 at the guard portion between the movable portion 314 and the screw portion 313, and a close contact portion 317 is formed to extend from the tip of the protrusion 316 toward one side of the injection pipe member 310. That is, the protruding portion 316 and the abutting portion 317 are formed inside the movable portion 314, and extend from the screw portion 313 in a shape having a reduced diameter and a step.
Referring to fig. 4 and 5, the backflow prevention member 330 includes a check valve 331, a connection spring 333, and a mounting ring 335.
The check valve 331 is attached to the movable portion 314, and when the filling of the filler 30 is completed, it is in close contact with the contact portion 317, and can block the filling pipe member 310. Here, the shape of the check valve 331 is not limited to the illustrated embodiment, and various modifications can be made. The material of the check valve 331 may be rubber, but is not limited thereto.
The mounting ring 335 is coupled to the inner circumferential surface of the movable portion 314. More specifically, an insertion groove 315 is formed in an inner circumferential surface of the movable portion 314 so as to be recessed in the circumferential direction. The mounting ring 335 is formed in a ring shape, and the edge thereof is inserted into and coupled to the insertion groove 315 and fixed to the movable portion 314.
The connection spring 333 is fixed to the mounting ring 335, is coupled to the check valve 331, and elastically presses the check valve 331 against the abutting portion 317.
In more detail, the connection spring 333 includes: a fixing piece 333a inserted into a mounting hole 336 formed through the mounting ring 335; a hinge 333b connected to the fixing piece 333 a; the valve coupling piece 333c rotates about the hinge 333b and is coupled to the check valve 331. That is, the check valve 331 is fixed to the mounting ring 335 by means of the connection spring 333.
Thus, when the filler 30 is injected into the injection tube member 310, the check valve 331 rotates about the hinge 333b by the injection force to be spaced from the contact portion 317, and the injection tube member 310 is opened. After the filling material 30 is completely filled, the check valve 331 is in close contact with the contact portion 317 by the elastic restoring force of the connection spring 333, and the filler pipe member 310 is closed.
Accordingly, the check valve 331 of the backflow prevention member 330 according to the present invention is restricted from rotating by the contact portion 317, and is in contact with the contact portion 317 by the elastic force of the connection spring 333, thereby further enhancing the function of blocking the backflow of groundwater or the like and the watertight function.
Also, the grouting apparatus 300 according to the present invention may further include a sealing member 350. The sealing member 350 is inserted into the injection tube member 310 to seal the hollow space. Here, the sealing member 350 seals the filler 30 together with the backflow preventing member 330 after the filling is completed, the filling pipe member 310.
The sealing member 350 is formed in a partial region of the screw portion 313, and one end portion thereof is in close contact with the protrusion 316. For example, the length of the sealing member 350 is about 30 to 40% of the length of the inlet pipe member 310, but is not limited thereto.
In detail, the closing member 350 includes: a screw coupling portion 351, an insertion portion 352, and a 1 st sealing member 353.
The screw connection portion 351 is formed with a screw connection portion thread S2 on the outer peripheral surface and is screwed to the screw portion 313 of the injection tube member 310. That is, the sealing member 350 is inserted into the injection pipe member 310, and is coupled to the injection pipe member 310 by screwing the screw coupling portion 351 to the screw portion 313.
The insertion portion 352 can be inserted into the inner peripheral surface of the close contact portion 317. The 1 st seal member 353 is inserted into the outer peripheral surface of the insertion portion 352 and is in close contact with the protrusion 316. Here, the 1 st sealing member 353 may have a rubber O-ring shape, but is not limited thereto.
Accordingly, the sealing member 350 is inserted into the injection tube member 310, screwed, and moved from the other side to one side of the injection tube member 310, and then brought into close contact with the protrusion 316 at the screw portion 313 and the guard portion of the movable portion 314. At this time, the sealing force of the sealing member 350 is further improved by the 1 st sealing member 353 closely contacting the protrusion 316. The sealing member 350 serves to block the backflow at the 2 nd stage at the rear end of the backflow preventing member 330.
Also, referring to fig. 3, the grouting apparatus 300 according to the present invention may further include a cap member 320. The cover member 320 is formed at one end of the injection pipe member 310, and is broken when the filling material 30 is injected into the injection pipe member 310, and discharges the filling material 30 to one side of the injection pipe member 310.
