KR20040100203A - Method for constructing multiple floor tunnel - Google Patents

Method for constructing multiple floor tunnel Download PDF

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Publication number
KR20040100203A
KR20040100203A KR1020030032463A KR20030032463A KR20040100203A KR 20040100203 A KR20040100203 A KR 20040100203A KR 1020030032463 A KR1020030032463 A KR 1020030032463A KR 20030032463 A KR20030032463 A KR 20030032463A KR 20040100203 A KR20040100203 A KR 20040100203A
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tunnel
existing
existing tunnel
retaining wall
stratum
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KR1020030032463A
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Korean (ko)
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KR100572484B1 (en
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최용기
박경욱
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박경욱
대원토질 주식회사
주식회사 삼보기술단
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/642—Cooling of the microwave components and related air circulation systems

Abstract

PURPOSE: A method of construction for a multiple floor tunnel is provided to overcome the difficulties on a construction work and the economical burden on the enormous compensation on land and to construct more tunnels without damaging the nature and the surroundings. CONSTITUTION: The method of construction for a multiple floor tunnel comprises the steps of: perforating vertical holes on the road shoulder of the existing tunnel(1); driving a steel pile in the vertical hole and grouting; excavating an interval between both steel piles and stabilizing both steel piles using a strut, etc.; and constructing the bottom(8) of the existing tunnel(1) and a retaining wall(7) using reinforced concrete(12). A ground anchor(9) is installed for the safety of a retaining wall(7) against earth pressure. After constructing an underground tunnel(10), a central steel pile is removed and a hole formed on the bottom(8) of the existing tunnel(1) is filled up with concrete(12).

Description

복층 터널 시공방법{Method for constructing multiple floor tunnel}Method for constructing multiple floor tunnel

본 발명은 기존의 터널로는 늘어나는 교통량을 감당하기 어려운 지역에 추가로 터널을, 복층 터널형태가 되도록 구축하는 방법에 관한 것이다.The present invention relates to a method for constructing a tunnel in the form of a double-layer tunnel in addition to an area where an existing tunnel is difficult to handle the increased traffic volume.

공사난이도가 높고 예산이 막대하게 소요될 것이 뻔한 험준한 산간지역이나 막대한 토지보상비 부담, 그리고 생태계와 주변 환경을 해치지 않으면서 기존의 단굴 또는 쌍굴 옆에 제2, 제3의 터널을 시공하기 곤란한 곳에 터널을 증설하려면 특단의 대책 마련이 요구된다. 하지만 아직까지도 이에 부합되는 마땅한 터널 증설방법이 제안된 바 없어 안타깝다.It is difficult to construct second and third tunnels next to existing digs or dives without damaging the ecosystem and the surrounding environment, and the rugged mountainous areas or huge land reimbursement burdens, which are likely to be difficult and budgetly expensive. To add capacity, special measures are required. However, it is unfortunate that no suitable tunnel expansion method has been proposed.

참고로, 특허 제1993-8485호에 설명된 복층 터널은 터널을 신설할 때 복층으로도 할 수 있음을 예시한 것인데, 이는 기존의 터널 밑에 제2 터널을 추가 건설하는 것이 아니라 기존의 쌍굴 사이에 제3의 터널 신설에 관한 것이란 점에서 본 발명과는 터널 증설에 대한 개념이 다르다.For reference, the double-layer tunnel described in Patent No. 1993-8485 exemplifies that it can also be a double-layer when a tunnel is newly constructed, which is not to construct a second tunnel under the existing tunnel, but between the existing double tunnels. The concept of tunnel expansion differs from the present invention in that it relates to the construction of a third tunnel.

본 발명은 기존 터널 밑에 지층 터널을 구축하는 새로운 개념의 터널 시공방법을 제공하려는 것이다.The present invention is to provide a new concept of tunnel construction method for building a stratum tunnel under the existing tunnel.

이 공법의 특징은 기존 터널의 하부 지반을 굴착하여 단층 또는 복층 터널로 시공함으로서 험준한 산작지역의 경우에는 공사의 난이도를 극복하고, 높은 지가때문에 토지보상비가 터널 증설공사비의 상당 비율을 차지하는 지역에서는 막대한 토지보상비에 대한 경제적 심리적 부담에서 벗어날 수 있는 점을 들 수 있다.The characteristic of this construction is to excavate the lower ground of the existing tunnel and construct it as a single- or double-layer tunnel, overcoming the difficulty of the construction in the rugged farming area, and enormous in the area where the land compensation cost occupies a considerable proportion of the tunnel construction cost due to the high land price. The economic and psychological burden on land reimbursement costs can be freed.

