KR20040046591A - Method for costructing anchors under the ground using high pressure grouting - Google Patents

Method for costructing anchors under the ground using high pressure grouting Download PDF

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Publication number
KR20040046591A
KR20040046591A KR1020020074554A KR20020074554A KR20040046591A KR 20040046591 A KR20040046591 A KR 20040046591A KR 1020020074554 A KR1020020074554 A KR 1020020074554A KR 20020074554 A KR20020074554 A KR 20020074554A KR 20040046591 A KR20040046591 A KR 20040046591A
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South Korea
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casing
ground
rod
anchoring
grouting
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KR1020020074554A
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Korean (ko)
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KR100498536B1 (en
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윤재철
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주식회사 제일종합통상
윤재철
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Priority to KR10-2002-0074554A priority Critical patent/KR100498536B1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/808—Ground anchors anchored by using exclusively a bonding material
    • 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
    • E02D3/123—Consolidating by placing solidifying or pore-filling substances in the soil and compacting the soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/30—Miscellaneous comprising anchoring details

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

PURPOSE: An anchoring method under the ground using high-pressure grouting is provided to have enough anchoring strength in the low depth of the soft ground and to decrease the term and cost of construction by perforating and grouting simultaneously. CONSTITUTION: The anchoring method under the ground using high-pressure grouting comprises the steps of: installing a large-diameter casing(810) and a small-diameter rod(820) to two rotary devices formed on a support of a perforator(800) respectively to make the rod(820) inserted in the casing(810); locating a perforator(800) at the front of a retaining wall(900) and adjusting the support of the perforator(800) to make the casing structure formed at the appointed downward angle; rotating the casing(810) and the rod(820) inserted in the casing(810) respectively, then advancing, perforating a hole in the ground of the retaining wall(900) and injecting grouting materials in the ground around the perforated hole at high pressure through the rod(820); injecting grouting materials and perforating using high pressure to the planned depth, drawing off the rod(820) and inserting an anchoring cable into the casing(810); and drawing off the casing(810) and curing the grouting materials, adding tension to the anchoring cable and cutting off and anchoring the rear end of the cable.

Description

고압 그라우팅을 이용한 지중에의 앵커 시공방법{Method for costructing anchors under the ground using high pressure grouting}Method for costructing anchors under the ground using high pressure grouting}

본 발명은 고압 그라우팅을 이용한 지중에의 앵커 시공방법에 관한 것으로서, 특히 토류벽의 지반내에 케이블(와이어) 앵커링을 위한 천공작업을 수행함에 있어서, 종래와는 달리 천공을 하면서 동시에 고압으로 천공홀 주변의 지반 내에 그라우팅재를 주입하는 작업을 병행함으로써 연약 지반 내의 저심도에서도 충분한 앵커력을 발휘할 수 있는 고압 그라우팅을 이용한 지중에의 앵커 시공방법에 관한 것이다.The present invention relates to a method for constructing anchors in the ground using high pressure grouting, and in particular, in performing the drilling work for anchoring cables (wires) in the ground of the earth wall, unlike the prior art, at the same time at the same time high The present invention relates to a method for constructing anchors in the ground using high pressure grouting capable of exerting sufficient anchoring force even at low depths in soft ground by simultaneously injecting grouting materials into the ground.

일반적으로, 지중 앵커 구조물은 토목 흙막이 공사에 있어서는 지반을 안정화시키기 위해 설치되는 토목 시설물이다. 이러한 지중 앵커 구조물은 지반에 앵커홀을 천공하고, 흙막이 구조물에 일단이 고정된 지중 앵커 케이블을 앵커홀에 삽입하여 그 타단을 앵커홀 내에 고정한 상태에서 앵커 케이블에 프리스트레스력을 부여하여 가시설 및 영구적으로 발생하는 응력, 변형, 변위 등에 대하여 구조물과 지반을 안정화시키게 된다.In general, the underground anchor structure is a civil installation that is installed to stabilize the ground in the civil earthquake construction. The underground anchor structure drills the anchor hole in the ground, and inserts the underground anchor cable having one end fixed to the earth structure to the anchor hole and gives the prestressing force to the anchor cable while fixing the other end in the anchor hole. Stabilize the structure and the ground against stress, deformation, and displacement.