The outer peripheral surface of the cap member 320 is formed with a cap member screw (S3) having a shape corresponding to the screw thread (S1) formed on the inner peripheral surface of the one end of the injection pipe member 310, and they are screwed together. The cover member 320 is made of a material (e.g., plastic) that can be easily broken by an operator, and is made with such a strength that the segment 100 is not broken when it is installed on the wall surface of the excavated tunnel. When the filler 30 is injected between the wall surface (excavation surface) of the tunnel and the segment 100, the cap member 320 can be broken by a hard rod formed at the tip of the injector 20. (refer to FIG. 10)
Also, the grouting apparatus 300 according to the present invention may further include a plug member 370. The plug member 370 serves to seal the other side of the filler pipe member 310. Here, the plug member 370 may be made of a rubber material having water-tightness, but is not limited thereto.
The coupling portion 380 is inserted into the injection pipe member 310, is screwed to the screw portion 313, and includes a tapered portion 381 having a diameter that becomes larger in a direction opposite to the direction of insertion into the injection pipe member 310.
Also, the coupling portion 380 may further include a 2 nd sealing member 382. The 2 nd sealing member 382 is inserted into the outer circumferential surface of the tapered portion 381 to seal between the injection pipe member 310 and the plug member 370. The 2 nd seal member 382 may be, for example, an O-ring made of a rubber material, and may be formed in two or more pieces.
The coupling portion 380 as described above can reinforce the air and water tightness between the injection pipe member 310 and the plug member 370 by means of the taper portion 381 and the 2 nd sealing member 382 coupled thereto, and minimize the breakage of the injection pipe member 310 by the 2 nd sealing member 382. The 2 nd sealing member 382 is formed at the rear ends of the backflow preventing member 330 and the sealing member 350, and blocks backflow of the groundwater for the third time when the injection pipe member 310 is sealed after the filling material 30 is injected.
The closed part 390 is coupled with the coupling part 380 and is formed to have a diameter larger than the outer diameter of the inlet pipe member 310. In detail, the sealing part 390 is formed integrally with the coupling part 380, is made of a rubber material, and is formed to have a larger diameter than the injection pipe member 310 while sealing the other side of the injection pipe member 310.
Also, in order to screw the coupling portion 380, the plug member 370 includes a wrench hole (H) penetrating the coupling portion 380 and the closing portion 390. In more detail, the plug part 370 is formed in a spanner bolt shape, and the spanner hole (H) may be a hole having a hexagonal or a letter (-) type cross-section. A hexagonal wrench is inserted into the wrench hole (H) and then tightened, so that the coupling portion 380 of the plug member 370 can be easily screwed to the screw portion 313 of the injection pipe member 310.
In more detail, the closing part 390 includes a stopper body, a rubber cover 392, and a spanner plate 393.
The stopper body is coupled to the coupling portion 380 and made of a rubber material, and a rubber cover 392 may cover the stopper body.
Referring to fig. 7, the trigger plate 393 is inserted between the plug body and the rubber cover 392, is formed in a metal plate shape, has a diameter larger than the outer diameter of the injection pipe member 310, and has a 1 st hole 394 communicating with the trigger hole (H) and a plurality of 2 nd holes 395 into which a part of the plug body is inserted.
In more detail, the spanner plate 393 is formed of a steel iron plate that is bonded to the rubber forming the plug member 370 when the plug member 370 is manufactured by molding. At this time, rubber is inserted into the plurality of 2 nd holes 395 formed in the spanner plate 393, whereby the coupling force between the spanner plate 393 and the plug main body can be increased.
Further, the spanner plate 393 has a diameter larger than the outer diameter of the filler pipe member 310, so that the contact surface with the rubber constituting the plug member 370 can be increased while securing the rigidity of the plug member 370, and the coupling force with the plug main body can be further increased. Fig. 8 (a) is a front view of the closing portion 390 showing a state where the trigger plate 393 is coupled to the stopper main body; fig. 8 (b) is a front view of the sealing part 390 in a state where the rubber cover 392 is coupled to fig. 8 (a).
A trigger hole (H) is formed in the plug body and the rubber cover 392, and the 1 st hole 394 of the trigger plate 393 may be penetrated in correspondence with the trigger hole (H).
Also, although not shown, the spanner plate 393 may further include a linear slot. The linear groove may be formed by a linear recess on a side facing the plug body.
