KR20110011225A - Large section messer tunnel construction method appling pre-construct method of infrastructure - Google Patents

Large section messer tunnel construction method appling pre-construct method of infrastructure Download PDF

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KR20110011225A
KR20110011225A KR1020090068775A KR20090068775A KR20110011225A KR 20110011225 A KR20110011225 A KR 20110011225A KR 1020090068775 A KR1020090068775 A KR 1020090068775A KR 20090068775 A KR20090068775 A KR 20090068775A KR 20110011225 A KR20110011225 A KR 20110011225A
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mesa
excavation
tunnel
section
excavated
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Korean (ko)
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염명호
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염명호
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    • 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
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
    • E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
    • 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
    • E21D9/02—Driving inclined tunnels or galleries
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/16—Machines for digging other holes in the soil
    • E02F5/18—Machines for digging other holes in the soil for horizontal holes or inclined holes

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

PURPOSE: A large messer-tunnel construction method using a way of pre-placing a structure is provided to enhance economics and construction performance in construction of a large tunnel, to ensure stability and to shorten construction period. CONSTITUTION: A large messer-tunnel construction method using a way of pre-placing a structure is as follows. A messer(100) is penetrated to tunnel. Facilities, including a support(200), a L-shaped steel(300) and a lining, are installed on both sides of an excavated section. The L-shaped steel is coupled to a support rib. The lining is installed on the top and the side. The top and both sides of the excavated section are excavated using a messer shield technique. An unexcavated section is excavated using excavating equipment.

Description

구조물 선타설 방식을 적용한 대단면 메사터널 구축방법{LARGE SECTION MESSER TUNNEL CONSTRUCTION METHOD APPLING PRE-CONSTRUCT METHOD OF INFRASTRUCTURE}LARGE SECTION MESSER TUNNEL CONSTRUCTION METHOD APPLING PRE-CONSTRUCT METHOD OF INFRASTRUCTURE}

본 발명은 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법에 관한 것으로, 더욱 상세하게는 굴착구간의 상부 및 양 측부를 상기 메사실드 공법에 의해 선굴착한 후, 남은 미굴착부를 대형장비를 이용하여 신속히 굴착할 수 있는 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법에 관한 것이다.The present invention relates to a large-section mesa tunnel construction method applying the structure pre-positioning method, and more specifically, after pre-excavating the upper and both sides of the excavation section by the mesa shield method, the remaining unexcavated portion using a large equipment The present invention relates to a large section mesa tunnel construction method using a structure placement method that can be quickly excavated.

일반적으로, 메사실드(Messer Shield) 공법에 의해 터널을 구축하는 방법은, 메사(Meser, 鋼失板)를 추진시켜 굴진 작업을 한 뒤 일정간격으로 철강지보공을 세우고, 상기 인접한 지보공 상부로 터널의 형상에 따라 메사가 진행됨에 따라 일정간격으로 설치한 지보공과 지보공 사이에 토류판을 끼워 굴착면에 따라 받쳐가는 공법으로써, 이 공법은 막장 굴착과 토류판 설치 및 지보공 설치 등의 작업이 메사라는 복공철갑 내에서 연속적으로 안전하게 이루어진다는 점에서 실드 공법과 산악 터널 공법의 조합공법이라 할 수 있는 바, 이러한 메사실드 공법은 대형굴착공사나 하수로관 등을 매설하는 공사 등 각종 굴착공사를 무소음, 무진동으로 시공할 수 있고, 높은 안전성과 정확한 굴진, 신속한 작업진행, 굴착면과의 공간을 없애줌으로써 굴착면 침하의 극소화, 다양한 굴착공사에 응용가능, 작업장비의 단순화, 공사방법 용이 및 경제적인 시공 가능 등 그 효과가 매우 좋은 것으로 평가된다.In general, a method of constructing a tunnel by the Messer Shield method is to protrude a mesa (meser) and excavate, and then establish a steel support at regular intervals, As the mesa progresses according to the shape, the earth plate is sandwiched between the ground hole and the ground hole at regular intervals, and it is supported by the excavation surface. It is a combination method of shield method and mountain tunnel method in that it is continuously and safely.In this mesa shield method, various excavation works such as large-scale excavation work and laying of sewer pipes can be constructed without noise and vibration-free. High safety and accurate excavation, rapid working progress, eliminating space from the digging surface Tuesday, applicable to a variety of excavation, the simplification of work equipment is estimated that the effect is very good, such as how to facilitate construction and economic construction possible.