이상과 같은 앵커 구조물의 시공방법에 있어서, 종래에는 도 1에 도시된 바와 같이, 먼저 천공장비(100)를 토류벽(110)의 천공 예정 지점에 위치시킨 후, 드릴봉(101) 및 드릴홀 외장부(sheathing)(102)로 구성된 드릴부를 설정된 일정 하향각도로 조절한다. 그런 후, 도 2에서와 같이, 토류벽(110)의 지반을 천공하면서 드릴봉(101) 및 드릴홀 외장부(102)를 천공홀 내부에 삽입한다. 이때, 드릴봉(101) 및 드릴홀 외장부(102)는 천공이 진전됨에 따라 구간별로 천공홀 내부로 삽입된다.In the construction method of the anchor structure as described above, conventionally, as shown in FIG. 1, first, the drilling equipment 100 is located at a point to be drilled on the earth wall 110, and then the drill rod 101 and the drill hole exterior. The drill part consisting of a portion 102 is adjusted at a predetermined downward angle. Then, as shown in Figure 2, while drilling the ground of the earth wall 110, the drill rod 101 and the drill hole exterior portion 102 is inserted into the drilling hole. At this time, the drill rod 101 and the drill hole exterior portion 102 is inserted into the drilling hole for each section as the drilling progresses.

이렇게 하여 소정 깊이까지 드릴봉(101) 및 드릴홀 외장부(102)가 지반에 삽입되면, 도 3에 도시된 바와 같이, 그 삽입된 상태에서 드릴봉(101)만을 인발하고, 드릴홀 외장부(102) 내부로 유입된 토사 및 기타 이물질을 제거한다. 그런 후, 도 4에서와 같이, 드릴홀 외장부(102) 내부에 그라우팅재 주입용 호스(미도시)를 드릴홀 외장부(102) 말단까지 삽입하여 1차 그라우팅을 실시한 후 바로 이어서 앵커용 케이블(또는 와이어)(120)을 드릴홀 외장부(102) 내부에 삽입한다.When the drill rod 101 and the drill hole sheath 102 are inserted into the ground in this manner, as shown in FIG. 3, only the drill rod 101 is drawn out in the inserted state, and the drill hole sheath portion is inserted. (102) Remove the soil and other foreign substances that have entered. Thereafter, as shown in FIG. 4, a grouting material injection hose (not shown) is inserted into the drill hole sheath 102 to the end of the drill hole sheath 102 to perform the first grouting, followed immediately by the anchor cable. (Or wire) 120 is inserted into the drill hole sheath 102.

그런 다음, 도 5에 도시된 바와 같이, 드릴홀 외장부(102)를 인발하고, 천공장비(100)를 단계적으로 철거한다. 그리고, 도 6에서와 같이, 앵커용 케이블(120)이 삽입되어 있는 천공홀 내부에 다수회에 걸쳐 그라우팅재를 주입한다. 이에 의해 지반내 케이블(120)의 말단부 주변에는 도시된 것처럼 씰링 벌브(sealing bulb) (130)가 형성된다.Then, as shown in FIG. 5, the drill hole sheath 102 is drawn out, and the drilling equipment 100 is removed in stages. And, as shown in Figure 6, the grouting material is injected a plurality of times in the hole inside the anchor cable 120 is inserted. As a result, a sealing bulb 130 is formed around the distal end of the ground cable 120.

이렇게 하여 그라우팅재를 마지막으로 주입한 뒤 6일 내지 10일이 지난 후, 도 7에서와 같이, 앵커용 케이블(120)에 텐션을 가한후 앵커링을 마무리한다.After 6 days to 10 days after the last injection of the grouting material in this way, as shown in Figure 7, the tension is applied to the anchor cable 120, and then finish anchoring.

