KR102430894B1 - Pressure curtain with multi-wing for filling tube in underground disused pipe and underground disused pipe filling method using the same - Google Patents

Abstract

Disclosed are a multi-wing pressure curtain, and an underground structure inner filling method using the same. The multi-wing pressure curtain injects and solidifies a filling material using a multi-wing pressure curtain inside an underground structure to fill the inside of the underground structure without demolition of the underground structure such as an underground waste pipe and a duct which are main factors of ground subsidence and sinking.

Description

Multi-winged pressure curtain and method of filling underground structures using the same

The present invention relates to a multi-wing pressure curtain for filling underground structures. More specifically, without dismantling underground structures such as underground closures and pits, which are the main causes of ground subsidence and subsidence, including sink holes, a filler is injected and solidified inside the underground structure using a multi-wing pressure curtain to form an underground structure. It relates to a multi-wing pressure curtain for filling in and to a method for filling an underground structure using the same.

Recently, the occurrence of ground subsidence and subsidence, including sink holes, is increasing in downtown areas of large cities such as Seoul.

These ground subsidences and subsidences are caused by various factors, and it has been shown that most recent ground subsidences and subsidences in Korea are mainly caused by damage to old water and sewer pipes or influences from nearby construction sites.

However, it can be called a closed underground pipe (an aged pipe buried in the ground) or a common area that has not been demolished as it has been replaced with a new pipe that has the inherent risk of ground subsidence as much as the aging water and sewer pipe.

For example, when replacing an aging water and sewer pipe, the existing water and sewage pipe must be removed and a new pipe installed, but demolition costs are additionally incurred, it is difficult to reprocess the existing water and sewage pipe, which is construction waste, and the demolition work takes a long time. Because there are several problems, such as complaints,

In the actual replacement of old water and sewage pipes, it is realistic to replace the old pipes by changing the pipe route and building a new pipe while leaving the existing water and sewage pipes as they are.

Due to this, it is estimated that thousands of kilometers of closed underground pipes are left unattended in the underground of major downtown areas in Korea. situation that can be

Therefore, in order to prevent ground subsidence due to underground closure, it is essential to collect information about underground closure, which does not even know the exact location of the burial. It is necessary, but realistically, it is impossible to remove all of the underground closures with the possibility of ground subsidence, so a more realistic alternative is needed.

Figure 1a is a construction example of filling the cavity of the underground using the conventional filling bag (1).

That is, the underground cavity may be a closed underground pipe, a water supply and sewer pipe, etc., and the filling bag 1 is positioned through a perforated hole communicating vertically with these cavities, and the filling material (mortar) is placed inside the filling bag 1 from the ground. etc.) and it can be seen that the cavity can be filled by expanding it.

Figure 1b is an exemplary view of the concrete filling method of the conventional water supply pipe (11).

That is, in the eco-friendly preservation method of the waste water pipe that is permanently maintained after the replacement of the old water pipe 11,

Inserting the injection hose 65, the air hose 75, and the wire rope 90 in the opposite direction to the concrete injection inside the waste water pipe and installing the injection unit 20 by connecting;

When the filled concrete 22 is injected into the waste water pipe 11 through the injection hose 65 at high pressure from the mortar pump 60, the injection unit 20 advances and the air hose 75 inside the waste water pipe 11 ) step in which the filled concrete 22 is injected in an embedded state;

The air hose 75 expands by supplying compressed air to remove the cavity 25 caused by the subsidence of the filled concrete 22 on the waste water pipe 11, and the cavity is removed;

After the filled concrete 22 is cured, the compressed air is removed from the air hose 75 and the air hose 75 is recovered to form a concrete structure in the form of a hollow pipe inside and finish the work. Concrete injection method for waste water pipe due to

At this time, in particular, the injection unit 20,

It is inserted into the waste water pipe 11 to pressurize and inject the filled concrete 22,

The front part is a cylindrical rubber material or a soft epoxy-based material, and has a funnel shape with a diameter gradually decreasing from the filling direction to the injection direction, and the induction part 21 is configured to facilitate advancement in the injection direction,

A funnel-shaped groove is formed on the side where the filled concrete 22 is in contact with the inner circumferential surface in the injection direction gradually narrowing to the center, so that when the filled concrete 22 is injected under pressure, the pressing force is smoothly transmitted to the injection unit 20. , it can be seen that the buffer support 24 with wheels is installed to facilitate movement of the inner peripheral surface of the waste water pipe 11 and fixing the position of the central part.