그러나, 이러한 방식은 지보공과 토류판 등 막대한 지보재가 라이닝 콘트리트 속으로 매몰됨으로 인해 지보재의 낭비를 가져오고, 다량의 지보재를 운반하거나 설치하는데 따른 공사비의 부담이 컸으며, 시공과정이 복잡하여 공사가 어렵고 공기(工期)가 지연되는 등의 문제점이 있었다.However, this method is a waste of the support material due to the burial of the support material and earthen plate into the lining concrete, and the burden of the construction cost to carry or install a large amount of support material, and the construction process is complicated and difficult construction There was a problem such as delay in air.

이를 위하여 국내특허등록공고 1990-0007883호에 소개된 바와 같이 즉, 도 1에 도시된 바와 같이, 토사층에다 메사를 막장 내로 압입 전진시키면서 지하터널을 구축함에 있어서, 메사(1)를 전진시키면서 다수 개의 지보공(2a, 2b, 2c, …)을 차례로 설치하고, 이들 지보공(2a)과 지보공(2b) 사이에 결합홈(3)과 결합돌기와 같은 연결부위를 갖춘 콘크리트 세그먼트(5)를 연속적으로 끼워 결속하여 벽체를 형성시킨 다음, 막장(6)을 굴착해 나감에 따라 발진기지측 즉, 상기 메사(1)의 뒷쪽에 설치된 지보공(2a, 2b, 2c, …, 2f)을 차례로 해체하고, 이들 해체된 지보공(2a, 2b, 2c, …, 2f)을 메사(1)의 앞쪽에 새로이 굴착된 막장(6)에 차례로 설치하여 새로운 지보공(2a', 2b', 2c', …, 2f')으로 재사용하면서 이들 사이에 콘크리트 세그먼트(5)를 끼워 굴착작업을 계속해 나가는 한편, 상기와 같이 지보공(2a, 2b, 2c, …, 2f)이 해체되고 콘크리트 세그먼트(5)만이 연속조립되어 일련의 벽체 로 남게된 콘크리트 세그먼트(5)에 단 한 번의 라이닝콘크리트를 시공함으로써 굴착공사를 마무리한다.To this end, as introduced in Korean Patent Registration Publication No. 1990-0007883, namely, as shown in FIG. 1, in constructing an underground tunnel while pushing the mesa into the membrane into the sediment layer, the mesa 1 is advanced while moving forward. Supporters 2a, 2b, 2c, ... are installed in sequence, and the concrete segments 5 having coupling parts such as engaging grooves 3 and engaging projections are continuously connected between the supports 2a and the supports 2b. After the wall 6 is formed to excavate the wall 6, as the oscillation base side, i.e., the support holes 2a, 2b, 2c, ..., 2f provided on the rear side of the mesa 1, are dismantled in sequence, Supporting posts 2a, 2b, 2c, ..., 2f are installed in the newly excavated bar 6 in front of the mesa 1 and reused as new supporting posts 2a ', 2b', 2c ', ..., 2f'. While continuing the excavation work by sandwiching the concrete segment (5) between them, As shown in Fig. 2, the support beams 2a, 2b, 2c, ..., 2f are dismantled, and only one concrete segment 5 is continuously assembled to finish the excavation work by installing only one lining concrete on the concrete segment 5, which remains as a series of walls. do.

그러나, 이러한 방식 역시 메사실드 공법의 특성상 막장(6) 부분의 지반이 약하거나 모래재질인 경우, 막장의 토사가 흘러내려 작업자가 작업이 어렵고 토사를 파내는 작업과 메사(1)를 전진시키는 작업을 동시에 수행할 수 없는 문제점이 있었다.However, this method is also because of the nature of the mesa shield method, when the ground of the membrane 6 part is weak or sand material, the sediment of the membrane is flowed down, which makes it difficult for the worker to dig the soil and advances the mesa (1). There was a problem that can not be performed at the same time.

