WO2022131699A1 - Dispositif d'injection de coulis et procédé de construction par injection de coulis l'utilisant - Google Patents

Dispositif d'injection de coulis et procédé de construction par injection de coulis l'utilisant Download PDF

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Publication number
WO2022131699A1
WO2022131699A1 PCT/KR2021/018759 KR2021018759W WO2022131699A1 WO 2022131699 A1 WO2022131699 A1 WO 2022131699A1 KR 2021018759 W KR2021018759 W KR 2021018759W WO 2022131699 A1 WO2022131699 A1 WO 2022131699A1
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WO
WIPO (PCT)
Prior art keywords
grout
air
hose
packer
water
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Application number
PCT/KR2021/018759
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English (en)
Korean (ko)
Inventor
정덕교
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정덕교
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Publication date
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Publication of WO2022131699A1 publication Critical patent/WO2022131699A1/fr

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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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0085—Geotextiles
    • E02D2300/009—Geotextiles with multi-layer structure

Definitions

  • the present invention relates to a grout injection device for improving soft ground and a grouting construction method using the same.
  • the bearing capacity of the excavated ground is strengthened in advance before tunnel excavation, so that the By securing the stability of the excavation surface, the tunnel excavation proceeds safely and quickly.
  • Korean Patent Registration No. 10-776304 which uses a pair of packer supports to make a packer assembly, uses this packer assembly to make a grout injection device, and injects grout injection material into the ground using this grout injection device It is a direct drilling grouting construction method to improve and strengthen the soft ground.
  • this pre-registered invention inserts both ends of the packer into the outer surface of the protruding support formed in the pair of packer supporters, then tensions them with a binding tool to connect and install them one by one to manufacture the packer assembly, so it takes a long time and work. This was tricky.
  • the packer support is separated as a pair, the up and down movement is severe even when the packer is connected and installed. Not only was it inconvenient to manufacture, but also when the grout injection device was inserted and installed at a predetermined position inside the steel pipe in which the grouting injection hole was formed, the packer assembly moved too much, which made the operation also inconvenient.
  • the grout injection device made by inserting and installing the packer assembly in multiple stages at predetermined intervals requires a lot of installation time and waste of materials because several rapid payment injection pipes must be installed in order to inject the rapid payment material into the packer.
  • the pre-registered invention as well as other conventional grout injection devices of other structures include water and air in the grout material when grout is injected, the grout curing time is prolonged and a ground improvement material with better strength is obtained. It was difficult to obtain.
  • the grout material which contains water and air, is discharged to the surface with a rather soft concentration.
  • the time and injection range There are many limitations in reducing the time and extending the injection range.
  • the present invention was devised in consideration of the above problems, and various types of air/water discharge means are provided so that large particles of the grout are filtered and only air and water are discharged when the grout is injected while manufacturing the grout injection device.
  • An object of the present invention is to provide a grout injection device having an improved structure.
  • another object of the present invention is to filter out large particles of grout and discharge only air and water to the outside when grout is injected, so that injection of the grout is easy and the injection time is shortened, the loss of the grout is small, and the air and water are discharged. Due to this, the grout curing time is shortened, and the purpose is to obtain a ground improvement material with better strength.
  • another object of the present invention is to make the assembly, installation and use very quickly and completely by improving the structure of the air/water discharge means, the assembly of the grout injection device is very easy, and the air/water discharge is reliable
  • the injection time can be shortened, and the injection range can be further expanded, and the grout injection efficiency is increased compared to when using conventional grout injection devices.
  • the grout injection device of the present invention for achieving the object described in the above problem to be solved,
  • a casing made of a hollow tube body inserted into a drilling hole formed in the ground and having a plurality of grout outlet holes formed on the outer surface thereof;
  • a sealing stopper coupled to the upper end of the casing to seal the casing and the inlet of the perforation hole
  • the grouting injection device comprising a sealing stopper and a grout injection pipe installed through the packer so that the tip is positioned in a plurality of compartments created by the packer so that the grout can be injected, respectively,
  • Doedoe installed in communication with the outside in a plurality of compartments formed in the packer, and further comprising an air/water discharge means capable of filtering out large particles of grout and discharging only air and water when the grout is injected,
