KR0117559Y1 - Rock bolt - Google Patents

Rock bolt

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Publication number
KR0117559Y1
KR0117559Y1 KR2019950036837U KR19950036837U KR0117559Y1 KR 0117559 Y1 KR0117559 Y1 KR 0117559Y1 KR 2019950036837 U KR2019950036837 U KR 2019950036837U KR 19950036837 U KR19950036837 U KR 19950036837U KR 0117559 Y1 KR0117559 Y1 KR 0117559Y1
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KR
South Korea
Prior art keywords
bolt
hole
excavation
tunnel
drilling
Prior art date
Application number
KR2019950036837U
Other languages
Korean (ko)
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KR970023979U (en
Inventor
구인영
Original Assignee
김광수
영풍기계공업주식회사
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Application filed by 김광수, 영풍기계공업주식회사 filed Critical 김광수
Priority to KR2019950036837U priority Critical patent/KR0117559Y1/en
Publication of KR970023979U publication Critical patent/KR970023979U/en
Application granted granted Critical
Publication of KR0117559Y1 publication Critical patent/KR0117559Y1/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts
    • E21D20/02Setting anchoring-bolts with provisions for grouting
    • E21D20/028Devices or accesories for injecting a grouting liquid in a bore-hole

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)

Abstract

본 고안은 터널공사용 락크볼트에 대해 개시한다.The present invention discloses a lock bolt for tunnel use.

종래에는 터널공사시 굴착작업이나 폭파적어후 터널벽의 붕괴를 방지토록 천정부, 아치부, 측벽부에 다수의 락크볼트를 타설하였는바, 락크볼트를 삽입하기 위한 굴착작업과, 굴착작업후 락크볼트를 기우고 그 구멍사이에 모르타르나 수지등의 정착재를 주입하는 정착작업을 각각 별도로 작업하므로써 작업이 번거롭고 시간과 경비가 많이 소요되어 터널공기가 늘어나게되며, 굴착날을 구멍에서 빼내는 과정에서 구멍측벽과 접촉되어 측벽일부가 무너져내리게 되는 문제가 있었고, 정착작업시 정착재를 굴착구멍의 외측에서 내측으로 주입시켰기 때문에 그 내부의 공기가 미쳐 배출되지 못하여 락크볼트가 굴착구멍에 확실히 정착되지 못하는 문제가 있었다.Conventionally, a number of lock bolts have been placed in the ceiling, arch, and side walls to prevent the collapse of tunnel walls after excavation work or blasting during tunnel construction. By separately installing the fixing work for injecting the fixing material such as mortar or resin between the holes, the work is cumbersome, time and expense are increased, and the tunnel air is increased, and in the process of removing the drilling blade from the hole, the side wall of the hole And the side wall was collapsed due to contact with it, and the fixing material was injected from the outside of the excavation hole into the inside during the fixing operation, so that the air inside it could not be discharged and the lock bolt could not be firmly fixed in the excavation hole. there was.

본 고안에서는 락크볼트를 중앙에 관통구멍이 형성된 지지볼트와, 이 지지볼트 한쪽에 끼워지고 단부에 굴착톱니가 형성되며 중앙에 관통구멍과 연결되는 배출통로를 가지는 굴착날과 그리고 락크볼트를 굴착장비에 장착시키기 위한 연결구 그리고 락크볼트 타설후 지지볼트에 고정너트로 고정되는 지압판으로 구성시켜서 락크볼트를 굴착장비에 장착하여 터널굴착면에 굴착시켜 삽입시킨후 곧이어서 정착재를 관통구멍과 배출통로를 통해 굴착구멍 내측에서 외측으로 주입시키도록 하므로써 종래의 문제점을 해결하였다.In the present invention, a rocking bolt is provided with a support bolt having a through hole in the center, an excavation blade having a discharge tooth connected to one side of the support bolt and having an excavation tooth connected to the through hole in the center, and a rock bolt. It consists of a connector for mounting on the lock bolt and a pressure plate that is fixed to the supporting bolt after the bolt bolt is placed.The lock bolt is mounted on the excavating equipment, excavated and inserted into the tunnel excavation surface. The conventional problem has been solved by injecting from the inside of the drilling hole to the outside.