그런데, 이상과 같은 종래 지중 앵커 시공방식은 충분한 앵커력을 얻기 위해 일단 비교적 상당한 깊이까지 천공을 해야 하는데, 건물이 밀집되어 있는 도심 지역 같은 곳에서는 그와 같이 상당한 깊이까지 천공작업을 수행함에 따라 인접 건물에 좋지 않은 영향을 미치는 등 여러 가지 제약을 받게 되는 문제가 있다. 또한, 천공에서부터 앵커링 완료시점까지 여러 단계를 거치게 되어 있어 공정이 번거롭고, 공사기간이 길어 작업 효율이 떨어지고 비용면에서 비경제적인 단점이 있다.However, the conventional underground anchor construction method as described above should be drilled to a relatively considerable depth in order to obtain sufficient anchoring force. There are a number of problems that can be affected, such as adversely affecting buildings. In addition, there are several steps from the drilling to the completion of the anchoring process is cumbersome, the construction period is long, the work efficiency is low, and there is a cost-effective disadvantage.

본 발명은 이상과 같은 사항을 감안하여 창출된 것으로서, 토류벽의 지반내에 케이블(와이어) 앵커링을 위한 천공작업을 수행함에 있어서, 천공을 하면서 동시에 고압으로 천공홀 주변의 지반 내에 그라우팅재를 주입하는 작업을 병행함으로써, 연약 지반 내의 저심도에서도 충분한 앵커력을 발휘할 수 있고, 천공과 그라우팅을 동시에 수행함으로써 공기의 단축 및 공사 비용을 절감할 수 있는 고압 그라우팅을 이용한 지중에의 앵커 시공방법을 제공함에 그 목적이 있다.The present invention has been made in view of the above matters, and in performing the drilling work for anchoring the cable (wire) in the ground of the earth wall, the work of injecting grouting material into the ground around the drilling hole at the same time while drilling. In addition, by providing the anchoring method in the ground using high pressure grouting, which can exhibit sufficient anchoring force even at low depth in the soft ground, and reduce the air and construction cost by performing drilling and grouting at the same time. There is a purpose.

도 1 내지 도 7은 천공장비를 이용한 종래의 지중에의 앵커 시공방법에 따른 앵커 시공과정을 순차적으로 보여주는 도면.1 to 7 are views sequentially showing the anchor construction process according to the conventional anchor construction method using the drilling equipment.

도 8은 본 발명에 따른 고압 그라우팅을 이용한 지중에의 앵커 시공방법의 구현을 위해 채용되는 천공장비에 케이싱 및 로드가 설치된 상태를 보여주는 도면.Figure 8 is a view showing a state in which the casing and the rod is installed in the drilling equipment employed for the implementation of the anchor construction method in the ground using high pressure grouting in accordance with the present invention.

도 9는 도 8에서의 케이싱 및 로드 주변부에 대한 부분 발췌도.9 is a partial excerpt of the casing and rod periphery of FIG. 8;

도 10 내지 도 14는 본 발명에 따른 고압 그라우팅을 이용한 지중에의 앵커 시공방법에 따른 앵커 시공과정을 순차적으로 보여주는 도면.10 to 14 are views sequentially showing the anchor construction process according to the anchor construction method in the ground using high pressure grouting according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

100...천공장비 101...드릴봉100 Drilling equipment 101 Drill rods

102...드릴홀 외장부 110...토류벽102 Drill hole exterior 110 Earth wall

120...앵커용 케이블(와이어) 130...씰링 벌브120 ... Anchor Cable (Wire) 130 ... Sealing Bulb

800...천공장비 801...지지대800 ... drilling equipment 801 ... support

802...제1 로터리 장치 803...제2 로터리 장치802 ... First rotary device 803 ... Second rotary device

804...후러싱 슈벨 805...로드 고정용 클램프804 ... Flushing shovel 805 ... Clamp for fixing the rod

