KR20020046904A - A method of construction for the breast wall - Google Patents

A method of construction for the breast wall Download PDF

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Publication number
KR20020046904A
KR20020046904A KR1020010047169A KR20010047169A KR20020046904A KR 20020046904 A KR20020046904 A KR 20020046904A KR 1020010047169 A KR1020010047169 A KR 1020010047169A KR 20010047169 A KR20010047169 A KR 20010047169A KR 20020046904 A KR20020046904 A KR 20020046904A
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South Korea
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hole
construction
wall
cement mortar
filled
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KR1020010047169A
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Korean (ko)
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KR100406693B1 (en
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김영길
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김영길
김태수
주식회사 일정건설
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Priority to KR10-2001-0047169A priority Critical patent/KR100406693B1/en
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    • 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
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0038—Production methods using an auger, i.e. continuous flight type

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)

Abstract

PURPOSE: A method of construction for soil protection of a water blocking wall is provided to control diameter and depth of the hole to be perforated freely and to make the construction in all the soil from the silt clay to a rock bed possible. CONSTITUTION: In the method for construction for soil protection of the water blocking wall, the first hole(2), the cement mortar(3), the stress material(4), gravels(5), a semicircle casing(6) and an uneven portion(6a) are included. The first hole(2) is perforated along the constructing line(L). The first hole(2) is filled with the cement mortar(3). The semicircle casing(6) with the uneven portion(6a) adjoins along the constructing line(L) in order to locate the uneven portion(6a) in the second hole(2). The second hole(2) is filled with stress material(4) and the gravels(5). The second hole(2) and the third hole(2) are perforated such as the first hole(1).

Description

차수벽 흙막이 공법{A method of construction for the breast wall}A method of construction for the breast wall}

본 발명은 차수벽(遮水壁) 흙막이 공법에 관한 것으로서, 더욱 상세히는 철재로 이루어진 반월형(半月形) 케이싱을 이용하여 차수벽 흙막이 공법을 적은 비용으로 단시간에 매우 효율적으로 수행할 수 있도록 한 반월형 케이싱을 이용한 차수벽 흙막이 공법을 제공코자 하는 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a barrier wall retaining method, and more particularly, to a semi-wall type casing which can perform the barrier wall retaining method very efficiently in a short time by using a semi-walled casing made of steel. In order to provide the used wall blocking method.

통상 지하 터파기 공사를 행할 시 주위에 옹벽 등을 축조하기 위하여 사용하고 있는 차수벽 흙막이 공법은 다음과 같은 다수의 공법들이 사용되어 오고 있다.In general, when the underground excavation work is carried out, a number of construction methods such as the water barrier wall blocking method used to construct retaining walls and the like have been used.

즉, 일반 H-비임과 토류판을 이용한 흙막이 공법, 현장타설 CIP 공법, MIP 공법, PIP 공법, SCW 주열식 공법 등 수많은 지하 터파기를 위한 차수 및 흙막이 공법을 현재까지 건설현장에서 사용하고 있으나, 이는 아래와 같은 장단점을 가지고 있었던 것이다.In other words, the order and soil screening methods for underground excavation such as soil clogging method using ordinary H-beam and earth plate, CIP method, MIP method, PIP method, SCW heating method, etc. It had the same advantages and disadvantages.

기존 CIP 공법의 경우는 기존 터파기 구조물과의 근접시공이 가능하고, 터파기 폭을 최소화 할 수 있으며, 토류판 시공이 불필요하므로 사고위험이 적다는 장점을 가지고 있지만, 이는 기둥간의 연결성이 좋지 못하며, 차수성이 나쁘고 토사유실의 가능성이 크다는 단점이 있었고, 구멍(孔)과 구멍 사이에 누수에 대한 별도의 보조방법이 필요하다는 문제점을 안고 있었던 것이다.In the case of the existing CIP method, it is possible to construct a close proximity to the existing trench structure, to minimize the width of the trench, and to minimize the risk of accidents since it is not necessary to install the earth plate, but it has poor connection between the pillars. There was a disadvantage of poor water quality and the possibility of soil loss, and there was a problem that a separate auxiliary method for leaks was required between the hole and the hole.