도 1은 기존 터널의 노견과 바닥의 중앙에 수직공 천공 후 강말뚝을 건입한 경우의 단면도1 is a cross-sectional view when a steel pile is inserted after drilling a vertical hole in the center and the bottom of the existing tunnel.

도 2는 하부 지반이 굴착된 상태의 단면도2 is a cross-sectional view of a state in which the lower ground is excavated

도 3은 기존 터널 밑에 지층 터널이 완성된 경우의 단면도3 is a cross-sectional view of a case where a stratum tunnel is completed under an existing tunnel

도 4는 기존 터널과 지층 터널의 진출입로의 예시도4 is an exemplary view of the entry and exit of the existing tunnel and the stratum tunnel

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1: 기존 터널 2: 수직공1: existing tunnel 2: vertical hole

3: 강말뚝 4: 하부 지반3: river pile 4: lower ground

5: 콘크리트 기초 6: (지층 터널의) 바닥5: concrete foundation 6: floor (of stratum tunnel)

7: 옹벽 8: 바닥7: retaining wall 8: bottom

9: 그라운드 앵커 10: 지층터널9: Ground Anchor 10: Geologic Tunnel

11: 구멍 12: 콘크리트11: hole 12: concrete

13: 보13: show

도 1에서, 단선 또는 복선 터널(1)의 노견에서 터널의 길이방향을 따라 전용 천공장비로 수직공(2)을 천공하고, 강관 또는 H파일 등의 강기둥(3)을 건입한다. 터널(1)이 편도 2차선 이상의 복선형인 경우에는 터널(1)의 하부 지반(4)이 연약지반일 경우에는 수직공(2)의 바닥에 콘크리트 기초(5)를 구축하여 보강한 다음에 강기둥(3)을 건입하고 그라우트재를 주입하여 토류벽 대용으로 할 수도 있다.In Fig. 1, the vertical hole 2 is drilled with a dedicated drilling equipment along the longitudinal direction of the tunnel in the single- or double-wire tunnel 1, and a steel column 3 such as a steel pipe or an H pile is inserted. In the case where the tunnel 1 is a double-line or more than one-way, the lower ground 4 of the tunnel 1 is a soft ground, the concrete foundation 5 is constructed on the bottom of the vertical hole 2 and reinforced. The pillar 3 may be inserted and grout material may be injected to replace the earth wall.

도 2에서, 단차선인 경우에는 곧장 하부 지반(4)을 굴착하고 철근 콘크리트로 바닥(6)을 시공한데 이어 옹벽 배근과 거푸집틀 설치 및 콘크리트 타설에 의한 옹벽(7)을 구축한다. 광폭인 경우에는 하부 지반(4)의 붕괴를 고려하여 편의상 노폭의 중앙을 기점으로 양분하고 일측 부분을 선굴착한 후 바닥(6)과 옹벽(7)을 시공한 다음에 나머지 절반의 하부 지반에 대한 굴착과 바닥(6) 및 옹벽(7)을 구축한다. 이때, 강기둥(3)은 옹벽(7)의 종철근 대용으로 한다.In FIG. 2, in the case of the stepped lane, the lower ground 4 is directly excavated and the bottom 6 is constructed of reinforced concrete, followed by the installation of the retaining wall reinforcement and formwork and the retaining wall 7 by concrete placing. In the case of wide width, in consideration of the collapse of the lower ground (4), for convenience, dividing the center of the furnace width as a starting point, pre-excavating one side, and constructing the bottom (6) and the retaining wall (7), and then to the other half of the lower ground Excavation and construction of the bottom (6) and retaining wall (7). At this time, the steel pillar 3 is substituted for the longitudinal reinforcing bar of the retaining wall 7.

그리고 기존 터널(1)의 바닥(8)을 안정시키기 위하여 강기둥(3)을 지보공삼아 필요한 안전조치를 강구하는 것은 물론이다.And of course, to take the necessary safety measures using the steel pillar (3) to stabilize the bottom (8) of the existing tunnel (1).

도 3에서, 토압으로부터 옹벽(7)의 안전을 고려하여 필요하다면 그라운드 앵커(9)를 시공한다. 지층 터널(10)을 구축한 후 중앙의 강기둥(3a)은 제거하고, 기존 터널(1)의 바닥(8)에 난 구멍(11)은 콘크리트(12)로 땜질한다. 도면부호(13)는 기존 터널(1)의 바닥(8)을 보강하기 위하여 지층 터널(10)의 양측 옹벽(7)간에 보를 설치한 경우를 예시한 것이다.In FIG. 3, the ground anchor 9 is constructed if necessary in consideration of the safety of the retaining wall 7 from earth pressure. After constructing the stratum tunnel 10, the central column 3a is removed, and the holes 11 in the bottom 8 of the existing tunnel 1 are soldered with concrete 12. Reference numeral 13 illustrates a case in which beams are installed between both retaining walls 7 of the stratum tunnel 10 in order to reinforce the bottom 8 of the existing tunnel 1.

