KR102067334B1 - Grouting pipe manufacture method and pipe structure, using grouting construction method - Google Patents

Grouting pipe manufacture method and pipe structure, using grouting construction method Download PDF

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KR102067334B1
KR102067334B1 KR1020180040142A KR20180040142A KR102067334B1 KR 102067334 B1 KR102067334 B1 KR 102067334B1 KR 1020180040142 A KR1020180040142 A KR 1020180040142A KR 20180040142 A KR20180040142 A KR 20180040142A KR 102067334 B1 KR102067334 B1 KR 102067334B1
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South Korea
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check valve
valve
steel pipe
grouting
hole
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KR1020180040142A
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Korean (ko)
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KR20190117073A (en
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송한섭
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송한섭
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • 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
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/02—Setting anchoring-bolts with provisions for grouting
    • E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/001—Improving soil or rock, e.g. by freezing; Injections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2215/00—Details of workpieces
    • B23B2215/72—Tubes, pipes
    • 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

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

Abstract

본 발명은 체크밸브 이탈방지형 그라우팅 강관 제작방법 및 그라우팅 강관, 이를 이용한 그라우팅 시공방법에 관한 것으로서, 그라우팅 강관에 체결된 체크밸브가 밸브공에 안정적인 결합상태를 이루도록 하여 그라우팅 작업 과정에서 내부압력 및 천공타격시 진동에 인한 체크밸브의 이탈을 방지하기 위한 것이다.
이를 실현하기 위한 본 발명의 강관 제작방법은, 그라우팅 강관에 밸브공을 드릴지그를 이용하여 관통 형성시키는 드릴 단계와; 상기 관통 형성이 이루어진 밸브공에 체크밸브를 삽입하는 밸브 삽입단계와; 상기 체크밸브가 삽입된 밸브공 주변에 펀칭홈을 형성시켜서 밸브공 입구부가 축소되면서 체크밸브를 가압시키는 펀칭단계를 포함하는 것을 특징으로 한다.The present invention relates to a manufacturing method and a grouting steel pipe, and a grouting construction method using a check valve departure prevention type grouting steel pipe, the internal pressure and perforation in the grouting process by making the check valve fastened to the grouting steel pipe to achieve a stable coupling state to the valve ball This is to prevent the departure of the check valve due to vibration when hitting.
Steel pipe manufacturing method of the present invention for realizing this, the drill step of forming a through-hole valve hole in the grouting steel pipe using a drill jig; A valve insertion step of inserting a check valve into the valve hole through which the penetration is formed; And a punching step of forming a punching groove around the valve hole into which the check valve is inserted to pressurize the check valve while the valve hole inlet is reduced.

Description

체크밸브 이탈방지형 그라우팅 강관 제작방법 및 그라우팅 강관, 이를 이용한 그라우팅 시공방법{GROUTING PIPE MANUFACTURE METHOD AND PIPE STRUCTURE, USING GROUTING CONSTRUCTION METHOD}Grooving steel pipe manufacturing method and grouting construction method using the same for check valve separation prevention type {GROUTING PIPE MANUFACTURE METHOD AND PIPE STRUCTURE, USING GROUTING CONSTRUCTION METHOD}

본 발명은 그라우팅 강관에 관한 것으로서, 더욱 상세하게는 그라우팅 과정에서 그라우트재의 역류 방지를 위해 결합되는 체크밸브가 내압으로 인하여 이탈되는 현상을 방지하기 위한 체크밸브 이탈방지형 그라우팅 강관 제조방법 및 강관 구조에 관한 것이다.The present invention relates to a grouting steel pipe, and more particularly, to a check valve release preventing grouting steel pipe manufacturing method and steel pipe structure for preventing a check valve coupled to prevent backflow of grout material during grouting due to internal pressure. It is about.

일반적으로 터널 굴착면이나 연약지, 절개지의 지반을 개량 및 보강하기 위해 지반 또는 암반에 천공하고 천공된 공간으로 주입재를 주입하는 그라우팅 주입장치가 사용된다. In general, a grouting injection device is used to drill and inject the injection material into the ground or rock to improve and reinforce the ground of the tunnel excavation surface, soft paper, or incision.

