KR200201071Y1 - Rock bolt for a tunnel - Google Patents
Rock bolt for a tunnel Download PDFInfo
- Publication number
- KR200201071Y1 KR200201071Y1 KR2020000013658U KR20000013658U KR200201071Y1 KR 200201071 Y1 KR200201071 Y1 KR 200201071Y1 KR 2020000013658 U KR2020000013658 U KR 2020000013658U KR 20000013658 U KR20000013658 U KR 20000013658U KR 200201071 Y1 KR200201071 Y1 KR 200201071Y1
- Authority
- KR
- South Korea
- Prior art keywords
- rock
- tension bolt
- mortar
- bolt
- tunnel
- Prior art date
Links
- 239000011435 rock Substances 0.000 title claims abstract description 56
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 37
- 238000002347 injection Methods 0.000 claims abstract description 15
- 239000007924 injection Substances 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims abstract description 8
- 230000001070 adhesive effect Effects 0.000 claims abstract description 8
- 230000037431 insertion Effects 0.000 claims abstract description 5
- 238000003780 insertion Methods 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
Landscapes
- 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)
- Lining And Supports For Tunnels (AREA)
Abstract
본 고안은 터널용 락볼트에 관한 것으로, 특히 터널공사시 균열되어 탈락우려가 있는 터널 표면암반층을 심층암반부에 기계적으로 고정하는 터널공사용 락볼트에 관한 것이다.The present invention relates to a rock bolt for tunnels, and more particularly to a tunnel engineering rock bolt for mechanically fixing the tunnel surface rock layer that is likely to fall off during tunnel construction to the deep rock.
본 고안의 기술 구성상의 특징은; 암반천공부(10)의 내부에 삽입되어 고정되는 접착제(20)와, 상기 접착제(20)에 삽입되어 정착되며 상기 암반천공부(10)의 외측으로 돌출되도록 형성된 인장볼트(30)와, 상기 암반천공부(10) 입구(10a)측의 인장볼트(30)외주면에 충진되어 고정되는 메움몰탈(40)과, 상기 메움몰탈(40)내부에 삽입되어 상기의 암반천공부(10)내부에 몰탈을 충진시켜주는 주입호스(50)와, 상기 주입호스(50)가 삽입되는 삽입홀(62)을 외측에 형성하고 중앙에는 인장볼트(30)가 삽입되는 인장볼트홀(61)을 형성하여 인장볼트홀(61)을 통과한 인장볼트(30)에 너트(70)를 체결하여 결합할 수 있도록 형성한 지압판(60)으로 구성된 것을 특징으로 한다.Features of the technical construction of the present invention; An adhesive 20 inserted into the rock puncture part 10 and fixed thereto, a tension bolt 30 inserted into the adhesive 20 to be fixed and protruded to the outside of the rock puncture part 10, and the Filled mortar (40) is filled and fixed to the outer peripheral surface of the tension bolt 30 on the inlet (10a) side of the rock puncture portion (10), and inserted into the fill mortar (40) inside the rock puncture portion (10) An injection hose 50 for filling mortar and an insertion hole 62 into which the injection hose 50 is inserted are formed on the outside, and a tension bolt hole 61 into which the tension bolt 30 is inserted is formed in the center. It is characterized by consisting of a pressure plate 60 formed to fasten the nut 70 to the tension bolt 30 passed through the tension bolt hole 61 to be coupled.
Description
본 고안은 터널용 락볼트에 관한 것으로, 특히 터널공사시 균열되어 탈락우려가 있는 터널 표면암반층을 심층암반부에 기계적으로 고정하는 터널공사용 락볼트에 관한 것이다.The present invention relates to a rock bolt for tunnels, and more particularly to a tunnel engineering rock bolt for mechanically fixing the tunnel surface rock layer that is likely to fall off during tunnel construction to the deep rock.
