KR20000074830A - Duplication steel pipe grouting method in construction field - Google Patents

Duplication steel pipe grouting method in construction field Download PDF

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KR20000074830A
KR20000074830A KR1019990019042A KR19990019042A KR20000074830A KR 20000074830 A KR20000074830 A KR 20000074830A KR 1019990019042 A KR1019990019042 A KR 1019990019042A KR 19990019042 A KR19990019042 A KR 19990019042A KR 20000074830 A KR20000074830 A KR 20000074830A
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steel pipe
pipe
lumen
double
outer steel
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KR1019990019042A
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Korean (ko)
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KR100310873B1 (en
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김희영
동용원
이종운
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김희영
지오 컨설턴트 주식회사
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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

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

Abstract

PURPOSE: A construction method and an apparatus for grouting of double steel pipe are provided to generate difference in gel speed of the materials which are projected into the relaxation area and the non-relaxation area, so that the charging and closing efficiency of relaxation void are improved in the relaxation area, and the efficiency of reinforcement is improved in the non-relaxation area. CONSTITUTION: A construction method comprises the steps of; inserting an external pipe(1) into the punched hole; installing a double swivel(4) to feed grout-material into the external/internal pipe; caulking to prevent the backward flow between punched hole and external pipe; pressuring and transferring the gel reactant and the main materials into the external/internal pipe; feeding the quick-setting hardener in the relaxation area, and feeding the slow-setting material in the non-relaxation area; and finishing the first feed when the double steel pipe reaches the critical pressure. An apparatus comprises; an external pipe which has hollow and strainers(5); internal pipes(2) which are installed at regular intervals in the external pipe, and has strainers; and a double steel pipe(3) which has a double swivel.

Description

이중 강관 그라우팅 시공방법 및 장치{Duplication steel pipe grouting method in construction field}Duplication steel pipe grouting method in construction field

본 발명은 지하굴착공법(터널공사의 NATM 공법 등)에 의한 건설시공 중 불안정한 지반조건에 대응하여 대상지반의 안정 및 자립을 도모하기 위해 굴착전에 시공하는 그라우트 공법에 관한 것으로, 지반특성의 차이를 고려하여 지반에 압송,투입되는 그라우트재의 혼합과정을 위치별로 차등화시키도록 하는 이중 강관 그라우팅 시공방법 및 장치에 관한 것이다.The present invention relates to a grout method that is constructed before excavation in order to promote the stability and independence of the target ground in response to unstable ground conditions during construction by underground excavation method (NATM method of tunnel construction, etc.) The present invention relates to a method and apparatus for constructing a double steel pipe grouting to differentiate the mixing process of the grout material fed and injected into the ground in consideration of location.

기존의 터널 보강방법은 강관 보강형 다단 그라우팅 공법과 이를 기초로 하여 천공홀의 유지가 어려운 극연약 지반을 대상으로 하는 직천공 강관 다단 그라우팅 공법이 있다.Existing tunnel reinforcement methods include steel pipe reinforcement multi-stage grouting method and direct drilling steel pipe multi-stage grouting method for ultra soft ground, which is difficult to maintain perforated hole based on this.

강관 보강형 다단 그라우팅공법은 한국 건설기술연구원의 협조하에 체계화되었음에도 불구하고 시공현장에서의 무분별한 적용으로 인하여 기본원리가 무시되는 등 연구개발 취지와 다르게 운용되고 있다.Although the steel pipe reinforcement multi-stage grouting method is systemized under the cooperation of the Korea Institute of Construction Technology, it is operated differently from the intent of R & D such that the basic principle is ignored due to indiscriminate application at the construction site.

강관 다단 시공방법을 포함하는 직천공 강관 다단 그라우팅공법은 특허 166423호로 특허되어 있으나 극연약층을 대상으로 적용되는 공법이기 때문에 건설현장에서 시공시 대상범위가 한정되고, 시공비용이 고가인 관계로 경제성 확보가 어려운 것이다.Direct pipe steel multi-stage grouting method including steel pipe multi-stage construction method is patented as Patent No. 166423, but it is applied to the very weak layer, so the scope of construction is limited at the construction site and the economic cost is high due to the high cost of construction. Would be difficult.