Description

터널공사용 락크볼트Lock Bolts for Tunnel Engineers

제1도는 (a) 내지 (d)는 터널공사시 지반붕괴를 방지하기 위한 락크볼트의 설치상태와 그 효과를 보이는 개략단면도들,1 (a) to (d) is a schematic cross-sectional view showing the installation state of the lock bolt and its effect to prevent ground collapse during tunnel construction,

제2도는 (a), (b), (c)는 종래의 락크볼트에 따른 문제점을 보이는 요부 측단면도들,Figure 2 is a (a), (b), (c) is a side sectional view showing the main part showing a problem according to the conventional lock bolt,

제3도는 본 고안의 락크볼트의 구성을 보이는 분리사시도,3 is an exploded perspective view showing the configuration of the lock bolt of the present invention,

제4도는 (a) 내지 (c)는 본 고안 락크볼트 설치과정 및 효과를 보이는 요부측단면도들이다.Figure 4 is a (a) to (c) is the main portion side cross-sectional view showing the process and installation of the lock bolt of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10:락크볼트 11:굴착날10: Lock bolt 11: Excavation day

12:지지볼트 13:연결구12: Support Bolt 13: End Connection

14:고정너트 16:(지지볼트의) 관통구멍14: Fixing nut 16: Through hole

17:굴착구멍 18:(굴착날의) 굴착톱니17: Excavation hole 18: Excavation saw tooth

19:(굴착날의) 배출통로 20:굴착장비19: Exhaust passage 20: Excavation equipment

21:지압판 22:정착재21: Acupressure plate 22: Fixing material

23:정착재 주입기 24:굴착면23: Fixing material injector 24: Excavation surface

본 고안은 터널공사시 굴착작업이나 폭파작업으로 인하 터널 내벽의 붕괴를 방지하도록 터널 내면의 천정부, 아치부, 측벽부에 타설하여 이완된 지반을 지지하는데 사용되는 락크볼트(Rock Bolt)에 관한 것이다.The present invention relates to a rock bolt used to support a loose ground by placing in the ceiling, arch, and side walls of the tunnel to prevent the collapse of the inner wall of the tunnel. .

일반적으로 터널(tunnel) 공사는 산이나 바다, 강의 밑을 뚫어 굴로된 철도나 도로를 만드는 토목공사로서,In general, tunnel construction is a civil engineering work that creates railroads or roads that form oysters by drilling into the bottom of a mountain, sea, or river