특히, 터널 원주면을 따라 일정 간격으로 천공하여 강관을 삽입하고 그라우트재를 주입하여 지반을 차수 또는 보강하기도 하고, 터널 굴착시 암반에 생기는 크랙 및 공동을 탐지하여 일정 직경의 천공홀을 형성하고, 이 천공홀에 그라우트를 주입하게 된다.In particular, the steel pipe is inserted at regular intervals along the tunnel circumferential surface, and the grout material is injected to order or reinforce the ground, and to detect cracks and cavities in the rock during the excavation of the tunnel, to form a hole having a predetermined diameter. Grout is injected into this drill hole.

즉, 이러한 천공홀에 그라우팅 강관을 삽입시킨 후, 강관에 체결된 체크밸브를 통해 지반으로 그라우트재가 공급되어지게 된다.That is, after the grouting steel pipe is inserted into the drilling hole, the grout material is supplied to the ground through a check valve fastened to the steel pipe.

한편, 그라우팅 강관에 체결되는 체크밸브의 종래 일 예로 국내특허공개 제2016-19572호(2016.02.22 공개)에서는 그라우팅 공법에 적용되는 강관용 체크밸브에 관련된 기술이 개시되어 있다.On the other hand, Korean Patent Publication No. 2016-19572 (published on Feb. 22, 2016) as a conventional example of the check valve fastened to the grouting steel pipe discloses a technology related to the check valve for steel pipe applied to the grouting method.

그러나, 종래기술에서의 체크밸브는 강관에 가공된 체결공에 단순히 억지끼움에 의한 결합이 이루어지게 됨으로, 강관의 직천공 작업시 타격에 의한 진동에 있어 밸브이탈 및 그라우트재 공급 과정에서 강관 내압에 의한 체크밸브의 이탈이 발생되는 문제점이 있었으며, 이로 인해 강관 내부로 그라우트재가 다시 역류하여 유입되는 문제점이 발생된다.However, since the check valve in the prior art is made by simply fitting the fastening hole processed in the steel pipe, the valve is released in the vibration caused by the impact during the direct drilling of the steel pipe and the internal pressure of the steel pipe in the grout material supply process There was a problem that the departure of the check valve caused by this, thereby causing a problem that the grout material flows back into the steel pipe flows back.

국내특허공개 제2016-19572호(2016.02.22 공개)Domestic Patent Publication No. 2016-19572 (published Feb. 22, 2016)

본 발명은 상기한 종래 기술에서의 문제점을 개선하기 위해 제안된 것으로서, 체크밸브의 체결상태가 안정적으로 유지될 수 있도록 함으로서 체크밸브의 이탈 현상이 방지되어질 수 있도록 하는데 목적이 있다.The present invention has been proposed to improve the above problems in the prior art, and an object of the present invention is to prevent the phenomena of departure of the check valve by keeping the fastening state of the check valve stable.

상기 목적을 이루기 위한 본 발명의 그라우팅 강관 제작방법은, 그라우팅 강관에 밸브공을 드릴지그를 이용하여 관통 형성시키는 드릴 단계와; 상기 관통 형성이 이루어진 밸브공에 체크밸브를 삽입하는 밸브 삽입단계와; 상기 체크밸브가 삽입된 밸브공 주변에 펀칭홈을 형성시켜서 밸브공 입구부가 축소되면서 체크밸브를 가압시키는 펀칭단계를 포함하는 것을 특징으로 한다.Grouting steel pipe manufacturing method of the present invention for achieving the above object, the drill step of forming a through-hole using a drill jig valve ball in the grouting steel pipe; A valve insertion step of inserting a check valve into the valve hole through which the penetration is formed; And a punching step of forming a punching groove around the valve hole into which the check valve is inserted to pressurize the check valve while the valve hole inlet is reduced.

이러한 본 발명은, 그라우팅 강관에 체결된 체크밸브가 밸브공에 안정적인 결합상태를 이루도록 함으로, 그라우팅 작업 과정에서 내부압력 및 천공타격시 진동에 인한 체크밸브의 이탈 및 이로 인한 그라우트재 역류현상이 방지되어질 수 있는 효과를 나타낸다.The present invention is to ensure that the check valve fastened to the grouting steel pipe to achieve a stable coupling state to the valve hole, to prevent the departure of the check valve due to the vibration during internal pressure and punching strike during the grouting operation and thereby the back flow of grout material It can have an effect.

