JP2020147990A - Rock fall preventing device and connector - Google Patents

Rock fall preventing device and connector Download PDF

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JP2020147990A
JP2020147990A JP2019046097A JP2019046097A JP2020147990A JP 2020147990 A JP2020147990 A JP 2020147990A JP 2019046097 A JP2019046097 A JP 2019046097A JP 2019046097 A JP2019046097 A JP 2019046097A JP 2020147990 A JP2020147990 A JP 2020147990A
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wire
guide
stone
protection device
connector
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JP7199261B2 (en
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裕介 野崎
Yusuke Nozaki
裕介 野崎
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JFE Metal Products and Engineering Inc
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/23Dune restoration or creation; Cliff stabilisation

Abstract

To provide a technology that can guide a falling rock to a slope toe even if the rock falls from an inclined face.SOLUTION: A rock fall preventing device 1 according to the present invention that covers a stone R on an inclined face, comprises: a pair of wires 2 provided at a position of the inclined face that sandwiches the stone R and extends along an inclined direction; a covering member 3 that covers the stone R; and a connector 4 that movably connects the covering member 3 to the wire 2 in the inclined direction.SELECTED DRAWING: Figure 1

Description

本発明は、落石防護装置及び連結具に関する。 The present invention relates to a rock fall protection device and a connector.

道路脇や山腹地盤等に設置され、路上への落石を防止する落石対策工が知られている。落石対策工としては、落石予防工と落石防護工とがある。一般的には、位置エネルギーが大きい石がある傾斜面においては落石予防工が用いられ、位置エネルギーが小さい石がある傾斜面においては落石防護工が用いられる。 Rockfall countermeasures are known to be installed on the side of roads and on the hillside ground to prevent rocks from falling on the road. There are rockfall prevention work and rockfall protection work as rock fall countermeasure work. Generally, a rockfall prevention work is used on an inclined surface with stones having a large potential energy, and a rockfall protection work is used on an inclined surface having stones having a small potential energy.

例えば、落石の発生源を予め覆うように被せる覆式の落石防護網がある。また、落石の発生源が保全対象物から離れている場合には、傾斜面に立設した支柱部分を落石の導入口とするポケット式の落石防護網がある。落石防護網の場合には、落石の自重をネットにより支える必要があり、ネットを支えるロープやアンカには高強度な部材を用いる(例えば、特許文献1参照)。 For example, there is a cover-type rockfall protection net that covers the source of rockfall in advance. In addition, when the source of rockfall is far from the object to be protected, there is a pocket-type rockfall protection net that uses the pillars erected on the slope as the introduction port for rockfall. In the case of a rockfall protection net, it is necessary to support the weight of the rockfall by a net, and a high-strength member is used for the rope and anchor that support the net (see, for example, Patent Document 1).

特許第6440886号公報Japanese Patent No. 6440886

ところで、石は、傾斜面においては一部が地表に露出しているだけであり、実際には想定外の質量を有している場合がある。このような石に対して落石対策工を施した場合であっても、巨大な石の落下を防ぐことが困難な場合が想定される。また、傾斜面の高い位置にある位置エネルギーが大きい石に対して落石対策工を設置する場合、強度の高い部材を用いる必要があり、対策コストが大きくなることがある。 By the way, the stone is only partially exposed on the ground surface on the inclined surface, and may actually have an unexpected mass. Even if rock fall countermeasures are applied to such stones, it may be difficult to prevent the fall of huge stones. Further, when installing a rock fall countermeasure work for a stone having a large potential energy at a high position on an inclined surface, it is necessary to use a member having high strength, and the countermeasure cost may increase.

そこで、本発明は、上記課題に鑑みてなされたものであり、石が傾斜面から落下した場合であっても、落下する石を法尻まで誘導可能な技術を提供することを目的とする。 Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a technique capable of guiding a falling stone to a buttock even when the stone falls from an inclined surface.

上記課題を解決するために、本発明は、傾斜面における石を覆う落石防護装置であって、前記石を挟んだ前記傾斜面の位置に設けられ傾斜方向に沿って延びる一対のワイヤと、
前記石を覆う被覆部材と、前記被覆部材を前記ワイヤに対して前記傾斜方向において移動自在に連結する連結具と、を備えることを特徴とする。
In order to solve the above problems, the present invention is a rock fall protection device for covering a stone on an inclined surface, and a pair of wires provided at the position of the inclined surface sandwiching the stone and extending along the inclined direction.
It is characterized by comprising a covering member for covering the stone and a connecting tool for movably connecting the covering member to the wire in the inclined direction.