Like the 2 nd hole 395 described above, the in-line groove is used to insert the rubber forming the plug member 370 into the in-line groove after the wrench plate 393 is engaged in the molding of the plug member 370. Thus, the coupling force between the spanner plate 393 and the closing part 390 is more improved, minimizing the occurrence of the spanner plate 393 collapsing or coming off from the stopper body when the stopper member 370 is assembled by a screw.
Further, referring to fig. 3 and 12, reinforcing ribs 312 are formed on the outer circumferential surface of the inlet pipe member 310 to improve the coupling force with the segment main body 200. A 1 st embodiment of stiffener 312 is illustrated in fig. 3, and a 2 nd embodiment of stiffener 312 is illustrated in fig. 12.
Referring to fig. 3 and 12, the reinforcing ribs 312 include a 1 st reinforcing rib 312b and a 2 nd reinforcing rib 312 a.
First, according to embodiment 1 of fig. 3, the 1 st reinforcing rib 312b is formed long in the longitudinal direction of the injection pipe member 310, and is partitioned into a plurality of pieces. At this time, the plurality of 1 st reinforcing ribs 312b are formed in parallel along the circumferential direction of the outer circumferential surface of the injection pipe member 310. Also, the 2 nd reinforcing rib 312a may be connected between the 1 st reinforcing ribs 312b, and formed perpendicular to the 1 st reinforcing rib 312 b.
Thus, the 1 st and 2 nd reinforcing ribs 312b, 312a that protrude are inserted into the segment body 200, and the joining force of the injection pipe member 310 with the segment body is enhanced. Further, the second reinforcing ribs 312a prevent ground water and the like from flowing into between the filler pipe member 310 and the segment main body.
Further, according to embodiment 2 of fig. 12, the 1 st reinforcing rib 312b is formed by dividing a plurality of injection pipe members 310 in the longitudinal direction, and includes a reinforcing rib groove 312c formed by cutting a part thereof. By inserting concrete or the like forming the segment main body into the reinforcing rib groove 312c, the coupling force between the heterogeneous material injection pipe member 310 and the segment main body is further enhanced, and the injection pipe member 310 can be controlled to prevent the penetration of groundwater along the straight flow path formed by the injection pipe member 310.
The 2 nd reinforcing ribs 312a are connected between the 1 st reinforcing ribs 312b, and are formed to be inclined at a predetermined angle in a direction perpendicular to the longitudinal direction of the inlet pipe member 310. That is, the 2 nd reinforcing rib 312a is formed obliquely by an angle other than a direction parallel to the 1 st reinforcing rib 312b and a direction perpendicular to the 1 st reinforcing rib 312 b.
Further, the 2 nd reinforcing rib 312a formed between a certain pair of the 1 st reinforcing ribs 312b may be arranged on a line not extending from the 2 nd reinforcing rib 312a between the adjacent pair of the 1 st reinforcing ribs 312 b.
Although not shown, the 2 nd reinforcing rib 312a shown in fig. 12 may be arranged on a line not extending and formed perpendicular to the 1 st reinforcing rib 312 b.
Thus, the 2 nd reinforcing rib 312a according to embodiment 2 has a longer length of the entire 2 nd reinforcing rib 312a than the 2 nd reinforcing rib 312a of embodiment 1, thereby more enhancing the adhesion force with the segment body of the heterogeneous material, and the 2 nd reinforcing rib 312a does not extend from one direction, and therefore, the penetration of groundwater can be more effectively prevented.
However, the shape of the outer circumferential surface of the filler pipe member 310 is not limited to the illustrated embodiment, and a stone pillar may be formed to enhance the coupling force with the segment main body 200. The unexplained reference numeral 311 denotes a main body of the injection pipe member 310, that is, an injection pipe main body.
Referring to fig. 9 to 11, a backfill process of a tunnel process using the segment 100 and the grouting device 300 according to the present invention will be described.
First, as in the example illustrated in fig. 9, the grouting device 300 (see fig. 2) is installed in advance when the segment 100 is manufactured, and the plurality of segments 100 are assembled and installed in an arc shape on the excavated surface of the tunnel (see fig. 1).
Then, as in the embodiment shown in fig. 10, the injection pipe member 310 is charged with the injection material 20, and the filling material 30 is charged after the check valve 331 is opened by the rod at the tip of the injection material 20 or the injected filling material 30. The filler 30 is injected between the back surface of the segment 100 and the excavation surface of the tunnel.
