KR20150130036A

KR20150130036A - Closed method for structures of aging tubular type

Info

Publication number: KR20150130036A
Application number: KR1020140057057A
Authority: KR
Inventors: 김봉섭; 이광용; 김운식
Original assignee: 주식회사 옥산
Priority date: 2014-05-13
Filing date: 2014-05-13
Publication date: 2015-11-23

Abstract

In the present invention, a filling hose is inserted through a PVC core pipe installed at an inclined position from the ground to the above structure in a non-excavated construction without construction of a work structure in a tubular structure including an old water supply pipe, tunnel, The present invention relates to an obsolete tubular structure closure method for injecting grout and hardening it to completely fill and stabilize the inside of the structure.
The obsolete pipe-type structure closing method according to the present invention is an obsolete pipe-type structure closing method in which a pipe is closed by injecting a filler into a pipe-like structure including an old and a wastewater pipe, tunnel and tunnel, Measuring the position of the structure and the oscillating position of the tilting machine; Fixing the tilting device to the tilting position of the tilting device at a predetermined angle toward the structure in a tiltable inclined stage; Connecting the drilling rod to the tilting machine and rotating the drilling rod to pivot the drilling rod to the tip of the outer circumference of the structure; Clay and clean the interior of the drilling rod connected to the tundish; Confirming the position of the structure through the inside of the drilling rod; Piercing the core in accordance with the outer diameter of the PVC core tube to form a core tube connection hole, and recovering the core of the structure from the outside; Applying an adhesive to an outer circumferential surface of a core of the recovered structure and applying the adhesive to an inner circumferential surface of a core tube connecting hole of the structure; Inserting and fixing the PVC core pipe at an angle from the ground to the core pipe connection hole of the structure; Drawing a lead wire through the insertion port of the PVC core tube and drawing the lead out to the outside of the air vent provided to communicate with the structure; A plurality of filling hoses are connected at the insertion port side of the PVC core pipe, and one end of the lead wire and the tip end of the filling hose are fixed, and then the other end of the lead wire is pulled out from the air vent so that the filling hose is inserted into the PVC core pipe ; &Lt; / RTI > Injecting a lightweight grout into the structure through the filling hose, and curing the filled grout to fill the interior of the structure.

Description

BACKGROUND ART [0002] Closed method for structures of aging tubular type,

The present invention relates to an obsolete pipe-type structure closing method, and more particularly, to a method of closing an obsolete pipe-type structure, and more particularly, to a pipe-type pipe- The present invention relates to an obsolete pipe-type structure closing method for inserting a filling hose capable of moving over a long distance through an inclined PVC core pipe and injecting a lightweight grout and curing the filling material to completely fill and stabilize the inside of the structure.

Generally, soil and underground water inflow into the inside of the structure due to soil and ground water pollution and damage caused by depression or corrosion when the underground structures such as old water and sewage pipes, tunnels and tunnels are left for a long time, Or other facilities, structural defects, or road breakage, etc., so that they must be repaired at great cost.

Conventionally, for example, aged water and sewage pipes are closed with sand or sand through manholes to prevent damage due to corrosion and breakage.

However, the conventional method of closing the aged water supply and sewage pipe has a problem that only the entrance of the manhole and the aged water supply and sewage pipe is filled with the earth or sand but the middle part is not filled and the middle part of the old water supply and sewage pipe can not be damaged.