また、前記連結具は、前記ワイヤに沿って移動する移動部材と、前記一対のワイヤ間を延びる前記被覆部材の被覆ワイヤを支持する支持部材と、を有していてもよい。 Further, the connecting tool may have a moving member that moves along the wire and a support member that supports the covering wire of the covering member extending between the pair of wires.

また、前記連結具は、前記移動部材と前記支持部材との間に前記ワイヤと前記被覆ワイヤとの接触を防止する仕切部材を有していてもよい。 Further, the connecting tool may have a partition member between the moving member and the supporting member to prevent contact between the wire and the covering wire.

また、前記移動部材は、前記仕切部材との間に前記ワイヤを収容する収容部を有していてもよい。 Further, the moving member may have an accommodating portion for accommodating the wire between the moving member and the partition member.

また、前記支持部材は、前記仕切部材との間に前記被覆ワイヤを収容する収容部を有していてもよい。 Further, the support member may have an accommodating portion for accommodating the covering wire between the support member and the partition member.

さらに、上記課題を解決するために、本発明に係る連結具は、傾斜面における石を覆う落石防護装置が有する、前記石を挟んだ前記傾斜面の位置に設けられ傾斜方向に沿って延びる一対のワイヤと、前記石を覆う被覆部材とを、該被覆部材が前記ワイヤに対して前記傾斜方向において移動自在であるように連結することを特徴とする。 Further, in order to solve the above problems, the connecting tool according to the present invention is provided at the position of the inclined surface sandwiching the stone and extends along the inclined direction, which is provided by the rock fall protection device covering the stone on the inclined surface. The wire and the covering member covering the stone are connected so that the covering member can move with respect to the wire in the inclined direction.

本発明によれば、石が傾斜面を落下した場合であっても、落下する石を法尻まで誘導することができる。 According to the present invention, even when a stone falls on an inclined surface, the falling stone can be guided to the buttock.

本発明に係る落下防護装置の構成を説明するための斜視図である。It is a perspective view for demonstrating the structure of the fall protection device which concerns on this invention. 本発明に係る落下防護装置を側方から見た断面図である。It is sectional drawing which looked at the fall protection device which concerns on this invention from the side. 本発明に係る落下防護装置の誘導連結具の構成を説明するための分解斜視図である。It is an exploded perspective view for demonstrating the structure of the guide connector of the fall protection device which concerns on this invention. 本発明に係る落下防護装置の誘導連結具の斜視図である。It is a perspective view of the induction connector of the fall protection device which concerns on this invention. 誘導連結具が誘導ワイヤ及び横ワイヤに取り付けられた状態を示す概略図である。It is the schematic which shows the state which the induction connector is attached to the induction wire and the lateral wire. 落石防護装置の作動について説明するための概略図である。It is the schematic for demonstrating the operation of a rockfall protection device. 変形例に係る誘導連結具の分解斜視図である。It is an exploded perspective view of the guide connector which concerns on a modification.

以下に、本発明の実施の形態について、図面を参照しながら説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

本発明に係る落石防護装置1は、石Rが傾斜面に沿って落下する状況下において、石Rの落下速度及び跳躍を抑制しながら石Rを傾斜面の法尻まで誘導するものである。図1は、本発明に係る落下防護装置1の構成を説明するための斜視図である。図2は、本発明に係る落下防護装置1を側方から見た断面図である。 The rock fall protection device 1 according to the present invention guides the stone R to the buttock of the inclined surface while suppressing the falling speed and jumping of the stone R under the condition that the stone R falls along the inclined surface. FIG. 1 is a perspective view for explaining the configuration of the fall protection device 1 according to the present invention. FIG. 2 is a cross-sectional view of the fall protection device 1 according to the present invention as viewed from the side.

落石防護装置1は、傾斜面における石Rを覆う。落石防護装置1は、石Rを挟んだ傾斜面の位置に設けられ傾斜方向に沿って延びる一対の誘導ワイヤ(ワイヤ)2と、石Rを覆うワイヤネット(被覆部材)3と、ワイヤネット3を誘導ワイヤ2に対して相対的に移動可能に誘導ワイヤ2に連結する複数の誘導連結具(連結具)4と、を備える。以下、落石防護装置1の構成について具体的に説明する。 The rock fall protection device 1 covers the stone R on the inclined surface. The rock fall protection device 1 includes a pair of guide wires (wires) 2 provided at positions on an inclined surface sandwiching the stone R and extending along the inclined direction, a wire net (covering member) 3 covering the stone R, and a wire net 3. The guide wire 2 is provided with a plurality of guide couplers (connectors) 4 for connecting the guide wire 2 so as to be relatively movable relative to the guide wire 2. Hereinafter, the configuration of the rockfall protection device 1 will be specifically described.

