WO2013005944A2 - Protective structure for the mouth of an unfinished tunnel - Google Patents
Protective structure for the mouth of an unfinished tunnel Download PDFInfo
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- WO2013005944A2 WO2013005944A2 PCT/KR2012/005114 KR2012005114W WO2013005944A2 WO 2013005944 A2 WO2013005944 A2 WO 2013005944A2 KR 2012005114 W KR2012005114 W KR 2012005114W WO 2013005944 A2 WO2013005944 A2 WO 2013005944A2
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- Prior art keywords
- tunnel
- shotcrete
- shaft
- lining
- primary
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- 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
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- 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
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- 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
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
Definitions
- the present invention relates to a protective structure of a non-demolition tunnel shaft, and more particularly, to construct a protective tunnel, which is a temporary structure installed to protect workers and construction equipment from falling rocks or earth and sand at the tunnel shaft with excavation of the tunnel.
- the present invention relates to a protective structure of a non-demolition tunnel shaft portion to be included in a structure forming a shaft portion without being demolished at the same time and to be utilized as an outer formwork for constructing an open tunnel.
- the supporting materials are placed in sequence while rock and soil are excavated at the entrance of the tunnel, and a plurality of interval supports are interposed between the supporting materials to support the supporting materials.
- shotcrete is placed on the support material, which is the interval support, to perform the primary tunnel excavation work.
- the steel support method (ASSM) method in which steel material and concrete lining are considered as the main material, and the ground itself is considered as the main material
- NATM New, which is reinforced with shotcrete, rock-bolt, steel support, etc.
- TBN Austrian Tunneling Method
- TBM Tunnel Boring Machine Method
- tunnels are constructed with shotcrete on the excavated surface, and then a non-woven fabric or waterproof sheet is used to construct a waterproof membrane connected to the drainage channel, and concrete lining is then formed to form the tunnel wall surface and finish the interior material on the tunnel wall. By doing so.
- the surface 200 After the entrance of the tunnel, namely, NATM point, the surface 200 is formed, and then the lock-bolt 110 is installed on the upper and left and right sides of the shaft, the steel pipe multi-stage grouting 120, the wire mesh 130, the shotcrete casting 140, and the like. Slope reinforcement first, and then the trench for installing the temporary fixtures on both sides of the bottom of the foundation base, and then install the anchor bolt 160 for fixing the stiffeners 150 to install the foundation concrete 170. After pouring the shotcrete 180 toward the steel beam 150, and then the log 190 and the bale 191 is stacked to the outside of the cured shotcrete 180 to protect the temporary installation.
- the concrete lining and the open-tunnel at the NATM time point not only have a different level of height than the concrete lining, but also the waterproof membrane is constructed in two kinds of materials in the tunnel and the open-tunnel, respectively. There is a problem that the quality can not be assured of being degraded.
- the present invention is to solve the above problems, the problem is,
- the protective structure which is a temporary facility installed to protect workers and construction equipment from falling rocks or earth and sand, is included in the structure that forms the shaft as it is, without being removed during the construction of the opening tunnel. It is to provide a protective structure of the non-demolition tunnel shaft portion to be used as an outer formwork for construction.
- the present invention is a non-demolition type to improve the waterproof quality by maintaining the same adhesion of the waterproof membrane by continuously applying a single material to the waterproof membrane construction between the tunnel and the opening tunnel in the gang without any difference in materials To provide a protective structure for the tunnel shaft.
- the steel reserve 20 having a width larger than the design line of the opening concrete lining 16 from NATM point is placed at equal intervals.
- the waterproofing material is applied continuously,
- the cutoff tunnel lining is constructed.
- the waterproofing material is characterized in that it is applied continuously through the step from the shotcrete lining in the gang across the end of the primary shotcrete of the open tunnel.
- the protective structure of the present invention is a structure that serves to protect workers and construction equipment from falling rocks or earth and sand, as well as a formwork for forming an open tunnel at the same time as a conventional structure, it is necessary to dismantle. Not only that, but also the cost and time can be significantly reduced compared to the conventional.
- the protective structure according to the present invention acts as a formwork until the cut off tunnel is constructed, the quality of the conventional concrete joints is deteriorated by blocking foreign matters such as falling rocks and earth and sand from falling on the surface after assembling the cutoff tunnel. You can improve the problem.
