KR100678378B1 - Shock water absorption ease one falling rock prevention watch - Google Patents

Shock water absorption ease one falling rock prevention watch Download PDF

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KR100678378B1
KR100678378B1 KR1020040074885A KR20040074885A KR100678378B1 KR 100678378 B1 KR100678378 B1 KR 100678378B1 KR 1020040074885 A KR1020040074885 A KR 1020040074885A KR 20040074885 A KR20040074885 A KR 20040074885A KR 100678378 B1 KR100678378 B1 KR 100678378B1
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wire
rockfall
spring
wire mesh
support
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KR1020040074885A
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Korean (ko)
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KR20060026135A (en
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재 술 나
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재 술 나
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
    • E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
    • E01F7/045—Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps
    • 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

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Abstract

본 발명의 충격흡수가 용이한 낙석방지망은 일정간격으로 사면(10)의 설치단턱(20)에 입설되게 설치한 다수개의 H-빔(110)과, 와이어를 얽어매어 그물 형태로 형성시킨 와이어 메쉬(120)와, 상기 와이어 메쉬(120)의 상하단 및 일정간격으로 이격되게 지지와이어(130)를 결합시키고, 상기 이격된 지지와이어(130)의 공간 사이에 H-빔(110)이 배치될 수 있도록 구비된 낙석방지망에 있어서, 상기 H-빔(110)의 양측부에 수직하향으로 결합공(111)을 형성시키고, 상기 일정간격으로 이격되게 결합된 지지와이어(130)와 결합공(111)에 탄성을 갖는 스프링(140)의 일단을 각각 고정시키며, 상기 스프링(140)의 자체 탄성에 의해 인장되면서 H-빔(110)을 중심으로 지지와이어(130)에 결합된 와이어메쉬(120)가 오므려 들면서 일정 크기의 예비 여유공간인 충격흡수부(121)를 형성시킨 것이다.The rock-absorbing prevention net of the present invention can easily absorb a plurality of H-beams 110 installed on the installation step 20 of the slope 10 at regular intervals, and wire meshes are formed in a net form by tying wires. An H-beam 110 may be disposed between the 120 and the upper and lower ends of the wire mesh 120 and the support wires 130 spaced apart by a predetermined interval, and the space of the spaced support wires 130. In the rockfall prevention net provided so as to form a coupling hole 111 in the vertical downwards on both sides of the H-beam 110, the support wire 130 and the coupling hole 111 are spaced apart at regular intervals. The wire mesh 120 is fixed to each of the ends of the spring 140 having elasticity to each other, the wire mesh 120 coupled to the support wire 130 around the H-beam 110 while being tensioned by the elasticity of the spring 140 itself. Forming a shock absorbing part 121, which is a spare free space of a predetermined size The.

낙석, 낙석방지망, 스프링Rockfall, Rockfall Protection Net, Spring

Description

충격흡수가 용이한 낙석방지망{Shock water absorption ease one falling rock prevention watch} Shock water absorption ease one falling rock prevention watch}             

도 1은 본 발명의 충격흡수가 용이한 낙석방지망을 설치한 상태를 나타낸 단면도.1 is a cross-sectional view showing a state in which the impact absorption network easy to absorb rock fall of the present invention is installed.

도 2는 본 발명의 충격흡수가 용이한 낙석방지망을 나타낸 정면도.Figure 2 is a front view showing a rock fall prevention network easy shock absorption of the present invention.

도 3은 본 발명의 충격흡수가 용이한 낙석방지망을 나타낸 설치 상태사시도.Figure 3 is a perspective view of the installation state showing the impact absorption network easy absorption of the present invention.

도 4는 본 발명의 충격흡수가 용이한 낙성방지망을 나타낸 평면도.Figure 4 is a plan view showing a fall prevention network easy shock absorption of the present invention.