이상의 설명은 단층으로 된 지층 터널(10)에 관한 것인데, 복층도 가능하다. 복층으로 된 지층 터널은 단층의 지층 터널(10)에 비해 굴착심도가 배 이상 깊고, 이에 따라 강기둥(3)과 옹벽(7)도 배에 달한다.The above description is related to the single-layered stratum tunnel 10, which may be a double layer. In the multilayered stratum tunnel, the excavation depth is more than twice as deep as that of the stratum stratum tunnel 10, and thus, the steel columns 3 and the retaining walls 7 are also doubled.

도 4에서, 기존 터널(1)에 지층 터널(10)이 증설되지만 각 터널(1,10)과 연결되는 도로(15a,b)는 평면도로이므로 진출입구간(16)의 상부 도로는 고가화가 불가피하다.In FIG. 4, the stratum tunnel 10 is added to the existing tunnel 1, but the roads 15a and b connected to the tunnels 1 and 10 are plan views, so that the upper road of the exit 16 may be expensive. Do.

이상 설명한대로 본 발명은 기존 터널의 하부 지반을 굴착하여 단층 또는 복층 터널로 시공함으로서 험준한 산작지역의 경우에는 공사의 난이도를 극복하고 늘어나는 교통량을 소화할 수 있는 복층 터널을 구축할 수 있고, 지가가 높아 토지보상비가 막대하게 소요되는 지역에서는 토지보상비 부담과 토지소유주와의 협상에 대한 심리적 부담을 덜고 복층 터널을 구축할 수가 있다.As described above, the present invention excavates the lower ground of the existing tunnel and constructs it as a single-layer or double-layer tunnel, so that in the case of a rugged farming area, it is possible to construct a double-layer tunnel that can overcome the difficulty of the construction and digest the increased traffic. In areas where land reimbursement costs are enormous, high-level tunnels can be constructed without burdening land reimbursement costs and the psychological burden of negotiating with landowners.

게다가 자연을 손상시키지도 않고 터널 주변의 환경도 보호하면서 터널 증설이 가능하다.In addition, it is possible to expand the tunnel without damaging nature and protecting the environment around the tunnel.

Claims (4)

기존 터널의 노견에 수직공을 천공하는 단계와; 상기 수직공에 강말뚝을 건입하고 그라우팅하는 단계와; 양측 강말뚝 사이를 굴착하면서 버팀보 등으로 양측 강말뚝을 안정시키는 단계와; 굴착 후 철근-콘크리트로 바닥과 옹벽을 구축하는 단계로 이루어지는 것을 특징으로 하는 기존 터널의 하부에 지층 터널을 증축하는 시공방법.Drilling a vertical hole in the furnace of the existing tunnel; Entering and grouting a steel pile into the vertical hole; Stabilizing the two steel piles with a brace while excavating between the two steel piles; Construction method for expanding the stratum tunnel to the lower part of the existing tunnel, characterized in that the step consisting of building the bottom and retaining wall with reinforcement-concrete after the excavation. 제1항에 있어서, 상기 수직공의 바닥에 콘크리트 기초로 보강하여 강말뚝에 대한 선단지지력을 높이는 기존 터널의 하부에 지층 터널을 증축하는 시공방법.The construction method according to claim 1, wherein the ground tunnel is expanded in the lower part of the existing tunnel to enhance the tip bearing capacity of the steel pile by reinforcing the bottom of the vertical hole with a concrete foundation. 제1항에 있어서, 지층 터널의 양측 옹벽 상단을 가로지르는 보로 기존 터널의 바닥을 보강하는 기존 터널의 하부에 지층 터널을 증축하는 시공방법.The construction method according to claim 1, wherein the stratum tunnel is expanded below the existing tunnel to reinforce the bottom of the existing tunnel with a beam that crosses the upper side of both retaining walls of the stratum tunnel. 제1항 내지 제3항 중의 어느 하나에 있어서, 옹벽을 그라운드 앵커로 보강한 기존 터널의 하부에 지층 터널을 증축하는 시공방법.The construction method according to any one of claims 1 to 3, wherein a stratum tunnel is extended below the existing tunnel in which the retaining wall is reinforced with a ground anchor.
KR1020030032463A 2003-05-22 2003-05-22 Double layer tunnel construction method KR100572484B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190079588A (en) * 2019-06-21 2019-07-05 전영권 Construction Method of Duplex Tunnel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190079588A (en) * 2019-06-21 2019-07-05 전영권 Construction Method of Duplex Tunnel

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