또한 상기된 시공법은 시공원리, 방법이 복잡하여 시공자의 기술적접근이 어려워 시공효과의 완벽성을 추구하기가 곤란(1차실링의 결손, 다단식 주입의지 결여 등)하고, 공법이 적용되어야 할 지반의 무분별한 선택으로 비교적 과다한 건설비용이 투입되고 있는 실정이다.In addition, the construction method described above is difficult to pursue the perfection of construction effects due to the difficulty of the technical approach of the contractor due to the complexities and methods (defect of primary sealing, lack of willingness of multistage injection), and Reckless choice is a relatively excessive cost of construction.

특히 발파공법이나 인력 및 기계굴착에 의한 터널굴착 예정지반은 이완영역과 비이완영역(안정지반)으로 크게 대별되는데 터널굴착시 막장주변부를 구성하고 있는 암반의 이완영역은 굴착에 의해 변형이 발생한 후 후보강(Shotcrete, Rock bolt, Steel rib 등)에 의해 변위가 수렴되나 이미 원지반이 보유하고 있는 토층 및 암반의 기능이 현저히 감소된다.Particularly, the tunnel excavation ground by blasting method or manpower and mechanical excavation is roughly divided into the relaxation zone and the non-relaxation zone (stable ground). The tunnel loosening zone, which constitutes the periphery of the membrane, is deformed by excavation. Displacement is converged by candidate steels (Shotcrete, Rock bolt, Steel rib, etc.), but the function of soil and rock already possessed by the ground is significantly reduced.

즉 기존의 시공법은 터널굴착 예정지반의 이완영역과 비이완영역의 구분없이 동일한 매체로 간주하여 그라우트재를 투입시킴으로써 지반의 보강효과를 효율적으로 달성하기 어려운 것이다.In other words, the existing construction method is difficult to achieve the reinforcement effect of the ground efficiently by introducing grout material, considering the same medium without dividing the relaxation and non-relaxation areas of the tunnel excavation ground.

본 발명은 터널굴착 예정지반의 지반특성을 고려하여 지중에 압송, 투입되는 그라우트재의 혼합과정을 위치별로 차등화하여 터널의 막장근접 구간인 이완영역에서는 급결성의 경화제 주입을 유도하고, 이완영역 전방의 지반인 비이완영역에서는 완결제 주입을 유도시킴과 동시에 하향식 주입원리를 달성하여 그라우트재의 침투효율 향상과 보강효과를 증대시키도록 하는 것이다.The present invention differentiates the mixing process of grout material fed and injected into the ground in consideration of the ground characteristics of the ground to be excavated in tunnels to induce rapid injection of hardener in the relaxation region, which is close to the tunnel, in front of the relaxation region. In the non-relaxed area, which is the ground, it induces the injection of a complete agent and at the same time achieves the top-down injection principle to improve the penetration efficiency and reinforcement effect of the grout material.

특히 본 발명은 이중강관 구조를 채택하되 그라우트재 주입강관을 변경시켜 그라우트재를 차등 혼합시킴으로써 급결제의 이완영역주입과 완결제의 비이완영역주입을 1회로 주입되게 하여 시공성 및 경제성을 확보하는 한편 그라우트재 주입에 따른 시공방법을 단순화시키는 것이다.In particular, the present invention adopts a double steel pipe structure, but by changing the grout material injection steel pipe to differentially mix the grout material to the injection of the relaxation zone injection of the fastener and the non-relaxation zone injection of the complete agent to ensure the construction and economic efficiency while It is to simplify the construction method according to the grout material injection.