一対の誘導ワイヤ2は、鋼製のワイヤであり、傾斜面に一部埋まっている防護対象となる石Rを挟んで傾斜面に沿って設けられている。誘導ワイヤ2の上端は、傾斜面において石Rより上側においてアンカ21により傾斜面に固定されている。誘導ワイヤ2の下端は、傾斜面の法尻においてアンカ22により傾斜面に固定されている。 The pair of guide wires 2 are steel wires, and are provided along the inclined surface with a stone R as a protection target partially buried in the inclined surface. The upper end of the guide wire 2 is fixed to the inclined surface by the anchor 21 on the inclined surface above the stone R. The lower end of the guide wire 2 is fixed to the inclined surface by the anchor 22 at the buttock of the inclined surface.

ワイヤネット3は、防護対象となる石R全体を覆っている。ワイヤネット3は、石Rが落下する場合、落下する石Rと共に誘導ワイヤ2に沿って法尻まで移動する。ワイヤネット3は、鋼製の複数の横ワイヤ(被覆ワイヤ)31と、鋼製の複数の縦ワイヤ36とを有する。ワイヤネット3は、横ワイヤ31と縦ワイヤ36とを格子状に配置することにより形成されている。横ワイヤ31は、一対の誘導ワイヤ2間を延びている。各横ワイヤ31は、傾斜面の高さ方向において互いに所定の間隔をあけて設けられている。横ワイヤ31は、両端部に環状部32を有する(図5参照)。 The wire net 3 covers the entire stone R to be protected. When the stone R falls, the wire net 3 moves along with the falling stone R to the buttock along the guide wire 2. The wire net 3 has a plurality of horizontal wires (coated wires) 31 made of steel and a plurality of vertical wires 36 made of steel. The wire net 3 is formed by arranging the horizontal wires 31 and the vertical wires 36 in a grid pattern. The lateral wire 31 extends between the pair of induction wires 2. The horizontal wires 31 are provided at predetermined intervals from each other in the height direction of the inclined surface. The lateral wire 31 has annular portions 32 at both ends (see FIG. 5).

縦ワイヤ36は、一対の誘導ワイヤ2の間で傾斜面に沿って誘導ワイヤ2の延び方向と略平行に延びている。各縦ワイヤ36は、交差する横ワイヤ31に編み込まれるようになっている。各縦ワイヤ36の両端は、傾斜面において最も上側及び最も下側にある横ワイヤ31に所定の方法により連結されている。 The vertical wire 36 extends between the pair of guiding wires 2 along the inclined surface substantially parallel to the extending direction of the guiding wires 2. Each vertical wire 36 is woven into the intersecting horizontal wires 31. Both ends of each vertical wire 36 are connected to the horizontal wires 31 on the uppermost side and the lowermost side on the inclined surface by a predetermined method.

図3は、本発明に係る落下防護装置1の誘導連結具4の構成を説明するための分解斜視図である。図4は、本発明に係る落下防護装置1の誘導連結具4の斜視図である。図5は、誘導連結具4が誘導ワイヤ2及び横ワイヤ31に取り付けられた状態を示す概略図である。誘導連結具4は、誘導ワイヤ2とワイヤネット3とを連結する。つまり、誘導ワイヤ2とワイヤネット3とは直接的に連結されておらず、誘導連結具4を介して互いに連結されている。なお、説明の便宜上、図面においては、誘導連結具4において誘導ワイヤ2が案内される方向を長手方向Lとし、ワイヤネット3の横ワイヤ31が支持される方向を短手方向Wとする。 FIG. 3 is an exploded perspective view for explaining the configuration of the guide connector 4 of the fall protection device 1 according to the present invention. FIG. 4 is a perspective view of the guide connector 4 of the fall protection device 1 according to the present invention. FIG. 5 is a schematic view showing a state in which the guide connector 4 is attached to the guide wire 2 and the lateral wire 31. The guide connector 4 connects the guide wire 2 and the wire net 3. That is, the guide wire 2 and the wire net 3 are not directly connected to each other, but are connected to each other via the guide connector 4. For convenience of explanation, in the drawings, the direction in which the guide wire 2 is guided by the guide connector 4 is defined as the longitudinal direction L, and the direction in which the lateral wire 31 of the wire net 3 is supported is defined as the lateral direction W.