이러한 터널공사는 폭파작업과 굴착작업을 병행해가며 굴을 파도록 되어 있다. 이에 다라 이미 파들어간 터널의 내벽은 폭파적업과 굴착작업으로 인해 내벽의 지반이 이완된 상태이므로 이러한 상태에서 터널의 측벽공사를 하게 될경우 지반 침하로 인해 측벽이 붕괴되어 대형사고를 유발시키게 되는 결과를 초래하게 된다. 이에따라 터널의 내벽전체에는 락크볼트를 타설하여 터널내벽붕괴를 방지하도록 되어 있는데, 이러한 락크볼트에 의한 효과를 살펴보면, 첫째, 제1도 (a)에 도시된 바와같이 발파등으로 이완된 지반을 원지반에 고정시켜주는 봉합(縫合)효과가 있고, 둘재, 제1도 (b)에 도시된 바와같이 터널주변의 층을 이루고 있는 원지반은 층리면(層理面)에서 분리하여 겹친 빔으로서 거동하나, 락크볼트에 의한 층사의 조임작용에 의해 층리면에서는 전단응력의 전달을 가능하게 하여 합성빔으로써 거동시키는 빔형성 효과가 있으며, 셋째, 제1도 (c)에 도시된 바와같이 락크볼트 인장력에 상당하는 힘이 내압으로서 터널벽면에 작용하여 이에 의해 2축응력상태의 터널근반원지반을 3측응력 상태로 유지시켜주는 내압(內壓) 효과가 있고This tunnel construction is to dig a pit in parallel with the blasting and excavation work. Accordingly, the inner wall of the tunnel that has already been dug is the ground of the inner wall relaxed due to the blasting and excavation work. Therefore, when the side wall construction of the tunnel is performed in such a state, the side wall collapses due to the ground subsidence, causing large accidents. Will result. Accordingly, rock bolts are placed on the entire inner wall of the tunnel to prevent the collapse of the inner wall of the tunnel. The effect of the lock bolts is as follows. First, as shown in FIG. It has a suture effect fixed to it, and, as shown in FIG. 1 (b), the base layer forming the layer around the tunnel behaves as a superimposed beam separated from the stratified surface. There is a beam forming effect that enables the transfer of the shear stress in the stratified surface by the tightening action of the layer yarns by the bolt and acts as a composite beam. Third, the force corresponding to the tension of the lock bolt as shown in FIG. This internal pressure acts on the tunnel wall surface, thereby keeping the tunnel ground circle in the biaxial stress state in the 3-side stress state.

넷째, 제1도 (d)에 도시된 바와같이 상술한 내압효과에 의해 지반이 일체화되어 내하능력이 높아진 터널주변의 원지반의 내공측은 균등하게 변위되는 아아치형성 효과가 있게 된다.Fourth, as shown in (d) of FIG. 1, the inner surface side of the base ground around the tunnel where the ground is integrated and the load capacity is increased by the above-described pressure resistance effect is equally displaced to have an arch forming effect.

이와같이 종래에는 락크볼트는 상술한 작용과 효과등을 발휘하여 터널붕괴를 방지하게 된다.As such, the conventional lock bolts exhibit the above-described functions and effects to prevent tunnel collapse.

그런데 종래의 락크볼트는 제2도 (a)에 도시된 바와같이 굴착장비(1)에 굴착날(2)을 여결구(3)로 연결하여 일정깊이의 굴착구멍(4)을 터널벽면(5) 전체에 적정간격으로 다수개 형성한 다음 굴착구멍(4)에 락크볼트(6)를 삽입시켜서 제2도 (b)와 같이 락크볼트(6)와 굴착구멍(4) 사이에 모르타르나 수지등의 정착재(7)를 주입기로 강제 주입시켜서 락크볼트(6)를 굴착구멍(4)에 정착시킨다음 굴착구멍(4) 외측으로 돌출되 락크볼트(6)에 정착부위와 주변지반을 받쳐주도록 지압판(8)을 끼우고 고정너트(9)로 조여서 락크볼트를 설치하도록 하였다.However, in the conventional rock bolt, as shown in FIG. 2 (a), the drilling blade 2 is connected to the excavation equipment 1 by the filter opening 3 to connect the excavation hole 4 having a predetermined depth to the tunnel wall surface 5. ) And a plurality of lock bolts 6 are inserted into the excavation holes 4 in the drilling holes 4, and mortar or resin is formed between the lock bolts 6 and the excavation holes 4 as shown in FIG. To fix the lock bolt 6 to the excavation hole 4 by forcibly injecting the fixing material 7 into the injector, and protrude out of the excavation hole 4 to support the fixing part and the peripheral ground to the lock bolt 6. The acupressure plate (8) was inserted and tightened with the fixing nut (9) to install the lock bolt.