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

10 : 사면 20 : 설치단턱10: slope 20: installation step

100 : 낙석방지망 110 : H-빔 100: rockfall protection network 110: H-beam

111 : 결합공 112 : 설치강선111: coupling hole 112: installation steel wire

113 : 그물메쉬 120 : 와이어 메쉬 113: mesh mesh 120: wire mesh

121 : 충격흡수부 122 : 매듭부 121: shock absorber 122: knot

130 : 지지와이어 140 : 스프링 130: support wire 140: spring

본 발명은 충격흡수가 용이한 낙석방지망에 관한 것으로서, 더욱 상세하게는 낙석의 낙하하중을 감소시키면서 외부로의 이탈을 차단시킬 수 있도록 하는 충격흡수가 용이한 낙석방지망에 관한 것이다.The present invention relates to a rockfall protection net that is easy to absorb shock, and more particularly to a rockfall protection net that can be easily absorbed to reduce the falling load while reducing the falling load of rockfall.

종래의 낙석차단용 휀스는 도로의 측면 등의 낙석 가능성이 있는 장소에 H-빔을 일정한 간격으로 설치하고 H-빔의 배면 측에 지지와이어를 좌우로 결합하되 와이어를 상하 순차적으로 일정 간격을 유지하도록 결합하고 각각의 H-빔의 고정부재로 지지와이어를 고정시킨 다음 지지와이어에 그물메쉬을 결합하여 구성하였다.Conventional rockfall fences install H-beams at regular intervals in places where there is a possibility of falling rocks on the side of the road, and couple support wires to the back side of the H-beams from side to side, while maintaining constant intervals in the vertical order. It was configured to combine so as to fix the support wire with the fixing member of each H-beam and then to combine the mesh mesh to the support wire.

그러나, 이러한 종래의 낙석차단망은 단순히 H-빔에 지지와이어 및 그물메쉬를 고정부재로 결합시킨 것으로 지지력이 크게 저하되고 이로 인하여 낙석 발생시 낙석 차단효과가 현저히 떨어 질 뿐만 아니라 장기간 사용시 와이어의 고정상태가 느슨하게 되고 심지어 고정부재의 부식 등에 의하여 떨어져 나가는 문제점이 있었다.However, the conventional rockfall blocking network simply combines the support wire and the mesh with the H-beam as a fixing member, and thus the bearing capacity is greatly reduced. Was loosened and even fell off due to corrosion of the fixing member.

또한, 낙석방지망 휀스에 지지와이어 및 그물메쉬가 팽팽하게 고정 설치되어 있어 낙석의 낙하하중을 직접적으로 받을 경우 그 강도가 약하여 손쉽게 파손되거나 외부로 낙석을 이탈 시킬 수 있는 커다란 문제점이 있었다.In addition, since the support wire and the mesh mesh is firmly installed on the rock fall prevention fence fence, when the falling load of the falling rock is directly received, its strength is weak, and there is a big problem that can be easily broken or the rock falling off.

따라서 본 발명의 주 목적은 사면의 경사진 단턱에 설치하여 낙하되는 낙석이 도로 측으로 칩입하지 못하도록 차단하는 동시에 낙석의 낙하하중을 최대한 감소시켜 낙석차단 효과를 극대화시킨 충격흡수가 용이한 낙석방지망을 제공하는데 있다. Therefore, the main object of the present invention is to install on the inclined slope of the slope to prevent the falling rock falling into the road side while at the same time reducing the falling load of the falling rock as possible to provide a shock absorbing net easy to absorb impact rock It is.

또한, 본 발명의 다른 목적은 낙석방지망의 와이어메쉬에 스프링의 탄성력에 의해 오그라든 충격흡수부가 인장되면서 낙석의 낙하하중을 최대한 흡수할 수 있도록 하여 와이어메쉬 및 지지와이어의 손상을 최대한 줄일 수 있도록 하는 충격흡수가 용이한 낙석방지망을 제공하는데 있다.
In addition, another object of the present invention is to reduce the damage to the wire mesh and support wire to the maximum by absorbing the falling load of the falling rock while the shock absorbing portion is tensioned by the elastic force of the spring to the wire mesh of the rockfall prevention net It is to provide a rock fall prevention network that is easy to absorb shock.