그리고 SCW 공법의 경우는 차수성이 좋으며, 토사유실의 가능성은 적다. 또한 벽체와 강도가 널말뚝보다 크고, 함수비가 높은 연약지반에 시공이 가능하고, 시공 후 잔토가 소량이고 수질 오염의 우려가 적다는 장점은 가지고 있으나,In the case of the SCW method, the degree of ordering is good and there is little possibility of soil loss. In addition, it has the advantage that the wall and the strength is larger than the board pile, and it can be installed on the soft ground with high water content, and after construction, there is a small amount of residual soil and there is little concern about water pollution.

토사지역에서만 시공이 가능하고, 자갈지반이나 전석층, 풍화암 이상인 지층에서는 시공이 불가능하며, 대형장비가 필요하므로 작업공간이 넓어야 하며, 비교적 공사비가 비싸다는 단점과 함께 타 공법에 비하여 내구성이 떨어지는 등의 문제점을 안고 있었던 것이다.It is only possible to construct in earth and sand area, and it is impossible to construct in the ground which is gravel ground, stone floor, weathered rock or more, and because the large equipment is required, the work space should be large, and the construction cost is relatively expensive, and its durability is inferior to other construction methods. I was having a problem.

이상에서 설명한 바와 같이 지하 터파기 공사를 행할 시에 주위에 옹벽을 축조하기 위한 기존의 다양한 공법들이 실시되고 있으나, 기존 공법들은 차수 및 주변 침하없이 공사를 행하기 위해서는 상당한 비용지출을 감수할 수 밖에 없어 이를 동시에 대체할 수 있는 공법의 개발은 업계의 절실한 당면과제였던 것이다.As described above, various existing methods for constructing retaining walls around the underground excavation work are being implemented. However, the existing methods have to pay considerable expense to perform the construction without the order and surrounding settlement. Therefore, the development of a method to replace it at the same time was an urgent challenge for the industry.

이에 본 발명은 기존의 CIP 공법이 가진 장점을 최대한 반영하면서 구멍과 구멍 사이의 연결이 잘 되지 않아 차수가 되지 않는 단점을 반월형 케이싱을 이용한 차수벽 흙막이 공법을 개발하여 기존 공법들이 가진 제반 문제점을 일소할 수 있는 차수벽 흙막이 공법을 제공코자 하는 것이며,Therefore, the present invention, while reflecting the advantages of the existing CIP method to the maximum, the connection between the hole and the hole is not well ordered to develop the order wall blocking method using a half-wall casing to eliminate all the problems with the existing methods To provide a water barrier construction that can be

천공하는 구멍의 구경(口徑) 및 심도(深度)는 자유롭게 조절이 가능하고, 실트질 점토에서 단단한 암반층까지 전 범위의 토질에서 시공이 가능한 차수벽 흙막이 공법을 제공함을 또한 발명의 목적으로 하며,It is also an object of the present invention to provide a water barrier wall construction that can be freely controlled in apertures and depths of perforated holes, and that can be constructed in the entire range of soil from silty clay to hard rock layers.

더불어 수직도 및 수평도가 탁월하고 시공비가 저렴한 차수벽 흙막이 공법을 제공함에 발명의 기술적 과제를 두고 본 발명을 완성한 것이다.In addition, the present invention has been completed in view of the technical problem of the invention in order to provide an excellent wall and wall construction method with excellent vertical and horizontal degrees and low construction cost.

도 1은 종래 차수벽 흙막이 공법을 수행할 시에 구멍을 파서 옹벽을 조성하는 과정을 순차적으로 보인 단면도1 is a cross-sectional view sequentially showing a process of forming a retaining wall by digging a hole when performing a conventional water barrier construction method

도 2는 종래 차수벽 흙막이 공법을 수행할 시에 구멍을 파서 옹벽을 조성하는 과정을 순차적으로 보인 평면도2 is a plan view sequentially showing a process of forming a retaining wall by digging a hole when performing a conventional water barrier construction method

도 3은 본 발명에서 제공하는 차수벽 흙막이 공법을 수행할 시에 구멍을 파서 옹벽을 조성하는 과정을 순차적으로 보인 단면도Figure 3 is a cross-sectional view sequentially showing a process of forming a retaining wall by digging a hole when performing the order wall retaining method provided by the present invention

도 4는 본 발명에서 제공하는 차수벽 흙막이 공법을 수행할 시에 구멍을 파서 옹벽을 조성하는 과정을 순차적으로 보인 평면도4 is a plan view sequentially showing a process of forming a retaining wall by digging a hole when performing the order wall retaining method provided by the present invention;