이러한 본 발명은 터널굴착 예정지점에 천공된 천공구멍에 내강관이 내장된 외강관을 삽입시킨 후 외강관과 내강관에 겔화반응제와 주재료를 각각 압송시키되 내강관과 외강관의 스트레나 직경을 달리하여 주재료와 겔화반응제의 혼합비율을 이완영역과 비이완영역에서 달리 혼합되게 하므로써 이완영역에서는 급결성의 경화제가 주입되게 하고 비이완영역에서는 완결제가 주입되게 하되 다단식이 아닌 1회압송으로 그라우트제 주입이 완료되게 한 것이다.The present invention is to insert the outer steel pipe with the inner lumen is inserted into the drilled hole at the planned point of the tunnel excavation, and then to press the gelling reagent and the main material into the outer and inner tubes, respectively, different diameters of the strainer of the inner and outer tubes The mixing ratio of the main material and the gelling reagent is mixed differently in the relaxation zone and the non-relaxation zone, so that the fastening hardener is injected in the relaxation zone and the final agent is injected in the non-relaxation zone, but the grouting agent is supplied in a single pressure transmission, not in multiple stages. The injection is completed.

도 1 은 본 발명의 이중강관 삽입 모식도1 is a schematic diagram of a double steel pipe insertion of the present invention

도 2 는 본 발명의 이중강관 단면도2 is a cross-sectional view of the double steel pipe of the present invention

도 3 은 본 발명의 차등구경 스트레나 단면도Figure 3 is a differential diameter strain cross section of the present invention

도 4 는 본 발명은 동일구경 스트레나 단면도4 is a cross-sectional view of the same diameter strain of the present invention

[도면의 주요부분에 대한 부호의 설명][Explanation of symbols on the main parts of the drawings]

1 : 외강관 2 : 내강관1: outer steel pipe 2: inner steel pipe

3 : 이중강관 4 : 더블쉬이벨3: double steel pipe 4: double shibel

5,6,6' : 스트레나5,6,6 ': Strainer

본 발명의 다중강관 장치는 소정길이의 중공형상을 갖고 외주연에 일정간격으로 스트레나(5)가 형성되는 외강관(1)과, 상기 외강관(1)에 일정간격을 두고 삽입되며 외강관(1)과 동일위치에 스트레나(6)(6')가 형성되는 내강관(2)으로 이루어진 이중강관(3)과, 상기 외강관(1)과 내강관(2)에 각기 다른 그라우트재를 주입하는 더블쉬이벨(4)로 이루어지며 상기 외강관(1)과 내강관(2)에 형성된 스트레나(5)(6)(6')의 구경에 따라 위치별로 각기 다른 비율로 혼합되게 구성된다.The multi-steel pipe device of the present invention has a hollow shape of a predetermined length and the outer steel pipe (1) is formed at a predetermined interval on the outer periphery and the outer steel pipe (1), and inserted into the outer steel pipe (1) at a predetermined interval and the outer steel pipe ( Inject a different grout material into the double steel pipe (3) consisting of a lumen pipe (2) formed with a strainer (6) (6 ') in the same position as 1), and the outer steel pipe (1) and the lumen pipe (2) It consists of a double shibel 4 and is configured to be mixed in different ratios for each position according to the diameter of the strainer (5) (6) (6 ') formed in the outer steel pipe (1) and the lumen pipe (2).

여기서 외강관(1)과 내강관(2)에 형성되는 스트레나(5)(6)(6')는 인접스트레나와 90°각도를 갖고 형성되며, 외강관(1)에 형성된 스트레나(5)는 위치에 관계없이 동일직경을 갖도록 하고 내강관(2)에 형성된 스트레이너(6)(6')는 이완영역에 위치되는 쪽의 직경이 도 3 과 같이 도 4 보다는 작도록 한다.Here, the strainers 5, 6, 6 ′ formed in the outer steel tube 1 and the lumen 2 are formed at an angle of 90 ° with the adjacent strainer, and the strainers 5 formed in the outer steel tube 1 Irrespective of the position, it has the same diameter and the strainers 6 and 6 'formed in the lumen 2 have a diameter smaller than that of FIG. 3 as shown in FIG. 3.