따라서 락크볼트(6)를 설치하기 위한 굴착작업과, 정착재(7)를 충진시키는 작업이 별도로 이루어지게 되므로써 락크볼트(6) 타설작업이 번잡해져서 그에따른 터널공사 소요기간 경비가 많이 소요되는 등 비경제적이고 비효율적인 문제가 있었다.Therefore, the excavation work for installing the lock bolt 6 and the work for filling the fixing material 7 are performed separately, so that the work of placing the lock bolt 6 becomes complicated, which requires a lot of expenses for tunnel construction. There was an uneconomical and inefficient problem.

또한, 골착날(2)의 굴착구멍(4)을 파들어간후 빼내는 과정에서 굴착구멍(4)의 측벽과 접촉되어 제2도 (b)와 같이 측벽일부가 모너져 내리게 되므로서 락크볼트(6)를 끼운뒤 굴착구멍(4)에 모르타르나 수지등의 정착재(7)를 주입기로 강제 주입시키게 되면 무너져내린 잡석과 섞여 정착제(7)가 락크볼트(6)를 견고하게 고정시켜 주지 못하게 되는 문제가 있었다.In addition, in the process of digging out the excavation hole (4) of the cutting edge (2) and in contact with the side wall of the excavation hole (4), as shown in FIG. ) And force the fixing material (7) such as mortar or resin into the excavation hole (4) with the injector, and mix with the collapsed rubble to prevent the fixing agent (7) from firmly fixing the lock bolt (6). There was a problem.

또한 정착재(7)를 굴착구멍(4)과 락크볼트(6) 사이로 외측에서 내측으로 주입시켰기 때문에 주입과정에서 내부공기가 외부로 배출되지 못하고, 잔류하게 되므로써 정착재 내에 공기가 혼합되어 굴착구멍(6)과 락크볼트(6) 사이에는 도면에 도시된 바와 같은 공간이 형성되므로써 락크볼트(6)가 굴착구멍(4)에 확실히 정착되지 못하여 지반붕괴 방지역할을 충분히 발휘하지 못하는 문제를 안고 있었다.In addition, since the fixing material 7 is injected from the outer side to the inner side between the digging hole 4 and the lock bolt 6, the internal air cannot be discharged to the outside during the injection process, so that air is mixed in the fixing material and the excavation hole The space between the lock bolt 6 and the lock bolt 6 was formed as shown in the drawing, so that the lock bolt 6 could not be firmly fixed in the excavation hole 4 and thus could not sufficiently serve to prevent ground collapse. .

본 고안은 이와같은 종래의 문제점들을 감안하여 안출된 것으로서, 본 고안의 목적은 락크볼트를 설치하기 위한 구멍형성작업과 정착재주입작업을 동시에 이루어지도록 하고, 정착재가 구멍내에 완전하게 주입되어 충진될 수 있도록 된 터널공사용 락크볼트를 제공하는데 있다.The present invention has been made in view of the above-described conventional problems, the object of the present invention is to perform the hole forming operation and the fixing material injection operation for installing the lock bolt at the same time, the fixing material is completely injected into the hole to be filled It is to provide lock bolts for tunnel use.