誘導連結具4は、誘導ワイヤ2と横ワイヤ31との交点に設けられていて、ワイヤネット3を誘導ワイヤ2に対して傾斜面の傾斜方向において移動自在に連結する。誘導連結具4は、金属製である。誘導連結具4は、摺動板材(移動部材)41と、仕切板材(仕切部材)42と、支持板材(支持部材)43と、を有する。摺動板材41、仕切板材42及び支持板材43は、互いにボルトB及びナットNにより互いに連結されている。 The guide connector 4 is provided at the intersection of the guide wire 2 and the lateral wire 31 and movably connects the wire net 3 to the guide wire 2 in the inclined direction of the inclined surface. The induction connector 4 is made of metal. The induction connector 4 has a sliding plate material (moving member) 41, a partition plate material (partition member) 42, and a support plate material (support member) 43. The sliding plate material 41, the partition plate material 42, and the support plate material 43 are connected to each other by bolts B and nuts N.

摺動板材41は、誘導連結具4全体を誘導ワイヤ2に沿って摺動可能である。摺動板材41は、平面視略矩形状を有する。摺動板材41は、一対の平坦部41aと、案内収容部(収容部)41bと、を有する。一対の平坦部41aの間に案内収容部41bが位置する。平坦部41aは、摺動板材41の短手方向Wにおける両端部に位置し、摺動板材41において長手方向Lに延びている。平坦部41aは、4つの貫通孔41cを有する。貫通孔41cは、長手方向Lに沿って所定の間隔をあけて設けられている。 The sliding plate material 41 can slide the entire guide connector 4 along the guide wire 2. The sliding plate material 41 has a substantially rectangular shape in a plan view. The sliding plate material 41 has a pair of flat portions 41a and a guide accommodating portion (accommodating portion) 41b. The guide accommodating portion 41b is located between the pair of flat portions 41a. The flat portions 41a are located at both ends of the sliding plate member 41 in the lateral direction W, and extend in the longitudinal direction L of the sliding plate member 41. The flat portion 41a has four through holes 41c. The through holes 41c are provided at predetermined intervals along the longitudinal direction L.

案内収容部41bは、摺動板材41の短手方向Wにおける中央部において長手方向Lに延びている。案内収容部41bにおいて誘導ワイヤ2が収容される。案内収容部41bは、一対の平坦部41aに挟まれている。案内収容部41bは、摺動板材41の板厚を一定に保った状態において、支持部材43とは反対側に平坦部41aから湾曲して形成されている。誘導連結具4において、摺動部材41と仕切板材42との間で案内収容部41bの位置に、誘導ワイヤ2が挿通される挿通空間S1が形成されている。なお、誘導ワイヤ2は、挿通空間S1においては、案内収容部41bの仕切板材42に面する面に接触している。 The guide accommodating portion 41b extends in the longitudinal direction L at the central portion of the sliding plate member 41 in the lateral direction W. The guide wire 2 is accommodated in the guide accommodating portion 41b. The guide accommodating portion 41b is sandwiched between a pair of flat portions 41a. The guide accommodating portion 41b is formed so as to be curved from the flat portion 41a on the side opposite to the support member 43 in a state where the plate thickness of the sliding plate member 41 is kept constant. In the guide connector 4, an insertion space S1 through which the guide wire 2 is inserted is formed at the position of the guide accommodating portion 41b between the sliding member 41 and the partition plate member 42. The guide wire 2 is in contact with the surface of the guide accommodating portion 41b facing the partition plate member 42 in the insertion space S1.

仕切板材42は、誘導ワイヤ2とワイヤネット3の横ワイヤ31とが互いに直接接触することを防ぐ。仕切板材42は、平面視略矩形状を有する。仕切板材42の長手方向L及び短手方向Wにおける寸法は、摺動板材41と同じである。仕切板材42は、短手方向Wにおける端部付近において、摺動板材41の貫通孔41cに対応する位置に貫通孔42aを有する。 The partition plate member 42 prevents the guide wire 2 and the lateral wire 31 of the wire net 3 from coming into direct contact with each other. The partition plate member 42 has a substantially rectangular shape in a plan view. The dimensions of the partition plate member 42 in the longitudinal direction L and the lateral direction W are the same as those of the sliding plate member 41. The partition plate material 42 has a through hole 42a at a position corresponding to the through hole 41c of the sliding plate material 41 near the end portion in the lateral direction W.

