KR20090074854A - A construction method for strengthening the ground using a grouting pack and an apparatus therefor - Google Patents

A construction method for strengthening the ground using a grouting pack and an apparatus therefor Download PDF

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Publication number
KR20090074854A
KR20090074854A KR1020080000530A KR20080000530A KR20090074854A KR 20090074854 A KR20090074854 A KR 20090074854A KR 1020080000530 A KR1020080000530 A KR 1020080000530A KR 20080000530 A KR20080000530 A KR 20080000530A KR 20090074854 A KR20090074854 A KR 20090074854A
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South Korea
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ground
reinforcing
grouting
pack
reinforcing filler
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KR1020080000530A
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Korean (ko)
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수 정 곽
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한미기초개발주식회사
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Priority to KR1020080000530A priority Critical patent/KR20090074854A/en
Publication of KR20090074854A publication Critical patent/KR20090074854A/en

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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
    • E02D2300/0004—Synthetics
    • E02D2300/0006—Plastics

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

Abstract

A ground reinforcing method and a ground reinforcing apparatus using a grouting pack are provided to maintain the fixed shape of the filler when press-inserting the reinforcing filler into the ground to reinforce the soft ground. A ground reinforcing method using a grouting pack is composed of the step of boring the ground, the step of inserting a grouting pack(40) made of geotextile into the bored hole, and the step of pushing the surrounding ground by the expansion of the reinforcing filler by press-inserting a reinforcing filler(50) into the grouting pack through a hose(20) and an injection port(30) with a pump(10).

Description

그라우팅 팩을 이용한 지반 보강 공법 및 장치{A CONSTRUCTION METHOD FOR STRENGTHENING THE GROUND USING A GROUTING PACK AND AN APPARATUS THEREFOR}Ground reinforcement method and device using grouting pack {A CONSTRUCTION METHOD FOR STRENGTHENING THE GROUND USING A GROUTING PACK AND AN APPARATUS THEREFOR}

본 발명은 지반 보강 공법 및 장치에 관한 것으로서, 특히 보강될 지반에 그라우팅 팩을 삽입하고, 그라우팅 팩 내에 보강충전재를 압입함으로써, 보강충전재가 지중으로 흩어지지 않고 일정한 형태를 유지시킬 수 있는 지반 보강 공법 및 장치에 관한 것이다. The present invention relates to a ground reinforcement method and apparatus, and in particular, by inserting a grouting pack into the ground to be reinforced and injecting the reinforcing filler into the grouting pack, the ground reinforcing method can maintain a constant shape without being scattered into the ground. And to an apparatus.

이미 축조되거나 건축될 건축물이나 구축물 등의 지반 침하로 인하여 건축물이나 구축물 등의 안전에 커다란 위험이 초래되거나 초래될 우려가 있다고 판단되어 지는 경우, 연약한 지반을 보강하기 위한 다양한 방법이 있다. There are various ways to reinforce the soft ground when it is judged that the ground subsidence of the structure or structure to be constructed or built will cause or may cause a great risk to the safety of the structure or the structure.

건축물이나 구축물이 장기간의 시간경과로 주변환경이 변하여 지반이 침하하거나, 애초부터 연약한 지반에 건축물이나 구축물을 시공할 때 그 구조물은 지반이 침하되거나 연약지반의 존재로 붕괴될 수 있는 위험성을 가지고 있다. When a building or a structure changes its surrounding environment over a long period of time, or when a building or a structure is constructed on a soft ground from the beginning, the structure has the risk of ground subsidence or collapse of the soft ground. .

이러한 위험을 최소화하기 위하여, 침하된 지반 등에 구멍을 뚫어 시멘트 등을 강제로 충전 응고시켜 지반을 강고하게 하는 공법이 사용되어 왔다. In order to minimize such a risk, a method of hardening the ground by forging a solidified cement and the like by drilling a hole in a submerged ground or the like has been used.