본 발명은 더블쉬이벨(4)을 통하여 외강관(1)과 내강관(2)에 각기 다른 주입제를 압송하되 내강관(2)에서의 분사속도 차이로 외강관(1)으로 압송되는 재료와 혼합비가 다르게 작용하여 지반에 주입되도록 하므로써 그라우트 시공을 완료하게 된다.The present invention is to press the different injection to the outer steel pipe (1) and the lumen pipe (2) through the double sieve (4), but the material is fed to the outer steel pipe (1) at the injection speed difference in the lumen pipe (2) The grout construction is completed by allowing the mixing ratio to be injected into the ground.

본 발명의 이중 강관 그라우팅 시공방법은 천공된 천공구멍에 내강관(2)이 내장된 외강관(1)을 삽입하는 과정과, 외강관(1)과 내강관(2)에 그라우트재 주입을 위한 더블쉬이벨(4)을 설치하는 과정과, 천공구멍과 외강관(1)사이에 그라우트재의 역류를 방지하기 위한 코킹과정과, 외강관(1)과 내강관(2)에 겔화반응제와 주재료의 각기 다른 주입재를 압송시키는 과정과, 주재료의 분사속도 차이로 겔화반응제와의 혼합량에 차이가 발생하여 이완영역에는 급결성 그라우트제가 주입되고 비이완영역에는 완결성 그라우트제가 주입되는 과정으로 이루어진다.The double steel pipe grouting construction method of the present invention is a process for inserting the outer steel pipe (1) with the built-in lumen pipe (2) in the perforated boring hole, and for injecting grout material into the outer steel pipe (1) and lumen pipe (2) The process of installing the double shibel (4), the caulking process to prevent the backflow of grout material between the drilled hole and the outer steel pipe (1), the gelling agent and the main material in the outer steel pipe (1) and the inner steel pipe (2) The injection process of the different injection material of the, and the difference in the amount of mixing with the gelling reagent due to the difference in the injection speed of the main material, the fastening grout agent is injected into the relaxation zone and the final grout agent is injected into the non-relaxation zone.

본 발명은 외강관(1)내부에 내강관(2)을 내장시켜 이중으로 설치하되 각각의 강관 내부로 겔화반응제와 주재료가 압송되도록 하고, 외강관(1)과 내강관(2)에는 동일간격으로 스트레나(5)(6)를 설치하되 내강관(2)에는 스트레나(6)(6')를 위치별로 직경이 다르게 하여 주재료와 겔화반응제의 압송시 강관을 경유하며 동시에 혼합이 일어나게 하되 이완영역에서는 급결제로 혼합 주입되게 하고 비이완영역에서는 완결제로 혼합 주입되게 한 것이다.The present invention is to install the inner lumen pipe (2) inside the outer steel pipe (1) to install a double, so that the gelling reagent and the main material is pumped into each steel pipe, the same for the outer steel pipe (1) and the lumen pipe (2) Strainers (5) and (6) are installed at intervals, but in the lumen pipe (2), the strainers (6) and (6 ') have different diameters according to positions so that the mixing takes place at the same time through the steel pipe when the main material and the gelling reagent are pressed. In the loosening zone, the mixture is injected into the fastener and in the non-relaxing zone, the mixture is injected into the finishing agent.