- the waterproof membrane construction can be continuously applied to one material of the waterproof material in the gang without making a difference in the material in the tunnel and the open tunnel, the adhesion of the waterproof membrane is remarkably compared to the prior art. Improved, good waterproof quality can be expected.
- Figure 1a is a side cross-sectional view showing the construction state of the temporary construction of the shaft portion of the tunnel.
- FIG. 1B is an enlarged detail 'A' of FIG. 1A;
- FIG. 1C is an enlarged detailed view 'B' of FIG. 1A.
- FIG. 1D is an enlarged sectional view taken along the line C-C in FIG. 1B.
- Figure 2 is a side cross-sectional view showing the construction state of the protective structure of the non-demolition tunnel shaft according to the present invention, a corresponding view of Figure 1b.
- FIG. 3 is an enlarged sectional view taken along the line D-D in FIG.
- Figure 4 is a front sectional view of the concrete lining is poured in the opening tunnel of the shaft portion.
- FIG. 5 is a cross-sectional view taken along the line E-E of FIG.
- step 14 shotcrete lining
- lock bolt 120 steel pipe multi-stage grouting
- the protective structure of the non-demolition tunnel shaft portion is a structure of the cut tunnel 10 at a NATM point of view of an open tunnel 10 which is a tunnel shaft portion and a tunnel shaft 12. It is characterized by the position of the steel holding material 20 to be.
- the stiffener 20 is concentric with the tunnel of the shaft 12 and at the same time larger than the width (excavation design line) of the shaft 12, the terminal 13 is formed at the NATM time point, the opening portion It is fixed to the bottom of the tunnel so that it is wider than the concrete lining design line.
- the primary shotcrete 22 is poured and cured in accordance with the plan line outside the open-tunnel concrete lining 16 to the upper portion of the fixed steel plate 20 is fixed.
- the protective structure according to the present invention by casting the secondary shotcrete 24 to the upper portion of the primary shotcrete 22 to a design thickness that can sufficiently withstand from falling rocks or earth and sand, etc. This is built.
- the tunnel shaft protection structure according to the present invention is nonwoven and waterproof over the primary shotcrete 22 of the open tunnel 10 from the shotcrete lining 14 of the shaft 12, as shown in Figs.
- Waterproofing material 30 made of a sheet is applied, this waterproofing material 30 is preferably applied continuously without interruption to maintain uniform adhesiveness.
- the tunnel shaft protection structure according to the present invention is constructed as a non-demolition type unlike the conventional one, the inner surface of the primary shotcrete 22 is used as an external formwork when the open tunnel concrete lining 16 is poured. There is this.
- the reason why the stiffeners 20 installed in the cut off tunnel 10 puts the step 13 at the NATM point is as described above, the construction of the waterproofing material 30 and the reinforcing bars for the construction of the cut tunnel concrete lining 16 This is to ensure a free space of the reinforcement and to secure a sufficient thickness of the open tunnel concrete lining (16).
- slope-reinforcement such as rock bolt installation, steel pipe multi-stage grouting, wire mesh, shotcrete casting, etc. is applied to the top and left and right sides of the shaft part. Omit).
- the process of constructing the foundation concrete for installing the anchor bolt and connecting the steel retaining material 20 through the anchor bolt is also the same as the conventional.
- the steel retainer 20 in the present invention has a larger width than the design line of the liner concrete lining part 16 based on the NATM point of view and installs a plurality at regular intervals.
- the plywood formwork (not shown) is fixed to the outside of the stiffeners 20 and fixed with an iron wire.
- the first shotcrete 22 is poured into the upper portion, and when curing is completed, the plywood formwork is demolished, and the second shotcrete 24 is poured onto the first shotcrete 22 in succession.