  • the grouting construction method using the grout injection device of the present invention is coupled to a discharging hose installed through a sealing stopper and a packer and a tip of the discharging hose, and a hose connector made of a hollow tube body having a plurality of discharge holes formed on the outer surface, and the hollow Providing a filter equipped with a fixing means that is covered on the outer surface of the hose connector made of a tube to filter out large particles of grout when grout is injected, allows only air and water contained in the grout to pass through, and is fixed so as not to be separated from the hose connector;
  • a predetermined number of grout injection pipes are inserted and installed through the sealing stopper and packer, and a discharge hose is also inserted and installed at the same time,
  • a hose connector made of a hollow tube body having a plurality of outlet holes formed on the outer surface is connected to the tip or middle of the outlet hose, and when grout is injected into the outer surface of the hose connector, large particles of grout are filtered and only air and water contained in the grout pass through. Completing the installation of the air/water discharge means by fixing the filter member so as not to be separated using a fixing means after covering the filter member;
  • the assembly of which the grout injection pipe and the air/water discharge means have been installed is inserted into the casing made of a hollow tube body with a plurality of grout outlet holes formed on the outer surface, and then the entrance of the casing is sealed with the sealing stopper to inject the grout. Completing assembly of the device;
  • the grout is forcibly injected through the grout injection pipe using a grout injection pump, and the grout is penetrated into the ground through a plurality of grout outlet holes formed on the outer surface of the casing,
  • the filter member constituting the air/water discharge means filters out large particles of grout, and only the air and water contained in the grout are forcibly discharged to the outside through the discharge hose connected to the hose connection port through the discharge hole of the hose connection port, thereby reducing the loss of the grout. It is achieved by performing a step of shortening the grout curing time due to the discharge of air and water even though it is small and obtaining a ground improvement material with more excellent strength.
  • the installation of the air/water discharge means is very simple and quick while manufacturing the grout injection device, there is an effect that the assembly of the grout injection device is very simple and quick.
  • the filter member constituting the air/water discharge means when grout is forcibly injected with a strong injection pressure through the grout injection pipe when the grout is injected, the large particles of the grout are filtered by the filter member constituting the air/water discharge means, and the air contained in the grout is Since only water passes through and is easily discharged to the outside along the discharge hose, the injection of grout is made easily and the injection time is greatly shortened. has the effect of reducing
  • the present invention is a very epoch-making invention that can greatly contribute to industrial development.
  • 1 to 4 are views showing an embodiment of the present invention grout injection device
  • FIG. 1 is a view showing a state in which an air/water discharge means is formed using a discharge hose separately installed in a plurality of compartment spaces;
  • FIG. 2 is a view showing a state in which an air/water discharge means is formed using a discharge hose connected in a long line to a plurality of compartment spaces;
  • FIG. 3 is a view showing a state in which an air / water discharge means is formed while using an inflatable packer
  • FIG. 4 is a view showing a state in which the air/water discharge means is integrally formed in the inflatable packer.
  • FIG. 5a and 5b are views showing one configuration of the air / water discharge means formed in the present invention.
  • 5A is an exploded perspective view
  • Figure 5b is a cross-sectional view of the assembled state.
  • FIG. 6a and 6b are views showing another configuration of the air / water discharge means formed in the present invention.
  • 6a is an exploded perspective view
  • Figure 6b is a cross-sectional view of the assembled state.
  • drain hose 220 hose end connection
  • auxiliary connector 300a locking projection
  • the grout injection device according to the present invention is basically inserted and installed in the perforated hole 1a formed in the ground 1, and a casing 10 made of a hollow tube body having a plurality of grout outlet holes 11 formed on the outer surface thereof;
  • a sealing stopper 20 coupled to the upper end of the casing 10 to seal the casing 10 and the perforation hole 1a inlet;
  • a packer 30 inserted and installed at a predetermined interval inside the casing 10 to create a plurality of compartment spaces;
  • the tip is positioned in the plurality of compartments created by the packer 30 so that each grout can be injected. to be,
  • the most characteristic is that it is installed in communication with the outside in a plurality of compartments formed in the packer 30, and air/water discharge means ( 200) by further configuring,
  • the air / water discharge means 200 in the present invention is a discharge hose 210 that is installed through the sealing stopper 20 and the packer 30 as an example configuration