또한, 종래의 메사실드 공법은 주로 전력구, 통신구, 하수 박스 등과 같은 비교적 작은 단면의 구조물을 지중에 축조하기 위해 개착(開鑿) 시공이 불가능한 경우에 주로 적용되어 왔다.In addition, the conventional mesa shield method has been mainly applied to the case where it is impossible to install the construction to build a relatively small cross-sectional structure such as electric power, communication, sewage box in the ground.

그러나, 최근 도시개발에 따른 지하도 및 지하 광장, 지하철 정거장 등 대규모 굴착이 불가피하게 됐으며, 기존의 메사실드 공법을 그대로 이용하기에는 경제성이나 시공성 등 작업 전반에 걸쳐 문제점이 지적되었다.However, in recent years, large-scale excavation such as underpass, underground plaza, subway station is inevitable due to urban development, and it is pointed out the problems in overall work such as economic feasibility and constructability to use the existing mesa shield method.

본 발명은 종래 기술의 문제점을 해결하기 위해 이루어진 것으로써, 본 발명의 주된 목적은 대단면 터널의 구축시 경제성과 시공성을 향상시킨 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법을 제공하는데 그 목적이 있다.The present invention has been made to solve the problems of the prior art, the main object of the present invention is to provide a large cross-section mesa tunnel construction method applying a structure pre-positioning method that improved the economics and workability when constructing a large cross-section tunnel There is this.

본 발명의 또 다른 목적은 종래의 침하 문제로부터 야기된 안전성을 확보하고, 공기(工期)를 앞당길 수 있는 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법을 제공하는데 그 목적이 있다.Still another object of the present invention is to provide a method for constructing a large cross section mesa tunnel by applying a structure pre-positioning method that can secure the safety caused by the conventional settlement problem and accelerate the air.

상기와 같은 목적을 달성하기 위하여, 본 발명인 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법은, 메사를 관입시켜 터널을 굴착한 후, 굴착구간의 양 측면에 일정 간격으로 설치되는 지보재, 상기 지보재 간에 결합되는 L형강, 상부 및 측부에 설치되는 복공재와 같은 시설물을 설치하여 터널을 굴착하는 대단면 메사터널 구축방법에 있어서, 상기 메사실드 공법을 이용하여 굴착구간의 상부 및 양 측부를 굴착한 후 굴착장비를 이용하여 미굴착(未掘鑿)부를 굴착함으로써 달성된다.In order to achieve the above object, the large-section mesa tunnel construction method applying the present invention structure pre-pouring method, after inserting the mesa to excavate the tunnel, the support is installed at both sides of the excavation section at regular intervals, the support In the large-section mesa tunnel construction method for excavating a tunnel by installing facilities such as L-shaped steel coupled to each other, a porous material installed on the upper and side portions, excavating the upper and both sides of the excavation section using the mesa shield method It is achieved by excavating the unexcavated part by using the excavation equipment.

이때, 상부 및 양 측부의 굴착시, 상부를 선 굴착한 후 양 측부의 상부에서 하부의 순서로 후 굴착하는 것을 특징으로 한다.At this time, when the excavation of the upper portion and both sides, after digging the upper line is characterized in that the excavation in the order of the lower portion from the upper portion of the upper portion.

또한, 상부 및 양 측부의 굴착 후, 굴착면에 소정 두께로 콘크리트를 타설하 고 양생시킨 후, 상기 콘크리트의 외부로 돌출된 상기 시설물을 제거하는 것을 특징으로 한다.In addition, after the excavation of the upper and both sides, after the concrete is poured and cured to a predetermined thickness on the excavation surface, characterized in that to remove the facility protruding to the outside of the concrete.