支持板材43は、ワイヤネット3の横ワイヤ31を環状部32において支持する。支持板材43は、平面視略矩形状を有する。支持板材43は、一対の平坦部43aと、案内収容部(収容部)43bと、を有する。一対の平坦部43aの間に案内収容部43bが位置する。平坦部43aは、支持板材43の長手方向Lにおける両端部に位置する。平坦部43aは、4つの貫通孔43cを有する。各貫通孔43cは、摺動板材41の貫通孔41c及び仕切板材42の貫通孔42aに対応する位置に設けられている。 The support plate member 43 supports the lateral wire 31 of the wire net 3 at the annular portion 32. The support plate member 43 has a substantially rectangular shape in a plan view. The support plate member 43 has a pair of flat portions 43a and a guide accommodating portion (accommodating portion) 43b. The guide accommodating portion 43b is located between the pair of flat portions 43a. The flat portions 43a are located at both ends of the support plate member 43 in the longitudinal direction L. The flat portion 43a has four through holes 43c. Each through hole 43c is provided at a position corresponding to the through hole 41c of the sliding plate material 41 and the through hole 42a of the partition plate material 42.

案内収容部43bは、支持板材43の長手方向Lにおける中央部において短手方向Wに延びていて平坦部41bに挟まれている。案内収容部43bは、摺動板材41の案内収容部41bの延び方向に対して交差する方向に延びている。案内収容部43bにおいて、横ワイヤ31の環状部32が案内(支持)されている。横ワイヤ31は、誘導連結具4と共に移動するようになっている。 The guide accommodating portion 43b extends in the lateral direction W at the central portion in the longitudinal direction L of the support plate member 43 and is sandwiched between the flat portions 41b. The guide accommodating portion 43b extends in a direction intersecting the extending direction of the guide accommodating portion 41b of the sliding plate member 41. In the guide accommodating portion 43b, the annular portion 32 of the horizontal wire 31 is guided (supported). The lateral wire 31 is adapted to move together with the guide connector 4.

案内収容部43bは、摺動板材41の板厚を一定に保った状態において、摺動板材41とは反対側に平坦部43aから湾曲して形成されている。案内収容部43bは、摺動板材41とは反対側に平坦部43aから膨らんで弧状に形成されている。誘導連結具4において、支持板材43と仕切板材42との間で案内収容部43bの位置に、横ワイヤ31が環状部32において挿通される挿通空間S2が形成されている。誘導連結具4は、本実施の形態においては、横ワイヤ31の環状部32の内側を、摺動板材41及び仕切板材42が抜けるようになっているが、支持板材43のみが環状部32の内側を抜けるようになっていてもよい。 The guide accommodating portion 43b is formed so as to be curved from the flat portion 43a on the side opposite to the sliding plate material 41 in a state where the plate thickness of the sliding plate material 41 is kept constant. The guide accommodating portion 43b is formed in an arc shape by bulging from the flat portion 43a on the side opposite to the sliding plate member 41. In the guide connector 4, an insertion space S2 through which the horizontal wire 31 is inserted in the annular portion 32 is formed between the support plate member 43 and the partition plate member 42 at the position of the guide accommodating portion 43b. In the present embodiment, the induction connector 4 is such that the sliding plate material 41 and the partition plate material 42 come out from the inside of the annular portion 32 of the horizontal wire 31, but only the support plate material 43 is the annular portion 32. It may be designed to pass through the inside.

次に、誘導連結具4による誘導ワイヤ2とワイヤネット3との連結方法について説明する。ワイヤネット3の横ワイヤ31における環状部32に一対の誘導ワイヤ2が通っているようにする。次いで、摺動板材41を案内収容部41bにおいて誘導ワイヤ2に載せ、反対側から仕切板材42を当て付けて、誘導ワイヤ2を摺動板材41と仕切板材42との間で挟む。 Next, a method of connecting the guide wire 2 and the wire net 3 by the guide connector 4 will be described. A pair of guide wires 2 pass through the annular portion 32 of the horizontal wire 31 of the wire net 3. Next, the sliding plate material 41 is placed on the guide wire 2 in the guide accommodating portion 41b, the partition plate material 42 is applied from the opposite side, and the guide wire 2 is sandwiched between the sliding plate material 41 and the partition plate material 42.

摺動板材41と仕切板材42とを誘導ワイヤ2に沿って横ワイヤ31の環状部32の内側に移動させ、仕切板材42の側にある横ワイヤ31の環状部32が支持板材43の案内収容部43bにおいて案内されるようにする。最後に、摺動板材41、仕切板材42及び支持板材43における互いに整合した貫通孔41c,42a,43cに、摺動板材41の側からボルトBを通して支持板材43の側でナットNを締め付ける。これにより、誘導連結具4による誘導ワイヤ2とワイヤネット3とが連結される。 The sliding plate material 41 and the partition plate material 42 are moved along the guide wire 2 to the inside of the annular portion 32 of the horizontal wire 31, and the annular portion 32 of the horizontal wire 31 on the side of the partition plate material 42 guides and accommodates the support plate material 43. It is guided in the part 43b. Finally, the nut N is tightened on the side of the support plate 43 through the bolt B from the side of the sliding plate 41 into the through holes 41c, 42a, 43c which are aligned with each other in the sliding plate 41, the partition plate 42, and the support plate 43. As a result, the guide wire 2 and the wire net 3 are connected by the guide connector 4.