종래에는, 도 1에 도시된 바와 같이, 연약하여 보강이 필요한 지반을 소정의 깊이로 통공하고, 시멘트계 또는 에폭시 수지 등과 같은 보강충전재(500)를 압입하기 위해 주입구(200)를 통공 내에 삽입시키고, 펌프(100)로 보강충전재(500)를 압입하면, 주위 연약한 지반이 더욱 견고하게 된다. Conventionally, as shown in Figure 1, through the ground to be reinforced and soft to the predetermined depth, inserting the inlet 200 into the through hole to press the reinforcing filler 500, such as cement-based or epoxy resin, When the reinforcing filler 500 is press-fitted into the pump 100, the surrounding soft ground becomes more firm.

그런데, 도 1에 도시된 바와 같이, 지반에 보강충전재(500)를 압입할 때, 지반의 깊이에 따라 지반의 밀도가 달라, 주위 지반에 일정하게 주입되지 않고, 상대적으로 더 약한 지반에서 더 많이 퍼지게 된다. However, as shown in FIG. 1, when the reinforcing filler 500 is press-fitted into the ground, the density of the ground varies according to the depth of the ground, and is not constantly injected into the surrounding ground, but more in relatively weak ground. Spreads.

또한, 보강충전재(500)가 지반의 여러 틈새로 스며들어 만족할 만한 강도를 가지지 못하는 결점이 발생한다. In addition, the reinforcing filler 500 penetrates into the various gaps of the ground, a defect does not have a satisfactory strength.

더욱이, 좁은 공간의 지반을 보강할 경우, 보강충전재(500)가 소정의 범위를 벗어나지 않고 일정한 크기로 형성되는 것이 요구된다. In addition, when reinforcing the ground in a narrow space, it is required that the reinforcing filler 500 is formed in a constant size without departing from a predetermined range.

본 발명의 목적은 연약한 지반을 보강하기 위해, 지반에 보강충전재를 압입할 때, 보강충전재가 일정한 형태를 형성하고, 지반에 스며들지 않도록 하는 지반 보강 공법 및 장치를 제공하는 데 있다. It is an object of the present invention to provide a ground reinforcing method and apparatus for reinforcing a soft ground, when the reinforcing filler is pressed into the ground, the reinforcing filler forms a certain shape, and does not penetrate the ground.

상기 목적은 본 발명의 바람직한 일 실시예에 따라, 지반에 보강충전재를 압입하여 지반을 보강하기 위한 지반 보강 공법에 있어서, (a) 지반을 천공하는 단계; (b) 상기 천공된 부피보다 큰 부피를 가지는 그라우팅 팩을 상기 천공된 공간 내에 삽입하는 단계; 및 (c) 상기 그라우팅 팩 내에 상기 보강충전재를 압입하여 상기 그라우팅 팩이 팽창함으로써 주위 지반을 밀어내는 단계를 포함하는 지반 보강 공법에 의해 달성된다. According to an embodiment of the present invention, in the ground reinforcing method for reinforcing the ground by indenting the reinforcing filler in the ground, (a) perforating the ground; (b) inserting a grouting pack having a volume greater than the perforated volume into the perforated space; And (c) pushing the reinforcing filler into the grouting pack to swell the ground by expanding the grouting pack.

본 발명에 따른 지반 보강 공법 및 장치는, 연약한 지반을 보강하는 데 있어서, 천공된 지반에 그라우팅 팩을 삽입하여, 그 안에 보강충전재를 압입함으로써, 보강충전재가 그라우팅 팩의 형태에 따라 일정하게 형성되고, 보강충전재가 지반으로 스며들지 않게 한다. The ground reinforcing method and apparatus according to the present invention, in reinforcing the soft ground, by inserting the grouting pack in the perforated ground, indenting the reinforcing filler therein, the reinforcing filler is constantly formed according to the shape of the grouting pack Prevent reinforcing filler from seeping into the ground.

본 발명은 연약한 지반을 보강하기 위해 지반을 천공하고, 천공된 지반에 소정의 크기를 가진 그라우팅 팩을 삽입하여 그라우팅 팩 내에 보강충전재를 압입함 으로써, 보강충전재가 그라우팅 팩의 형태에 따라 일정하게 형성되며, 지반으로 퍼지거나 스며들지 않도록 하는 지반 보강 공법 및 장치에 관한 것이다. The present invention perforates the ground to reinforce the soft ground, by inserting the reinforcing filler in the grouting pack by inserting a grouting pack having a predetermined size in the perforated ground, the reinforcing filler is constantly formed according to the shape of the grouting pack The present invention relates to a ground reinforcement method and apparatus that does not spread or seep into ground.