806...고압 그라우팅 슈벨 807...호스806 High pressure grouting shovel 807 hose

810...케이싱 820...로드810 Casing 820 Rod

900...토류벽 910...고압 펌프900 ... earth wall 910 ... high pressure pump

920...그라우팅재 저장고 930...그라우팅재920 ... grouting pantry 930 ... grouting pan

940...앵커용 케이블(와이어)940 ... Anchor Cable (Wire)

상기의 목적을 달성하기 위하여 본 발명에 따른 고압 그라우팅을 이용한 지중에의 앵커 시공방법은, 천공장비를 이용하여 토류벽의 지반 내에 앵커용 케이블을 시공하는 방법에 있어서,In order to achieve the above object, the anchor construction method in the ground using the high pressure grouting according to the present invention, in the method of constructing the anchor cable in the ground of the earth wall using the drilling equipment,

(a) 대구경의 케이싱과 소구경의 로드를 준비하여, 상기 천공장비의 지지대 상단의 일측에 마련되어 있는 케이싱과 로드를 각각 회전시키기 위한 두 개의 로터리 장치에 케이싱과 로드를 각각 설치하되, 케이싱에 로드가 관입되도록 설치하는 단계;(a) preparing a large-diameter casing and a small-diameter rod, and installing the casing and the rod in two rotary devices for rotating the casing and the rod, respectively, provided on one side of the upper end of the support of the drilling machine, and loading the casing Installing to intrude;

(b) 상기 천공장비를 토류벽의 천공홀 형성 예정 지점 앞에 위치시키고, 상기 케이싱 구조체가 미리 설정된 일정 하향 각도를 취하도록 천공장비의 지지대를 조정하는 단계;(b) positioning the boring equipment in front of a predetermined point for forming the boring hole of the earth wall, and adjusting the support of the boring equipment so that the casing structure takes a predetermined downward angle;

(c) 상기 케이싱 구조체를 구동하여 케이싱 및 케이싱 내에 관입된 로드를 각각 회전시키면서 함께 전진시켜 토류벽의 지반 내에 구멍을 천공하면서 동시에 로드를 통해 고압으로 그라우팅재를 천공홀 주변부의 지반내에 주입하는 단계;(c) driving the casing structure and advancing the casing and the rods inserted into the casing, respectively, to perforate the holes in the ground of the earth wall and simultaneously inject the grouting material into the ground around the perforation holes at high pressure through the rods;

(d) 상기와 같은 고압을 이용한 그라우팅재의 주입을 병행한 천공작업을 계획 심도까지 실시한 후, 로드를 인발함과 동시에 앵커용 케이블(와이어)을 케이싱 내부에 삽입하여 앵커용 케이블의 선단부를 천공홀의 첨단부에 충전되어 있는 그라우팅재에 침잠시키는 단계; 및(d) After carrying out the drilling work in parallel with the injection of the grouting material using the above high pressure to the planned depth, drawing the rod and inserting the anchor cable (wire) into the casing and inserting the end of the anchor cable into the casing. Submerging in the grouting material filled in the tip; And

(e) 상기 케이싱을 인발하고 그라우팅재의 양생을 위해 소정 기간 지난 후, 앵커용 케이블에 텐션을 가한 후 케이블의 후단을 절단 및 정착시킴으로써 앵커링을 완료하는 단계를 포함하는 점에 그 특징이 있다.(e) after the predetermined period for drawing the casing and curing the grouting material, and applying tension to the cable for anchoring, cutting and fixing the rear end of the cable to complete anchoring.