That is, it can be seen that a funnel-shaped inlet 20 that can be filled while moving using a filling bag and filling pressure is introduced as a means for filling the conventional underground structure in the form of a tube.

At this time, if the filling bag is not used, considering that the filling material may leak to the outside through the damaged part due to cracks in the underground structure, it can be seen that the filling material must be injected after the filling bag is inserted into the underground structure,

Even if the funnel-shaped inlet 20 is applied when injecting the filler at high pressure into the filling bag, the simple funnel shape has a problem in that the filler leaks to the rear of the inlet. will do

Republic of Korea Patent No. 10-0838602 (Title of the invention: concrete injection method of waste water pipe due to replacement of old water pipe, publication date: June 16, 2008) Japanese Patent Laid-Open No. 2010-242468 (Title of the invention: bag filling method of joint landfill, publication date: October 28, 2010)

Accordingly, the present invention has a high probability of loss when injecting filler material into the closed underground pipe as it is, for example, through cracks and breakages generated in the underground closed pipe as an underground structure, a small-diameter connecting branch pipe, etc., and if the filling density is not secured, the cavity inside the closed pipe This can cause a second risk of subsidence, so it is possible to tightly fill the filler material inside the underground structure, and to provide a multi-wing pressure curtain that can prevent filler loss and backflow and a method for filling the underground structure using the same. It is a technical problem to be solved.

In addition, it is possible to secure sufficient fluidity without lowering the viscosity of the filler and secure soil contamination safety, so that it is more eco-friendly and can secure construction. Provides a multi-wing pressure curtain and a method for filling underground structures using the same is a technical problem to be solved.

In addition, geotextile is used as a filling bag, but the material is impermeable, there is no loss of filler, and the solidification surface of the filler is good to ensure usability sufficiently, and it is easy to manufacture by sewing. It is a technical task to solve the provision of the structure filling method.

In addition, it is a technical task to solve the provision of a multi-wing pressure curtain that can be constructed more stably and quickly using transportation equipment including vehicles capable of producing and constructing fillers and a method for filling underground structures using the same. .

In order to achieve the above technical problem, the multi-wing pressure curtain of the present invention is inserted into the filling bag installed inside the underground structure, and the filling material supplied using the injection pipe fills the filling bag to fill the underground structure. In the curtain, the multi-winged pressure curtain includes: a fallopian tube formed in the form of a conical tube of which one side gradually decreases in diameter toward the other side; and a plurality of wing plates in the form of vertical plates spaced apart from the outer circumferential surface in the rear of the fallopian tube with a diameter equal to the diameter of one side of the fallopian tube; including, the fallopian tube and the plurality of wing plates are manufactured by integrating the fallopian tube by injection molding and manufacturing the same as one side of the fallopian tube A plurality of wing plates formed to be spaced apart in diameter are made to be in close contact with the inner surface of the filling bag.

In order to achieve the above technical problem, the method for filling the underground structure using the multi-wing pressure curtain of the present invention is (a) mounted on a mixer for mixing, mixing, and injecting the filler, moving to the site, and injecting the filler through the injection pipe. Moving to the site by having a transport equipment including a vehicle for supplying the wing pressure curtain; (b) a fallopian tube formed in the form of a conical tube whose diameter is gradually reduced toward the other side; and a plurality of wing plates in the form of vertical plates spaced apart from the outer circumferential surface in the rear of the fallopian tube with a diameter equal to the diameter of one side of the fallopian tube; including, the fallopian tube and the plurality of wing plates are manufactured by integrating the fallopian tube by injection molding and manufacturing the same as one side of the fallopian tube providing a plurality of winged pressure curtains that allow a plurality of wing plates formed to be spaced apart in diameter to be in close contact with the inner surface of the filling bag; and (c) inserting the multi-winged pressure curtain into the filling bag installed inside the underground structure, and filling the filling bag through the multi-winged pressure curtain with the filling material supplied using the injection pipe to fill the underground structure; will be included.