이와같은 목적을 달성하기 위한 본 고안의 터널공사용 락크볼트는 터널 내벽의 천정부, 아치부, 측벽부에 굴착장비를 다수의 구멍을 형성하여 굴착구멍에 락크볼트를 끼우고, 그외측으로 모르타르 또는 수지등의 정착제를 충진하여 정착시켜서 굴착구멍 밖으로 돌출된 지지볼트에는 고정너트로 지압판을 고정하여 터널내벽의 붕괴를 방지하도록 함에 있어서, 길게 형성되어 외면에 나사가 형성되어있고 중앙에는 관통구멍이 형성된 지지볼트와, 한족끝에 구멍을 뚫기 위한 다수의 굴착톱니가 형성되어있고 다른쪽은 지지볼트에 끼워지며 중앙에는 관통구멍으로부터 굴착구멍내부로 통하여 배출통로가 형성된 굴착날과, 지지볼트를 굴착작압시 굴착장비에 장착시키도록 지지볼트에 나사결합으로 끼워지는 연결구로 이루어져서 지지볼트의 관통구멍과 굴착날의 배출통로를 통해 정착재를 굴착구멍 내측에서 외측방향으로 주입하여 정착시킨후 굴착구멍 외측을 돌출되는 지지볼트의 한쪽끝에 공지의 상기 고정너트로 고정되는 지압판을 포함하여 이루어지는 것을 특징으로 한다.Tunnel construction lock bolts of the present invention to achieve the above object is to form a plurality of holes in the excavation equipment in the ceiling, arch portion, side wall of the tunnel inner wall and insert the lock bolt in the excavation hole, mortar or resin, etc. The fixing bolt is fixed and fixed to the support bolt protruding out of the excavation hole to fix the pressure plate with a fixing nut to prevent the collapse of the inner wall of the tunnel, which is long and is formed with a screw on the outer surface and a through hole in the center. Bolts, a number of excavation teeth for drilling holes at the end of Han Chinese are formed, the other side is fitted to the support bolts, and the excavation blade formed with a discharge passage through the inside of the excavation hole from the through hole in the center, Through-hole of support bolt, consisting of a connector that is screwed into the support bolt for mounting on equipment It is characterized in that it comprises a pressure plate fixed by the fixing nut known to one end of the support bolt protruding the outside of the excavation hole after the fixing material is injected into the outward direction from the inside of the excavation hole through the discharge passage of the excavation blade. .

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

제3도 및 제4도에서, 본 고안의 락크볼트(10)는 지지볼트(12)와, 굴착날(11) 그리고 연결구(13) 및 공지의 고정너트(14)와 지압판(21)으로 이루어진다.3 and 4, the lock bolt 10 of the present invention consists of a support bolt 12, an excavation blade 11 and the connector 13 and a known fixing nut 14 and the pressure plate 21. .

지지볼트(12)는 길게 형성되어 외면에 나사가 형성되고, 중앙에는 관통구멍(16)이 형성된다.The support bolt 12 is formed long, the screw is formed on the outer surface, the through hole 16 is formed in the center.

굴착날(11)은 한쪽끝에 굴착구멍(17)을 뚫기위한 굴착톱니(18)가 다수개 형성되어 있고, 다른쪽은 지지볼트(12)의 외측으로 끼워져 나사결합되도록 구성된다. 또한 굴착날(11)의 중앙에는 지지볼트(12)의 관통구멍(16)으로 부터 굴착구멍(17) 내부로 통하는 배출통로(19)가 형성된다. 배출통로(19)는 굴착톱니(18) 측과 굴착날(11) 양측방으로 향하도록 십자형태로 형성된다.Excavation blade 11 is formed with a plurality of excavation teeth 18 for drilling the excavation hole 17 at one end, the other is configured to be screwed to the outside of the support bolt 12. In addition, a discharge passage 19 is formed in the center of the excavation blade 11 to the inside of the excavation hole 17 from the through hole 16 of the support bolt 12. The discharge passage 19 is formed in a cross shape to face the excavation tooth 18 side and the excavation blade 11 both sides.

연결구(13)는 본 고안의 락크볼트(10)를 굴착장비(20)에 장착할대 지지볼트(12)와 굴착장비(20)를 서로 연결시키기 위해 사용되는 것으로서, 전체형상이 관형태로 되어서 내측에는 지지볼트(12)와 나사결합되기위한 나사가 형성되고, 외측은 굴착장비(20)와 나사결합 되므로서 연결구(13)에 의해 지지볼트(12)와 굴착날(11)이 전후로 이송하고 자전되면서 굴착구멍(17)을 뚫게 되는 것이다.The connector 13 is used to connect the support bolts 12 and the excavating equipment 20 to each other when the lock bolt 10 of the present invention is mounted on the excavating equipment 20, and the overall shape becomes a tubular shape. Inside the screw is formed to be screwed with the support bolt 12, the outside is screwed with the excavation equipment 20, the support bolt 12 and the excavation blade 11 is transported back and forth by the connector 13 Rotating will be drilling holes 17.