일반적으로 터널공사시 터널표면에 노출된 암반층은 공사시의 충격등으로 균열이 가기 쉬우며 이러한 균열은 노출암반층의 일부가 탈락될 우려가 있으므로 터널표면에서 심층암반부까지 천공하고 몰탈을 충진한 다음 락볼트를 삽입고정하여 노출 암반층을 심층암반부에 기계적으로 고정하고 있다.In general, the rock layer exposed to the tunnel surface during the tunnel construction is likely to crack due to the impact of the construction, and such cracks may drop off part of the exposed rock layer. Therefore, the tunnel surface is drilled from the tunnel surface to the deep rock mass and filled with mortar. Lock bolts are inserted to fix the exposed rock layer mechanically to the deep rock mass.
종래 전형적인 터널용 락볼트는 도 1의 도시와 같이 터널표면에서 심층암반부까지 천공하여 암반천공부(1)를 형성하고 상기 암반천공부(1)의 내부에 접착제(2)를 삽입한 후에 인장볼트(3)를 정착시킨다. 정착이 완료되면 상기 암반천공부(1)입구(1a)에 몰탈주입호스(4)가 설치된 몰탈흐름 방지캡(5)을 설치하여 몰탈로 주변을 밀봉,경화시킨후 상기 캡(5)에 설치된 주입호스(4)를 통해 암반천공부(1)내부에 몰탈을 충진시킨다. 몰탈 충진이 완료되면 인장볼트(3)에 너트(7)를 이용하여 지압판(6)을 고정하고 있다. 터널의 전면을 따라 이렇게 시공하면 락볼트는 터널표면에 노출된 암반을 심층암반부에 고정된 인장볼트의 인장력을 이용하여 심층암반부에 붙잡아두게 되어 탈락되는 것을 방지하게 된다.Conventional rock tunnel bolts for conventional tunnels are drilled from the tunnel surface to deep rock formations to form rock perforations (1) and tension after inserting adhesive (2) into the rock perforations (1). Fix the bolt (3). When the fixation is completed, the mortar flow prevention cap 5 having the mortar injection hose 4 is installed at the inlet 1a of the rock perforation part 1a to seal and harden the periphery with mortar, and then install the cap 5. The mortar is filled into the rock perforation part 1 through the injection hose 4. When the mortar filling is completed, the pressure plate 6 is fixed to the tension bolt 3 by using the nut 7. This construction along the front of the tunnel locks the rock exposed on the surface of the tunnel to the deep rock by using the tension of the tension bolt fixed to the deep rock to prevent it from falling off.
그러나, 이러한 종래의 터널용 락볼트는 그 이점과 함께 다음과 같은 문제점이 있다.However, such a conventional rock bolt for tunnel has the following problems with its advantages.
첫째 암반천공부내부에 몰탈충진시 몰탈흐름 방지캡이 몰탈주입압력을 견디지 못해 몰탈이 터져나와 충진이 저조하여 불량시공이 되는 문제점이 있었고 둘째 작업자가 몰탈충진 작업중에 주입압력으로 인해 몰탈이 뿜어져 나옴으로 안전사고 발생의 문제점이 있었으며 셋째 별도의 몰탈흐름 방지캡이 필요하므로 시공비 상승의 문제점이 있었다.First, when the mortar filling inside the rock perforation part, the mortar flow prevention cap could not withstand the mortar injection pressure, so the mortar broke out and the filling was poor, resulting in poor construction. Second, the mortar was sprayed due to the injection pressure during the mortar filling operation. As a result, there was a problem of occurrence of a safety accident, and thirdly, there was a problem of rising construction cost because a separate mortar flow prevention cap was required.
본 고안은 상기한 문제점을 감안하여 안출된 것으로 인장볼트 정착후 너트를 이용하여 지압판을 고정 한 다음 암반천공부내부에 몰탈을 충진하도록 구성하여서 첫째 몰탈이 터져나오는 것을 방지하여 암반천공부내부에 몰탈을 완전하게 충전할수 있도록 하여주며 둘째 암반천공부내부에 몰탈 충진작업시에 작업자의 안전을 보장하여 주며 셋째 시공성을 향상시켜 시공비를 절감하여 주는 데 그 목적이 있다.The present invention was devised in view of the above-mentioned problems, and after fixing the tension bolt, the pressure plate was fixed by using a nut, and then the mortar was filled into the rock perforation part to prevent mortar from bursting. The purpose of the present invention is to completely fill the battery, and to ensure the safety of the worker during the mortar filling work inside the rock drilling hole. The third purpose is to reduce the construction cost by improving the workability.