위와 같은 목적을 달성하기 위하여 본 발명의 충격흡수가 용이한 낙석방지망은 일정간격으로 사면의 설치단턱에 입설되게 설치한 다수개의 H-빔과, 와이어를 얽어매어 그물 형태로 형성시킨 와이어 메쉬와, 상기 와이어 메쉬의 상하단 및 일정간격으로 이격되게 지지와이어를 결합시키고, 상기 이격된 지지와이어의 공간 사이에 H-빔이 배치될 수 있도록 구비된 낙석방지망에 있어서, 상기 H-빔의 양측부에 수직하향으로 결합공을 형성시키고, 상기 일정간격으로 이격되게 결합된 지지와이어와 결합공에 탄성을 갖는 스프링의 일단을 각각 고정시키며, 상기 스프링의 자체 탄성에 의해 인장되면서 H-빔을 중심으로 지지와이어에 결합된 와이어메쉬가 오므려 들면서 일정 크기의 예비 여유공간인 충격흡수부를 형성시킨 것을 특징으로 한다.In order to achieve the above object, the rock-absorbing prevention net of the present invention easily absorbs a plurality of H-beams installed in a stepped installation step at a predetermined interval, and wire meshes formed in a net form by tying wires, The support wire is coupled to be spaced apart from the upper and lower ends of the wire mesh at a predetermined interval, and in the rockfall prevention network provided so that the H-beams can be disposed between the spaces of the spaced support wires, perpendicular to both sides of the H-beams Forming a coupling hole downward, and fixed to the support wire and the coupling hole spaced apart at a predetermined interval, respectively, one end of the spring having an elasticity, the support wire around the H-beam while being tensioned by the elasticity of the spring It is characterized in that the shock absorbing portion, which is a preliminary free space of a predetermined size, is formed by retracting the wire mesh coupled to the wire mesh.

위와 같은 바람직한 실시예를 첨부된 도면을 참조하면서 보다 상세히 설명하면 다음과 같다.When described in more detail with reference to the accompanying drawings, the preferred embodiment as described above are as follows.

도 1은 본 발명의 충격흡수가 용이한 낙석방지망을 설치한 상태를 나타낸 단면도이고, 도 2는 본 발명의 충격흡수가 용이한 낙석방지망을 나타낸 정면도이며, 도 3은 본 발명의 충격흡수가 용이한 낙석방지망을 나타낸 설치 상태사시도이고, 도 4는 본 발명의 충격흡수가 용이한 낙성방지망을 나타낸 평면도이다.1 is a cross-sectional view showing a state in which the impact absorption network is installed easily shock absorption of the present invention, Figure 2 is a front view showing the impact absorption network easy to absorb the impact of the present invention, Figure 3 is easy to absorb the impact of the present invention 4 is a perspective view illustrating an installation of a rockfall prevention net, and FIG. 4 is a plan view of the impact protection net of the present invention that is easy to absorb.

도 1 내지 도 4에서 보는 바와 같이, 본 발명의 충격흡수가 용이한 낙석방지망은 일정간격으로 사면(10)의 설치단턱(20)에 입설되게 설치한 다수개의 H-빔(110)과, 와이어를 얽어매어 그물 형태로 형성시킨 와이어 메쉬(120)와, 상기 와이어 메쉬(120)의 상하단 및 일정간격으로 이격되게 지지와이어(130)를 결합시키고, 상기 이격된 지지와이어(130)의 공간 사이에 H-빔(110)이 배치될 수 있도록 구비된 낙석방지망에 있어서, 상기 H-빔(110)의 양측부에 수직하향으로 결합공(111)을 형성시키고, 상기 일정간격으로 이격되게 결합된 지지와이어(130)와 결합공(111)에 탄성을 갖는 스프링(140)의 일단을 각각 고정시키며, 상기 스프링(140)의 자체 탄성에 의해 인장되면서 H-빔(110)을 중심으로 지지와이어(130)에 결합된 와이어메쉬(120)가 오므려 들면서 일정 크기의 예비 여유공간인 충격흡수부(121)를 형성시킨 것이다.As shown in Figures 1 to 4, the impact-absorbing rock fall prevention network of the present invention is a plurality of H-beams 110 and wires installed to be installed in the installation step 20 of the slope 10 at regular intervals, wires Tie the wire mesh 120 and the support wire 130 to be spaced apart at regular intervals and the upper and lower ends of the wire mesh 120 is formed in a mesh shape, between the space of the spaced support wire 130 In the rockfall prevention network provided so that the H-beams 110 can be arranged, the coupling holes 111 are formed vertically downward on both sides of the H-beams 110, and the support is spaced apart at regular intervals. One end of the spring 140 having elasticity is fixed to the wire 130 and the coupling hole 111, respectively, and is supported by the H-beam 110 while being tensioned by the elasticity of the spring 140. Wire mesh (120) coupled to the retracted spare holes of a certain size Which will form the impact-absorbing portion 121.