본 발명에 따른 지반 보강 공법은, 먼저, 연약한 지반을 보강하기 위하여, 현장 조사를 실시한다. In the ground reinforcing method according to the present invention, first, in order to reinforce the soft ground, the site survey is performed.

현장 조사는 보강될 지반의 구조, 지반의 강도 및 지하수위 등과 같은 지층현황파악, 및 장비진입성, 주변환경 및 작업여건 등과 같은 현장여건파악을 실시할 수 있다. On-site surveys can be carried out to identify strata such as the structure of the ground to be reinforced, the strength of the ground and the groundwater level, and the site conditions such as equipment ingress, surroundings and working conditions.

현장 조사를 통해 필요한 지지력에 따라, 천공의 직경, 그라우팅 팩의 직경 및 보강충전재의 재료 등을 결정한다. Depending on the bearing capacity required by the site survey, the diameter of the perforation, the diameter of the grouting pack, and the material of the reinforcing filler are determined.

다음, 보강될 지반을 천공기(미도시) 등으로 소정의 심도까지 천공한다. Next, the ground to be reinforced is drilled to a predetermined depth with a puncher (not shown) or the like.

도 2는 본 발명에 따른 지반 보강 공법의 바람직한 일 실시예에 따라, 시공되는 형태를 도시한 단면도이다. 2 is a cross-sectional view showing a form that is constructed, according to an embodiment of the ground reinforcement method according to the present invention.

천공기의 직경은 시공 조건에 따라 다양하게 선택될 수 있다. The diameter of the perforator can be variously selected depending on the construction conditions.

다음, PET 또는 PP 등의 유연성있는 토목 섬유로 제조된 그라우팅 팩(40)을 천공에 삽입한다. Next, a grouting pack 40 made of flexible geotextiles such as PET or PP is inserted into the perforation.

그라우팅 팩(40)의 재료는 이에 한정되지 않으며, 본 발명의 목적을 달성할 수 있는 재료라면 모두 적용이 가능하다. The material of the grouting pack 40 is not limited thereto, and any material can be used as long as the material can achieve the object of the present invention.

그라우팅 팩(40)의 부피는 보강충전재가 압입되어 보강할 설계 용량 만큼의 부피로 형성될 수 있다. The volume of the grouting pack 40 may be formed in a volume equal to the design capacity to which the reinforcing filler is press-fitted and reinforced.

그라우팅 팩(40) 내에 보강충전재를 압입하기 위해, 주입구(30)를 삽입하고 펌프(10)로 보강충전재를 압입한다. In order to press-fit the reinforcing filler in the grouting pack 40, the injection hole 30 is inserted and the reinforcing filler is press-fitted into the pump 10.

도 3은 그라우팅 팩(40) 내에 보강충전재(50)가 압입된 형태를 도시한 단면도이다. 3 is a cross-sectional view illustrating a form in which the reinforcing filler 50 is pressed into the grouting pack 40.

도 3에 도시된 바와 같이, 본 발명에 따른 지반 보강 공법은, 연약한 지반을 보강하기 위해, 지반을 소정의 깊이로 천공하고, 천공 내에 보강충전재(50)를 압입하기 전에 그라우팅 팩(40)을 천공 내에 삽입하여, 그라우팅 팩(40) 내에 보강충전재(50)를 펌프(10)에 의해 압입함으로써, 보강충전재(50)가 일정한 형태로 확장된 후, 응고되도록 한다. 그라우팅 팩(40)은 고정부(42)에 의해 지반에 고정될 수 있다.As shown in Figure 3, the ground reinforcement method according to the present invention, in order to reinforce the soft ground, to drill the ground to a predetermined depth, the grouting pack 40 before pressing the reinforcing filler 50 in the drilling By inserting in the perforations, the reinforcing filler 50 is pressed into the grouting pack 40 by the pump 10, so that the reinforcing filler 50 is expanded to a certain shape, and then solidified. The grouting pack 40 may be fixed to the ground by the fixing part 42.