도 1은 종래 터널용 락볼트의 설치 상태를 나타낸 단면도1 is a cross-sectional view showing an installation state of a conventional rock bolt for tunnel
도 2는 본 고안 터널용 락볼트의 분해사시도Figure 2 is an exploded perspective view of the lock bolt for the subject innovation tunnel
도 3a, 3b, 3c는 본 고안 터널용 락볼트의 설치상태 단계를 나타낸 단면도Figure 3a, 3b, 3c is a cross-sectional view showing the installation state step of the rock bolt for tunneling the subject innovation
＜도면의 주요부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>
10: 암반천공부 10a: 입구10: rock drilling 10a: entrance
20: 접착제 30: 인장볼트20: adhesive 30: tension bolt
40: 메움몰탈 50:주입호스40: filling mortar 50: injection hose
60: 지압판 61:인장볼트홀60: Acupressure plate 61: tension bolt hole
62: 삽입홀 70:너트62: insertion hole 70: nut
본 고안의 터널용 락볼트는 도 2 내지 도 3a,b,c 에 도시되는 바와 같이 암반천공부(10)의 내부에 삽입되어 고정되는 접착제(20)와, 상기 접착제(20)에 삽입되어 정착되며 상기 암반천공부(10)의 외측으로 돌출되도록 형성된 인장볼트(30)와, 상기 암반천공부(10) 입구(10a)측의 인장볼트(30)외주면에 충진되어 고정되는 메움몰탈(40)과, 상기 메움몰탈(40)내부에 삽입되어 상기의 암반천공부(10)내부에 몰탈을 충진시켜주는 주입호스(50)와, 상기 주입호스(50)가 삽입되는 삽입홀(62)을 외측에 형성하고 중앙에는 인장볼트(30)가 삽입되는 인장볼트홀(61)을 형성하여 인장볼트홀(61)을 통과한 인장볼트(30)에 너트(70)를 체결하여 결합할 수 있도록 형성한 지압판(60)으로 구성된 것을 기술구성상의 특징으로한다.Tunnel lock bolt of the present invention is inserted into and fixed to the interior of the rock puncture portion 10, as shown in Figures 2 to 3a, b, c, and inserted into and fixed to the adhesive 20 And filling bolts 30 fixed to the outer circumferential surface of the tension bolt 30 formed to protrude to the outside of the rock perforation part 10 and the tension bolt 30 at the inlet 10a side of the rock perforation part 10. And an injection hose 50 which is inserted into the filling mortar 40 to fill the mortar into the rock perforation part 10 and an insertion hole 62 into which the injection hose 50 is inserted. Formed in the center to form a tension bolt hole 61 into which the tension bolt 30 is inserted, so that the nut 70 may be coupled to the tension bolt 30 passing through the tension bolt hole 61. It is characterized by the technical configuration that the pressure plate 60 is configured.
즉, 이와같이 구성되는 본 고안은 암반천공부(10)에 인장볼트(30) 정착후 너트(70)를 이용하여 지압판(60)을 고정 한 다음 암반천공부(10)에 몰탈을 충진하도록 구성하여서 몰탈충진작업을 용이하게 함은 물론이고, 암반천공부(10)내부에 몰탈을 완전하게 충진하여 시공성을 향상시킬 수 있는 장점을 가지게 되는 것이다.That is, the present invention constituted as described above is configured to fix the pressure plate 60 using the nut 70 after fixing the tension bolt 30 to the rock perforation part 10 and then to fill the mortar in the rock perforation part 10. Of course, to facilitate the mortar filling operation, it is to have the advantage to improve the workability by completely filling the mortar in the rock perforation (10).
이하, 도 2 내지 도 3a,b,c 에 도시되는 구체적인 실시예를 통하여 본 고안의 기술내용을 상세히 설명하면 다음과 같다.Hereinafter, the technical details of the present invention will be described in detail with reference to specific embodiments shown in FIGS. 2 to 3A, B, and C.