이하 첨부된 도면을 참조하면서 본 발명의 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 따른 고압 그라우팅을 이용한 지중에의 앵커 시공방법은, 천공장비를 이용하여 토류벽의 지반 내에 앵커용 케이블을 시공하는 방법에 있어서, 먼저 도 8 및 도 9에 도시된 바와 같이, 대구경의 케이싱(810)과 소구경의 로드(820)를 준비하여, 상기 천공장비(800)의 지지대(801) 상단의 일측에 마련되어 있는, 상기케이싱(810)과 로드(820)를 각각 회전시키기 위한 제1, 제2 로터리 장치(802)(803)에 케이싱(810)과 로드(820)를 각각 설치하되, 케이싱(810)에 로드(820)가 관입되도록 설치한다. 여기서, 상기 제1 로터리 장치(802)는 로드(820)가 관입된 케이싱 (810)을 고정 및 지지하는 장치로서, 케이싱(810)과 로드(820)가 모두 회전이 가능하도록 2중(double) 로터리 구조로 구성된다. 또한, 상기 제2 로터리 장치(803)는 로드(820)를 회전가능하게 고정 및 지지하는 장치로서 단일(single) 로터리 구조로 구성된다. 도 9에서 참조번호 804는 천공에 따른 케이싱(810) 내의 토사를 외부로 배출하는 후러싱 슈벨(flushing swivel), 805는 로드(820)를 고정시켜주는 클램프, 806은 고압 그라우팅 슈벨, 807은 그라우팅재의 이송을 위한 호스를 각각 나타낸다.Anchor construction method in the ground using the high-pressure grouting according to the present invention, in the method of constructing the anchor cable in the ground of the earth wall using the drilling equipment, as shown in Figures 8 and 9, a large diameter casing 810 and the small-diameter rod 820 is prepared, and provided on one side of the upper end of the support 801 of the drilling equipment 800, the first for rotating the casing 810 and the rod 820, respectively The casing 810 and the rod 820 are respectively installed in the second rotary devices 802 and 803, and the rod 820 is installed in the casing 810. The first rotary device 802 is a device for fixing and supporting the casing 810 into which the rod 820 is inserted, so that both the casing 810 and the rod 820 can be rotated. It consists of a rotary structure. In addition, the second rotary device 803 is a device for rotatably fixing and supporting the rod 820 is configured in a single rotary structure. In Figure 9, reference numeral 804 is a flushing swivel (flushing swivel) for discharging the soil in the casing 810 to the outside according to the drilling, 805 is a clamp for fixing the rod 820, 806 is a high-pressure grouting shoebell, 807 grouting Represents a hose for the transfer of ashes respectively.

이상과 같이 케이싱(810)에 로드(820)가 관입된 상태로 케이싱 구조체를 천공장비의 지지대(801)에 설치한 후, 도 10에 도시된 바와 같이, 상기 천공장비 (800)를 토류벽(900)의 천공홀 형성 예정 지점 앞에 위치시키고, 상기 케이싱 구조체가 미리 설정된 일정 하향 각도를 취하도록 천공장비의 지지대(801)의 기울임 각도를 조정한다. 그리고, 도 11에 도시된 바와 같이, 상기 케이싱 구조체를 구동하여 케이싱(810) 및 케이싱(810) 내부에 관입된 로드(820)를 각각 회전시키면서 케이싱(810)과 로드(820)를 함께 전진시켜 토류벽(900)의 지반 내에 구멍을 천공하면서 동시에 로드(820)를 통해 고압으로 그라우팅재(930)를 천공홀 주변부의 지반내에 주입한다. 즉, 상기 제1,제2 로터리 장치(802)(803)의 구동에 의해 각 로터리 장치(802)(803)에 장착되어 있는 케이싱(810) 및 로드(820)는 회전하면서 전진하게 되는데, 이때 외부의 케이싱(810)과 내부의 로드(820)는 서로 반대 방향으로 회전하면서 전진하게 된다. 그리고, 이렇게 회전하면서 전진하는 로드(820)의 내부로는 고압 펌프(910)로부터의 펌핑 작용에 의해 그라우팅재 저장고(920)로부터 호스(807) 및 고압 그라우팅 슈벨(swivel)(806)을 거쳐 이송되어온 그라우팅재가 공급되어, 로드(820)의 천공선단부에서 그라우팅재를 고압으로 토출함으로써 그라우팅재가 천공홀 주변부의 지반내에 주입되는 것이다.After the casing structure is installed on the support 801 of the drilling rig in a state where the rod 820 is inserted into the casing 810 as described above, as shown in FIG. 10, the drilling rig 800 is connected to the earth wall 900. Position in front of a predetermined hole formation point, and adjusts the inclination angle of the support 801 of the drilling equipment so that the casing structure takes a predetermined downward angle. As shown in FIG. 11, the casing 810 and the rod 820 are advanced by rotating the casing 810 and the rod 820 inserted into the casing 810 by driving the casing structure. The grouting material 930 is injected into the ground around the perforation hole at high pressure through the rod 820 while drilling a hole in the ground of the earth wall 900. That is, the casing 810 and the rod 820 mounted on each rotary device 802 and 803 are moved forward by the driving of the first and second rotary devices 802 and 803. The outer casing 810 and the inner rod 820 are advanced while rotating in the opposite direction. In addition, the rotating rod 820 moves forward from the grouting material reservoir 920 via the hose 807 and the high pressure grouting swivel 806 by a pumping action from the high pressure pump 910. The grouting material has been supplied, and the grouting material is injected into the ground of the periphery of the perforation hole by discharging the grouting material at a high pressure from the perforated tip of the rod 820.