내강관(2)의 스트레나(6)(6')직경은 위치에 따라 상이하고 외강관(1)의 스트레나(5)직경은 동일하므로 내강관(2)의 직경이 좁은 스트레나(6)에서 분사되는 주입재인 A액의 분사속도가 직경이 큰 스트레나(6')에서 분사되는 A액의 분사속도 보다 빠르게 되고, 이에 따라 외강관(1)의 주입제인 B액에 합류되는 A액의 양이 상대적으로 많이 분출시키게 되어 경화성 급결성 그라우트제로 이완영역에 주입된다.Since the diameters of the strainers 6 and 6 'of the lumen 2 differ from each other and the diameters of the strainers 5 of the outer lumen 1 are the same, the diameter of the lumen 2 is injected from the narrow strainer 6 of the narrow lumen 2. The injection speed of the liquid A, which is the injection material, becomes faster than the injection speed of the liquid A, which is injected from the large strainer 6 ', and thus the amount of the liquid A that joins the liquid B, which is the injection agent of the outer steel tube 1, is relatively high. It is blown out a lot, and is injected into the relaxation area with a hardening fastening grout agent.

반대로 비이완영역에서는 A액의 혼합량이 적어지므로 완결성 그라우트제로 비이완영역에 주입되게 된다.On the contrary, in the non-relaxed region, the amount of the A liquid is reduced, so that the non-relaxed region is injected into the non-relaxed region with a complete grout agent.

즉 내강관(2)으로 압송되는 A액의 분사속도에 따라 외강관(1)으로 압송되는 B액의 재료 혼합비율이 다르게 되고 이에 따라 급결제와 완결제의 주입이 이루어진다.That is, the mixing ratio of the material of the liquid B, which is conveyed to the outer steel pipe 1, varies depending on the injection speed of the liquid A, which is pumped into the lumen 2, and thus the rapid and complete agents are injected.

따라서 전체 시공대상 구간을 1회에 주입시공이 종료되는 특징을 가지며 이상적인 하향식 주입시공 원리를 달성한다.Therefore, the injection construction is completed at once in the entire construction target section and achieves the ideal top-down injection construction principle.

이러한 본 발명은 터널굴착 예정지반을 통상의 천공기계를 이용하여 천공구멍을 뚫고 그 곳에 외강관(1)과 내강관(2)으로 이루어진 이중강관(3)을 끼워 넣는다.In the present invention, the drilling ground is drilled using a conventional drilling machine, and the double steel pipe 3 composed of the outer steel pipe 1 and the lumen pipe 2 is inserted therein.

여기서 천공구멍은 터널굴착 예정지반의 상향 경사로 우산형과 같이 뚫려지게 되며 상기 천공구멍에 이중강관(3)이 삽입되어진다.Here, the drilling hole is drilled like an umbrella in an upward slope of the tunnel excavation planned ground, and the double steel pipe 3 is inserted into the drilling hole.

터널굴착 예정지반은 터널굴착시 영향을 받은 이완영역과 영향을 받지 않은 비이완영역으로 구분되며 본 발명은 이완영역과 비이완영역을 구분하여 이완영역에는 급결형 그라우트제, 비이완영역에는 완결형 그라우트제를 단 1회로 주입하는 것이다.The tunnel excavation ground is divided into the relaxed and non-relaxed zones affected by the tunnel excavation, and the present invention distinguishes the relaxed and non-relaxed zones. The grout is injected only once.

이중강관(3)은 외강관(1)과 상기 외강관(1)에 내장된 내강관(2)으로 이루어지고 외강관(1)에는 일정간격을 두고 동일직경의 스트레나(5)를 설치하며, 내강관(2)에는 상기 외강관(1)의 스트레나(5)와 동일위치에 직경이 다른 스트레나(6)(6')를 설치한다.Double steel pipe (3) consists of the outer steel pipe (1) and the inner steel pipe (2) built in the outer steel pipe (1) and the outer steel pipe (1) is provided with a strainer (5) of the same diameter at a predetermined interval, The lumen 2 is provided with strainers 6 and 6 'different in diameter at the same position as the strainer 5 of the outer lumen 1.

여기서 외강관(1)과 내강관(2)의 스트레나(5)(6)는 인접스트레나와 직교되는 방향으로 서로 어긋나게 설치하여 그라우트재가 사방으로 주입될 수 있게 한다.Here, the strainers 5 and 6 of the outer steel pipe 1 and the lumen 2 are installed to be displaced from each other in a direction perpendicular to the adjacent strainer so that the grout material can be injected in all directions.