- the waterproofing material 30 made of a nonwoven fabric and a waterproof sheet is cut off from the shotcrete lining 14 surface of the pit 12 where the excavation is completed, from the shotcrete lining 14 surface to the first shotcrete 22 surface of the open tunnel 10 through the step 13. It is applied continuously without the adhesive to maintain uniform adhesion.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Description
본 발명은 비철거형 터널 갱구부의 보호구조물에 관한 것으로서, 더욱 상세하게는 터널의 굴착과 함께 터널 갱구부에 낙석이나 토사로부터 작업자 및 건설장비를 보호하기 위해 설치되는 가시설물인 보호구조물을 개착터널 시공시에 철거하지 않고 그대로 갱구부를 이루는 구조체에 포함되도록 함과 동시에 개착터널을 구축하기 위한 외측 거푸집으로 활용하도록 하는 비철거형 터널 갱구부의 보호구조물에 관한 것이다. The present invention relates to a protective structure of a non-demolition tunnel shaft, and more particularly, to construct a protective tunnel, which is a temporary structure installed to protect workers and construction equipment from falling rocks or earth and sand at the tunnel shaft with excavation of the tunnel. The present invention relates to a protective structure of a non-demolition tunnel shaft portion to be included in a structure forming a shaft portion without being demolished at the same time and to be utilized as an outer formwork for constructing an open tunnel.
일반적으로 터널을 시공할 때 터널의 입구측에서 암반 및 토사를 굴진시키면서 지보재를 순차적으로 입설시키고, 그 지보재를 지지하기 위해 다수의 간격지지구를 각 지보재 사이에 개재하여 지지시키며, 터널 굴진공사가 완료되면 간격지지구인 지보재에 숏크리트를 타설시켜 일차적인 터널 굴진작업을 하게 된다. In general, when the tunnel is constructed, the supporting materials are placed in sequence while rock and soil are excavated at the entrance of the tunnel, and a plurality of interval supports are interposed between the supporting materials to support the supporting materials. When completed, shotcrete is placed on the support material, which is the interval support, to perform the primary tunnel excavation work.
이러한 터널 시공방법으로는 강지보재와 콘크리트 라이닝이 주지보재로 고려된 ASSM(American Steel Support Method)공법, 지반 자체가 주요한 지보재로 고려됨과 동시에 숏크리트, 록-볼트, 강재지보 등이 보강되는 NATM(New Austrian Tunneling Method)공법 및 암반을 압쇄 굴착하는 기기를 이용하는 TBM(Tunnel Boring Machine Method)공법 등이 있으나 현재 국내에는 NATM공법이 가장 보편화되어 있고 시공경험도 풍부하며 기술이 많이 축적되어 있다. As such tunnel construction method, the steel support method (ASSM) method in which steel material and concrete lining are considered as the main material, and the ground itself is considered as the main material, and NATM (New, which is reinforced with shotcrete, rock-bolt, steel support, etc.) There is an Austrian Tunneling Method (TBN) method and a Tunnel Boring Machine Method (TBM) method using crushing and excavation of rock, but the NATM method is the most common in Korea, and the construction experience is rich and a lot of technologies are accumulated.
이러한 터널은 굴착된 면에 숏크리트를 타설한 다음 그 면 위로 부직포 또는 방수시트 등을 이용하여 배수로와 연결된 방수막 시공을 한 후 콘크리트 라이닝을 타설하여 터널 벽면을 형성하고, 그 터널 벽면에 내장재를 마무리함으로써 이루어진다.These tunnels are constructed with shotcrete on the excavated surface, and then a non-woven fabric or waterproof sheet is used to construct a waterproof membrane connected to the drainage channel, and concrete lining is then formed to form the tunnel wall surface and finish the interior material on the tunnel wall. By doing so.
한편, 터널의 갱구부에는 도 1a 내지 도1d 에 도시된 바와 같이 낙석 또는 토사붕락으로부터 작업자와 건설장비들을 보호하기 위해 터널의 갱구부로부터 일정거리 돌출되는 형태로 가시설물을 설치하게 되는데, 그 가시설물에 대해 설명하면 다음과 같다. On the other hand, the shaft portion of the tunnel as shown in Figure 1a to 1d to install a temporary fixture in the form of protruding from the shaft portion of the tunnel in order to protect workers and construction equipment from rockfall or earth and sand collapse. The following describes the facilities.