이상에서 상술한 본 발명에 따르면, 메사실드 공법을 이용한 상부에서 하부로의 굴착진행순서로 인하여 빈번히 발생하였던 침하 문제 등을 방지함은 물론, 이로 인한 대형사고의 발생을 예방하였으며, 개착 구간에서의 굴착작업이 완료되기 이전에 적정선에서 하부 굴착이 이루어짐으로써 공사착수의 대기기간이 없어져 공사기간이 단축되고, 종래 개착 구간마다 설치되던 복공재 등을 상부 굴착시 단 1회만 설치하여 작업함으로써 공사비용을 절감시킬 수 있으며, 작업효율성을 향상시킬 수 있다.According to the present invention as described above, to prevent the settlement problems that frequently occurred due to the excavation procedure from the top to the bottom using the mesa shield method, as well as to prevent the occurrence of large accidents caused by, As the lower excavation is performed on the appropriate line before the excavation work is completed, the waiting period for construction commencement is eliminated, and the construction period is shortened. It can reduce and improve work efficiency.

또한, 대단면 터널의 굴착시 상부 및 양 측부만을 상기 메사실드 공법에 의해 굴착하고, 미굴착부는 대형 장비를 이용하여 굴착함으로써, 신속한 굴착이 가능하여 경제성을 크게 향상시킬 수 있다.In addition, when the excavation of the large-section tunnel, only the upper and both sides are excavated by the mesa shield method, and the unexcavated portion is excavated by using large equipment, so that rapid excavation is possible and the economic efficiency can be greatly improved.

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

도 1은 일반적인 메사실드 공법을 보인 단면도이고, 도 2 내지 도 4는 본 발명에 따른 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법의 일실시예에 의한 작업방법을 나타낸 도면이며, 도 5는 본 발명에 따른 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법의 일실시예에 굴착 방법을 나타낸 도면이고, 도 6은 본 발명에 따른 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법의 일실시예에 의한 상부에서 하부의 순서로 굴착하는 방법을 보인 도면이다.1 is a cross-sectional view showing a general mesa shield method, Figures 2 to 4 is a view showing a working method according to an embodiment of a large section mesa tunnel construction method applied to the structure placing method according to the present invention, Figure 5 6 is a view showing an excavation method in one embodiment of a large cross section mesa tunnel construction method applying the structure pre-positioning method according to the present invention, Figure 6 is one embodiment of a large cross-section mesa tunnel construction method applying the structure pre-positioning method Figure showing a method of excavation in the order of the top to the bottom by an example.

본 발명을 설명하기에 앞서, 메사(100)는 원지반에 압입되는 절토용 판넬이며, 복공재(400)는 상기 메사(100)의 후단부에 설치되는 것으로 토류판, 각파이프, RC판넬 등을 사용할 수 있고, 지보재(200)는 H형강으로 토압을 받도록 설계된 규격에 따라 제작 및 설치하게 되며, L형강(300)은 상기 지보재(200) 간에 결합되어 상기 지보재(200)를 견고히 결속시킨다.Prior to explaining the present invention, the mesa 100 is a panel for cutting to be pressed into the base, the porous material 400 is to be installed on the rear end of the mesa 100, such as earth plate, square pipe, RC panel, etc. The support member 200 may be manufactured and installed according to a standard designed to receive earth pressure as the H-shaped steel, and the L-shaped steel 300 may be coupled between the support members 200 to firmly bind the support members 200.

한편, 선행되는 상단 굴착부는 상단 굴착용 가시설과 보강용 가시설로 구성되는데 즉, 도 5에 도시된 바와 같이, 상단 굴착용 가시설은 굴착 단면의 규격에 맞도록 제작되어 굴착중 외력(외부에서 가해지는 토압)에 견디도록 설계된 지보재(支保材 : H형강)와 강결체(鋼結體)가 되도록 하는 부수자재(L형강과 볼트 및 너트)와 지보재(200)의 외부에 설치되어 원지반에 압입되는 메사(100), 그리고 상기 메사(100)의 후방에 굴착 진행과 함께 설치되는 복공재(覆工材 : 토립자의 유실을 막기 위한 토류판, 각파이프, RC판넬 등)로 구성된다.On the other hand, the preceding upper excavation portion is composed of the upper excavation facility and the reinforcement temporary facility, that is, as shown in Figure 5, the upper excavation temporary facility is manufactured to meet the specifications of the excavation cross-section external force during excavation (exposed from the outside Supporting materials (L-shaped steel and bolts and nuts) designed to withstand earth pressure) and rigid bodies, and mesas installed outside of the supporting material 200 and press-fitted to the ground. (100), and a perforated material which is installed at the rear of the mesa 100 with the excavation process (진행 工 覆: earth plate, angular pipe, RC panel, etc. to prevent the loss of the granules).