또한, 밸브공 가공과정에서 강관 내벽면에 Burr의 발생이 방지되어질 수 있는 이점을 나타낸다.In addition, it shows the advantage that the generation of burr on the inner wall surface of the steel pipe in the process of the valve hole can be prevented.

도 1은 본 발명의 일 실시 예에 따른 밸브공 형성을 위한 드릴 과정 공정도.
도 2는 본 발명에서 밸브공에 체크밸브가 안착되는 공정도.
도 3은 본 발명에서 밸브공에 펀칭과정 공정도.
도 4는 본 발명에서 밸브공에 체크밸브가 체결된 상태 상세 단면도.
도 5는 본 발명에서의 체크밸브 단면 구조도.
도 6은 본 발명의 체크밸브가 체결된 그라우팅 강관 측면 구조도.
도 7은 본 발명의 다른 실시 예에 따른 체크밸브 단면 구조도.
도 8은 본 발명의 또 다른 실시 예에 따른 체크밸브 체결부 단면 구조도.1 is a drill process process diagram for forming a valve hole according to an embodiment of the present invention.
Figure 2 is a process of seating the check valve in the valve ball in the present invention.
Figure 3 is a process for punching the valve hole in the present invention.
Figure 4 is a detailed cross-sectional view of the check valve is fastened to the valve ball in the present invention.
5 is a cross-sectional view of the check valve in the present invention.
Figure 6 is a side view of the grouting steel pipe fastening check valve of the present invention.
7 is a cross-sectional view of the check valve according to another embodiment of the present invention.
Figure 8 is a cross-sectional structural view of the check valve fastening portion according to another embodiment of the present invention.

이하, 본 발명의 구체적인 실시 예를 첨부 도면을 참조하여 상세히 살펴보기로 한다.Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

먼저, 본 발명의 실시 예에 따른 그라우팅 강관의 체크밸브 체결공 가공 및 결합과정을 도 1 내지 도 5를 통해 살펴보면 다음과 같다.First, the check valve fastening hole processing and coupling process of the grouting steel pipe according to the embodiment of the present invention will be described with reference to FIGS. 1 to 5.

<드릴 가공단계>(ST 1)<Drill Machining Steps> (ST 1)

먼저, 그라우팅 강관(10)에 밸브공(11)을 드릴(100)을 이용하여 관통 형성시키게 된다.First, the valve hole 11 is formed in the grouting steel pipe 10 by using the drill 100.

즉, 이때에는 도 1에서와 같이 드릴(100)을 하강시켜서 밸브공(11)을 형성시키게 되는데, 밸브공(11)의 내측 하단부에 체크밸브(20)의 안착위치 지지를 위한 걸림턱(11b)이 돌출 형성되어질 수 있도록 드릴(100)의 하강 높이를 정밀하게 제한하게 된다.That is, in this case, as shown in FIG. 1, the drill 100 is lowered to form the valve hole 11, and the locking step 11b for supporting the seating position of the check valve 20 at the inner lower end of the valve hole 11. ) To precisely limit the falling height of the drill 100 to be formed.

따라서, 드릴(100)이 완전 관통되는 것을 방지함으로서 걸림턱(11b)을 형성시키게 되며, 이에 따라 완전 관통시 강관(10)의 내변면에 Burr의 발생 또한 방지할 수 있는 이점을 나타낸다.Therefore, by preventing the drill 100 is completely penetrated to form a locking step (11b), thereby showing the advantage that can also prevent the occurrence of Burr on the inner surface of the steel pipe 10 during complete penetration.

<밸브 삽입단계>(ST 2)<Valve insertion stage> (ST 2)

이와 같이 밸브공(11)의 형성이 완료되면, 밸브공(11)에 체크밸브(20)를 삽입하게 된다.When the formation of the valve hole 11 is completed as described above, the check valve 20 is inserted into the valve hole 11.

즉, 이때에는 도 2에서와 같이 체크밸브(20)의 하단부 둘레를 따라 일정 각도의 경사면을 이루는 안착홈(21)이 형성되어져 있으므로, 체크밸브(20)를 밸브공(11)에 삽입하는 과정에서 걸림턱(11b)에 의해 안착홈(21)이 걸려져 안착이 이루어짐으로서 안정적인 결합상태를 유지할 수 있게 된다.That is, in this case, as shown in FIG. 2, since the seating groove 21 is formed along the circumference of the lower end of the check valve 20 to form an inclined surface at a predetermined angle, the process of inserting the check valve 20 into the valve hole 11. In the seating groove 21 is caught by the locking jaw (11b) is made to be able to maintain a stable coupling state.