  • a hose connector 220 coupled to the front end of the discharge hose 210 and made of a hollow tube body having a plurality of discharge holes 221 formed on an outer surface thereof;
  • It consists of a filter member 230 equipped with a fixing means 231 made of an iron string or Velcro tape that is covered on the outer surface of the hose connector 220 made of the hollow tube and is fixed so as not to be separated.
  • the grout injection devices 100 installed with the air/water discharge means 200 having such a configuration, that is, the discharge hoses installed separately in a plurality of compartments partitioned by the packer 30 as shown in FIG. 1 , respectively.
  • the air/water discharge means 200 is formed by using the discharge hose 210 connected in a long line to the plurality of compartments,
  • the expansion member 32 expands while the casing ( 10) Forcing the grout with a strong injection pressure through the grout injection pipe 40 using the grout injection device of the present invention in which the air/water discharge means 200 is formed while being used in the expandable packer 30 that seals the inside.
  • the air inside the casing is discharged first, so that the grout is easily injected.
  • the grout material fills up to the filter member 230 , the large particles of the grout are filtered by the filter member 230 and the remaining particles contained in the grout. Only air and water pass through and are easily discharged to the outside along the plurality of discharge holes 221 formed in the hose connector 220 and the discharge hose 210 coupled to the hose connector 220 .
  • This effect is another configuration example of the air/water discharge means 200, as shown in the accompanying drawing 4, when the rapid payment material is injected through the rapid payment material injection hole 31a provided in the cylindrical packer support 31, the expansion member ( 32) is formed integrally with the expandable packer 30 that seals the inside of the casing 10 while expanding,
  • the lower part of the packer support 31 is formed to have a smaller diameter than the upper part, and a horizontal hole 31c communicating with the vertical hole 31b to which the lower end of the discharge hose 210 connected to the outside is coupled is formed on the side thereof, and then horizontal
  • a horizontal hole 31c communicating with the vertical hole 31b to which the lower end of the discharge hose 210 connected to the outside is coupled is formed on the side thereof, and then horizontal
  • the filter member 230 equipped with the fixing means 231 is fixedly installed so that the hole 31c is wrapped.
  • the filter member 230 constituting the air/water discharge means 200 integrally provided in the lower part of the inflatable packer 30 is The large particles of the grout are filtered out, and only the air and water contained in the grout are forcibly discharged to the outside through the horizontal hole 31c, the vertical hole 31b communicating with it, and the discharge hose 210 coupled to the vertical hole 31b.
  • the grout curing time is shortened due to the discharge of air and water, and a ground improvement material with better strength can be obtained.
  • the hose connector 220 made of a hollow tube body, as shown in FIG. 5b, has a predetermined depth inside By integrally forming the locking jaw 222 on the
  • the tip of the discharge hose 210 can be conveniently and quickly coupled to a predetermined depth only to the portion where it is caught on the locking jaw 222,
  • an auxiliary connector 300 made of a hollow tubular body in which engaging projections 301 and 302 are formed on the upper outer periphery and the lower inner periphery are further provided,
  • the discharge hose 210 is coupled to the auxiliary connector 300 to a predetermined depth
  • the auxiliary connector 300 is coupled to the hose connector 220 made of a hollow tube body so that it can be conveniently and quickly coupled to a predetermined depth. .
  • the connection of the outlet hose 210 may be very robust as a result.
  • the grouting construction method using the grout injection device of the present invention described above is as follows.
  • a predetermined number of grout injection pipes 40 are inserted and installed through the sealing stopper 20 and the packer 30, and the discharge hose 210 is also inserted and installed at the same time,
  • the hose connector 220 made of a hollow tubular body having a plurality of outlet holes 221 formed on the outer surface of the discharging hose 210 is connected to the front end or the middle portion of the outlet hose 210, and grout is injected into the outer surface of the hose connector 220, large particles of grout Complete the installation of the air / water discharge means 200 by covering the filter member 230 made to pass only the air and water contained in the grout and fixing it so as not to be separated using the fixing means 231;
  • the assembly in which the grout injection pipe 40 and the air/water discharge means 200 have been installed through the sealing stopper 20 and the packer 30 is made of a hollow tube body having a plurality of grout outlet holes 11 formed on the outer surface. Completing the assembly of the grout injection device 100 by inserting it into the casing 10 and then sealing the entrance of the casing 10 with a sealing stopper 20;
  • Grout is forcibly injected through the grout injection pipe 40 using a grout injection pump, and the grout is penetrated into the ground through a plurality of grout outlet holes 11 formed on the outer surface of the casing 10,
  • the large particles of the grout are filtered by the filter member 230 constituting the air/water discharge means 200, and only the air and water contained in the grout are passed through the discharge hole 221 of the hose connector 220 to the hose connector 220.