도 5는 본 발명에서 제공하는 차수벽 흙막이 공법을 수행할 시에 사용되는 반월형 케이싱을 보인 사시도Figure 5 is a perspective view showing a half-wall casing used when performing the order wall retaining method provided by the present invention

■ 도면의 주요부분에 사용된 부호의 설명 ■■ Explanation of symbols used in main part of drawing ■

1:오거머신2:구멍1: Auger Machine 2: Hole

3:시멘트 모르타르4:응력재3: cement mortar 4: stress material

5:자갈6:반월형 케이싱5: Pebble 6: Half moon casing

6a:요입부6a: recessed part

우선 본 발명을 설명하기에 앞서 도 1, 2와 함께 종래의 CIP 공법을 살펴 보기로 한다.First, prior to describing the present invention, a conventional CIP method will be described with reference to FIGS. 1 and 2.

종래 CIP 공법을 이용하여 지하 터파기 공사를 위한 옹벽을 축조코자 할 시는 우선 해당 위치인 시공라인(L)에 오거머신(1)을 이용하여 구멍(2)을 적정 깊이로 천공한 후 오거머신(1)을 인발하면서 시멘트 모르타르(3)를 구멍(2) 속에 충진한다.When constructing a retaining wall for underground excavation work using the conventional CIP method, first drill the hole (2) to the appropriate depth using the auger machine (1) in the construction line (L) at the corresponding position, and then use the auger machine. The cement mortar (3) is filled into the hole (2) while drawing (1).

그리고 시멘트 모르타르(3)가 충진된 구멍(2) 속에는 철근 또는 H-비임 등과 같은 응력재(4)를 타삽하고, 자갈(5)을 충진하여 하나의 구멍(2) 속에 옹벽의 일부를 시공하게 되는 것이다.In the hole 2 filled with cement mortar 3, a stress material 4 such as rebar or H-beam is inserted, and gravel 5 is filled to install a part of the retaining wall in one hole 2. Will be.

이러한 구멍(2)을 연속적으로 시멘트 모르타르(3) 및 응력재(4), 자갈(5)을 이용하여 충진시켜 옹벽 조성을 위해서는 시멘트 모르타르(3)의 경화시간이 필요하기 때문에 도 2와 같이 좌우로 소정 간격을 두고 구멍(2)을 천공한 후 이의 중간에 또 하나의 구멍(2)을 천공하여 시멘트 모르타르(3) 및 응력재(4), 자갈(5)을 타삽하고, 이들 구멍(2)과 구멍(2) 상간을 메울 수 있는 또 하나의 구멍(2)을 상기 구멍(2) 내에 충진된 시멘트 모르타르(3)가 경화된 후에 오거머신(1)으로 천공하여 옹벽을 축조하는 공법을 취하고 있다.Since the hole 2 is continuously filled with cement mortar 3, stress material 4, and gravel 5, the hardening time of the cement mortar 3 is required to form the retaining wall. After drilling the holes 2 at a predetermined interval, another hole 2 is drilled in the middle thereof to inject cement mortar 3, stressor 4, and gravel 5, and these holes 2 After the cement mortar (3) filled in the hole (2) is hardened by another hole (2) which can fill the upper phase of the hole (2) and the auger machine (1) to take the construction method of building the retaining wall have.

이에 반하여 본 발명에서는 상기한 종래의 CIP 공법이 갖는 작업의 연속성 저하 및 구멍(2) 간의 연결부위 누수현상 등을 보다 확실하게 차단할 수 있으며, 시공성의 극대화, 염가 시공이 가능한 차수벽 흙막이 공법을 제공코자 한다.On the contrary, in the present invention, it is possible to more reliably block the continuity reduction of the work and leakage of the connection part between the holes 2 and the like with the conventional CIP method. do.