According to the present invention, it is possible to sufficiently achieve the filling density in the pipe due to the filler by reflecting the internal state (breakage, deposition) of the underground closed pipe, to prevent the loss of the filler injected into the multi-winged pressure curtain, and to prevent the backflow after the construction of the filler Therefore, it is possible to provide a multi-wing pressure curtain that can handle underground structures stably and a method for filling underground structures using the same.

In addition, with the adoption of a multi-wing pressure curtain, even when injecting (spraying) the filler at high pressure in the filling bag, it is possible to effectively prevent the backflow of the filler material without causing leakage to the outside of the underground structure, so that the filling density of the underground structure can be sufficiently secured. It is possible to provide a multi-winged pressure curtain and a method for filling underground structures using the same.

In addition, it is possible to prevent soil contamination by using eco-friendly materials such as reduced slag and fly ash as a filler, and while using a concrete material as a binder, a multi-winged pressure curtain that can effectively control low flow, suppression of strength increase, and shrinkage, and It is possible to provide a method for filling the underground structure using this.

In addition, as a filling bag, for example, PP fabric and PVC-coated geotextile can be manufactured to have a certain diameter by a simple sewing operation, so that water impermeability is ensured and the solidification surface condition is good due to filler injection, so that loss can be effectively prevented. It is possible to provide a wing pressure curtain and a method for filling an underground structure using the same.

In addition, the multi-winged pressure curtain can effectively control the backflow by preventing outflow of the filler material, and for example, the multi-winged pressure curtain that can sufficiently secure elasticity and adhesion by manufacturing the EDPM material in a mold and compression method and in the underground structure using the same It becomes possible to provide a filling method.

In addition, it is possible to provide a multi-wing pressure curtain that can improve workability and precision by providing a vehicle-mounted construction transport device equipped with a filler precise mixing, mixing amount and supply amount control, and a liquid thickener supply line, and a method for filling underground structures using the same. do.

Figure 1a is a construction example of filling the cavity of the underground using a conventional filling bag
1b is an exemplary view of a concrete filling method of a conventional water supply pipe;
Figure 2a and Figure 2b is an example of the installation of the multiple wing pressure curtain of the present invention,
Figure 2c is an exemplary view of the filling bag of the present invention,
Figure 2d is an exemplary view of the transport construction equipment of the present invention,
Figure 3 shows a flow chart of the method for filling the underground structure using a multiple-wing pressure curtain of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

[ Multiple Wings Pressure Curtain ( 400 ) ]

Figures 2a and 2b are a multi-winged pressure curtain 400 installation example of the present invention, Figure 2c is an exemplary view of the filling bag 200 of the present invention, Figure 2d shows an exemplary view of the transport equipment 600 of the present invention did it

The multi-winged pressure curtain 400 of the present invention is based on FIG. 2A , for example, a underground closed pipe connecting the lower ends of the manholes A1 and A2 exposed to the ground as an underground structure 100 to each other. ,

It can be seen that the underground closing pipe is installed horizontally, and a damaged part has occurred, and the filling bag 200 is installed inside this underground closing pipe, but a multiple-wing pressure curtain 400 is installed inside the filling bag 200. After installation,

The multi-winged pressure curtain 400 moves from the closed left to the open right of the filling bag 200 through the injection pipe 500 connected to the multi-winged pressure curtain 400 while filling by the injection pressure (injection pressure). It can be seen that the filler 300 is injected (sprayed) into the bag 200 to fill the underground structure 100 .