따라서, 보강충전재(50)는 펌프(10)에 의해서, 호스(20) 및 주입구(30)를 통해 그라우팅 팩(40)에 주입된다. Therefore, the reinforcing filler 50 is injected into the grouting pack 40 by the pump 10 through the hose 20 and the injection port 30.

주입구(30)의 직경은 시공 조건에 따라 다양하게 선택될 수 있다. The diameter of the injection hole 30 may be variously selected depending on the construction conditions.

보강충전재(50)는 그라우팅 팩(40)의 크기만큼 확장되어 주위 지반을 더욱 단단하게 한다. The reinforcing filler 50 is expanded by the size of the grouting pack 40 to make the surrounding ground harder.

본 발명에서, 보강충전재(50)의 재료는 제한되지 않는다. In the present invention, the material of the reinforcing filler 50 is not limited.

보강충전재(50)는 시멘트계의 페이스트(paste), 몰타르(mortar), 에폭시 수지 등을 적절한 비율로 배합하여 구비될 수 있다. The reinforcing filler 50 may be provided by mixing cement-based paste, mortar, epoxy resin, or the like in an appropriate ratio.

한편, 도 4에 도시된 바와 같이, 보강충전재(50)의 압입이 완료되면, 주입구(30)를 제거하고, 상부 천공을 메워 시공을 완료한다. On the other hand, as shown in Figure 4, when the indentation of the reinforcing filler 50 is completed, the injection hole 30 is removed, the upper perforation fills the construction.

주입구(30)는 제거되지 않을 수도 있다. The injection port 30 may not be removed.

넓은 지반을 보강할 경우에는, 지반개량률을 고려하여 보강할 간격 및 배치를 결정하여 시공한다. In the case of reinforcing a large ground, it is necessary to determine the spacing and arrangement to reinforce in consideration of the ground improvement rate.

본 발명에 따른 지반 보강 공법 및 장치는, 보강충전재(50)를 주입할 때, 주입압력을 측정할 수 있는 주입압력게이지를 더 포함할 수 있다. The ground reinforcing method and apparatus according to the present invention may further include an injection pressure gauge capable of measuring the injection pressure when injecting the reinforcing filler 50.

본 발명에 따른 지반 보강 공법 및 장치는, 보강충전재(50)가 그라우팅 팩(40)의 형태를 벗어나지 않고 일정한 형태로 형성됨으로써, 제한된 공간에서 보강충전재(50)가 형성되도록 하는데 특히 유리하다. The ground reinforcing method and apparatus according to the present invention is particularly advantageous in that the reinforcing filler 50 is formed in a constant shape without departing from the shape of the grouting pack 40, thereby forming the reinforcing filler 50 in a limited space.

상기한 본 발명의 바람직한 실시예들은 예시의 목적을 위해 개시된 것이고, 본 발명에 대한 통상의 지식을 가지는 당업자라면 본 발명의 사상과 범위 안에서 다양한 수정, 변경 및 부가가 가능할 것이며, 이러한 수정, 변경 및 부가는 하기의 특허청구범위에 속하는 것으로 보아야 할 것이다. Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having various ordinary knowledge of the present invention will be able to make various modifications, changes and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

도 1은 종래 지반 보강 공법에 의한 지반의 단면도이다. 1 is a cross-sectional view of the ground by the conventional ground reinforcement method.

도 2는 본 발명에 따른 지반 보강 공법에 의한 시공 준비의 단면도이다. 2 is a cross-sectional view of the construction preparation by the ground reinforcement method according to the invention.

도 3은 도 2에서 그라우팅 팩에 보강충전재를 압입한 형태를 도시한 단면도이다. 3 is a cross-sectional view illustrating a form in which the reinforcing filler is pressed into the grouting pack in FIG. 2.

도 4는 본 발명에 따른 지반 보강 공법의 시공을 완료한 단면도이다. 4 is a cross-sectional view of completing the construction of the ground reinforcement method according to the invention.