먼저, 터널 표면암반층에서 부터 심층암반부까지 인장볼트(30)가 삽입될 수 있을 정도의 직경과 길이로 천공하여 암반천공부(10)를 형성하고, 그 내부에 인장볼트(30)가 정착될 수 있도록 접착제(20)를 삽입한후, 상기 암반천공부(10)의 길이보다 긴 길이로 형성된 인장볼트(30)를 정착시킨다. 인장볼트(30)의 정착이 완료되면 상기 암반천공부(10)입구(10a)에 주입호스(50)를 삽입하고 메움몰탈(40)로 암반천공부(10)측의 인장볼트(30)외주면과 암반천공부(10)입구(10a) 주변을 밀봉,경화시킨다음, 사각판체형으로 만들어 지며 주입호스(50)가 삽입되는 삽입홀(62)이 외측에 형성되고 중앙에는 인장볼트(30)가 삽입되는 인장볼트홀(61)을 형성한 지압판(60)을 상기 암반천공부(10)입구(10a)측에 인장볼트홀(61)을 통과한 인장볼트(30)에 너트(70)를 체결하여 고정 설치한후 상기 주입호스(50)를 통해 암반천공부(10)내부에 몰탈을 주입충진한다.First, to form a rock perforation part 10 by drilling the diameter and length enough to insert the tension bolt 30 from the tunnel surface rock layer to the deep rock mass, the tension bolt 30 is to be fixed therein After inserting the adhesive 20 so that the fixing bolt 30 is formed to a length longer than the length of the rock perforation 10. When the fixing bolt 30 is completed, the injection hose 50 is inserted into the inlet 10a of the rock perforation part 10 and the outer bolt surface 30 of the tension bolt 30 on the rock perforation part 10 side is filled with mortar 40. After sealing and hardening the periphery of the inlet 10 and the opening 10a, an insertion hole 62 into which the injection hose 50 is inserted is formed on the outside and the tension bolt 30 is formed in the center. The nut (70) to the tension bolt (30) through which the tension bolt hole (61) having the tension bolt hole (61) into which the thread is inserted is passed through the tension bolt hole (61) on the inlet (10a) side of the arm puncture portion (10). After fastening and fastening, mortar is injected and filled into the rock perforation part 10 through the injection hose 50.
따라서, 암반천공부(10)내부의 몰탈충진시 몰탈주입 압력을 지압판(60)이 지지하여주어서 몰탈 충진작업시 최대한의 압력으로 암반천공부(10)내부에 몰탈을 완전하게 충진할 수 있는 것이다.Therefore, when the mortar filling in the rock perforation part 10 supports the mortar injection pressure by the acupressure plate 60, the mortar may be completely filled in the rock perforation part 10 with the maximum pressure during the mortar filling operation. .
이와 같이 구성되고 실시되는 본 고안의 터널용 락볼트는 암반천공부(10)에 인장볼트(30)정착후 너트(70)를 이용하여 지압판(60)을 고정 한 다음 암반천공부(10)에 몰탈을 충진하도록 함으로써, 몰탈충진시 몰탈이 터져나오는 것을 미연에 방지하여 줌으로서 최대압력으로 완전충전을 가능하게 하고, 작업자의 안전을 보장하여 주며, 시공성을 향상하여 시공비를 절감하여 주는등의 효과가 있는 것이다.Tunneled rock bolt of the present invention is configured and carried out as described above to fix the pressure plate 60 by using a nut 70 after fixing the tension bolt 30 to the rock drilling hole 10 to the rock drilling hole 10 By filling the mortar, it prevents the mortar from bursting during the mortar filling, enabling full filling at the maximum pressure, guaranteeing the safety of the worker, and improving the workability to reduce the construction cost. There is.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2020000013658U KR200201071Y1 (en) | 2000-05-15 | 2000-05-15 | Rock bolt for a tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2020000013658U KR200201071Y1 (en) | 2000-05-15 | 2000-05-15 | Rock bolt for a tunnel |
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| Publication Number | Publication Date |
|---|---|
| KR200201071Y1 true KR200201071Y1 (en) | 2000-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2020000013658U KR200201071Y1 (en) | 2000-05-15 | 2000-05-15 | Rock bolt for a tunnel |
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| Country | Link |
|---|---|
| KR (1) | KR200201071Y1 (en) |
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2000
- 2000-05-15 KR KR2020000013658U patent/KR200201071Y1/en not_active IP Right Cessation
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