한편, 지지볼트(12)가 굴착구멍(17)에 기워져 정착된 후 굴착구멍(17) 외부로 돌출된 지지볼트(12) 한쪽끝에는 공지의 지압판(21)이 고정너트(14)에 지지되므로써 본 고안은 공기의 지압판(21)과 고정너트(14)를 포함하여 이루어진다.On the other hand, the supporting bolt 12 is supported by the fixing nut 14 at one end of the supporting bolt 12 protruding out of the drilling hole 17 after the supporting bolt 12 is fixed and fixed to the drilling hole 17. The present invention includes the pressure plate 21 and the fixing nut 14 of the air.

또한, 지지볼트(12)의 관통구멍(16)에는 도면에는 도시되지 않은 압축기에 의해 작동되어 모르타르나 수지등의 정착재(22)를 주입하는 정착재주입기(23)가 연결된다.In addition, the through hole 16 of the support bolt 12 is connected to a fixing material injector 23 which is operated by a compressor (not shown in the drawing) and injects a fixing material 22 such as mortar or resin.

상술한 지지볼트(12)와 지지볼트(12) 그리고 연결구(13)에 형성되는 나사는 왼나사로 형성된다. 이는 굴착장비(20)의 굴착작업시 그작동이 통상 오른족으로 회전되면서 진행되도록 되어 있기 때문이다.The above-described support bolt 12 and the support bolt 12 and the screw formed in the connector 13 is formed with a left hand screw. This is because the operation during the excavation work of the excavation equipment 20 is to proceed while rotating to the right foot.

이와같이 구성된 본 고안의 락크볼트(10)에 따른 설치방법 및 그 효과를 상세히 설명하면 다음과 같다.When described in detail the installation method and the effect according to the lock bolt 10 of the present invention configured as described above.

먼저, 굴착 및 발파작업이 끝난후 터널내벽에 발생된 부석을 제거하고, 굴착면(24)을 세척수로 세척한 다음 터널의 내벽의 붕괴를 방지하도록 천청부, 아치부, 측벽부에 본 고안의 락크볼트(10)을 적정간격으로 타설하게 된다.First, after the excavation and blasting work, the pumice generated in the inner wall of the tunnel is removed, and the excavating surface 24 is washed with washing water, and then the ceiling part, the arch part, and the side wall part of the present invention are installed to prevent the collapse of the inner wall of the tunnel. The lock bolt 10 is poured at appropriate intervals.

즉, 본 고안의 락크볼트(10)는 종래의 굴착작업과 정착작업을 동시에 수행할 수 있도록 구성되었는바,That is, the lock bolt 10 of the present invention is configured to perform the conventional excavation work and fixing operation at the same time,

제4도 (a)에 도시된 바와같이 굴착날(11)을 지지볼트(12) 한족에 끼운뒤 지지볼트(12)의 다른쪽에는 연결구(13)를 연결하여 연결구(13)를 굴착장비(20)에 장착시킨다.As shown in FIG. 4 (a), the excavation blade 11 is inserted into the support bolt 12 in one foot, and then the connector 13 is connected to the other side of the support bolt 12 to connect the connector 13 to the excavating equipment ( 20).

다음 도면에는 도시하지 않았으나, 굴착장비(20)를 가동시켜서 락크볼트(10) 전체를 회전시켜 굴착날(11)로서 굴착면(24)에 굴착구멍(17)을 뚫게 된다. 이때 굴착과정에는 냉가수를 함께 분사시켜 굴착작업을 원활하게 한다.Although not shown in the following figures, the drilling equipment 20 is operated to rotate the entire lock bolt 10 to drill the excavation hole 17 in the excavation surface 24 as the excavation blade 11. At this time, the excavation process is sprayed with cold water to smooth the excavation work.