Claims (4)

지반에 보강충전재를 압입하여 지반을 보강하기 위한 지반 보강 공법에 있어서, In the ground reinforcing method for reinforcing the ground by indenting the reinforcing filler in the ground, (a) 지반을 천공하는 단계; (a) drilling the ground; (b) 상기 천공된 부피보다 큰 부피를 가지는 그라우팅 팩을 상기 천공된 공간 내에 삽입하는 단계; 및 (b) inserting a grouting pack having a volume greater than the perforated volume into the perforated space; And (c) 상기 그라우팅 팩 내에 상기 보강충전재를 압입하여 상기 그라우팅 팩이 팽창함으로써 주위 지반을 강화하는 단계를 포함하는 것을 특징으로 하는 지반 보강 공법. (c) pressurizing the reinforcing filler into the grouting pack to strengthen the ground by expanding the grouting pack. 제 1 항에 있어서, The method of claim 1, 상기 그라우팅 팩의 재질은 PET 또는 PP인 것을 특징으로 하는 지반 보강 공법. Ground reinforcing method, characterized in that the material of the grouting pack is PET or PP. 지반에 보강충전재를 압입하여 보강하기 위한 지반 강화 장치에 있어서, In the ground reinforcing device to press the reinforcing filler to reinforce the ground, 지반에 천공된 공간에 삽입되며, 상기 천공된 공간의 부피보다 큰 부피를 가지는 그라우팅 팩; A grouting pack inserted into the perforated space on the ground and having a volume larger than that of the perforated space; 상기 보강충전재를 상기 그라우팅 팩에 압입하여 상기 그라우팅 팩을 팽창시켜 주위 지반을 강화하는 펌프; 및 A pump that presses the reinforcing filler into the grouting pack to expand the grouting pack to strengthen the surrounding ground; And 상기 그라우팅 팩에 삽입되며, 상기 펌프에 연결되어 상기 보강충전재를 상기 그라우팅 팩으로 전달하는 중공관 형상의 주입구를 포함하는 것을 특징으로 하는 지반 강화 장치. The ground reinforcing device is inserted into the grouting pack, and connected to the pump, characterized in that it comprises a hollow tube-shaped inlet for transferring the reinforcing filler to the grouting pack. 제 3 항에 있어서, The method of claim 3, wherein 상기 그라우팅 팩의 재질은 PET 또는 PP인 것을 특징으로 하는 지반 강화 장치. The ground reinforcing device, characterized in that the material of the grouting pack is PET or PP.
KR1020080000530A 2008-01-03 2008-01-03 A construction method for strengthening the ground using a grouting pack and an apparatus therefor KR20090074854A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130052158A (en) * 2011-11-11 2013-05-22 통진엔지니어링(주) Pile construction method for soft ground
KR101849929B1 (en) * 2017-11-13 2018-04-18 유씨아이테크 주식회사 Injection packer for ground subsidence restoration, reclamation method and apparatus for ground subsidence and using the same
WO2018151583A1 (en) * 2017-02-20 2018-08-23 에이치엔티환경건설개발(주) Soft ground improvement method using high-density polyurethane
KR102028526B1 (en) * 2018-04-18 2019-10-10 동양하이테크산업 주식회사 Injector of filling material for preventing and reinforcing ground subsidence, and prevention and reinforcement method of ground subsidence using the same
KR20200089383A (en) * 2019-01-16 2020-07-27 한국광해관리공단 Method of filling void space with polyurthane foam for emergency treatment
KR20220108575A (en) * 2021-01-27 2022-08-03 한강테크놀러지(주) Method for restoring the settlement of railroad concrete ballast

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130052158A (en) * 2011-11-11 2013-05-22 통진엔지니어링(주) Pile construction method for soft ground
WO2018151583A1 (en) * 2017-02-20 2018-08-23 에이치엔티환경건설개발(주) Soft ground improvement method using high-density polyurethane
KR101849929B1 (en) * 2017-11-13 2018-04-18 유씨아이테크 주식회사 Injection packer for ground subsidence restoration, reclamation method and apparatus for ground subsidence and using the same
KR102028526B1 (en) * 2018-04-18 2019-10-10 동양하이테크산업 주식회사 Injector of filling material for preventing and reinforcing ground subsidence, and prevention and reinforcement method of ground subsidence using the same
KR20200089383A (en) * 2019-01-16 2020-07-27 한국광해관리공단 Method of filling void space with polyurthane foam for emergency treatment
KR20220108575A (en) * 2021-01-27 2022-08-03 한강테크놀러지(주) Method for restoring the settlement of railroad concrete ballast

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