상기 H-빔(110)은 양측부에 수직 하향으로 결합공(111)을 다수개 관통시켜 스프링(140)을 통하여 지지와이어(130)를 연결 설치하되 스프링(140)의 자체 탄성에 의해 압축 인장되면서 H-빔(110)을 중심으로 와이어메쉬(120)가 오므려 들면서 일정 크기의 예비 여유공간인 충격흡수부(121)를 형성시켜 낙하되는 낙석을 받아들일때 충격흡수부(121)가 인장되면서 낙하하중을 효과적으로 흡수할 수 있도록 한다.The H-beam 110 is installed to connect the support wire 130 through the spring 140 through a plurality of coupling holes 111 in a vertical downward direction on both sides, but compression tension by the elasticity of the spring 140 itself While the wire mesh 120 is retracted around the H-beam 110 to form a shock absorbing part 121 which is a preliminary free space of a predetermined size, the shock absorbing part 121 is tensioned when receiving a falling rock. To effectively absorb the falling load.

또한, 지지와이어(130)는 대략 직사각형 형상으로 상측 및 하측의 변은 와이어 메쉬(120)의 상하단과 동일한 폭으로 하여 상기 와이어 메쉬(120)의 매듭부(122) 사이를 교차되듯이 엮고 좌측과 우측 변은 와이어메쉬(120)에서 수직방향으로 엮어 설치한다. 이러한 매듭부(122)는 공지의 와이어 메쉬(120)를 묶어 매듭 처리하는 방식에 따른다.In addition, the support wire 130 has a substantially rectangular shape and the upper and lower sides of the wire mesh 120 has the same width as the upper and lower ends of the wire mesh 120 is interwoven between the knots 122 and the left and The right side is installed in the wire mesh 120 in the vertical direction. The knot 122 is tied to a known wire mesh 120 and knotted.

더불어, 스프링(140)은 H-빔(110)에 수직방향으로 양측에 대칭되게 형성시킨 결합공에 스프링(140)의 일측을 결합하고 타측은 와이어 메쉬(120)와 일체로 엮어진 수직방향의 지지와이어(130)에 결합하여 스프링(140)의 탄성에 의하여 지지와이어(130)를 H-빔(110)을 중심으로 당겨지면서 발생되는 지지와이어(130)의 사이에 위치된 와이어메쉬(120)가 오므려 들면서 여유길이가 발생하도록 한다.In addition, the spring 140 is coupled to one side of the spring 140 to the coupling hole formed symmetrically on both sides in the vertical direction to the H-beam 110 and the other side of the vertical direction woven integrally with the wire mesh 120 The wire mesh 120 positioned between the support wires 130 generated by pulling the support wires 130 about the H-beams 110 by the elasticity of the spring 140 by being coupled to the support wires 130. The length is generated by closing.

아울러, H-빔(110)은 사면(10)의 설치단(20)에 수직으로 입설될 수도 있고 또는, 일정각도로 꺽여 입설될 수 있도록 하되 일정각도 꺽여 입설시에는 H-빔(110)의 상부와 사면(10)에 타설된 지주(미부호)에 의해 고정된 설치강선(112)를 연결 고정하여 낙석의 낙하하중을 H-빔(110)이 견고히 견딜 수 있도록 하는 동시에 설치단에 영구앵커(미부호)로 고정시킨 안착판(미부호)에 H-빔 하단을 힌지방식으로 설치하여 H-빔의 입설각도를 탄력적으로 조절 가능하게 한다.In addition, the H-beam 110 may be vertically placed on the installation end 20 of the slope 10 or may be bent at a predetermined angle, but when the angle is bent at a predetermined angle, the H-beam 110 may be installed. By connecting and fixing the installation steel wire 112 fixed by the support (unsigned) that is placed on the upper part and the slope 10, the H-beam 110 can withstand the falling load of rockfall and at the same time permanently anchors the installation end. The bottom of the H-beam is hinged on the seating plate (unsigned) fixed by (unsigned) to enable elastic adjustment of the standing angle of the H-beam.