터널의 입구 즉, NATM시점을 경계로 하여 법면(200) 형성 후 갱구부의 상단 및 좌우측에 록-볼트(110) 설치, 강관 다단 그라우팅(120), 와이어메쉬(130), 숏크리트 타설(140) 등 사면 보강을 먼저 한 다음 기초 바닥 하부 양쪽에 가시설물을 설치하기 위한 터파기를 한 다음 거푸집을 대고 강지보재(150) 고정을 위한 앵커볼트(160) 설치 후 기초콘크리트(170)를 타설한다. 이 후 강재지보(150)를 향해 숏크리트(180)를 타설한 다음 양생이 끝난 숏크리트(180) 외측으로 통나무(190)와 가마니(191)를 면접되게 쌓아 가시설물을 보호한다.After the entrance of the tunnel, namely, NATM point, the
그 후 갱내 콘크리트 라이닝 시공시 사용한 강재거푸집을 갱구부의 개착터널에 설치하고 철근조립, 콘크리트 라이닝 외측 합판거푸집을 설치하기 위해서는 상기의 가시설물을 철거해야만 한다.After that, in order to install the steel formwork used in the construction of the concrete lining in the shaft, and to install the reinforcement assembly and plywood formwork outside the concrete lining, the above-mentioned fixtures must be removed.
갱구부의 개착터널을 형성하기 위해 설치 후 철거해야 하는 종래의 가시설물은 다음과 같은 문제점을 초래한다.Conventional temporary fixtures that must be removed after installation to form an open tunnel in the shaft portion cause the following problems.
낙석 또는 토사붕락으로부터 작업자와 건설장비들을 보호하기 위해 임시적으로 설치되는 가시설물과 개착터널 콘크리트 라이닝을 타설하기 위한 거푸집은 반드시 개착터널을 구축하기 위해 필수적인 준비과정이지만, 그 가시설물과 거푸집의 설치 및 해체에 들어가는 비용 및 시간이 많이 소요된다. Temporary installations to protect workers and construction equipment from rockfall or earth and sand collapse and formwork for laying open-tunnel concrete lining are essential preparations for the construction of open tunnels, but the installation and The decommissioning is expensive and time consuming.
또한, 상기 가시설물을 해체한 상태에서는 개착터널의 철근조립을 하고 난 후 합판 거푸집을 설치하기 전까지 아무런 보호조치가 없는 상태가 되어 법면에서 토사나 암석 등의 이물질이 떨어져 콘크리트 시공이음부의 품질이 저하되는 문제점이 발생될 수 있다. In addition, in the state of dismantling the provisional equipment, there is no protective measure until the plywood formwork is installed after assembling the reinforcing tunnel. Degradation problems may occur.
또한, NATM시점에서의 콘크리트 라이닝과 개착터널 콘크리트 라이닝과는 수평높이가 다른 단차가 발생할 뿐만 아니라 방수막시공을 갱내터널과 개착터널에 두 가지의 재료로 각각 시공하게 되는데, 이때 방수막의 접착성이 저하되어 품질을 확신할 수 없는 문제점이 있다. In addition, the concrete lining and the open-tunnel at the NATM time point not only have a different level of height than the concrete lining, but also the waterproof membrane is constructed in two kinds of materials in the tunnel and the open-tunnel, respectively. There is a problem that the quality can not be assured of being degraded.
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로서 그 과제는, The present invention is to solve the above problems, the problem is,
터널의 굴착과 함께 터널 갱구부에 낙석이나 토사로부터 작업자 및 건설장비를 보호하기 위해 설치되는 가시설물인 보호구조물을 개착터널 시공시에 철거하지 않고 그대로 갱구부를 이루는 구조체에 포함되도록 함과 동시에 개착터널을 구축하기 위한 외측 거푸집으로 활용하도록 하는 비철거형 터널 갱구부의 보호구조물을 제공하는 데 있다. In addition to the excavation of the tunnel, the protective structure, which is a temporary facility installed to protect workers and construction equipment from falling rocks or earth and sand, is included in the structure that forms the shaft as it is, without being removed during the construction of the opening tunnel. It is to provide a protective structure of the non-demolition tunnel shaft portion to be used as an outer formwork for construction.
또한, 본 발명은 갱내의 터널과 개착터널 간의 방수막 시공을 재료의 차이를 두지 않고 한 가지의 재료를 연속적으로 시공함으로써 방수막의 접착성을 동일하게 유지하여 방수품질향상을 꾀하도록 하는 비철거형 터널 갱구부의 보호구조물을 제공하는 데 있다.In addition, the present invention is a non-demolition type to improve the waterproof quality by maintaining the same adhesion of the waterproof membrane by continuously applying a single material to the waterproof membrane construction between the tunnel and the opening tunnel in the gang without any difference in materials To provide a protective structure for the tunnel shaft.