상기 메사(100)와 상기 복공재(400)는 선행굴착부의 상부 및 측면에 설치되며, 굴착용 가시설의 내부에 설치되는 지지부재(500)는 하부굴착 시 선행 굴착부의 상부굴착용 가시설이 처지거나 변위가 발생하지 않도록 보강하여 하부굴착 시 버텨 줄 수 있는 시설물을 말한다.(H-형강 및 각종 강재를 굴착방향으로 즉, 종방향 보강)The mesa 100 and the porous material 400 is installed on the upper side and the side of the preliminary excavation portion, the support member 500 installed in the excavation provisional equipment is the upper excavation of the preliminary excavation portion when the bottom excavation or sagging It refers to a facility that can be reinforced to reinforce the displacement so that it can be endured in the bottom excavation.

먼저, 도 2 내지 도 5에 도시된 바와 같이, 본 발명인 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법에 의하면 메사(100)를 관입시켜 터널을 굴착한 후, 굴착구간의 양 측면에 일정 간격으로 설치되는 지보재(200), 상기 지보재(200) 간에 결합되는 L형강(300), 상부 및 측부에 설치되는 복공재(400)와 같은 시설물을 설치하여 터널을 굴착하는 메사실드(Messer Shield) 공법을 이용한 대단면 터널 굴착 방법에 있어서, 상기 메사실드 공법을 이용하여 굴착구간의 상부 및 양 측부를 굴착한 후 굴착장비를 이용하여 미굴착(未掘鑿)부를 굴착하게 된다.First, as shown in Figures 2 to 5, according to the method for constructing a large section mesa tunnel using the present invention structure pre-positioning method, after injecting the mesa 100 to excavate the tunnel, a predetermined interval on both sides of the excavation section Mesa shield (Messer Shield) method to excavate the tunnel by installing facilities such as the support member 200 is installed, the L-shaped steel 300 is coupled between the support member 200, the porous material 400 is installed on the top and side In the large-section tunnel excavation method using the method, after excavating the upper and both sides of the excavation section by using the mesa shield method, the unexcavated part is excavated using the excavation equipment.

이때, 상부 및 양 측부의 굴착시, 상부를 선 굴착한 후 양 측부의 상부에서 하부의 순서로 후 굴착한다.At this time, during the excavation of the upper portion and both sides, the upper portion is excavated and then excavated in the order of the lower portion from the upper portion of both sides.

즉, 도 6에 도시된 바와 같이, 상기 메사실드 공법에 의하여 적어도 두 개의 상,하부 구간으로 나누어진 굴착구간 중 상기 굴착구간의 상부에서 하부의 순서로 굴착을 하며, 상기 상부 굴착 후, 상부에 설치된 다수 개의 상기 지보재(200) 하단부에 상기 다수 개의 지보재(200)와 상호 고정결합되는 지지부재(500)를 결합하고, 상기 메사실드 공법에 의해 상기 굴착구간의 하부를 굴착하게 된다.That is, as shown in Figure 6, the excavation section divided into at least two upper and lower sections by the mesa shield method is excavated in the order of the upper to the lower excavation section, after the upper excavation, The support member 500 is fixedly coupled to the plurality of support material 200 to the lower end of the plurality of support material 200 is installed, and the lower portion of the excavation section is excavated by the mesa shield method.

이때, 상기 굴착구간 중 최초 상부의 굴착시에만 상기 복공재(400)를 설치하며, 상기 지지부재(500)는 다수 개의 상기 지보재(200)와 결합되되, 연이어 형성되도록 설치한다.At this time, only when the excavation of the first upper portion of the excavation section is installed the porous material 400, the support member 500 is coupled to a plurality of the support member 200, it is installed so as to be formed in succession.