なお、誘導連結具4による誘導ワイヤ2とワイヤネット3との連結方法はこれに限られず、当業者であれば適宜状況に応じて誘導連結具4により誘導ワイヤ2とワイヤネット3とを連結することができる。例えば、誘導ワイヤ2を横ワイヤ31の環状部32に通さなくてもよい。この場合、横ワイヤ31の環状部32は、支持板材43における案内収容部43bのみが通るようになっている。 The method of connecting the guide wire 2 and the wire net 3 by the guide connector 4 is not limited to this, and a person skilled in the art can connect the guide wire 2 and the wire net 3 by the guide connector 4 as appropriate depending on the situation. be able to. For example, the guide wire 2 does not have to pass through the annular portion 32 of the horizontal wire 31. In this case, only the guide accommodating portion 43b of the support plate member 43 passes through the annular portion 32 of the horizontal wire 31.

次に、落石防護装置1の作動について説明する。図6は、落石防護装置1の作動について説明するための概略図であり、図6(a)は、落石防護装置1の設置状態を示す図であり、図6(b)は、落石防護装置1の作動状態を示す図である。例えば、地震や豪雨等により、地盤の状況が変化して石Rが傾斜面から落下しそうな場合、ワイヤネット3に石Rによる荷重が働く。石Rが落下する場合、石Rからワイヤネット3の横ワイヤ31への荷重が一定値を超えた場合、荷重はワイヤネット3から誘導連結具4に伝達される。より具体的には、落下しつつある石Rから、傾斜面に沿って下側に横ワイヤ31に働く荷重が誘導連結具4の支持板材43に伝達する。これにより、誘導連結具4は、誘導ワイヤ2に沿って傾斜面を緩やかに法尻に向かって摺動(移動)し始める。ワイヤネット3は、石Rと共に、誘導ワイヤ2に沿った誘導連結具4の摺動に応じて緩やかに法尻に向かって移動する。 Next, the operation of the rockfall protection device 1 will be described. 6A and 6B are schematic views for explaining the operation of the rockfall protection device 1, FIG. 6A is a diagram showing an installed state of the rockfall protection device 1, and FIG. 6B is a rockfall protection device. It is a figure which shows the operating state of 1. For example, when the ground condition changes due to an earthquake, heavy rain, or the like and the stone R is likely to fall from an inclined surface, a load due to the stone R acts on the wire net 3. When the stone R falls, when the load from the stone R to the lateral wire 31 of the wire net 3 exceeds a certain value, the load is transmitted from the wire net 3 to the induction connector 4. More specifically, the load acting on the lateral wire 31 downward along the inclined surface is transmitted from the falling stone R to the support plate member 43 of the induction connector 4. As a result, the guide connector 4 begins to gently slide (move) the inclined surface along the guide wire 2 toward the tail. The wire net 3 gently moves toward the buttock together with the stone R according to the sliding of the guide connector 4 along the guide wire 2.

以上のような誘導連結具4を有する落石防護装置1によれば、ワイヤネット3は、石Rを覆ったまま石Rの落下と共に誘導ワイヤ2に沿って移動するので、落石防護装置1に石Rによる荷重が過度にかかることを防ぐことができる。落石防護装置1により、想定以上の大きさの石Rが落下した場合であっても、石Rの落下速度及び傾斜面からの石Rの跳躍を抑制しながら、石Rを法尻まで誘導することができる。誘導連結具4により落石防護装置1への石Rの荷重低減効果を達成することができる。さらに、落石防護装置1により、巨大な石R等に対する直接的な落石防護対策を実施することができる。 According to the rockfall protection device 1 having the guide connector 4 as described above, the wire net 3 moves along the guide wire 2 with the fall of the stone R while covering the stone R. It is possible to prevent an excessive load due to R from being applied. The rock fall protection device 1 guides the stone R to the buttock while suppressing the falling speed of the stone R and the jumping of the stone R from the inclined surface even when the stone R having a size larger than expected falls. be able to. The inductive connector 4 can achieve the effect of reducing the load of the stone R on the rock fall protection device 1. Further, the rock fall protection device 1 can directly implement rock fall protection measures against a huge stone R or the like.