Referring to fig. 11, after the injection of the filler 30 is completed, the backflow prevention member 330 is restored to the original state by the restoring force of the connection spring 333, and the injection tube member 310 is closed. At this time, the check valve 331 is brought into close contact with the contact portion 317 by the pressing force of the connection spring 333, thereby strengthening the sealing force. Then, the sealing member 350 is inserted into the interior of the injection pipe member 310 to seal the injection pipe member 310 for the second time. The stopper member 370 is coupled to the other side of the filler pipe member 310 to hermetically seal the filler pipe member 310 for the 3 rd time.
Thus, even if the backflow prevention member 330 does not completely return to its original state, the backflow can be prevented by the sealing member 350, and even if groundwater has flowed in, the groundwater flowing back can be sealed by the 2 nd sealing member 382 of the plug member 370.
In the duct piece according to the present invention, since the grouting means for automatically blocking the reverse flow is formed in the duct piece body as described above, the grouting work can be simplified in the tunnel work, and the reverse flow of the ground water and the filling material, i.e., the backfill mortar concrete, after the injection can be automatically blocked.
Further, according to the present invention, the mobility and sealing force of the backflow prevention member can be improved, and the function of blocking the backflow of groundwater and the watertight function can be further improved. Further, according to the present invention, after the filler is injected, the backflow is blocked for the first time by the backflow preventing member, the backflow is blocked for the second time by the sealing member, and the backflow is blocked for the third time by the plug member, thereby further improving the backflow preventing function of the grouting apparatus.
While specific embodiments of the present invention have been described in detail, the spirit and scope of the present invention is not limited to the above-described characteristic embodiments, and various modifications and variations can be made by those skilled in the art without departing from the gist of the present invention described in the claims.
Claims (16)
1. A duct sheet, comprising:
the duct piece main body is made of concrete materials and is provided with a filling hole in a penetrating mode; and
a grouting device including an injection pipe member inserted into the injection hole and having a hollow penetrating therethrough, and a backflow prevention member attached to the injection pipe member to move the fluid in one direction, and to open the injection pipe member and block backflow of the fluid in a direction opposite to a direction in which the filling material is injected, when the filling material is injected;
the filling material is injected from the other side of the length direction of the injection pipe member and is discharged to the opposite direction of the other side, namely, one side,
an inner circumferential surface of the filler pipe part includes:
a screw portion formed with a screw thread of the screw portion, and
a movable portion formed in one side direction of the injection pipe member of the screw portion, to which the backflow prevention member is attached;
the injection tube member further includes a protrusion formed at the guard portion between the movable portion and the screw portion and protruding inward from the inner circumferential surface of the injection tube member, and a close contact portion extending from the protrusion to one side of the injection tube member so as to form a step from the screw portion, the close contact portion being in close contact with the backflow prevention member when the injection tube member is closed by the backflow prevention member;
the reverse flow prevention member includes: a check valve attached to the movable portion and configured to be brought into close contact with the close contact portion to block the injection pipe member after the injection of the filler is completed;
the reverse flow prevention member further includes:
a mounting ring coupled to an inner circumferential surface of the movable portion; and
and a connection spring fixed to the mounting ring and coupled to the check valve to elastically press the check valve against the contact portion.
2. The segment of claim 1,
the mounting ring is inserted into and combined with an insertion groove formed along the circumferential direction on the inner circumferential surface of the movable part,
the connection spring includes: a fixing piece inserted into a mounting hole formed through the mounting ring; the hinge is connected with the fixing piece; and a valve coupling piece rotating about the hinge and coupled to the check valve.
3. The segment of claim 1,
the grouting device further includes a sealing member inserted into the inside of the injection pipe member to seal the hollow.
4. The segment of claim 3,
the sealing member is formed in a partial region of the screw portion, and one end portion of the sealing member is in close contact with the protruding portion.
5. The segment of claim 4,
the sealing member includes:
a screw coupling portion having a screw coupling portion thread formed on an outer peripheral surface thereof and screwed to the screw portion of the injection pipe member;
an insertion portion inserted into an inner peripheral surface of the close contact portion; and
and a 1 st seal member inserted into an outer peripheral surface of the insertion portion and brought into close contact with the protruding portion.
6. The segment of claim 1,
the grouting device further includes a cover member formed at one side end of the injection pipe member, broken when the filling material is injected into the injection pipe member, and discharging the filling material to one side of the injection pipe member.