이와 같은 과제를 해결하기 위해 본 발명은, In order to solve such a problem, the present invention,
터널의 갱구부에 법면의 낙석이나 토사붕락으로부터 보호하고 개착터널을 구축하기 위한 외측 거푸집으로 활용하기 위한 터널 갱구부의 보호구조물을 구성함에 있어서,In constructing the protective structure of the tunnel shaft to protect the tunnel shaft from falling rocks and earth and sand collapse, and to use it as an external formwork for building an open tunnel.
터널 갱구부의 개착터널(10)에 갱내의 터널(12)과 동심원을 이룸과 동시에 NATM시점부터 개착부 콘크리트 라이닝(16) 설계선보다 큰 폭을 가진 강지보재(20)를 등간격으로 입설하고,In the
상기 강지보재(20)의 상부로 1차 숏크리트를 타설하며,Pouring the first shotcrete into the upper portion of the paper holding 20,
상기 1차 숏크리트의 상부로 소정 두께의 2차 숏크리트를 타설하되,Place a second shotcrete of a predetermined thickness on top of the primary shotcrete,
갱내의 숏크리트 라이닝으로부터 개착터널의 1차 숏크리트에 걸쳐 방수재가 이어져 도포되는 한편,From the shotcrete lining in the pit to the primary shotcrete of the open tunnel, the waterproofing material is applied continuously,
상기 개착터널의 1차 숏크리트면이 거푸집으로 활용되면서 개착터널 콘크리트 라이닝이 구축되도록 한 특징을 갖는다. As the primary shotcrete surface of the cutoff tunnel is utilized as formwork, the cutoff tunnel lining is constructed.
또한, 본 발명은 상기 과제를 해결하기 위해, In addition, the present invention to solve the above problems,
상기 방수재는 갱내의 숏크리트 라이닝으로부터 단차를 지나 개착터널의 1차 숏크리트의 단부에 걸쳐 연속적으로 도포 시공되도록 한 특징을 갖는다. The waterproofing material is characterized in that it is applied continuously through the step from the shotcrete lining in the gang across the end of the primary shotcrete of the open tunnel.
이상에서와 같은 본 발명을 터널 갱구부의 개착터널에 적용하게 되면 다음과 같은 효과가 있다. When the present invention as described above is applied to the open tunnel of the tunnel shaft portion has the following effects.
첫째, 본 발명의 보호구조물은 낙석 또는 토사붕락으로부터 작업자와 건설장비들을 보호하기 위한 역할은 물론 종래와 같은 가시설물이 아니라 개착터널을 이루기 위한 거푸집의 역할을 동시에 수행하는 구조물이기 때문에 해체과정이 필요없을 뿐만 아니라 소요비용 및 시간을 종래에 비해 훨씬 절감할 수 있게 된다.First, since the protective structure of the present invention is a structure that serves to protect workers and construction equipment from falling rocks or earth and sand, as well as a formwork for forming an open tunnel at the same time as a conventional structure, it is necessary to dismantle. Not only that, but also the cost and time can be significantly reduced compared to the conventional.
또한, 본 발명에 따른 보호구조물은 개착터널이 구축될 때까지 거푸집 역할을 하기 때문에 개착터널의 철근조립 후 법면에서 낙석이나 토사 등의 이물질이 떨어지는 것을 차단함으로써 종래 콘크리트 시공이음부의 품질이 저하되는 문제점을 개선할 수 있다.In addition, since the protective structure according to the present invention acts as a formwork until the cut off tunnel is constructed, the quality of the conventional concrete joints is deteriorated by blocking foreign matters such as falling rocks and earth and sand from falling on the surface after assembling the cutoff tunnel. You can improve the problem.