이러한 본 발명의 충격흡수가 용이한 낙석방지망의 작용을 설명하면 다음과 같다.When explaining the action of the impact absorption network easy to absorb the impact of the present invention as follows.

먼저, 도로와 사면(10)의 경계에는 낙석방지용 휀스(미부호)가 설치되어 있고 그 후측으로 사면의 설치단턱(20)에 본 발명의 충격흡수가 용이한 낙석방지망(100)을 설치한다.First, a rockfall prevention fence (unsigned) is installed at the boundary between the road and the slope 10, and a rockfall prevention net 100 of the present invention is installed on the installation step 20 of the slope at the rear side thereof.

즉, 사면(10)에서 낙석의 위험성이 높은 부위의 전방에 설치단턱(20)을 형성시켜 설치하여 사면(10)에서 낙석되는 크기가 큰 암석 등이 1차로 설치단턱(20)에 설치된 낙석방지망(100)에 차단할 있도록 하고 도로측에 설치된 낙석방지망 휀스는 2차로 보다 작은 암석을 차단시킬 수 있도록 되어 있다.In other words, the rockfall prevention net installed on the installation step 20 is primarily formed by installing the installation step 20 in front of the high risk of falling rock on the slope 10 and having a large size of rock falling on the slope 10. It is to be blocked at (100) and the rockfall protection net fence installed on the road side is to be able to block the smaller rock in the second.

상기와 같이 사면(10)의 설치단턱(20)에 본 발명의 충격이 용이한 낙석방지망(100)을 설치한 후 오랜 풍화에 의해 암석이 낙하할 경우 낙하되는 암석의 1차 충격을 와이어메쉬(120)가 받아들이도록 한다.After installing the rockfall prevention net 100 of the present invention on the installation step 20 of the slope 10 as described above, the first impact of the rock falling when the rock falls by long weathering wire mesh ( 120) to accept.

이때, 와이어메쉬(120)는 지지와이어(130)에 의해 그 결속력을 보장받고, 더불어 와이어메쉬(120)를 H-빔(110)에 더욱 견고히 결속되도록 한다.At this time, the wire mesh 120 is ensured by the support wire 130, the binding force, and also to bind the wire mesh 120 to the H-beam 110 more firmly.

이렇게 낙석을 받아들인 와이어메쉬(120)는 스프링(140)에 의해 지지와이어(130)와 H-빔(110)의 결합공(111)에 연결되어 있음으로서, 스프링(140)의 자체탄성력에 의하여 지지와이어(130)가 H-빔(110)을 중심으로 당겨져 형성된 충격흡수부(121)가 낙석의 충격하중을 받는 와이어메쉬(120)와 동시에 인장되면서 탄력적으로 낙석의 충격하중을 감소시켜 낙석방지망(100)의 손상을 효과적으로 감소시키는 한편, 낙석의 차단을 더욱 극대화시키게 되는 것이다. The wire mesh 120 receiving the rockfall is connected to the coupling hole 111 of the support wire 130 and the H-beam 110 by the spring 140, and thus, the self-elastic force of the spring 140. The support wire 130 is pulled around the H-beam 110, the shock absorbing portion 121 is tensioned at the same time as the wire mesh 120 subjected to the impact load of the rockfall falls elastically reducing the impact load of the rockfall rock While effectively reducing the damage of (100), it will further maximize the blocking of rockfall.