Accordingly, the multi-winged pressure curtain 400 must have a function to prevent the filling material 300 from flowing backward to the left (rear) while moving to the left while in close contact with the inner surface of the filling bag 200,

The filling bag 200 should be able to be manufactured to have various diameters corresponding to the diameter of the underground closing pipe, and it should have elasticity to expand during the filling process because it has impermeability, and the filling material 300 is on the inner surface. Coagulation should not affect the coagulation state,

The filler 300 should be injected at high pressure to ensure fluidity while preventing material separation from occurring, and to be tightly filled in the underground closed pipe while solidifying inside the final filling bag 200, so as not to affect soil contamination must have effective materials and mixing ratios for transport and mixing;

The above underground structure filling construction uses the transportation equipment 600, but this transportation equipment 600 is easy to move by using a vehicle, and it is easy to mix, mix, and inject the filler 300 upon arrival at the site. Therefore, it can be seen that mobility, speed, and operability must be secured.

To this end, first looking at the multiple wing pressure curtain 400 of the present invention, as shown in FIGS. 2A and 2B , as shown in FIGS. 2A and 2B , in the form of a fallopian tube 410 , the multiple wing plates 420 are spaced apart from each other on the outer circumferential surface, but the fallopian tube 410 and the multiple wings As the plate 420 is integrally formed and serves to secure airtightness and durability,

Inserted into the filling bag 200, the filling material 300 is supplied at high pressure by the injection tube 500, and the filling material 300 is sealed in the front (left direction in the case of FIG. 2A) by the injection pressure. It is filled and allowed to solidify.

Accordingly, the multi-winged pressure curtain 400 is formed to include a fallopian tube 410 , a multi-wing plate 420 , and a rear connection tube 430 with reference to FIGS. 2A and 2B .

Referring to FIGS. 2A and 2B, the fallopian tube 410 is formed in a conical tube shape with one side gradually decreasing in diameter toward the other side, for example, by injection molding with EDPM material to ensure elasticity and durability. will make it possible

In addition, a rear connection pipe 430 is formed on the other side so that the injection tube 500 can be connected, and this rear connection tube 430 is easily connected to and separated from the injection tube 500 by the injection tube connector and the connection bracket. makes it possible

Since it is formed in a conical tube shape, the filler 300 supplied from the injection tube 500 is injected from the other side to one side to generate injection pressure, and through this, the multi-winged pressure curtain 400 is rearward (in the case of FIG. 2A ). Right), it will slide naturally and you will be able to move.

In addition, one outer peripheral surface serves to primarily prevent the filling material 300 injected at high pressure from leaking backward while in contact with the inflated filling bag 200 .

That is, since the outer peripheral surface of one side is closely contacted with the inner surface of the filling bag 200 while expanding to the inner surface of the filling bag by the high-pressure filler 300, it acts very effectively to prevent leakage.

Referring to FIGS. 2A and 2B , the multiple wing plate 420 has the same diameter as the diameter of one side of the fallopian tube 410 (it becomes a large diameter), and a number spaced apart from the outer circumferential surface toward the rear of the fallopian tube 410 . It is formed in the form of a direct plate and serves to stably fix the fallopian tube 410 to the inner surface of the inflated filling bag 200,

It is formed integrally with the fallopian tube 410 so as not to be deformed by the injection pressure,

To this end, the fallopian tube 410 and the multiple wing plate 420 are integrated by injection molding, and a plurality of the fallopian tubes 410 are spaced apart with the same diameter between one side and the other side and between the one side and the other side of the filling bag 200. It can be seen that it is formed so as to be in close contact with the side surface.

By the installation structure of the multiple wing plate 420, the filler 300 injected by high pressure is effectively prevented from leaking to the rear of the multiple wing pressure curtain 400, and it is possible to move effectively backward by the injection pressure. .

The rear connection pipe 430 is an inlet for connecting the injection pipe 500 for supplying the filler 300 to the inside of the multiple-winged pressure curtain 400 to the central part of the other side of the fallopian tube 410, as shown in FIGS. 2a and 2b. As a non-corrosive injection pipe connector is connected, the injection pipe connector is inserted into the rear connector pipe 430 by a connection bracket to be fixed.

That is, since the filler 300 by high pressure is connected to the rear of the multi-wing pressure curtain 400, they can be separated from each other by pressure, so that a reliable connection state is obtained using the injection pipe connector and the connection bracket for reliable connection and fixation. made to be able to obtain it.

Accordingly, it can be seen that the fallopian tube 410, the multi-wing plate 420, and the rear connection tube 430 constituting the multi-winged pressure curtain 400 are integrally injection-molded and manufactured.