<펀칭단계>(ST 3)<Punching Step> (ST 3)

이후, 체크밸브(20)가 삽입된 밸브공(11) 주변에 3~6개소의 펀칭홈(11a)을 형성시켜서 밸브공(11)의 입구부가 축소되면서 체크밸브(20)의 상단부를 가압시키는 펀칭 단계를 실시한다.Thereafter, three to six punching grooves 11a are formed around the valve hole 11 into which the check valve 20 is inserted, thereby reducing the inlet of the valve hole 11 to press the upper end of the check valve 20. Perform the punching step.

즉, 이때에는 도 3에서와 같이 그라우팅 강관(10)의 외벽면에서 펀칭돌부(210)가 돌출 구비된 펀칭지그(200)를 압착시켜서 펀칭홈(11a)을 형성시킴으로서, 도 4에서 나타내어지는 바와 같이 밸브공(11) 입구부의 변형이 발생되면서 이탈방지턱(11c)이 돌출 형성되어지게 된다. 이때, 체크밸브(20) 하우징은 합성수지 재질을 이루고 있기 때문에 이탈방지턱(11c)에 의해 해당 부위에 변형이 발생되어질 수 있게 된다.That is, at this time, as shown in Figure 4 by forming a punching groove (11a) by pressing the punching jig 200 is provided with a punching protrusion 210 protruding from the outer wall surface of the grouting steel pipe 10, as shown in FIG. As the deformation of the inlet portion of the valve hole 11 occurs, the departure prevention jaw 11c is formed to protrude. At this time, since the housing of the check valve 20 is made of a synthetic resin, deformation may be generated at a corresponding portion by the release preventing jaw 11c.

도 5는 본 실시 예에서의 체크밸브(20) 단면 구조를 나타낸 것으로서, 도면부호 23은 개폐 구동이 이루어지는 고무마개이고, 24는 고무마개(23)의 이탈 방지를 위한 지지다리를 각각 나타낸다.5 shows a cross-sectional structure of the check valve 20 in the present embodiment, reference numeral 23 denotes a rubber stopper for opening and closing driving, and 24 denotes a support leg for preventing the rubber stopper 23 from being separated.

이와 같이 체크밸브(20)의 강관 체결이 완료된 본 발명의 그라우팅 강관(10)은 지반의 천공홀에 삽입하여 그라우팅재를 주입시킴으로서 체크밸브(20)를 통한 그라우트재의 주입이 이루어지게 되며, 이때 체크밸브(20)의 이탈이 방지되는 가운데 그라우팅 작업이 효율적으로 실시되어질 수 있게 된다.As such, the grouting steel pipe 10 of the present invention, in which the fastening of the check valve 20 is completed, is injected into the boring hole of the ground to inject the grouting material into the grouting material through the check valve 20, and the check While the detachment of the valve 20 is prevented, the grouting operation can be performed efficiently.

따라서, 본 발명에서는 그라우팅 강관(10)에 체결된 체크밸브(20)가 밸브공(11)에 안정적인 결합상태를 이루게 됨으로, 그라우팅 작업 과정에서 내부압력 및 천공타격시 진동에 인한 체크밸브(20)의 이탈 및 이로 인한 그라우트재 역류현상이 방지되어질 수 있게 됨을 알 수 있다.Therefore, in the present invention, since the check valve 20 coupled to the grouting steel pipe 10 forms a stable coupling state to the valve hole 11, the check valve 20 due to vibration during internal pressure and punching strike in the grouting operation process. It can be seen that the departure and the resulting grout material backflow can be prevented.

한편, 도 7은 본 발명의 다른 실시 예에 따른 구조를 나타낸 것으로서, 체크밸브(20)의 측벽 상부에는 밸브공(11)과의 마찰력 증대를 위한 마찰층(25)이 형성된 것을 확인할 수 있다. 이때, 마찰층(25)은 우레탄 30~50중량%, 실리카유리 20~40중량%, 메틸메타아크릴레이트 10~30중량%의 혼합 조성을 이루게 된다.On the other hand, Figure 7 shows a structure according to another embodiment of the present invention, it can be seen that the friction layer 25 for increasing the friction force with the valve hole 11 on the side wall of the check valve 20 is formed. At this time, the friction layer 25 is made of a mixture composition of 30 to 50% by weight of urethane, 20 to 40% by weight of silica glass, 10 to 30% by weight of methyl methacrylate.