7. The segment of claim 1,
the grouting device further includes a plug member closing the other side of the injection pipe member.
8. The segment of claim 7,
the plug member further includes:
a coupling portion inserted into the injection pipe member, coupled to the screw portion by a screw, and including a tapered portion having a diameter that increases in a direction opposite to a direction of insertion into the injection pipe member; and
and a sealing part combined with the combining part to form a diameter larger than the outer diameter of the injection pipe component.
9. The tubesheet of claim 8,
the plug part includes a wrench hole penetrating the coupling part and the closing part to screw-couple the coupling part,
the closed section includes:
a plug body made of rubber and combined with the combining part;
a rubber cover covering the stopper main body; and
and a wrench plate inserted between the plug body and the rubber cap, having a plate shape of a metal material, having a diameter larger than an outer diameter of the injection pipe member, and having a 1 st hole communicating with the wrench hole and a plurality of 2 nd holes into which a part of the plug body is inserted.
10. The tubesheet of claim 9,
the spanner plate further comprises a linear groove formed by long concave in a linear shape on one surface facing the plug main body.
11. The segment of claim 1,
the injection pipe member includes a reinforcing rib formed to protrude on an outer circumferential surface.
12. The tubesheet of claim 11,
the reinforcing rib includes:
a 1 st reinforcing rib formed to be long from one side to the other side in a longitudinal direction of the inlet pipe member, and having a plurality of reinforcing rib grooves formed by cutting a part thereof; and
and a plurality of 2 nd reinforcing ribs connected between the plurality of 1 st reinforcing ribs and formed by inclining at a predetermined angle in a direction perpendicular to a longitudinal direction of the injection pipe member.
13. The tubesheet of claim 12,
the 2 nd reinforcing rib formed between a certain pair of the 1 st reinforcing ribs is arranged on a line not extending from the 2 nd reinforcing rib formed between the adjoining other pair of the 1 st reinforcing ribs.
14. The tubesheet of claim 11,
the reinforcing rib includes:
a 1 st reinforcing rib formed to be long in a longitudinal direction of the injection pipe member, and having a plurality of reinforcing rib grooves formed by cutting a part thereof; and
and a plurality of 2 nd reinforcing ribs connected between the plurality of 1 st reinforcing ribs and formed in a direction perpendicular to a longitudinal direction of the filler pipe member.
15. A segment assembly characterized in that,
a plurality of tube sheets are combined with each other to form,
and, the duct sheet includes:
the duct piece main body is made of concrete materials and is provided with a filling hole in a penetrating mode; and
a grouting device including an injection pipe member inserted into the injection hole and having a hollow penetrating therethrough, and a backflow prevention member attached to the injection pipe member to move the fluid in one direction, and to open the injection pipe member and block backflow of the fluid in a direction opposite to a direction in which the filling material is injected, when the filling material is injected;
the filling material is injected from the other side of the length direction of the injection pipe member and is discharged to the opposite direction of the other side, namely, one side,
an inner circumferential surface of the filler pipe part includes:
a screw portion formed with a screw thread of the screw portion, and
a movable portion formed in one side direction of the injection pipe member of the screw portion, to which the backflow prevention member is attached;
the injection tube member further includes a protrusion formed at the guard portion between the movable portion and the screw portion and protruding inward from the inner circumferential surface of the injection tube member, and a close contact portion extending from the protrusion to one side of the injection tube member so as to form a step from the screw portion, the close contact portion being in close contact with the backflow prevention member when the injection tube member is closed by the backflow prevention member;
the reverse flow prevention member includes: a check valve attached to the movable portion and configured to be brought into close contact with the close contact portion to block the injection pipe member after the injection of the filler is completed;
the reverse flow prevention member further includes:
a mounting ring coupled to an inner circumferential surface of the movable portion; and
and a connection spring fixed to the mounting ring and coupled to the check valve to elastically press the check valve against the contact portion.