Next, as for the underground structure 100, referring to FIG. 2A , an underground closed pipe connecting the lower ends of the manholes A1 and A2 exposed on the ground is exemplified. installed horizontally,

It can be seen that a damaged part has occurred, and after the filling bag 200 is installed in the underground closed pipe, a multi-winged pressure curtain 400 is installed inside the filling bag 200 .

Next, referring to FIG. 2c, the filling bag 200 should be set in a folded state on its inner surface when the underground structure 100 has a diameter of, for example, about 300 mm, and the filling material 300 is injected. As a result, a material manufactured to secure impermeability while expanding on the inner surface of the underground structure 100 is used.

Accordingly, the filling bag 200 of the present invention is a tube type with one side closed and the other side open by cutting and sewing while securing impermeability by coating PP fabric with PVC in a factory production method. The one manufactured with the desired diameter is used.

Accordingly, the inner surface of the PVC coating uses a geosynthetic tube body in which the injected filler 300 solidifies, the PP fabric does not change, and the filler 300 does not flow out due to the injection pressure to the outside.

Next, referring to FIGS. 2a and 2c, the filler 300 is mixed and mixed with the filler 300 in the field using the transport construction equipment 600 on the ground, and is injected at high pressure by a compressor, It is cement-based so that water binds and solidifies.

It is necessary to secure fluidity while preventing material separation while injecting at high pressure, and to fill the underground closed pipe tightly while solidifying inside the final filling bag 200, and not to affect soil contamination in the future, transport and mixing It should have effective materials and mixing ratios.

To this end, the present invention uses, for example, CA (calcium aluminate), OPC (falkrant cement), CSA (calcium aluminate cement), etc. as a binder, and uses a reduced slab or fly ash as an aggregate, but especially a liquid thickener ( Shrinkage reducing agent) is not mixed in advance and supplied separately so that low flow and strength can be effectively controlled, so that soil contamination is not affected.

Next, the injection pipe 500 includes a hose for injecting the filler 300 into the multi-wing pressure curtain 400, as shown in FIG. 2A, and is fixed to the rear connection pipe 430 of the multi-wing pressure curtain 400 It is possible to secure workability by simply inserting and fastening (using a male threaded connector) with a nipple method to the injection pipe connection (female thread formation).

The injection pipe 500 is connected to the transport equipment 600 and serves to supply the filler 300 .

Next, referring to FIG. 2d, the transport equipment 600 is equipped with a mixer for compounding, mixing, and injecting the filler 300 in the vehicle and moves directly to the site to inject the filler 300 into the injection pipe 500. It can be said that it is a vehicle for supplying the multi-winged pressure curtain 400 through.

That is, through a two-axis mixer in which a load cell and a flow meter are installed in the vehicle, the filler including water, binder, and aggregate is continuously mixed by a predetermined mixing method, and a separate liquid thickener is supplied while having a control unit through the touch screen. In this way, the worker can simply supply the filler in the field, and the filler 300 can be supplied to the multi-wing pressure curtain 400 at high pressure through the injection pipe 500 by the compressor to secure the workability.

[Method of filling the underground structure 100 using the multi-winged pressure curtain 400 of the present invention]

Figure 3 shows a flow chart of the method of filling the underground structure 100 using the multi-wing pressure curtain 400 of the present invention.

The method of filling the underground structure 100 using the multi-winged pressure curtain 400 is shown in FIGS. 2a to 2d,

A multi-wing pressure curtain 400 in the filling bag 200 previously positioned inside the underground structure 100 using the injection pipe 500 using the transport equipment 600 to the site where the underground structure 100 is located. set the

While injecting the filler 300 into the filling bag 200, the multi-winged pressure curtain 400 moves backward while the filler 300 is injected into the underground structure 100 and hardened while contaminated water from the underground structure 100 is removed. Fill it so that it does not leak,

It can be said that the method of recovering the multi-winged pressure curtain 400 and the injection tube 500 again.

Accordingly, as shown in FIG. 3 , the filler 300 is prepared for injection by using the transport equipment 600 to fill the underground closed pipe as the underground structure 100 .