  • the loss of the grout is small, and the grout curing time is shortened due to the discharge of air and water, and a ground improvement body with better strength is obtained.
  • the air/water discharge means 200 is formed by using the discharge hose 210 separately installed in a plurality of compartment spaces divided by the packer 30 .
  • the air/water discharge means 200 is formed by using the discharge hose 210 connected in a long line to a plurality of compartment spaces, as well as the rapid payment injection pipe 41 as shown in FIG.
  • the rapid payment material is injected through the rapid payment material injection hole 31a provided in the cylindrical packer support 31, the expandable member 32 expands and seals the inside of the casing 10.
  • the expandable packer 30 Since the grout injection device 100 of the present invention installed with the air/water discharge means 200 while being used in the
  • the grout curing time is greatly reduced due to the discharge of air and water.
  • the hooking jaw 222 is integrally formed on the inner surface of the hose connector 220 made of a hollow tube body at a predetermined depth, so that the discharge hose 210 can be conveniently and quickly to a predetermined depth only to the portion where it is caught on the locking jaw 222.
  • the discharge hose 210 can be conveniently and quickly to a predetermined depth only to the portion where it is caught on the locking jaw 222.
  • the discharge hose 210 can be conveniently and quickly combined using the auxiliary connector 300 made of a hollow tubular body in which the locking jaws 301 and 302 are formed on the upper outer periphery and the lower inner periphery, respectively.
  • the installation of the air/water discharge means 200 is made very easily, thereby greatly reducing the overall working time.
  • Packer support ( 31) The lower part is formed to have a smaller diameter than the upper part, and a horizontal hole 31c communicating with the vertical hole 31b to which the lower end of the discharge hose 210 connected to the outside is coupled is formed on the side thereof, and then the horizontal hole 31c is manufacturing an inflatable packer 30 integrally equipped with an air/water discharge means 200 by fixing and installing a filter member 230 equipped with a fixing means 231 to be wrapped;
  • a predetermined number of grout injection pipes 40 are inserted and installed through the sealing stopper 20 and the packer 30, and at the same time, the discharge hose 210 and the air/water discharge means 200 are integrally equipped with the inflatable packer 30. Completing the installation of the air / water discharge means 200 and the inflatable packer 30 at the same time by connecting to the vertical hole 31b provided in the;
  • the assembly in which the air/water discharge means 200 and the inflatable packer 30 are installed at the same time is inserted into the casing 10 made of a hollow tube body having a plurality of grout outlet holes 11 formed on the outer surface, and then the casing 10 Completing assembly of the grout injection device 100 by sealing the inlet with a sealing stopper 20;
  • Grout is forcibly injected through the grout injection pipe 40 using a grout injection pump, and the grout is penetrated into the ground through a plurality of grout outlet holes 11 formed on the outer surface of the casing 10,
  • the large particles of the grout are filtered by the filter member 230 constituting the air/water discharge means 200 integrally provided at the bottom of the inflatable packer 30, and only the air and water contained in the grout are formed through the horizontal hole 31c and the By forcibly discharged to the outside through the communicating vertical hole 31b and the discharge hose 210 coupled to the vertical hole 31b, the loss of the grout is small, and the grout curing time is shortened due to the discharge of air and water and the ground has better strength This is accomplished by performing the steps to obtain an improved body.
  • the rapid payment material is injected through the air/water discharge means 200 through the rapid payment material injection hole 31a provided in the cylindrical packer support 31 .
  • the lower surface expandable member 32 is formed integrally with the expandable packer 30 that seals the inside of the casing 10 while expanding,
  • the lower part of the packer support 31 is formed to have a smaller diameter than the upper part, and a horizontal hole 31c communicating with the vertical hole 31b to which the lower end of the discharge hose 210 connected to the outside is coupled is formed on the side thereof, and then horizontal Since the grout injection device 100 provided with the air/water discharge means 200 made by fixing and installing the filter member 230 equipped with the fixing means 231 so that the hole 31c is wrapped is used,
  • the grout When the grout is forcibly injected with a strong injection pressure through the grout injection pipe 40, the grout can Large particles are filtered and only the air and water contained in the grout are forcibly discharged to the outside through the horizontal hole 31c, the vertical hole 31b communicating with it, and the discharge hose 210 coupled to the vertical hole 31b,
  • the grouting construction method according to the second embodiment also reduces the injection time because the grout is easily injected.
  • the grout curing time is greatly shortened due to the discharge of air and water.
  • the grout injection apparatus and the grouting construction method using the same according to an embodiment of the present invention can be used to improve the ground by injecting the grout into the ground.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)