As an embodiment for solving the above-described conventional problems, a method of closing an old sewage pipe is disclosed in Korean Patent Registration No. 10-0907434 (registered on July 7, 2009). 1A through 1C, there is a step of installing a blocking membrane 17 on both sides of the water supply and drainage pipe 15 connecting the manholes 13 embedded in the ground layer 11, A first filler made of soil or sand mixed with water is injected through a hose 21 passing through a barrier membrane 17 at one side entrance of the water pipe 15 by a high pressure pump 19, Forming a first filler layer (23) by selectively passing through the manhole (13) and filtering the soil or sand components to remain in the water supply and drainage pipe (15) and solidifying the same to form the first filler layer (23) And the through hole 25 for exposing the first filling layer 23 is formed by removing the high pressure pump 19 and drilling the ground layer 11 so as to include the upper portion of the middle portion of the water supply and drainage pipe 15 , A hose (29) is provided in the through-hole (25), and a high-pressure pump (27) A second filler made of mud mixed with concrete, foam concrete or water is injected and solidified on the first filling layer 23 of the water supply and drainage pipe 15 through the hose 29 to form a second filling layer 31 and the surface of the ground layer 11 is planarized by removing the hose 29 from the through hole 25 and filling the inside of the manhole 13 and the through hole 25 with soil And the third filling layer 33. This can fill the middle portion in order to prevent the old used water supply and drainage pipe 15 from being broken. However, it is possible to prevent the residual water remaining in the water supply and drainage pipe 15 The material is separated by the first filler layer 23 and the second filler layer 31 of the first filler layer 23 and the second filler material by the number of the first filler layer 23 and the second filler layer 31, The material is settled by the reduction of the bubbles, and a heavy material is introduced into the water supply and drainage pipe 15 A gap is formed at the upper end of the water supply and drainage pipe 15 to complete the filling state. When the old water supply and drainage pipe 15 is buried in a long distance, a work structure for injecting the filler is required There is a problem that economical efficiency is deteriorated due to a delay in construction period and an increase in construction cost.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a pipe- It is an object of the present invention to provide an obsolete tube-type structure closing method for inserting a filling hose capable of long-distance movement through a PVC core pipe, injecting a lightweight grout, and curing the filling hose to completely fill and stabilize the inside of the structure.

In accordance with the present invention, there is provided an obsolete tube-shaped structure closing method, which is a method of closing an old tube by injecting a filler into a tube-shaped structure including an old water and sewage pipe, a tunnel, The method comprising the steps of: measuring a position of the structure and an oscillating position of a tilting mechanism; Fixing the tilting device to the tilting position of the tilting device at a predetermined angle toward the structure in a tiltable inclined stage; Connecting the drilling rod to the tilting machine and rotating the drilling rod to pivot the drilling rod to the tip of the outer circumference of the structure; Clay and clean the interior of the drilling rod connected to the tundish; Confirming the position of the structure through the inside of the drilling rod; Piercing the core in accordance with the outer diameter of the PVC core tube to form a core tube connection hole, and recovering the core of the structure from the outside; Applying an adhesive to an outer circumferential surface of a core of the recovered structure and applying the adhesive to an inner circumferential surface of a core tube connecting hole of the structure; Inserting and fixing the PVC core pipe at an angle from the ground to the core pipe connection hole of the structure; Drawing a lead wire through the insertion port of the PVC core tube and drawing the lead out to the outside of the air vent provided to communicate with the structure; A plurality of filling hoses are connected at the insertion port side of the PVC core pipe, and one end of the lead wire and the tip end of the filling hose are fixed, and then the other end of the lead wire is pulled out from the air vent so that the filling hose is inserted into the PVC core pipe ; &Lt; / RTI > Injecting a lightweight grout into the structure through the filling hose, and curing the filled grout to fill the interior of the structure.

The ramp includes a support frame installed on the ground, a plurality of outer riggers mounted on both sides of the support frame to support the support frame, a lower end hinged to the support frame, An angle adjusting member hinged to a lower end of the support frame and hinged to an upper end of the support frame so as to be slidably hinged to the slide base; And a support member.

The filling hose injects a lightweight grout into the structure and leaves the required number of the hoses according to the distance to be poured.

The filling hose is made of polyethylene (PE).

The lightweight grout may be injected in any one of a system using a grouting pump and a system using an altitude difference, or may be filled in a mixed system.

The lightweight grout filling rate injected into the structure and cured is 95% or more of the tube inner diameter of the structure.

According to the obsolete tubular structure closure method according to the present invention, a tubular structure including tubular pipes, tunnels, and tunnels buried in an underground and obsolete is installed in a sloping manner from the ground to the structure by un- The filling hose is inserted through the core pipe and the lightweight grout is injected and cured to completely fill and stabilize the inside of the structure. Thus, the applicability is particularly excellent in the area with high traffic volume, and the filling hose is moved to the inside of the structure, The construction cost can be reduced and the construction period can be shortened. Therefore, it is excellent in economic efficiency, and it is possible to prevent depression and breakage of the old pipe-type structure and to prevent the ground subsidence, damage to the ground building or other facilities, It is possible to prevent road breakage or the like.