이와 같은 마찰층(25)이 형성되게 되면, 펀칭과정에서 이탈방지턱(11c)에 의한 변형이 요이하게 이루어짐과 함께, 마찰층(25)이 밸브공(11) 내벽면과 마찰력을 유지하게 됨으로서 더욱 강한 체결상태가 유지되어질 수 있게 된다.When such a friction layer 25 is formed, the deformation by the separation prevention jaw (11c) in the punching process is made easy, the friction layer 25 is further maintained by maintaining the friction force with the inner wall surface of the valve hole (11). Strong fastening can be maintained.

특히, 실리카유리는 우레탄 입자의 결합력을 향상시켜서 마찰층(25)의 탈락 현상을 방지하고, 메틸메타아크릴레이트는 실리카유리의 내열기능을 향상시킴과 함께 마찰층(25)의 내구성을 증대시키는 기능을 수행하게 된다.In particular, the silica glass improves the binding force of the urethane particles to prevent the falling off of the friction layer 25, the methyl methacrylate improves the heat resistance of the silica glass and increases the durability of the friction layer 25 Will be performed.

또한, 도 8은 본 발명의 또 다른 실시 예를 나타낸 것으로서, 상기 제작 과정에서 펀칭단계(ST 3) 후에는 펀칭홈(11a)에 은용액(12)을 충진시킴으로서 이탈방지턱(11c)이 안정적으로 유지되어지게 된다.In addition, Figure 8 shows another embodiment of the present invention, after the punching step (ST 3) in the manufacturing process by filling the silver solution 12 in the punching groove (11a) by the separation prevention jaw (11c) is stable Will be maintained.

즉, 펀칭지그(200)에 의한 펀칭홈(11a) 및 이탈방지턱(11c)이 형성된 직후 펀칭홈(11a) 부위에 은용액(12)을 충진 후 고형화 시킴으로서, 내측으로 돌출 형성된 이탈방지턱(11c)이 다시 원상태로 복귀되는 현상을 방지함과 함께 체크밸브(20)에 대한 가압력을 안정적으로 유지시킬 수 있게 된다. 이러한 은용액(12)은 모든 펀칭홈(11a)에 충진시키지 않고 일부 펀칭홈(11a) 에만 충진이 이루어질 수 있게 된다.That is, by filling the silver solution 12 in the punching groove 11a portion immediately after the punching groove 11a and the dropping stop 11c by the punching jig 200 are formed, the dropping stop 11c protrudes inwardly. This prevents the phenomenon of returning to the original state, and it is possible to stably maintain the pressing force on the check valve 20. The silver solution 12 may be filled in only some of the punching grooves 11a without filling all the punching grooves 11a.

10 : 그라우팅 강관 11 : 밸브공
11a: 펀칭홈 11b: 걸림턱
11c: 이탈방지턱 20 : 체크밸브
21 : 안착홈 23 : 고무마개
24 : 지지다리 25 : 마찰층
100 : 드릴 200 : 펀칭지그
210 : 펀칭돌부10: grouting steel pipe 11: valve ball
11a: punching groove 11b: jamming jaw
11c: release prevention jaw 20: check valve
21: seating groove 23: rubber stopper
24: support leg 25: friction layer
100: drill 200: punching jig
210: punching protrusion

Claims (6)