즉, 상기 지지부재(500)는 상부를 소정 깊이 굴착한 후에 하부를 동시에 굴착할 시에 상부에 설치된 상기 지보재(200), 상기 L형강(300), 상기 복공재(400) 등이 하부로 낙하되는 것을 방지하기 위하여 설치하는 것이다.That is, the support member 500 excavates the upper portion at a predetermined depth and at the same time excavates the lower portion, the support member 200, the L-shaped steel 300, and the porous material 400, which are installed on the upper portion, fall downward. To prevent it from happening.

따라서, 상기 지지부재(500)는 하나의 H형강 등으로 제작하여 결합시키거나, 다수 개의 H형강 등으로 결합시킨 뒤, 용접 등으로 각각 견고하게 연결함으로써 상부의 설치물들이 하부 굴착시 상기 지지부재(500)에 지지되어 낙하되지 않도록 상기 지지부재(500)를 설치하는 것이 바람직하며, 상기 지지부재(500)는 굴착 구간 중 최하단부에는 설치하지 않는다.Therefore, the support member 500 is made of a single H-shaped steel, etc., or coupled to a plurality of H-shaped steel, etc., and then firmly connected to each other by welding, etc., the upper installations when the lower excavation of the support member ( It is preferable to install the support member 500 so that the support member 500 does not fall, and the support member 500 is not installed at the lowest end of the excavation section.

또한, 도 4에 도시된 바와 같이, 상부 및 양 측부의 굴착 후, 굴착면에 소정 두께로 콘크리트를 타설하고 양생시킨 후, 상기 콘크리트의 외부로 돌출된 상기 시설물을 제거하는데, 이때, 도 4에서 작업 순서 2와 3은 어느 하나를 먼저 시행해도 무방하나, 콘크리트를 타설하여 양생시킨 후 상기 시설물을 제거하는 것이 바람직하다.In addition, as shown in Figure 4, after the excavation of the upper and both sides, after pouring concrete and curing in a predetermined thickness on the excavation surface, and removes the facility protruding to the outside of the concrete, in this case, in Figure 4 Work order 2 and 3 may be performed first, but it is preferable to remove the facility after curing by pouring concrete.

상기 시설물을 제거한 후에는 미굴착부(Core)를 굴착하게 되는데, 이때, 메사실드 공법이 아닌 대형굴착장비를 이용하여 상기 미굴착부를 굴착함으로써, 작업 효율성을 높일 수 있고, 공사 시간을 단축할 수 있으며, 경제성을 향상시키게 된다.After removing the facility to excavate the unexcavated portion (Core), in this case, by excavating the unexcavated portion using a large excavation equipment rather than the mesa shield method, it is possible to increase the work efficiency, shorten the construction time And economics.

이는 소형 굴착 위주로 진행되었던 메사실드 공법의 단점을 보완하여 대단면 터널 공사에 적용하는 굴착 방법으로써, 대단면의 경우 상부와 양 측부를 메사실드 공법에 의해 굴착한 후, 미굴착부는 대형굴착장비를 이용하여 빠르고 손쉽게 굴착 할 수 있어 공기(工期)지연 문제를 해결한 것이다.This is an excavation method that applies the shortcomings of the mesa shield method, which has been mainly focused on the small excavation, and applies to the large-area tunnel construction. It can solve the air delay problem because it can be excavated quickly and easily.

이상에서 본 발명을 바람직한 실시예에 대하여 도시하고 설명하였으나, 본 발명은 상기한 실시예에 한정하지 아니하며, 특허청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형이 가능할 것이다.While the present invention has been illustrated and described with respect to preferred embodiments, the invention is not limited to the above-described embodiments, and is commonly used in the field of the invention without departing from the spirit of the invention as claimed in the claims. Anyone with a variety of variations will be possible.