상기와 같은 고압을 이용한 그라우팅재의 주입을 병행한 천공작업을 계획 심도까지 실시한 후, 도 12 및 도 13에 도시된 바와 같이, 로드(820)를 인발함과 동시에 앵커용 케이블(와이어)(940)을 케이싱(810) 내부에 삽입하여 앵커용 케이블(940)의 선단부를 천공홀의 첨단부에 충전되어 있는 그라우팅재(930)에 침잠시킨다.After carrying out the drilling operation in parallel with the injection of the grouting material using the high pressure to the planned depth, as shown in Figure 12 and 13, while pulling the rod 820 and at the same time anchor cable (wire) 940 Is inserted into the casing 810 so as to submerge the tip of the anchor cable 940 in the grouting material 930 is filled in the tip of the drilling hole.

그런 후, 도 14에 도시된 바와 같이, 상기 케이싱(810)을 인발하고 그라우팅재의 양생을 위해 소정 기간 지난 후, 앵커용 케이블(940)에 텐션을 가한 후 케이블(940)의 후단을 절단 및 토류벽(900)에 정착시킴으로써 앵커링을 완료한다.Then, as shown in FIG. 14, after drawing out the casing 810 and passing a predetermined period for curing of the grouting material, tension is applied to the cable 940 for the anchor and the rear end of the cable 940 is cut and the earth wall. The anchoring is completed by fixing to 900.

이상의 설명에서와 같이, 본 발명은 토류벽의 지반내에 케이블(와이어) 앵커링을 위한 천공작업을 수행함에 있어서, 종래와는 달리 천공을 하면서 동시에 고압으로 천공홀 주변의 지반 내에 그라우팅재를 주입하는 작업을 병행하므로, 연약 지반 내의 저심도에서도 충분한 앵커력을 발휘할 수 있고, 또한 그와 같이 천공과 그라우팅이 동시에 이루어지므로 공기의 단축 및 공사 비용을 절감할 수 있는 장점이 있다.As described above, the present invention in performing the drilling for cable (wire) anchoring in the ground of the earth wall, unlike the prior art while injecting the grouting material into the ground around the drilling hole at high pressure while drilling In parallel, sufficient anchoring force can be exhibited even at low depths in the soft ground, and since the drilling and grouting are performed at the same time, there is an advantage of shortening the air and reducing the construction cost.