그라우팅 강관(10)에 밸브공(11)을 드릴(100)을 이용하여 관통 형성시키되, 밸브공(11)의 내측단부에 체크밸브(20)의 안착위치 지지를 위한 걸림턱(11b)이 돌출 형성되도록 드릴(100)의 하강 높이 제한이 이루어지는 드릴 가공단계와;(ST 1)
상기 관통 형성이 이루어진 밸브공(11)에 체크밸브(20)를 삽입하는 밸브 삽입단계와;(ST 2)
상기 체크밸브(20)가 삽입된 밸브공(11) 주변에 펀칭홈(11a)을 형성시켜서 밸브공(11)의 입구부가 축소되면서 체크밸브(20)의 상단부를 가압시키되, 그라우팅 강관(10)의 외벽면에서 펀칭돌부(210)가 돌출 구비된 펀칭지그(200)를 압착시켜서 펀칭홈(11a)을 형성시킴으로서, 밸브공(11) 입구부에 이탈방지턱(11c)을 돌출 형성시키는 펀칭단계;(ST 3)
를 포함하는 것을 특징으로 하는 체크밸브 이탈방지형 그라우팅 강관 제작방법Although the valve hole 11 is formed to penetrate the grouting steel pipe 10 using the drill 100, the locking step 11b for supporting the seating position of the check valve 20 protrudes at the inner end of the valve hole 11. And drill processing step is made so that the height of the falling of the drill 100 to be formed; (ST 1)
A valve insertion step of inserting the check valve 20 into the valve hole 11 in which the penetration is formed; (ST 2)
The punching groove 11a is formed around the valve hole 11 into which the check valve 20 is inserted to press the upper end of the check valve 20 while the inlet portion of the valve hole 11 is reduced, and the grouting steel pipe 10 is formed. A punching step of forming a punching groove 11a by compressing the punching jig 200 with the punching protrusion 210 protruding from the outer wall surface thereof, and protruding the release stop 11c into the valve hole 11 inlet; (ST 3)
Check valve departure prevention type grouting steel pipe manufacturing method comprising a 삭제delete 삭제delete 다수의 체크밸브(20)가 밸브공(11)에 결합되는 그라우팅 강관(10)에 있어서,
상기 밸브공(11)의 하부에는 체크밸브(20)의 안착위치 지지를 위한 걸림턱(11b)이 돌출 형성되되, 상기 걸림턱(11b)은 상기 청구항 1에서 드릴(100)의 하강 높이를 제한하는 드릴 가공단계를 통해 형성이 이루어지고
상기 체크밸브(20)의 하단부 둘레를 따라 상기 걸림턱(11b)에 안착되어질 수 있도록 일정 각도의 경사면을 이루는 안착홈(21)이 형성되며;
상기 밸브공(11)의 상부에는 체크밸브(20)의 외부 이탈 방지를 위한 이탈방지턱(11c)이 돌출 형성되고;
상기 그라우팅 강관(10)의 외표면에는 밸브공(11) 주변에 펀칭홈(11a)을 형성시킴으로서 상기 이탈방지턱(11c)이 형성될 수 있도록 하는 구조를 이루는 것을 특징으로 하는 체크밸브 이탈방지형 그라우팅 강관.In the grouting steel pipe 10 in which a plurality of check valve 20 is coupled to the valve hole 11,
A locking jaw 11b for supporting the seating position of the check valve 20 is protrudingly formed at the lower portion of the valve hole 11, and the locking jaw 11b restricts the falling height of the drill 100 in claim 1. Forming is done through drill processing
A seating groove 21 is formed to form an inclined surface at an angle so as to be seated on the locking jaw 11b around the lower end of the check valve 20;
An escape prevention jaw (11c) for preventing the external departure of the check valve 20 is formed on the upper portion of the valve hole (11) protruding;
The outer surface of the grouting steel pipe 10 is formed by forming a punching groove (11a) around the valve hole 11 to form the structure so that the release preventing jaw (11c) can be formed, characterized in that the check valve separation prevention grouting Steel pipe. 삭제delete 청구항 1의 제작방법에 의해 제작된 그라우팅 강관을 지반의 천공홀에 삽입하여 그라우팅재를 주입시킴으로서 체크밸브의 이탈이 방지되는 가운데 그라우팅 작업이 효율적으로 실시되어지게 됨을 특징으로 하는 체크밸브 이탈방지형 그라우팅 강관을 이용한 그라우팅 시공방법The grouting operation prevents the check valve from being detached by inserting the grouting steel pipe manufactured by the manufacturing method of claim 1 into the boring hole of the ground to prevent the check valve from falling off. Grouting method using steel pipe
KR1020180040142A 2018-04-06 2018-04-06 Grouting pipe manufacture method and pipe structure, using grouting construction method KR102067334B1 (en)

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KR102266397B1 (en) * 2019-07-18 2021-06-17 이광영 Steel pipe for steel pipe multi stage grouting and method of manufacturing the same

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Publication number Priority date Publication date Assignee Title
KR102521178B1 (en) * 2022-08-04 2023-04-12 송한섭 Separable grouting steel pipe manufacturing method and tunnel construction method using the grouting steel pipe manufactured thereby

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