도 1은 일반적인 메사실드 공법을 보인 단면도,1 is a cross-sectional view showing a general mesa shield method,

도 2 내지 도 4는 본 발명에 따른 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법의 일실시예에 의한 작업방법을 나타낸 도면,2 to 4 is a view showing a working method according to an embodiment of a large section mesa tunnel construction method applying the structure placing method according to the present invention,

도 5는 본 발명에 따른 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법의 일실시예에 굴착 방법을 나타낸 도면,5 is a view showing an excavation method in an embodiment of a large section mesa tunnel construction method applying the structure casting method according to the present invention,

도 6은 본 발명에 따른 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법의 일실시예에 의한 상부에서 하부의 순서로 굴착하는 방법을 보인 도면.Figure 6 is a view showing a method of excavation in the order of the top to the bottom according to an embodiment of a large section mesa tunnel construction method applying the structure casting method according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

100 : 메사 200 : 지보재100: Mesa 200: Jibojae

300 : L형강 400 : 복공재300: L-shaped steel 400: Composite material

500 : 지지부재 600 : 토류판500: support member 600: earth plate

700 : 지지대700: support

Claims (4)

메사를 관입시켜 터널을 굴착한 후, 굴착구간의 양 측면에 일정 간격으로 설치되는 지보재, 상기 지보재 간에 결합되는 L형강, 상부 및 측부에 설치되는 복공재와 같은 시설물을 설치하여 터널을 굴착하는 대단면 메사터널 구축방법에 있어서,After drilling the tunnel by injecting mesa, it is great to excavate the tunnel by installing facilities such as support materials installed at both sides of the excavation section at regular intervals, L-shaped steel coupled between the support materials, and perforated materials installed on the upper and side portions. In the method of building cotton mesa tunnel, 상기 메사실드 공법을 이용하여 굴착구간의 상부 및 양 측부를 굴착한 후 굴착장비를 이용하여 미굴착(未掘鑿)부를 굴착하는 것을 특징으로 하는 메사실드 공법을 이용한 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법.Large section using the mesa shield method using the mesa shield method, after excavating the upper and both sides of the excavation section using the mesa shield method, and excavating the unexcavated part using excavation equipment. How to build a mesa tunnel. 제1항에 있어서, 상부 및 양 측부의 굴착시,The method of claim 1, wherein in the excavation of the upper and both sides, 상부를 선 굴착한 후 양 측부의 상부에서 하부의 순서로 후 굴착하는 메사실드 공법을 이용한 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법.A method for constructing a large cross section mesa tunnel using a method of placing a structure using a mesa shield method in which the upper part is excavated and then excavated in the order from the upper part to the lower part. 제1항에 있어서, 상부 및 양 측부의 굴착 후,The method of claim 1, wherein after excavation of the upper and both sides, 굴착면에 소정 두께로 콘크리트를 타설하는 것을 특징으로 하는 메사실드 공법을 이용한 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법.A method for constructing a large cross section mesa tunnel using a method of placing a structure using a mesa shield method, characterized in that concrete is poured on an excavated surface. 제3항에 있어서,The method of claim 3, 상기 콘크리트를 타설하고 양생시킨 후, 상기 콘크리트의 외부로 돌출된 상기 시설물을 제거하는 것을 특징으로 하는 메사실드 공법을 이용한 구조물 선타설 방식을 적용한 대단면 메사터널 구축방법.After placing and curing the concrete, the large-section mesa tunnel construction method applying the structure pre-positioning method using a mesa shield method characterized in that to remove the facility protruding to the outside of the concrete.
KR1020090068775A 2009-07-28 2009-07-28 Large section messer tunnel construction method appling pre-construct method of infrastructure KR20110011225A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101594818B1 (en) 2015-09-25 2016-02-17 주식회사 마성건설 Construction method of the underground structure to proceed while removing the supports
US11857230B2 (en) 2017-11-24 2024-01-02 Facegenics, Inc. Maxillary expander and protraction device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101594818B1 (en) 2015-09-25 2016-02-17 주식회사 마성건설 Construction method of the underground structure to proceed while removing the supports
US11857230B2 (en) 2017-11-24 2024-01-02 Facegenics, Inc. Maxillary expander and protraction device

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