즉, 본 발명은 지하 터파기 공사를 위한 옹벽을 조성하기 위한 구멍(2)을 연속적으로 오거머신(1)을 이용하여 천공하고 및 시멘트 모르타르(3) 충진, 반월형 케이싱(6) 타삽, 응력재(4) 타삽, 자갈(5)을 충진하고 연속하여 이웃하는 구멍(2)을 천공하여 전기와 동일한 작업공정을 거친 후 연속되는 또 하나의 구멍(2)을 천공한 후 첫 번째 천공한 구멍(2) 상에 타삽된 반월형 케이싱(6)을 인발하는 공정을 연속적으로 행하여 옹벽을 기 측량된 시공라인(L)을 따라 조성해 나가는 공법이다.That is, according to the present invention, the hole 2 for forming the retaining wall for the underground trench construction is continuously drilled using the auger machine 1, and the cement mortar 3 is filled, the semi-walled casing 6 is scooped, the stress material (4) Fill the rudder, gravel (5) and drill adjacent holes (2) in succession, go through the same working process as before, and then drill another hole (2) and then drill the first drilled hole ( 2) It is a method of forming the retaining wall along the construction line L which was previously measured by continuously performing the process of drawing the half-wall type casing 6 inserted into it.

본 발명은 첫 번째 구멍(2)을 뚫은 후 2번째 구멍(2)을 천공할 때는 첫 번째 구멍(2) 상에 타삽한 반월형 케이싱(6)은 결합시켜 두었다가 2번째 구멍(2)에서 1,2번째 충진한 시멘트 모르타르(3)가 2번째 구멍(2)에 타삽한 반월형 케이싱(6)에 의해 3번째 천공한 구멍(3)상에 이동되지 않도록 차단한 상태에서 1번째 구멍(2)에 결합된 반월형 케이싱(6)을 인출하는 방법으로 연속시공을 하게 된다.According to the present invention, when the second hole 2 is drilled after the first hole 2 is drilled, the half-walled casing 6 inserted into the first hole 2 is combined and then 1, The second filled cement mortar (3) is blocked by the semi-walled casing (6) inserted into the second hole (2) so as not to move on the third drilled hole (3) in the first hole (2) Continuous construction is to take out the combined semi-monthly casing (6).

즉, 연속하여 옹벽 조성을 위한 구멍(2)을 천공하여 나가되, 이웃하여 천공되는 구멍(2)상에 각각 타삽된 반월형 케이싱(6)은 2개 이상의 구멍(2)을 천공한 후에 앞서 천공한 구멍(2)상에 타삽된 반월형 케이싱(6)을 인출하는 방법으로 미처 경화되지 않은 시멘트 모르타르(3)가 이웃하여 천공된 구멍(2) 상으로 이동하지 않도록 차단하면서 연속시공을 행할 수 있도록 한 것이다.That is, the holes 2 for continuously forming the retaining wall are continuously drilled, and the half-walled casings 6 respectively inserted into the holes 2 to be drilled in the neighboring holes are drilled previously after drilling two or more holes 2. (2) by drawing out the half-walled casing (6) inserted in the (2) to allow continuous construction to be carried out while blocking the hardened cement mortar (3) from moving adjacent to the perforated hole (2) .

이러한 본 발명의 차수벽 흙막이 공법을 수행함에 있어서, 천공되는 구멍(2)의 직경은 주로 400~600mm까지 장비에 따라 다양한 구경으로 작업이 가능하고 반월형 케이싱(6)의 겹침 정도(=폭)에 따라 구멍(2)상에 시공되는 기둥의 강도는 자유롭게 조절할 수 있는 것이다.In performing the order wall retaining method of the present invention, the diameter of the hole (2) to be drilled is possible to work with various apertures depending on the equipment mainly up to 400 ~ 600mm, depending on the degree of overlap (= width) of the half-wall type casing (6) The strength of the column constructed on the hole 2 can be freely adjusted.

상기 본 발명을 수행함에 있어서 중요한 구성부재 중 하나인 반월형 케이싱(6)은 도 5에서 보는 바와 같이 그 횡단면이 반월형(半月形)으로 이루어지고, 그 반경은 천공되는 구멍(2)의 반경과 동일한 정도의 반경으로 구성된다.Half moon-type casing 6, which is one of the important constituent members in carrying out the present invention, has a cross-section of a half moon shape as shown in FIG. 5, the radius of which is equal to the radius of the hole 2 to be drilled. It consists of a radius of degree.