Claims (1)

천공장비를 이용하여 토류벽의 지반 내에 앵커용 케이블을 시공하는 방법에 있어서,In the method of constructing the anchor cable in the ground of the earth wall using the drilling equipment, (a) 대구경의 케이싱과 소구경의 로드를 준비하여, 상기 천공장비의 지지부재 상단의 일측에 마련되어 있는, 케이싱과 로드를 각각 회전시키기 위한 두 개의 로터리 장치에 케이싱과 로드를 각각 설치하되, 케이싱에 로드가 관입되도록 설치하는 단계;(a) preparing a large-diameter casing and a small-diameter rod, and installing the casing and the rod in two rotary devices for rotating the casing and the rod, respectively, provided on one side of the upper end of the supporting member of the drilling equipment, the casing Installing a rod to be intrusive; (b) 상기 천공장비를 토류벽의 천공홀 형성 예정 지점 앞에 위치시키고, 상기 케이싱 구조체가 미리 설정된 일정 하향 각도를 취하도록 천공장비의 지지부재를 조정하는 단계;(b) positioning the drilling equipment in front of a predetermined point for forming the drilling hole of the earth wall and adjusting the support member of the drilling equipment so that the casing structure takes a predetermined downward angle; (c) 상기 케이싱 구조체를 구동하여 케이싱 및 케이싱 내에 관입된 로드를 각각 회전시키면서 함께 전진시켜 토류벽의 지반 내에 구멍을 천공하면서 동시에 로드를 통해 고압으로 그라우팅재를 천공홀 주변부의 지반내에 주입하는 단계;(c) driving the casing structure and advancing the casing and the rods inserted into the casing, respectively, to perforate the holes in the ground of the earth wall and simultaneously inject the grouting material into the ground around the perforation holes at high pressure through the rods; (d) 상기와 같은 고압을 이용한 그라우팅재의 주입을 병행한 천공작업을 계획 심도까지 실시한 후, 로드를 인발함과 동시에 앵커용 케이블(와이어)을 케이싱 내부에 삽입하여 앵커용 케이블의 선단부를 천공홀의 첨단부에 충전되어 있는 그라우팅재에 침잠시키는 단계; 및(d) After carrying out the drilling work in parallel with the injection of the grouting material using the above high pressure to the planned depth, drawing the rod and inserting the anchor cable (wire) into the casing and inserting the end of the anchor cable into the casing. Submerging in the grouting material filled in the tip; And (e) 상기 케이싱을 인발하고 그라우팅재의 양생을 위해 소정 기간 지난 후, 앵커용 케이블에 텐션을 가한 후 케이블의 후단을 절단 및 정착시킴으로써 앵커링을 완료하는 단계를 포함하는 것을 특징으로 하는 고압 그라우팅을 이용한 지중에의 앵커 시공방법.(e) drawing the casing and after a predetermined period for curing the grouting material, applying tension to the cable for anchoring and cutting and fixing the rear end of the cable to complete anchoring. Anchor construction method in the ground.
KR10-2002-0074554A 2002-11-28 2002-11-28 Method for costructing anchors under the ground using high pressure grouting KR100498536B1 (en)

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CN103215952A (en) * 2013-04-11 2013-07-24 河南博特工程防护有限公司 High polymer anchoring grouting method
CN103422501A (en) * 2013-03-13 2013-12-04 中国建筑第四工程局有限公司 Anti-floating anchor structure in sand layer geology and construction method thereof
CN105257327A (en) * 2015-11-19 2016-01-20 中国矿业大学(北京) Prestressed flexible grouted anchor rod and construction method thereof
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CN106049492A (en) * 2016-06-01 2016-10-26 贵州师范大学 Anchor rod construction method for civil engineering
CN111501583A (en) * 2020-05-12 2020-08-07 汪方勇 Method for reinforcing arch bridge by using oblique anchor rod, first drilling tool and second drilling tool
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CN103215952A (en) * 2013-04-11 2013-07-24 河南博特工程防护有限公司 High polymer anchoring grouting method
CN105257327A (en) * 2015-11-19 2016-01-20 中国矿业大学(北京) Prestressed flexible grouted anchor rod and construction method thereof
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CN106049492A (en) * 2016-06-01 2016-10-26 贵州师范大学 Anchor rod construction method for civil engineering
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CN111501583B (en) * 2020-05-12 2021-11-02 汪方勇 Method for reinforcing arch bridge by using oblique anchor rod, first drilling tool and second drilling tool
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