The transport equipment 600 is equipped with a filler 300 material for injecting the filler 300, mixing water (water), a liquid thickener, and an injection pipe 500, and it moves quickly because it is mounted on a vehicle. and installation is possible.

In addition, the filling bag 200 is also mounted on the vehicle and prepared to be inserted and installed into the underground closed pipe through the manholes A1 and A2, and the filling bag 200 is cut and installed according to the diameter of the underground structure 100. The finished product is folded and ready for sewing.

Next, as shown in FIG. 3 , the filling bag 200 is set inside the underground structure 100 , and the multi-winged pressure curtain 400 is inserted into the filling bag 200 .

For example, the filling bag 200 first passes a guide line such as a wire into the underground structure 100 in a state in which both ends are opened, and the filling bag 200 is connected to one guide line to connect the guide line. The filling bag 200 is inserted and installed into the underground structure 100 using the .

Next, the multi-winged pressure curtain 400 is installed through one end of the opened filling bag 200, and the injection pipe 500 installed through the manhole A2 is installed in the multi-winged pressure curtain 400 on the other side of the filling bag. After installation in a state to extend through (200), one end is closed and sealed.

Next, as shown in FIG. 3, while injecting the filler 300 into the filling bag 200, the filling bag 200 is filled with the filler 300 by the multi-winged pressure curtain 400, and the multi-winged pressure curtain 400. will recover

That is, one side of the filling bag 200 is sealed toward the manhole A1, the other side is opened toward the manhole A2, and the multi-winged pressure curtain 400 is first located on one side of the filling bag 200. , when the filler 300 is supplied from the manhole A2 side to the multi-winged pressure curtain 400, the filling bag 200 expands by the injection pressure and comes into contact with the inner surface of the underground structure 100, otherwise injected into the rear The filler 300 does not leak to the rear,

The multi-winged pressure curtain 400 is moved to the rear, that is, toward the manhole A2 by the injection pressure, and can be recovered from the manhole A2.

Accordingly, when the other side of the filling bag 200 is sealed in the manhole A2 and the filler is injected into the final underground structure 100 and solidified, the final underground structure 100 is filled and closed.

These filler compounding, mixing, and supplying processes can all be controlled in the field by using the control unit 510 through the touch screen, so that the underground structure 100 can be closed more quickly and economically.

The foregoing description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

100: underground structure (underground closed pipe, etc.) A1, A2: manhole
200: filling bag 300: filling material
400: multiple wing pressure curtain 410: fallopian tube
420: multiple blade plate 430: rear connector
500: injection pipe 600: transport equipment

Claims (10)