외강관(1)과 내강관(2)의 선단부는 막혀있고 그 반대편에는 더블쉬이벨(4)을 설치하여 상기 외강관(1)과 내강관(2)에 각기 다른 재료가 주입되게 한다.The tip ends of the outer steel pipe 1 and the lumen pipe 2 are blocked and a double shibel 4 is installed on the opposite side so that different materials are injected into the outer steel pipe 1 and the lumen pipe 2.

내강관(2)의 스트레나(6)직경을 이완영역에 위치하는 것 보다 비이완영역에 위치하는 것이 크도록 하되 외강관(1)의 스트레나(5)직경 보다 크지 않게 한다.The diameter of the strainer 6 of the lumen 2 should be greater than that of the strainer 5 of the outer tube 1, rather than the diameter of the strainer 5 of the outer tube 1.

상기된 이중관(3)을 천공구멍에 삽입시킨 후에는 외강관(1)과 천공구멍 사이로 그라우트재가 역류되지 않도록 Ceromax CX-1 등의 급결, 고강도 특수시멘트로 코킹처리 한다.After inserting the above-described double pipe 3 into the drilled hole, it is caulked with a fastened, high-strength special cement such as Ceromax CX-1 to prevent the grout material from flowing back between the outer steel pipe 1 and the drilled hole.

더블쉬이벨(4)에는 주재료 압송용 펌프와 겔화반응제 압송용 펌프를 설치하는 한편 유량계와 압력계측기를 설치한다.The double shivel 4 is provided with a pump for pumping the main material and a pump for pumping the gelling reagent, and a flow meter and a pressure gauge.

펌프를 작동시켜 내강관(2)으로 A액을 압송시키는 한편 외강관(1)에는 B액을 압송시킨다.The pump is operated to press A liquid into the lumen 2, while B liquid is pressurized into the outer lumen 1.

여기서 주재료와 겔화반응제인 A액과 B액은 혼합되는 재료량에 따라 경화속도에 차이가 발생하는 특징이 있다.Here, A and B liquids, which are the main material and the gelling reagent, have a characteristic of causing a difference in curing rate depending on the amount of material to be mixed.

본 발명은 터널굴착 예정지반의 그라우팅시공에 있어서, 굴착에 의한 영향을 받은 이완영역과 비교적 안정한 비이완영역에 투입되는 재료의 겔화속도에 차이가 발생하므로써 이완영역에서는 이완공극 충진 및 폐쇄 효율을 높이고 비이완영역에서는 보강효과를 증대시킬 수 있는 것이다.In the grouting construction of a tunnel excavation ground, the present invention provides a difference in the gelation rate of materials introduced into the relaxation area affected by the excavation and the relatively stable non-relaxation area, thereby increasing the filling gap and closing efficiency in the relaxation area. In the non-relaxed region, the reinforcement effect can be increased.

특히 본 발명은 1회주입에 의해 전체 시공구간을 동시 주입시키게 된다.In particular, the present invention is to inject the entire construction section by a single injection.

Claims (4)