FIGS. 1A to 1C are process diagrams illustrating an aged water and sewer pipe closing method according to an embodiment of the present invention,
FIG. 2 is a schematic view showing an obsolete tubular structure closing method according to an embodiment of the present invention;
3 is a block diagram showing the flow of an obsolete tubular structure closing method according to the present invention,
FIG. 4 is a schematic view showing a ramp according to the present invention and a working method using the same,
5 is a view illustrating a fixing state of the PVC core tube according to the present invention,
6 is a view showing a state in which lead wires are installed according to the present invention,
FIG. 7 is a view showing an installation state of the filling hose according to the present invention,
8 is a view illustrating a state in which a lightweight grout is injected into a structure by a filling hose according to the present invention,
9 is a sectional view for explaining the filling rate of a lightweight grout in a structure according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of an obsolete tubular structure closing method according to the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention can be modified into various forms and the scope of the present invention should not be construed as being limited to the embodiments described in detail below.

In addition, the shapes and the like of the elements in the drawings may be exaggerated in order to emphasize a clearer explanation, and the same members in the drawings may be denoted by the same reference numerals, and the gist of the present invention may be unnecessarily blurred Detailed descriptions of known functions and configurations to be determined are omitted.

FIG. 2 is a schematic view showing an obsolete tubular structure closing method according to an embodiment of the present invention, FIG. 3 is a block diagram showing a flow of an obsolete tubular structure closing method according to the present invention, And FIG. 5 is a view showing a fixing state of the PVC core tube according to the present invention. FIG. 6 is a view showing the installed state of the lead wire according to the present invention, and FIG. 7 is a cross- FIG. 8 is a view illustrating a state in which a lightweight grout is injected into a structure by a filling hose according to the present invention. FIG.

As shown in FIGS. 2 to 8, the obsolete pipe-type structure closing method according to the present invention is a method of closing the structure (hereinafter, referred to as " the structure ") inside the tubular structure 100 including the old and worn water pipes, tunnels, 100, the filling hose 300 is inserted through a PVC core pipe 200 sloping up to a predetermined length, and then a lightweight grout 400 is injected and cured to close the pipeline. At first, an old water supply and drainage pipe, a tunnel, The position of the tubular structure 100 and the position for oscillating the tunneling machine 500 are measured (S10).

Thereafter, the tilting machine 500 is brought into the conveying vehicle, and the tilting machine 500 is placed at the oscillating position of the tilting machine 500, (S20).

The ramp 600 includes a support frame 610 mounted on the ground, a plurality of outer riggers 620 mounted on both sides of the support frame 610 to support the support frame 610, A slide base 630 hinged to the lower end of the support frame 610 and slidably mounted on the upper portion of the support frame 610, a lower end hinged to one side of the support frame 610, An angle adjusting member 640 slidably hinged to the base 630 and a support member 650 mounted on the lower end of the slide base 630 and rotatably supporting the drill rod 510 . At this time, the inclined platform 600 is not limited to the above-described configuration, and the inclined platform 600 may be configured to be displaceable so as to be inclined at a predetermined angle.

Next, a drill rod 510 is connected to the tilting machine 500, and then the drill rod 510 is rotated as shown in FIG. 4 (a) The surface is pushed to the front end (S30).

In the drawing, reference numeral 520 denotes a water swivel, reference numeral 530 denotes a swivel head, and reference numeral 540 denotes a metal crown.

After the drilling rod 510 is pushed to the outer peripheral surface of the structure 100, the inside of the drilling rod 510 connected to the drilling machine 500 is cleaned and cleaned (S40).

After the inside of the drill rod 510 is cleaned and cleaned, the structure 100 is confirmed through the inside of the drill rod 510 in step S50. Then, the outer diameter of the PVC core pipe 200 4 (b) and 4 (c)), the core tube connecting hole 120 is formed and the core 110 of the structure 100 is lifted d) (see S60).

Thereafter, an adhesive is applied to the outer circumferential surface of the core 110 of the structure 100 recovered to the outside, and then the adhesive applied on the outer circumferential surface of the core 110 is transferred to the structure 100 using the tenter 500, To the inner circumferential surface of the core tube connection hole 120 (S70).

An adhesive is applied to the inner circumferential surface of the core tube connecting hole 120 of the structure 100 and then the PVC core tube 200 is connected to the core tube connecting portion 120 of the structure 100 And inserted into the hole 120 in an inclined manner and fixed (S80). This allows the filling hose 300, which will be described later, to be easily moved to the inside of the structure 1000 through the inclinedly inserted PVC core tube 200 and is applied to the inner circumferential surface of the core tube connecting hole 120 One end of the PVC core tube 200 is fixedly attached to the structure 100 by an adhesive.