A plurality of filling materials 300 that are inserted into the filling bag 200 installed inside the underground structure 100 and supplied using the injection pipe 500 fill the filling bag 200 so that the underground structure 100 is filled. In the wing pressure curtain 400,
The multi-winged pressure curtain 400,
Fallopian tube 410 formed in the form of a conical tube of which one side is gradually smaller in diameter toward the other side; and a plurality of wing plates 420 in the form of vertical plates spaced apart from one another on the outer circumferential surface of the fallopian tube 410 to the rear with the same diameter as the diameter of one side of the fallopian tube 410;
The fall tube 410 and the multiple wing plate 420 are integrally manufactured by injection molding, and the multiple wing plate 420 formed so as to be spaced apart with the same diameter as one side of the fallopian tube 410 is the inner surface of the filling bag 200 . A multi-wing pressure curtain that can be attached to the According to claim 1,
As an inlet for connecting the injection pipe 500 for supplying the filler 300 to the inside of the multiple-wing pressure curtain 400 to the central part of the other side of the fallopian tube 410, a rear connection pipe to which a non-corrosive injection pipe connector is connected ( 430) further comprising,
A multi-wing pressure curtain in which the fallopian tube 410, the multi-wing plate 420, and the rear connection pipe 430 constituting the multi-wing pressure curtain 400 are integrally injection-molded and manufactured. According to claim 1,
The underground structure 100,
It includes an underground closing pipe connecting the lower ends of the manholes A1 and A2 exposed on the ground to each other, and after installing the filling bag 200 inside the underground closing pipe, a multiple-wing pressure curtain 400 inside the filling bag 200 ) to be installed in a multi-wing pressure curtain. According to claim 1,
The filling bag 200,
Coating PP fabric with PVC to secure impermeability, and using a tube type with one side closed and the other side open by cutting and sewing, manufactured to a desired diameter by cutting and sewing by a bonding thread, but by the PVC coating The inner surface is a multi-wing pressure curtain including a geotextile tube body in which the PP fabric does not change while the injected filler 300 is solidified, and the filler 300 does not flow out by the injection pressure to the outside. According to claim 1,
The filler 300 is
It is injected at high pressure by a compressor by mixing and mixing the filler 300 on site using the transport construction equipment 600 on the ground. Calcium aluminate cement) as a binder, which uses reduced slab or fly ash as an aggregate, but is supplied separately without mixing a liquid thickener (shrinkage reducing agent) in advance to control low flow and strength. wing pressure curtain. According to claim 1,
The injection tube 500 is
It includes a hose for injecting the filler 300 into the multi-wing pressure curtain 400 and is simply a nipple method to the injection pipe connector (female thread) fixed to the rear connection pipe 430 of the multi-wing pressure curtain 400 A multi-wing pressure curtain that is connected to the transport equipment 600 and supplies the filler 300 in a way of inserting and fastening (male screw). 7. The method of claim 6,
The transport construction equipment 600 is,
A vehicle for supplying the filler 300 to the multi-winged pressure curtain 400 through the injection pipe 500 by moving to the site by mounting a mixer for compounding, mixing, and injecting the filler 300,
Through a two-axis mixer in which a load cell and a flow meter are installed in the vehicle, the filling material including water, binder, and aggregate is continuously mixed by a predetermined mixing method, and a separate liquid thickener can be supplied while having a control unit through a touch screen. A multi-wing pressure curtain that allows the operator to simply supply fillers on site. (a) a mixer for mixing, mixing, and injection of the filler 300 is mounted and moved to the site to supply the filler 300 to the multi-winged pressure curtain 400 through the injection pipe 500, including a vehicle A step of moving to the site by providing a transport facility (600);
(b) a fallopian tube 410 formed in the form of a conical tube whose diameter is gradually reduced toward the other side; and a plurality of wing plates 420 in the form of vertical plates spaced apart from one another on the outer circumferential surface of the fallopian tube 410 with the same diameter as one side of the fallopian tube 410; including, the fallopian tube 410 and the multiple wing plate ( 420) is a multi-wing pressure curtain that is manufactured integrally by injection molding so that a plurality of wing plates 420 formed to be spaced apart with the same diameter as one side of the fallopian tube 410 can be in close contact with the inner surface of the filling bag 200 having 400; and
(c) Inserting the multi-winged pressure curtain 400 into the filling bag 200 installed inside the underground structure 100, and the filling material 300 supplied using the injection pipe 500 is the multi-winged pressure curtain 400 ) through which the filling bag 200 is filled so that the underground structure 100 is filled. 9. The method of claim 8,
Inserting the filling bag 200 installed inside the underground structure 100 of the multi-winged pressure curtain 400 of step (c),
In a state in which both ends of the filling bag 200 are opened, the guide line including the wire is first penetrated into the underground structure 100,
The filling bag 200 is connected to one guide line so that the filling bag 200 is inserted and installed into the underground structure 100 using the guide line,
The multi-winged pressure curtain 400 is installed through one end of the opened filling bag 200, but the multi-winged pressure curtain 400 is provided with an injection tube 500 installed through the manhole A2 on the other side of the filling bag 200. ) to extend through, and then close one end to seal it. 10. The method of claim 9,
One side of the filling bag 200 is sealed toward the manhole A1, and the other side is opened toward the manhole A2.
The filling bag 200 expands by the injection pressure so as to come into contact with the inner surface of the underground structure 100, and the multi-winged pressure curtain 400 moves toward the manhole A2 rearward by the injection pressure, and the manhole (A2) A method of filling underground structures using a multi-wing pressure curtain that enables recovery from

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