상기와 같이 굴착구멍(17)을 일정깊이 뚫은 후에는 굴착구멍(17)에 끼워진 락크볼트(10)에서 연결구(13)를 제거하여 락크볼트(10)를 굴착장비(20)로 부터 분리시킨다. 이와같은 방법으로 터널 내면에 다수의 락크볼트(10)를 타설한 다음에는 제2도 (b)에 도시된 바와같이 굴착구멍(17) 외부로 돌출된 지지볼트(12)의 한쪽끝에 정착재주입기(23)를 각각 설치하고 압축기(도시안됨)를 가동시켜서 모르타르와 수지등의 정착재(22)를 주입시킨다.After the drilling hole 17 is drilled to a predetermined depth as described above, the connector 13 is removed from the lock bolt 10 fitted in the drilling hole 17 to separate the lock bolt 10 from the drilling equipment 20. After placing a plurality of lock bolts 10 on the inner surface of the tunnel in this manner, the fixing material injector is inserted into one end of the support bolts 12 protruding out of the excavation hole 17, as shown in FIG. (23) are provided respectively, and a compressor (not shown) is operated to inject fixing materials 22 such as mortar and resin.

그러면 정착재(22)는 지지볼트(12)의 관통구멍(16)을 통해 굴착날(11)의 배출통로(19)를 지나 굴착톱니(18)측과 굴착날(11)의 양측방으로 배출되므로써 장착재(22)가 굴착구멍(17) 내측에서부터 충진되어 외측으로 충진되므로써 종래와 같이 굴착구멍(17)에 공기가 잔류하지 않게된다.Then, the fixing member 22 passes through the discharge passage 19 of the drilling blade 11 through the through hole 16 of the support bolt 12 and is discharged to both sides of the drilling teeth 18 side and the drilling blade 11. Therefore, the mounting material 22 is filled from the inside of the excavation hole 17 and filled out so that air does not remain in the excavation hole 17 as in the prior art.

이와같이 정착재(22)가 충진되어 고착된후 락크볼트(10)가 정착되면 굴착구멍(17) 외부로 돌출된 지지볼트(12)에 지압판(21)을 기우고 고정너트(14)로서 고정시키면 락크볼트(10)의 타설작업이 완료되는 것이다.After the fixing material 22 is filled and fixed in this manner, when the lock bolt 10 is fixed, the pressure plate 21 is inclined to the support bolt 12 protruding outside the excavation hole 17 and fixed as the fixing nut 14. The pouring work of the lock bolt 10 is completed.

이상에서 살펴본 바와같이 본 고안의 락크볼트에 의하면 종래와 같이 굴착구멍을 형성하기 위한 굴착작업과, 굴착작업 후 락크볼트를 끼워 정착재로 정착시키는 정착작업을 각각 수행하지 않고 상기의 두작업이 한번의 작업으로 이루어지게 되므로써 작업공정이 신속하고 간편하게 이루어져 터널공사의 공기를 단축시키게 되는 효과가 있다.As described above, according to the lock bolt of the present invention, the above two operations are performed without the excavation work for forming the excavation hole and the fixation work to fix the lock bolt by fixing the fixing material after the excavation work. Since the work process is made quickly and simply because the work is made to shorten the air of the tunnel construction.

또한, 굴착구멍을 뚫은후에 락크볼트를 빼내지 않고 그 상태에서 그대로 정착재를 주입시키므로써 굴착구멍이 무너져 내려 정착재에 섞이지 않아 락크볼트가 굴착구멍에 견고하게 고정될수 있게 된다.In addition, by drilling the fixing material as it is without removing the lock bolt after drilling the drilling hole, the drilling hole collapses and does not mix with the fixing material so that the lock bolt can be firmly fixed to the drilling hole.