The PVC core pipe 200 is slantly inserted into the core pipe connection hole 120 of the structure 100 from the ground and then fixed to the insertion port 210 of the PVC core pipe 200 as shown in FIG. The lead wire LW is drawn through the air vent 800 to be connected to the structure 100 at step S90. At this time, as is well known, the air vent 800 passes water or gas generated at the time of injecting the lightweight grout 400 to the outside to form a uniform bubble in the lightweight grout 400, Lt; / RTI >

Next, a plurality of filling hoses 300 having a predetermined length are connected around the insertion port 210 side of the PVC core pipe 200, one end of the lead wire LW and the tip end of the filling hose 300 are fixed The other end of the lead wire LW is pulled out from the air vent 800 so that the filling hose 300 is inserted into the PVC core pipe 200 through the insertion port 210 of the PVC core pipe 200, (S100). This is achieved by inserting the filling hose 300 through the insertion port 210 of the slantly inserted PVC core tube 200 and pulling the filling hose 300 from the air vent 800 with the lead wire LW, The filling hose 300 can be moved and positioned at a long distance. At this time, it is preferable that the filling hose 300 is made of polyethylene (PE) having excellent water resistance and chemical resistance. However, the filling hose 300 is not necessarily limited to the polyethylene, As shown in FIG.

After the filling hose 300 is positioned inside the structure 100 as described above, lightweight grout is injected into the structure 100 (see FIGS. 2 and 8) and cured to completely fill the interior of the structure 100 (S110). At this time, the filling hose 300 connected to the grouting pump 750 is connected to the inside of the structure 100 at a pressure of about 2N / mm 2 or less through a grouting pump 750 from a lightweight grout mixer 700 installed on the ground The injection is performed by injecting pressure through the injector or by using an altitude difference. If necessary, the lightweight grout 400 may be injected into the structure 100 by closing both side openings of the structure 100.

In addition, the filling hose 300 injects the lightweight grout 400 into the structure 100 and collects and collects the required number of the grout 400 according to the installed distance.

Generally, the lightweight grout 400 is filled between a steel pipe and a steel pipe installed in the form of a double pipe in order to prevent corrosion of the steel pipe. However, recently, the lightweight grout 400 is depressed due to corrosion or destruction of the water supply pipe, Facilities are used to shut down underground structures such as old and worn out water pipes quickly and inexpensively in order to prevent breakage, structural defects or road breakage. In this case, since the strength of grouting is too strong, maintenance of the mortar is difficult, so that it is possible to freely adjust the strength and use lightweight grout which is excellent in fluidity and separation characteristics and can be transported over a long distance.

Also, when re-excavating the old tubular structure 100 including the water supply and drainage pipes, it is easy to remove the lightweight grout 400 filled in the structure 100 using high pressure water, The strength of the lightweight grout is adjusted to a range of 0.5 to 4 N / mm 2 so that the mixture is used at a blending ratio of 60 wt% air, mortar, foaming agent and 40 wt% water, which is almost equivalent to the surrounding soil. At this time, the allowable range is preferably within ± 5% by weight in the blending ratio of 60% by weight of air and 40% by weight of mortar, foaming agent and water. The dry specific gravity by mixing the light weight grout 400 is about 0.4 to 1.2 And the specific gravity of the lightweight grout is 1.07, which is as low as the specific gravity of water 1, and the cured lightweight grout 400 forms a uniform bubble of 100-200 μm.

The filling rate of the lightweight grout 400 is preferably 95% or more of the inner diameter D of the structure, and is less than 95%. The fill ratio (%) of the lightweight grout 400 is shown in Table 1 in terms of the ratio (R) of the pore size E to the pipe inner diameter D of the structure 100 (see FIG. 9).

For example, if R = E / D = 65/400 = 0.1625 0.16 when the pore size E at the inner diameter D of the structure 100 is 400 mm, The filling rate is 89.7%, so the lightweight grout 400 is refilled.

After the filling hose 300 and the PVC core pipe 200 are removed, the lightweight grout 400 is poured into the inside of the structure 100 as described above, A lightweight grout 400 filling facility, including a machine 500, a ramp 600, and a lightweight grout mixer 700.

Thereafter, the inside of the place where the PVC core pipe 200 is removed is filled with soil so as to flatten the surface of the ground, and the periphery of the PVC core pipe 200 and the oscillating position of the excavator 500 are cleaned and completed .