그리고 이웃하여 천공되는 구멍(2)과 먼저 천공한 구멍(2)에 충진되는 시멘트 모르타르(3)가 끓어짐 없이 견고하게 이어지게 하기 위하여 이웃하는 구멍(2)과의 겹침 부분을 보상해 줄 수 있는 구멍(2)과 동일한 반경을 갖는 요입부(6a)가 형성되어 있다.And in order to make the cement mortar (3) filled in the hole (2) to be drilled adjacently and the hole (2) first drilled firmly without boiling, it can compensate for the overlapping portion with the neighboring hole (2) The recessed part 6a which has the same radius as the hole 2 is formed.

상기한 공법에 의해 연속적으로 구멍(2)을 천공하고 시멘트 모르타르(3) 충진 및 반월형 케이싱(6) 타삽, 응력재(4) 타삽, 자갈(5) 충진을 행하여 나가면 지하 터파기 공사에 필요한 옹벽을 매우 신속하고 염가로 시공할 수 있게 되는 것이다.By the above method, the hole 2 is continuously drilled and the cement mortar 3 is filled and the semi-walled casing 6 is inserted, the stress material 4 is inserted, and the gravel 5 is filled. It is possible to construct very quickly and cheaply.

본 발명의 시공방법을 요약하여 정리하면 다음과 같다.The construction method of the present invention is summarized as follows.

① 오거머신(1)으로 소정 깊이까지 구멍(2)을 천공한다.① Drill the hole 2 to the predetermined depth with the auger machine 1.

② 구멍(2) 천공 후 오거머신(1)을 인상(=인발)하면서 구멍(2)에 시멘트 모르타르(3)를 롯드를 통해 하부로부터 상부로 주입한다.② After drilling the hole (2), the cement mortar (3) is injected into the hole (2) from the bottom to the top through the rod while pulling up the auger machine (= drawing).

③ 오거머신(1) 인상 후 기 제작된 반월형 케이싱(6)을 이웃하여 천공되는 구멍(2) 방향으로 요입부(6a)가 위치되도록 타삽하여 설치한다.③ After lifting the auger machine (1), install the already manufactured half-wall type casing (6) so that the concavity (6a) is positioned in the direction of the hole (2) to be drilled adjacent to it.

④ 시멘트 모르타르(3)가 충진된 구멍(2)에 철근 또는 H-비임 등과 같은 응력재(4)를 삽입한다.④ Insert stress material (4) such as reinforcing steel bar or H-beam into the hole (2) filled with cement mortar (3).

⑤ 응력재(4) 삽입 후 자갈(5)을 충진한다.⑤ Fill the gravel (5) after the stress material (4) is inserted.

⑥ 이웃하여 2번째 구멍(2)을 오거머신(1)으로 천공하되, 상기 2번째 구멍(2)은 반월형 케이싱(6)에 형성된 요입부(6a)와 구멍(2)의 일부가 연속되게 천공작업을 한다.(6) Drill the second hole (2) to the auger machine (1) next to each other, and the second hole (2) drills the concave part (6a) formed in the half-wall type casing (6) and a part of the hole (2) continuously. Do the work.

⑦ 상기 2번째 구멍(2)에 상기 2항부터 5항까지의 작업을 수행한다.⑦ Carry out the above 2 to 5 operations on the second hole (2).

⑧ 이웃하여 3번째 구멍(2)을 오거머신(1)으로 천공하되, 상기 3번째 구멍(2) 역시 반월형 케이싱(6)에 형성된 요입부(6a)와 구멍(2)의 일부가 연속되게 천공작업을 한다.⑧ Neighbor the third hole (2) with the auger machine (1), but the third hole (2) also drills the concave part (6a) formed in the half-wall casing (6) and a part of the hole (2) in succession Do the work.

⑨ 상기 3번째 구멍(2)에 상기 2항부터 5항까지의 작업을 수행한다.(9) Carry out steps 2 to 5 in the third hole (2).

⑩ 첫 번째 구멍(2)에 삽입된 반월형 케이싱(6)을 인발한다.(2) Pull out the meniscus casing (6) inserted into the first hole (2).

이와 같은 공법을 연속적으로 행하면서 측량된 시공라인(L)을 따라 구멍(2)을 천공하면서 반복작업을 수행한다.While performing this method continuously, the repetitive operation is performed while drilling the hole 2 along the surveyed construction line (L).

이상에서 상세히 살펴 본 바와 같은 본 발명에서 제공하는 반월형 케이싱(6)을 이용한 차수벽 흙막이 공법은 다음과 같은 특유의 효과를 제공하게 된다.As described above in detail, the order wall retaining method using the half-wall type casing 6 provided in the present invention provides the following unique effects.