16. A grouting device, characterized by comprising:
an injection pipe member having a hollow portion formed therethrough; and
a backflow prevention member attached to the injection tube member to move the fluid in one direction, and to open the injection tube member and block backflow of the fluid in a direction opposite to a direction in which the filler is injected when the filler is injected;
the filling material is injected from the other side of the length direction of the injection pipe member and is discharged to the opposite direction of the other side, namely, one side,
an inner circumferential surface of the filler pipe part includes:
a screw portion formed with a screw thread of the screw portion, and
a movable portion formed in one side direction of the injection pipe member of the screw portion, to which the backflow prevention member is attached;
the injection tube member further includes a protrusion formed at the guard portion between the movable portion and the screw portion and protruding inward from the inner circumferential surface of the injection tube member, and a close contact portion extending from the protrusion to one side of the injection tube member so as to form a step from the screw portion, the close contact portion being in close contact with the backflow prevention member when the injection tube member is closed by the backflow prevention member;
the reverse flow prevention member includes: a check valve attached to the movable portion and configured to be brought into close contact with the close contact portion to block the injection pipe member after the injection of the filler is completed;
the reverse flow prevention member further includes:
a mounting ring coupled to an inner circumferential surface of the movable portion; and
and a connection spring fixed to the mounting ring and coupled to the check valve to elastically press the check valve against the contact portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2018-0008915 | 2018-01-24 | ||
| KR1020180008915A KR102096488B1 (en) | 2018-01-24 | 2018-01-24 | Segment and segment assembly having the same and grouting apparatus |
| PCT/KR2018/005118 WO2019146845A1 (en) | 2018-01-24 | 2018-05-03 | Segment, segment assembly, and grouting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110300826A CN110300826A (en) | 2019-10-01 |
| CN110300826B true CN110300826B (en) | 2021-08-10 |
Family
ID=67395768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880008970.2A Active CN110300826B (en) | 2018-01-24 | 2018-05-03 | Duct piece, duct piece assembly and grouting device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6871394B2 (en) |
| KR (1) | KR102096488B1 (en) |
| CN (1) | CN110300826B (en) |
| WO (1) | WO2019146845A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102301170B1 (en) * | 2020-04-10 | 2021-09-13 | 유정건 | Waterproof structure of Drug Inlet for tunnel segment |
| KR102579407B1 (en) * | 2021-08-09 | 2023-09-14 | 정길영 | Waterproof structure of Drug Inlet for tunnel segment |
| CN114635723B (en) * | 2022-04-25 | 2023-10-03 | 四川公路桥梁建设集团有限公司 | Grouting plugging device for water leakage of water-rich tunnel |
| CN114878277A (en) * | 2022-05-27 | 2022-08-09 | 中铁隧道局集团有限公司 | Adjustable-density duct piece component and using method thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5713389A (en) * | 1995-08-24 | 1998-02-03 | Fmc Corporation | Check valve and check valve seat |
| JP3218185B2 (en) * | 1996-07-17 | 2001-10-15 | 株式会社クボタ | Injection hole plug for tunnel segment |
| JP2002295192A (en) * | 2001-03-29 | 2002-10-09 | Ishikawajima Constr Materials Co Ltd | Auxiliary tool for segment |
| JP2007177547A (en) * | 2005-12-28 | 2007-07-12 | Kajima Corp | Tunnel segment and tunnel structure |
| JP4880531B2 (en) * | 2007-06-28 | 2012-02-22 | メトロ開発株式会社 | Water stop structure of backfilling material injection hole |
| CA2645985C (en) * | 2007-12-14 | 2011-08-16 | Press-Seal Gasket Corporation | Grout and lifting tube |
| JP5088168B2 (en) * | 2008-02-22 | 2012-12-05 | 株式会社Ｊｖｃケンウッド | Cap that closes the hole in the housing |
| JP5188871B2 (en) * | 2008-05-02 | 2013-04-24 | 株式会社クボタ | Plugs, plug devices and segments |
| CN204477394U (en) * | 2015-01-29 | 2015-07-15 | 天津市佰世恒建筑工程有限公司 | Pile end grouting inlet non return check valve |
-
2018
- 2018-01-24 KR KR1020180008915A patent/KR102096488B1/en active IP Right Grant
- 2018-05-03 WO PCT/KR2018/005118 patent/WO2019146845A1/en active Application Filing
- 2018-05-03 JP JP2019541075A patent/JP6871394B2/en active Active
- 2018-05-03 CN CN201880008970.2A patent/CN110300826B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| KR102096488B1 (en) | 2020-04-02 |
| WO2019146845A1 (en) | 2019-08-01 |
| CN110300826A (en) | 2019-10-01 |
| JP2020507699A (en) | 2020-03-12 |
| JP6871394B2 (en) | 2021-05-12 |
| KR20190090258A (en) | 2019-08-01 |
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