In the present invention as described above, a PVC core pipe (not shown) installed at an inclined position from the ground to the structure 100 in a non-excavated state without building a working structure in a tubular structure 100 including a water supply and drainage pipe, tunnel, The filling hose 300 is inserted through the hose 200 and then the lightweight grout 400 is injected and cured to completely fill and stabilize the inside of the structure 100. This makes it particularly applicable in a high traffic area, Since it is possible to fill the long distance of the lightweight grout 400 by moving the filling hose 300 into the interior of the structure 100, it is possible to reduce the construction cost and the construction period, It is possible to prevent depressions and breakage, thereby preventing ground subsidence, damage to buildings and other facilities on the ground, structural defects, road breakage, and the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the particular details of the embodiments set forth herein. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

100: Structure 110: Core
120: core tube connection hole 200: PVC core tube
210: insertion port 300: filling hose
400: lightweight grout 500: trowel
510: Drilling rod 600: Ramp
610: Support frame 620: Outer legger
630: slide base 640: angle adjusting member
650: support member 700: lightweight grout mixer
750: Grouting pump 800: Air vent
LW: Lead wire

Claims

In an obsolete pipe-type structure closing method in which a pipe is closed by injecting a filling material into a pipe-like structure 100 including an old water and sewer pipe, a tunnel, and a tunnel,
(S10) measuring the position of the structure (100) and the oscillation position of the excavator (500);
A step S20 of inclining the tilting machine 500 at an oscillating position of the tilting machine 500 at a predetermined angle toward the structure 100 on an inclined platform 600 capable of angle adjustment;
Connecting the drilling rod 510 to the tilting machine 500 and then rotating the drilling rod 510 to pivot the drilling rod 510 to the distal end of the outer circumference of the structure 100;
A step S40 of claying and cleaning the interior of the drilling rod 510 connected to the excavator 500;
(S50) confirming the position of the structure 100 through the inside of the drill rod 510;
A step of piercing the core 110 in accordance with the outer diameter of the PVC core pipe 200 to form the core pipe connection hole 120 and recovering the core 110 of the structure 100 from the outside S60);
(S70) applying an adhesive to the outer circumferential surface of the core 110 of the recovered structure 100 and applying the adhesive to the inner circumferential surface of the core tube connecting hole 120 of the structure 100;
Inserting and fixing the PVC core pipe 200 from the ground to the core pipe connection hole 120 of the structure 100;
A step S90 of drawing the lead wire LW through the insertion port 210 of the PVC core pipe 200 and drawing the air vent 800 to the outside of the air vent 800 connected to the structure 100;
A plurality of filling hoses 300 are connected at the insertion port 210 side of the PVC core pipe 200 and one end of the lead wire LW and the tip end of the filling hose 300 are fixed and then the lead wires LW (S100) the filling hose 300 to the inside of the structure 100 through the insertion port 210 of the PVC core pipe 200 by pulling the other end of the PVC core pipe 200. [
(S110) injecting a lightweight grout (400) into the structure (100) through the filling hose (300) and curing the interior of the structure (100) to fill the interior of the structure (100);
A method of constructing an obsolete tubular structure.

The method according to claim 1,
The ramp 600 includes a support frame 610 mounted on the ground, a plurality of outer riggers 620 mounted on both sides of the support frame 610 to support the support frame 610, A slide base 630 hinged to the lower end of the support frame 610 and slidably mounted on the upper portion of the support frame 610, a lower end hinged to one side of the support frame 610, An angle adjusting member 640 slidably hinged to the base 630 and a support member 650 mounted on the lower end of the slide base 630 and rotatably supporting the drill rod 510 A method of constructing an obsolete tubular structure.

The method according to claim 1,
Wherein the filling hose (300) injects the lightweight grout (400) into the structure (100) and leaves the required number of the holes according to the distance to be poured, thereby recovering the old structure.

The method according to claim 1,
Wherein the filling hose (300) is made of polyethylene (PE).

The method according to claim 1,
Wherein the lightweight grout 400 is injected or injected in one of the system of injection pressure using the grouting pump 750 and the system of the elevation difference, .

6. The method according to any one of claims 1 to 5,
Wherein the filling rate of the lightweight grout injected and cured into the structure 100 is at least 95% with respect to the tube inner diameter D of the structure 100.