즉, 본 발명은;That is, the present invention;

① 기존 터파기 구조물과의 근접시공이 가능하며,① Close construction with existing trench structures is possible.

② 터파기 폭을 최소화할 수 있고,② can minimize the width of the trench,

③ 토류판 시공이 불필요하므로 사고위험이 적고,③ There is little risk of accident because it is not necessary to install earth plate.

④ 구멍과 구멍 사이에 누수에 따른 보조공법이 필요 없으며,④ There is no need for the auxiliary method according to the leak between the hole and the hole.

⑤ 모든 지반에 굴착이 가능하며,⑤ Excavation is possible on all grounds,

⑥ 연속시공이 가능하고 따라서 차수가 완벽하고 강도가 높다.⑥ Continuous construction is possible, therefore, the degree is perfect and the strength is high.

⑦ 또한 수직 굴착도가 높으며,⑦ also has a high degree of vertical digging,

⑧ 주변 침하방지를 최소화할 수 있고,⑧ It can minimize the surrounding settlement

⑨ 확실한 차수 및 흙막이 병행 공법으로서는 시공비가 저렴하며,⑨ The construction cost is low as a reliable order and earth barrier

⑩ 기존 오거머신으로 시공이 가능하므로 별도의 대형장비가 불필요하며,대형 It is possible to construct with existing auger machine, so no large equipment is needed.

⑪ 연속적인 작업으로 양생기간이 필요없는 등,양 no continuous curing period

다수의 각별한 효과를 제공하는 매우 획기적인 발명이다.It is a very innovative invention that provides a number of exceptional effects.

Claims (1)

지하 터파기 공사를 위하여 옹벽을 축조하는 차수벽 흙막이 공법에 있어서;What is claimed is: 1. An order wall retaining method for constructing a retaining wall for underground excavation; 기 측량된 시공라인(L)을 따라 1번 구멍(2)을 오거머신(1)을 사용하여 천공한 후 오거머신(1) 인발과 동시에 시멘트 모르타르(3)를 1번 구멍(2) 내부에 충진하고,A hole 1 is drilled along the previously constructed construction line L using the auger machine 1, and at the same time as the auger machine 1 is drawn out, the cement mortar 3 is inserted into the hole 1 at the same time. Filling, 상기 1번 구멍(2) 내부에 요입부(6a)를 가진 반월형 케이싱(6)을 시공라인(L)을 따라 이웃하여 연속 천공하는 2번 구멍(2)에 요입부(6a)가 위치되도록 타삽하며,Insert the concave inlet 6a to be located in the second conduit 2 which continuously perforates the half-wall type casing 6 having the concave inlet 6a in the first hole 2 along the construction line L. , 순차적으로 응력재(4)와 자갈(5)을 2번 구멍(2) 내부에 충진된 시멘트 모르타르(3)상으로 타삽하며,Sequentially inserting the stress material (4) and gravel (5) onto the cement mortar (3) filled in the second hole (2), 상기 2번 구멍(2)을 오거머신(1)으로 1번 구멍(2)과 동일하게 요입부(6a)에 겹쳐서 천공 후 시멘트 모르타르(3) 충진과 반월형 케이싱(6)을 전기한 1번 구멍(2)과 동일하게 수행하며,Hole 1, which was filled with cement mortar (3) and semi-walled casing (6), was drilled by overlapping the hole (2) with the auger machine (1) on the indentation (6a) in the same way as the hole (2). Perform the same as (2), 3번 구멍(2)을 오거머신(1)으로 상기 1,2번 구멍(2)과 동일하게 요입부(6a)에 겹쳐서 천공한 후 1번 구멍(2)상에 결합된 반월형 케이싱(6)을 인발하는 제 과정을 연속적으로 시공라인(L)을 따라 행하여 옹벽을 축조할 수 있도록 한 것을 특징으로 하는 차수벽 흙막이 공법.Semi-walled casing 6 coupled to hole 1 after punching hole 3 with an auger machine 1 in the same way as hole 1 and 2, overlapping recess 6a. A water barrier wall construction method characterized in that the construction of the retaining wall can be constructed by continuously performing the drawing process along the construction line (L).
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