また、誘導連結具4は、摺動板材41と支持板材43との間に仕切板材42を有しているので、誘導ワイヤ2と横ワイヤ31とが直接的に接触して摩耗することを防ぐことができる。 Further, since the induction connector 4 has the partition plate material 42 between the sliding plate material 41 and the support plate material 43, it prevents the induction wire 2 and the lateral wire 31 from being directly contacted with each other and worn. be able to.

また、誘導連結具4は、案内収容部41bにより摺動板材41と仕切板材42との間に挿通空間S1が設けられている。誘導連結具4は、挿通空間S1内で仕切板材42に面する案内収容部41bの内周面と摺動板材41に面する仕切板材42の面との間で、誘導ワイヤ2に接触しているので、石Rから所定の荷重がかからない限り誘導ワイヤ2に対して相対的に移動することはない。 Further, the guide connector 4 is provided with an insertion space S1 between the sliding plate member 41 and the partition plate member 42 by the guide accommodating portion 41b. The guide connector 4 comes into contact with the guide wire 2 between the inner peripheral surface of the guide accommodating portion 41b facing the partition plate material 42 and the surface of the partition plate material 42 facing the sliding plate material 41 in the insertion space S1. Therefore, it does not move relative to the guide wire 2 unless a predetermined load is applied from the stone R.

次に、変形例に係る誘導連結具5について説明する。図7は、変形例に係る誘導連結具5の分解斜視図である。誘導連結具5は、金属製である。誘導連結具5は、摺動板材(摺動部材)51と、仕切板材(仕切部材)52と、2つのU字金具(支持部材)と、を有する。摺動板材51及び仕切板材52は、U字金具により互いに連結されている。摺動板材51は、平面視略方形であり、一対の平坦部51aと、案内収容部(収容部)51bと、を有する。各平坦部51aは、長手方向Lに沿って互いに所定の間隔をあけた2つの貫通孔51cを有する。仕切板材52は、幅方向Wにおける端部付近において、摺動板材51の貫通孔51cに対応する位置に貫通孔52aを有する。その他の摺動板材51及び仕切板材52の構成は、誘導連結具4における摺動板材41及び仕切板材42とほぼ同じである。 Next, the induction connector 5 according to the modified example will be described. FIG. 7 is an exploded perspective view of the guide connector 5 according to the modified example. The induction connector 5 is made of metal. The guide connector 5 has a sliding plate material (sliding member) 51, a partition plate material (partition member) 52, and two U-shaped metal fittings (support members). The sliding plate material 51 and the partition plate material 52 are connected to each other by a U-shaped metal fitting. The sliding plate member 51 has a substantially rectangular shape in a plan view, and has a pair of flat portions 51a and a guide accommodating portion (accommodating portion) 51b. Each flat portion 51a has two through holes 51c spaced apart from each other along the longitudinal direction L. The partition plate member 52 has a through hole 52a at a position corresponding to the through hole 51c of the sliding plate member 51 near the end portion in the width direction W. The configurations of the other sliding plate material 51 and the partition plate material 52 are substantially the same as those of the sliding plate material 41 and the partition plate material 42 in the induction connector 4.

U字金具は、U字ボルト53と、2つのナット54とを有する。U字ボルト53における2つの脚部53aの先端にはねじ山部53bが形成されている。U字ボルト53の脚部53aは、摺動板材51において案内収容部51bに沿って配置された貫通孔51c及び仕切板材52の貫通孔52aに挿通される。U字ボルト53の脚部53aは、仕切板材52の側から挿通され、摺動板材51から突出した部分においてナット55によって係止される。 The U-shaped metal fitting has a U-shaped bolt 53 and two nuts 54. Threaded threads 53b are formed at the tips of the two legs 53a of the U-bolt 53. The leg portion 53a of the U-shaped bolt 53 is inserted into the through hole 51c and the through hole 52a of the partition plate member 52 arranged along the guide accommodating portion 51b in the sliding plate member 51. The leg portion 53a of the U-shaped bolt 53 is inserted from the side of the partition plate member 52, and is locked by the nut 55 at a portion protruding from the sliding plate member 51.

誘導連結具5において、仕切板材52とU字ボルト53との間には、横ワイヤ31の環状部32を支持する挿通開口S3が形成される。2つのU字ボルト53において形成される挿通開口S3は、短手方向Wに通じている。つまり、横ワイヤ31は、誘導ワイヤ2に対して交差する方向(短手方向W)において誘導連結具5により支持されている。横ワイヤ31の環状部32は、U字ボルト53の2つの脚部53aの間に支持されている。 In the guide connector 5, an insertion opening S3 for supporting the annular portion 32 of the horizontal wire 31 is formed between the partition plate member 52 and the U-shaped bolt 53. The insertion opening S3 formed in the two U-shaped bolts 53 leads to the lateral direction W. That is, the horizontal wire 31 is supported by the guide connector 5 in the direction intersecting the guide wire 2 (short direction W). The annular portion 32 of the lateral wire 31 is supported between the two legs 53a of the U-shaped bolt 53.