소정길이의 중공형상을 갖고 외주연에 일정간격으로 스트레나(5)가 형성되는 외강관(1)과, 상기 외강관(1)에 일정간격을 두고 삽입되며 외강관(1)과 동일위치에 스트레나(6)(6')가 형성되는 내강관(2)과, 상기 외강관(1)과 내강관(2)에 각기 다른 그라우트재를 주입하는 더블쉬이벨(4)로 구성되는 다중강관(3)을 구비시킨 것을 특징으로 하는 이중 강관 그라우팅 시공장치.An outer steel tube 1 having a hollow shape having a predetermined length and a strainer 5 formed at a predetermined interval on the outer circumference thereof, and inserted into the outer steel tube 1 at a predetermined interval, and the strainer at the same position as the outer steel tube 1. (6) A multi-steel pipe (3) consisting of a lumen pipe (2) in which (6 ') is formed, and a double sieve (4) for injecting different grout materials into the outer lumen (1) and lumen (2). Double steel pipe grouting construction device characterized in that it comprises a). 제 1 항에 있어서, 외강관(1)과 내강관(2)에 설치되는 스트레나(5)(6)(6')는 동일위치에 형성시키되 외강관(1)의 스트레나(5)는 동일직경으로 설치하고, 내강관(2)의 스트레나(6)(6')는 이완영역쪽의 직경이 비이완영역쪽 보다 적게한 것을 특징으로 하는 이중 강관 그라우팅 시공장치.2. The strainer (5) (6) (6 ') provided in the outer steel pipe (1) and the lumen pipe (2) is formed at the same position, but the strainers (5) of the outer steel pipe (1) have the same diameter. And a strainer (6) (6 ') of the lumen (2), the diameter of the relaxation area is less than the non-relaxation area side, double steel pipe grouting construction apparatus. 제 1 항에서, 외강관(1)과 내강관(2)에 설치된 스트레나(5)(6)(6')는 인접스트레나와 직교되는 방향으로 설치하여 사방으로 주입이 가능하게 한 것을 특징으로 하는 이중 강관 그라우팅 시공장치.The method of claim 1, wherein the strainer (5) (6) (6 ') provided in the outer steel tube (1) and the lumen (2) is installed in a direction orthogonal to the adjacent strainer, characterized in that the injection is possible in all directions Double steel pipe grouting device. 천공구멍에 내강관(2)이 내장된 외강관(1)을 삽입하는 과정과, 외강관(1)과 내강관(2)에 그라우트재 주입을 위한 더블쉬이벨(4)을 설치하는 과정과, 천공구멍과 외강관(1)사이에 그라우트재의 역류를 방지하기 위한 코킹과정과, 외강관(1)과 내강관(2)에 겔화반응제와 주재료를 압송시키는 과정과, 주재료의 분사속도 차이로 겔화반응제와의 혼합량에 차이가 발생하여 이완영역에는 급결성 경화제가 주입되고 비이완영역에는 완결제가 주입되는 과정과, 이중 강관 내부의 한계압 도달시 1차 주입을 종료하는 과정을 수행시키는 것을 특징으로 하는 이중 강관 그라우팅 시공방법.The process of inserting the outer steel pipe (1) with the inner lumen pipe (2) in the drilling hole, the process of installing a double shibel (4) for injection of grout material in the outer steel pipe (1) and the lumen pipe (2); Caulking to prevent backflow of grout material between the perforated hole and the outer steel tube (1), the process of forcing the gelling reagent and the main material into the outer steel tube (1) and the inner steel tube (2), and the injection speed of the main material As a result of the difference in the mixing amount with the gelling reaction agent, a fastening hardener is injected into the relaxation zone and a finalizer is injected into the non-relaxation zone, and a process of terminating the first injection when the limit pressure inside the double steel pipe is reached is performed. Double steel pipe grouting construction method, characterized in that.
KR1019990019042A 1999-05-26 1999-05-26 Duplication steel pipe grouting method in construction field KR100310873B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100817526B1 (en) * 2006-12-20 2008-03-27 백경재 Packer for grouting
CN112538911A (en) * 2019-09-23 2021-03-23 董建军 Organic cementing material concrete
CN116066152A (en) * 2023-04-04 2023-05-05 华北有色工程勘察院有限公司 Double-pipe grouting device for mine roadway

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100817526B1 (en) * 2006-12-20 2008-03-27 백경재 Packer for grouting
CN112538911A (en) * 2019-09-23 2021-03-23 董建军 Organic cementing material concrete
CN116066152A (en) * 2023-04-04 2023-05-05 华北有色工程勘察院有限公司 Double-pipe grouting device for mine roadway
CN116066152B (en) * 2023-04-04 2023-06-02 华北有色工程勘察院有限公司 Double-pipe grouting device for mine roadway

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