또한 정착재를 굴착구멍의 내측에서 외측으로 주입시키게 되므로서 종래와 같이 굴착구멍내에 공기가 잔류하지 않게되어 락크볼트가 굴착구멍에 완전하게 고정되므로써 락크볼트 타설후에 이탈되거나 유동되지 않게되는 등 본 고안의 락크볼트는 터널공사에 많은 이점들을 제공하게 된다.In addition, since the fixing material is injected from the inside of the excavation hole to the outside, air does not remain in the excavation hole as in the prior art, so that the lock bolt is completely fixed to the excavation hole so that the lock bolt is not separated or flowed after pouring the bolt. Rock bolts provide many advantages for tunnel construction.

Claims (1)

터널 내벽의 천정부, 아치부, 측벽부에 굴착장비를 다수의 구멍을 형성하여 굴착구멍에 락크볼트를 끼우고, 그 외측으로 모르타르 또는 수지등의 정착제를 충진하여 정착시켜서 상기 구멍 밖으로 돌출된 지지볼트에는 고정너트로 지압판을 고정하여 상기 터널 내벽의 붕괴를 방지하도록 함에 있어서, 길게 형성되어 외면에 나사가 형성되어있고, 중앙에는 관통구멍(16)이 형성된 지지볼트(12)와, 한족끝에 상기 굴착구멍(17)을 뚫기 위한 다수의 굴착톱니(18)가 형성되어 있고, 다른쪽은 상기 지지볼트(12)에 끼워지며 중앙에는 상기 관통구멍(16)으로부터 상기 굴착구멍(17) 내부로 통하여 배출통로(19)가 형성된 굴착날(11)과, 상기 지지볼트(12)를 굴착작압시 상기 굴착장비(20)에 장착시키도록 상기 지지볼트(12)에 나사결합으로 끼워지는 연결구(13)로 이루어져서 상기 지지볼트(12)의 관통구멍(16)과 상기 굴착날(11)의 배출통로(19)를 통해 상기 정착재(22)를 상기 굴착구멍(17) 내측에서 외측방향으로 주입하여 정착시킨후 상기 굴착구멍(17) 외측을 돌출되는 상기 지지볼트(12)의 한쪽끝에 공지의 상기 고정너트(14)로 고정되는 상기 지압판(21)을 포함하여 이루어지는 것을 특징으로 하는 터널공사용 락크볼트.Excavation equipment is formed in the ceiling, arch, and sidewall of the tunnel inner wall, and the lock bolt is inserted into the excavation hole, and the fixer is filled with a mortar or resin to fix the support to protrude out of the hole. The bolt is fixed to the bolt to fix the pressure plate to prevent collapse of the inner wall of the tunnel. The bolt is formed long and has a screw formed on an outer surface thereof, and a support bolt 12 having a through hole 16 in the center thereof, A plurality of drilling teeth 18 for drilling the drilling hole 17 is formed, the other is fitted to the support bolt 12 and in the center through the drilling hole 17 from the through hole 16 Excavation blade (11) having a discharge passage (19) and the connector 13 which is screwed to the support bolt 12 to be mounted to the excavating equipment 20 during the excavation operation of the support bolt 12 Consist of After the fixing hole 22 is injected from the inside of the drilling hole 17 and fixed through the through hole 16 of the support bolt 12 and the discharge passage 19 of the drilling blade 11, Locking bolt for tunnel construction, characterized in that it comprises the pressure plate 21 is fixed to the end of the support bolt 12 protruding the excavation hole (17) by a known fixing nut (14).
KR2019950036837U 1995-11-29 1995-11-29 Rock bolt KR0117559Y1 (en)

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KR20030056025A (en) * 2001-12-27 2003-07-04 장인희 Rock bolt
KR20020068981A (en) * 2002-06-28 2002-08-28 지앤에스건설 주식회사 steal pipe micro-pile and grouting installing method

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KR100896963B1 (en) * 2008-11-04 2009-05-12 김찬수 Rock bolt

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