이와같이, 본 발명은 낙석의 충격하중을 감소시키면서 효과적으로 낙석의 이탈을 차단시켜 낙석방지망의 영구적인 사용과 함께 손상을 효과적으로 감소시킬 수 있는 효과가 있다.As such, the present invention has the effect of effectively reducing damage with the permanent use of the rockfall prevention net by effectively blocking the fall of the rockfall while reducing the impact load of the rockfall.

이상에서 살펴본 바와 같이, 본 발명의 충격흡수가 용이한 낙석방지망은 사면의 경사진 단턱에 설치하여 낙하되는 낙석이 도로 측으로 칩입하지 못하도록 차단하는 동시에 낙석의 낙하하중을 최대한 감소시켜 낙석차단 효과를 극대화시킨 충격흡수가 용이하는 효과가 있다.As described above, the impact absorption net of the present invention is easily installed on the slope of the slope prevents falling rocks falling into the road side while preventing the falling load of the falling rocks as possible to maximize the fall effect There is an effect that the shock absorption made easy.

또한, 낙석방지망의 와이어메쉬에 스프링의 탄성력에 의해 쪼그라뜨린 충격흡수부가 인장되면서 낙석의 낙하하중을 최대한 흡수할 수 있도록 하여 와이어메쉬 및 지지와이어의 손상을 최대한 줄일 수 있도록 하는 충격흡수가 용이한 효과가 있다.








In addition, the impact absorbing portion that is broken by the elastic force of the spring is stretched to the wire mesh of the rockfall prevention network to absorb the falling load of the rockfall as much as possible, so that the damage of the wire mesh and the supporting wire can be reduced as much as possible. There is.








Claims (2)

삭제delete 일정간격으로 사면(10)의 설치단턱(20)에 입설되게 설치한 다수개의 H-빔(110)과, 와이어를 얽어매어 그물 형태로 형성시킨 와이어 메쉬(120)와, 상기 와이어 메쉬(120)의 상하단 및 일정간격으로 이격되게 지지와이어(130)를 결합시키고, 상기 이격된 지지와이어(130)의 공간 사이에 H-빔(110)이 배치될 수 있도록 구비된 낙석방지망에 있어서,A plurality of H-beams 110 installed in the installation step 20 of the slope 10 at regular intervals, the wire mesh 120 is formed in a mesh form by tying the wire, the wire mesh 120 In the upper and lower ends of the support wire 130 to be spaced apart at a predetermined interval, and the rock-resistant prevention network provided so that the H-beam 110 can be disposed between the spaced space of the support wire 130, 상기 H-빔(110)의 양측부에 수직하향으로 결합공(111)을 형성시키고,The coupling hole 111 is formed vertically downward on both sides of the H-beam 110, 상기 일정간격으로 이격되게 결합된 지지와이어(130)와 결합공(111)에 탄성을 갖는 스프링(140)의 일단을 각각 고정시키며,Fixing ends of the spring 140 having elasticity to the support wire 130 and the coupling hole 111 are spaced apart at predetermined intervals, respectively, 상기 스프링(140)의 자체 탄성에 의해 인장되면서 H-빔(110)을 중심으로 지지와이어(130)에 결합된 와이어메쉬(120)가 오므려 들면서 일정 크기의 예비 여유공간인 충격흡수부(121)를 형성시킨 것을 특징으로 하는 충격흡수가 용이한 낙석방지망.The shock absorbing part 121 is a preliminary free space of a predetermined size as the wire mesh 120 coupled to the support wire 130 is pulled around the H-beam 110 while being tensioned by the elasticity of the spring 140. Impact absorption net, characterized in that the easy to absorb rockfall.
KR1020040074885A 2004-09-18 2004-09-18 Shock water absorption ease one falling rock prevention watch KR100678378B1 (en)

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JPH07301032A (en) * 1994-05-09 1995-11-14 Tokyo Seiko Co Ltd Protective fence and reinforcing device therefor
KR20020087791A (en) * 2001-05-16 2002-11-23 추종철 Fiber Optic Processing Apparatus

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JPH07301032A (en) * 1994-05-09 1995-11-14 Tokyo Seiko Co Ltd Protective fence and reinforcing device therefor
KR20020087791A (en) * 2001-05-16 2002-11-23 추종철 Fiber Optic Processing Apparatus

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