또한, 본 발명에 따른 보호구조물에 따르면 방수막시공을 갱내터널과 개착터널에 재료의 차이를 두지 않고 갱내의 방수재 한 가지 재료를 연속적으로 시공할 수 있기 때문에 방수막의 접착성이 종래에 비해 현저하게 향상되어 좋은 방수품질을 기대할 수 있다.In addition, according to the protective structure according to the present invention, since the waterproof membrane construction can be continuously applied to one material of the waterproof material in the gang without making a difference in the material in the tunnel and the open tunnel, the adhesion of the waterproof membrane is remarkably compared to the prior art. Improved, good waterproof quality can be expected.
도 1a은 터널의 갱구부의 가시설물의 구축상태를 보인 측단면 구성도.Figure 1a is a side cross-sectional view showing the construction state of the temporary construction of the shaft portion of the tunnel.
도 1b는 도 1a의 'A' 확대 상세도.FIG. 1B is an enlarged detail 'A' of FIG. 1A; FIG.
도 1c는 도 1a의 'B' 확대 상세도.FIG. 1C is an enlarged detailed view 'B' of FIG. 1A.
도 1d는 도 1b의 C - C선 확대 단면도.1D is an enlarged sectional view taken along the line C-C in FIG. 1B.
도 2는 본 발명에 따른 비철거형 터널 갱구부의 보호구조물의 구축상태를 보인 측단면 구성도로서, 도 1b의 대응도면.Figure 2 is a side cross-sectional view showing the construction state of the protective structure of the non-demolition tunnel shaft according to the present invention, a corresponding view of Figure 1b.
도 3은 도 2의 D - D선 확대 단면도.3 is an enlarged sectional view taken along the line D-D in FIG.
도 4는 갱구부의 개착터널에 콘크리트 라이닝이 타설된 상태의 정단면도.Figure 4 is a front sectional view of the concrete lining is poured in the opening tunnel of the shaft portion.
도 5는 도 4의 E - E선 단면도.5 is a cross-sectional view taken along the line E-E of FIG.
도 6은 도 5의 'F' 확대 상세도.6 is an enlarged detail 'F' of FIG.
10 : 개착터널 12 : 터널 갱내10: open tunnel 12: tunnel tunnel
13 : 단차 14 : 숏크리트 라이닝13: step 14: shotcrete lining
16 : 개착터널 콘크리트 라이닝 18 : 갱내 콘크리트 라이닝16: Opening Tunnel Concrete Lining 18: Inside Concrete Lining
20 : 강지보재 22 : 1차 숏크리트 라이닝20: steel strip material 22: primary shotcrete lining
24 : 2차 숏크리트 라이닝 30 : 방수재24: secondary shotcrete lining 30: waterproofing material
110 : 록 볼트 120 : 강관 다단 그라우팅110: lock bolt 120: steel pipe multi-stage grouting
130 : 와이어메쉬 140 : 숏크리트130: wire mesh 140: shotcrete
150 : 강지보재 160 : 앵커볼트150: steel ball 160: anchor bolt
170 : 기초 콘크리트170: foundation concrete
본 발명에 따른 비철거형 터널 갱구부의 보호구조물은 도 2 및 도 3에 도시된 바와 같이 터널 갱구부인 개착터널(10)과 터널 갱내(12)의 경계인 NATM시점으로 상기 개착터널(10)의 구조체가 되는 강지보재(20)의 입설위치에 특징이 있다.As shown in FIGS. 2 and 3, the protective structure of the non-demolition tunnel shaft portion according to the present invention is a structure of the
즉, 상기 강지보재(20)는 갱내(12)의 터널과 동심원을 이룸과 동시에 그 갱내(12)의 폭(굴착설계선)보다 크게 하고, NATM 시점에서 단자(13)가 형성되며, 개착부 콘크리트 라이닝 설계선보다 큰 폭이 되도록 하여 터널 하부에 고정 설치된다.That is, the
또한, 고정 설치된 강지보재(20)의 상부로 개착터널 콘크리트 라이닝(16) 외측 계획선에 맞추어 1차 숏크리트(22)를 타설하여 양생한다.In addition, the