Abstract

La présente invention concerne un dispositif d'injection de coulis et un procédé de construction par injection de coulis l'utilisant, et, dans la fabrication d'un dispositif d'injection de coulis, fournit une structure qui est pourvue de divers types de moyens d'évacuation d'air/eau de façon à pouvoir filtrer de grandes particules de coulis et décharger uniquement de l'air et de l'eau lors de l'injection du coulis. Selon la présente invention, un dispositif d'injection de coulis peut être fabriqué de manière simple et rapide, la perte de coulis peut être réduite, un temps de durcissement du coulis peut être considérablement réduit par l'évacuation de l'air et de l'eau, et, après durcissement, un corps d'amélioration au sol ayant une excellente résistance peut être obtenu par comparaison à l'utilisation d'un procédé de construction par injection de coulis à l'aide d'un dispositif d'injection de coulis classique.
PCT/KR2021/018759 2020-12-14 2021-12-10 Dispositif d'injection de coulis et procédé de construction par injection de coulis l'utilisant WO2022131699A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2020-0174781 2020-12-14
KR1020200174781A KR102524835B1 (ko) 2020-12-14 2020-12-14 그라우트 주입장치 및 이를 이용한 그라우팅 시공방법

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102498966B1 (ko) 2022-08-17 2023-02-10 변동주 그라우팅 시 관로 형태를 보호하고 그라우팅액의 유실을 방지하기 위한 튜브 삽입 공법
KR102585816B1 (ko) * 2023-04-26 2023-10-06 서진이엔씨 주식회사 터널 갱내 차수 그라우팅 공법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08277523A (ja) * 1995-04-07 1996-10-22 Kumagai Gumi Co Ltd 地中の難透水性地盤の構築方法
KR100806938B1 (ko) * 2001-07-13 2008-02-25 조희남 그라우팅액을 하향주입하여 충진할 수 있도록 한 지하수심정의 그라우팅 장치 및 방법.
KR100927038B1 (ko) * 2009-06-02 2009-11-17 하리기술이십이 주식회사 기능별 주입관을 이용한 강관 그라우팅 공법
KR101961766B1 (ko) * 2018-10-05 2019-03-25 주식회사 에스티 지중경사 및 지하수위 측정장치
KR102000598B1 (ko) * 2018-11-12 2019-07-16 임사인 패커조립체 및 이를 이용한 터널의 그라우트 주입장치 및 터널의 비탈면 보강공법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08277523A (ja) * 1995-04-07 1996-10-22 Kumagai Gumi Co Ltd 地中の難透水性地盤の構築方法
KR100806938B1 (ko) * 2001-07-13 2008-02-25 조희남 그라우팅액을 하향주입하여 충진할 수 있도록 한 지하수심정의 그라우팅 장치 및 방법.
KR100927038B1 (ko) * 2009-06-02 2009-11-17 하리기술이십이 주식회사 기능별 주입관을 이용한 강관 그라우팅 공법
KR101961766B1 (ko) * 2018-10-05 2019-03-25 주식회사 에스티 지중경사 및 지하수위 측정장치
KR102000598B1 (ko) * 2018-11-12 2019-07-16 임사인 패커조립체 및 이를 이용한 터널의 그라우트 주입장치 및 터널의 비탈면 보강공법

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KR20230035003A (ko) 2023-03-10
KR20220084868A (ko) 2022-06-21

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