상기 1차 숏크리트(22)의 양생이 완료되면 그 1차 숏크리트(22)의 상부로 2차 숏크리트(24)를 낙석이나 토사 등으로부터 충분히 견딜 수 있는 설계상의 두께로 타설함으로써 본 발명에 따른 보호구조물이 구축된다. When the curing of the
또한, 본 발명에 따른 터널 갱구부 보호구조물은 도 5 및 도 6에 도시된 바와 같이 갱내(12)의 숏크리트 라이닝(14)로부터 개착터널(10)의 1차 숏크리트(22)에 걸쳐 부직포 및 방수시트로 이루어지는 방수재(30)가 도포되는데, 이 방수재(30)는 끊김 없이 연속적으로 도포시공하여 일률적인 접착성이 유지되도록 함이 바람직하다.In addition, the tunnel shaft protection structure according to the present invention is nonwoven and waterproof over the
또한, 이러한 본 발명에 따른 터널 갱구부 보호구조물은 종래와 달리 비철거형으로 시공되기 때문에 1차 숏크리트(22)의 내측면이 개착터널 콘크리트 라이닝(16)이 타설될 때 외부 거푸집으로 활용되는 장점이 있다.In addition, since the tunnel shaft protection structure according to the present invention is constructed as a non-demolition type unlike the conventional one, the inner surface of the
한편, 상기 개착터널(10)에 설치되는 강지보재(20)가 NATM시점으로 단차(13)를 두는 이유는 앞서 설명한 바와 같이 방수재(30)의 시공 및 개착터널 콘크리트 라이닝(16) 구축을 위한 철근배근의 여유공간확보 및 상기 개착터널 콘크리트 라이닝(16)의 충분한 두께 확보를 보장하기 위함이다. On the other hand, the reason why the
이와 같이 구성된 본 발명의 시공순서를 보다 상세하게 기술하면 다음과 같다.The construction sequence of the present invention configured as described above is described in more detail as follows.
NATM시점을 경계로 하여 법면 형성 후 갱구부의 상단 및 좌우측에 록-볼트 설치, 강관 다단 그라우팅, 와이어메쉬, 숏크리트 타설 등 사면 보강을 한다(이에 대한 설명은 종래의 그것과 동일하기 때문에 번호의 부여는 생략한다).After the surface is formed at the NATM point, slope-reinforcement such as rock bolt installation, steel pipe multi-stage grouting, wire mesh, shotcrete casting, etc. is applied to the top and left and right sides of the shaft part. Omit).
또한, 앵커볼트를 설치하기 위한 기초콘크리트 구축 및 그 앵커볼트를 통해 강지보재(20)를 연결하여 입설하는 과정도 종래와 동일하다. 단 본 발명에서의 강지보재(20)는 NATM시점을 기준으로 개착부 콘크리트 라이닝(16) 설계선 보다 큰 폭을 가지고 일정 등간격으로 다수 설치한다. In addition, the process of constructing the foundation concrete for installing the anchor bolt and connecting the
개착터널(10)의 강지보재(20)의 설치가 완료되면 상기 강지보재(20)의 외측으로 합판 거푸집(도시 안됨)을 대고 철선으로 고정 설치한다.When the installation of the
이 후 1차 숏크리트(22)를 상부로 타설하고 양생이 끝나면 합판 거푸집을 철거하고 연이어 그 1차 숏크리트(22) 위로 2차 숏크리트(24)를 타설한다.After that, the
또한, 굴착이 완료된 갱내(12)의 숏크리트 라이닝(14)면으로부터 단차(13)를 거쳐 개착터널(10)의 1차 숏크리트(22)면에 걸쳐 부직포 및 방수시트로 이루어진 방수재(30)를 끊김 없이 연속적으로 도포하여 일률적인 접착성이 유지되도록 한다.In addition, the
상기와 같은 방수시공이 완료되면 개착터널 콘크리트 라이닝(16) 타설을 위한 철근(도시 안됨)을 배근 조립하고, 갱내(12)의 강재거푸집(도시 안됨)을 철근이 배근된 개착터널(10)쪽으로 옮겨 설치한 다음 개착터널 콘크리트 라이닝(16)을 타설한다. When the waterproof construction is completed, assembling the reinforcing bars (not shown) for the installation of the concrete tunnel lining 16 open tunnel, the steel formwork (not shown) of the
마지막으로 상기 개착터널 콘크리트 라이닝(16)의 양생이 완료되어 강재거푸집을 철거하게 되면, 본 발명의 비철거형 갱구부 터널 보호구조물은 완성된다.Finally, when curing of the open tunnel concrete lining 16 is completed to demolish the steel formwork, the non-demolition type shaft protection tunnel protection structure of the present invention is completed.
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110067144A KR101234401B1 (en) | 2011-07-07 | 2011-07-07 | Protective structure for a tunnel entrance |
| KR10-2011-0067144 | 2011-07-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2013005944A2 true WO2013005944A2 (en) | 2013-01-10 |
| WO2013005944A3 WO2013005944A3 (en) | 2013-02-28 |
Family
ID=47437531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2012/005114 Ceased WO2013005944A2 (en) | 2011-07-07 | 2012-06-28 | Protective structure for the mouth of an unfinished tunnel |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101234401B1 (en) |
| WO (1) | WO2013005944A2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661652A (en) * | 2018-06-01 | 2018-10-16 | 广州地铁设计研究院有限公司 | Shield launching and reception end bracing means and method in Tunneling by mining method |
| CN109931075A (en) * | 2019-04-03 | 2019-06-25 | 长江勘测规划设计研究有限责任公司 | The hole arragement construction in steep inclined shaft tunnel |
| CN110318772A (en) * | 2019-08-05 | 2019-10-11 | 西安建筑科技大学 | Canal in Loess Area is greatly across the asymmetric bore tunnel supporting construction of small interval and construction method |
| CN112502737A (en) * | 2019-09-16 | 2021-03-16 | 甘肃路桥建设集团有限公司 | Two lining slope-changing construction temporary support at slope-changing point of large longitudinal slope inclined shaft buffer platform |
| CN113236285A (en) * | 2021-06-08 | 2021-08-10 | 中国水利水电第十一工程局有限公司 | Reinforcing device for intersection of inclined shaft and main tunnel of highway tunnel and construction method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020054233A (en) * | 2000-12-27 | 2002-07-06 | 이찬우 | Shotcrete lining apparatus and constructing method the same |
| KR100890697B1 (en) * | 2007-08-24 | 2009-03-26 | 허한구 | Excavation Tunnel Construction Method of Open Tunnel |
| KR100924794B1 (en) * | 2009-04-15 | 2009-11-03 | 주식회사 에스코컨설턴트 | Influent treatment method of connection structure of underground structure and underground tunnel structure |
-
2011
- 2011-07-07 KR KR1020110067144A patent/KR101234401B1/en not_active Expired - Fee Related
-
2012
- 2012-06-28 WO PCT/KR2012/005114 patent/WO2013005944A2/en not_active Ceased
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661652A (en) * | 2018-06-01 | 2018-10-16 | 广州地铁设计研究院有限公司 | Shield launching and reception end bracing means and method in Tunneling by mining method |
| CN108661652B (en) * | 2018-06-01 | 2024-02-23 | 广州地铁设计研究院股份有限公司 | Reinforcing device and method for shield starting and receiving ends in mine tunnel |
| CN109931075A (en) * | 2019-04-03 | 2019-06-25 | 长江勘测规划设计研究有限责任公司 | The hole arragement construction in steep inclined shaft tunnel |
| CN109931075B (en) * | 2019-04-03 | 2024-04-12 | 长江勘测规划设计研究有限责任公司 | Hole arrangement structure of steep slope inclined shaft tunnel |
| CN110318772A (en) * | 2019-08-05 | 2019-10-11 | 西安建筑科技大学 | Canal in Loess Area is greatly across the asymmetric bore tunnel supporting construction of small interval and construction method |
| CN110318772B (en) * | 2019-08-05 | 2024-05-07 | 西安建筑科技大学 | Support structure and construction method of asymmetric tunnel with large span and small clearance in loess area |
| CN112502737A (en) * | 2019-09-16 | 2021-03-16 | 甘肃路桥建设集团有限公司 | Two lining slope-changing construction temporary support at slope-changing point of large longitudinal slope inclined shaft buffer platform |
| CN113236285A (en) * | 2021-06-08 | 2021-08-10 | 中国水利水电第十一工程局有限公司 | Reinforcing device for intersection of inclined shaft and main tunnel of highway tunnel and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20130005633A (en) | 2013-01-16 |
| WO2013005944A3 (en) | 2013-02-28 |
| KR101234401B1 (en) | 2013-02-18 |
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