誘導連結具5を用いた落石防護装置1においても、誘導連結具4を用いた落石防護装置1と同様の効果を奏する。 The rock fall protection device 1 using the guide connector 5 also has the same effect as the rock fall protection device 1 using the guide connector 4.

以上、本発明の好適な実施の形態について説明したが、本発明は上記の実施の形態に限定されるものではなく、本発明の概念及び特許請求の範囲に含まれるあらゆる態様を含む。また、上述した課題及び効果の少なくとも一部を奏するように、各構成を適宜選択的に組み合わせてもよい。例えば、上記実施の形態における各構成要素の形状、材料、配置、サイズ等は、本発明の具体的使用態様によって適宜変更されうる。例えば、上記の実施の形態において落石防護装置1は、石Rを防護対象としていたが、例えば、傾斜面に生えている木等、傾斜面から落下したり滑り落ちたりすることが危険となる対象物であればあらゆるものに適用することができる。 Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and includes all aspects included in the concept of the present invention and the scope of claims. In addition, each configuration may be selectively combined as appropriate so as to achieve at least a part of the above-mentioned problems and effects. For example, the shape, material, arrangement, size, etc. of each component in the above embodiment can be appropriately changed depending on the specific usage mode of the present invention. For example, in the above embodiment, the rock fall protection device 1 has a stone R as a protection target, but for example, a tree growing on a slope surface or the like, which is a target in which it is dangerous to fall or slide down from the slope surface. It can be applied to anything as long as it is a thing.

また、上記の実施の形態において落石防護装置1は単独で使用していたが、本発明に係る落石防護装置1を、他の落石対策工と併用してもよい。これにより、落石による被害をより確実に抑えることができる。 Further, although the rock fall protection device 1 was used alone in the above embodiment, the rock fall protection device 1 according to the present invention may be used in combination with another rock fall countermeasure work. As a result, damage caused by falling rocks can be suppressed more reliably.

1 落石防護装置
2 誘導ワイヤ(ワイヤ)
3 ワイヤネット(被覆部材)
31 横ワイヤ(被覆ワイヤ)
4 誘導連結具(連結具)
41 摺動板材(移動部材)
41b 案内収容部(収容部)
42 仕切板材(仕切部材)
43 支持板材(支持部材)
43b 案内収容部(収容部)
5 誘導連結具(連結具)
51 摺動板材(移動部材)
51b 案内収容部(収容部)
52 仕切板材(仕切部材)
53 U字ボルト(支持部材)
1 Rockfall protection device 2 Induction wire (wire)
3 Wire net (covering member)
31 Horizontal wire (covered wire)
4 Induction connector (connector)
41 Sliding plate material (moving member)
41b Guidance accommodation (accommodation)
42 Partition plate material (partition member)
43 Support plate material (support member)
43b Guidance accommodation (accommodation)
5 Induction connector (connector)
51 Sliding plate material (moving member)
51b Guide accommodation (accommodation)
52 Partition plate material (partition member)
53 U-shaped bolt (support member)

Claims (6)

傾斜面における石を覆う落石防護装置であって、
前記石を挟んだ前記傾斜面の位置に設けられ傾斜方向に沿って延びる一対のワイヤと、
前記石を覆う被覆部材と、
前記被覆部材を前記ワイヤに対して前記傾斜方向において移動自在に連結する連結具と、
を備えることを特徴とする落石防護装置。
A rockfall protection device that covers stones on an inclined surface.
A pair of wires provided at the position of the inclined surface sandwiching the stone and extending along the inclined direction,
The covering member that covers the stone and
A connecting tool that movably connects the covering member to the wire in the inclined direction.
A rockfall protection device characterized by being equipped with.
前記連結具は、
前記ワイヤに沿って移動する移動部材と、
前記一対のワイヤ間を延びる前記被覆部材の被覆ワイヤを支持する支持部材と、
を有することを特徴とする請求項1に記載の落石防護装置。
The connector is
A moving member that moves along the wire,
A support member that supports the covering wire of the covering member extending between the pair of wires,
The rock fall protection device according to claim 1, wherein the device is characterized by having.
前記連結具は、前記移動部材と前記支持部材との間に前記ワイヤと前記被覆ワイヤとの接触を防止する仕切部材を有することを特徴とする請求項2に記載の落石防護装置。 The rock fall protection device according to claim 2, wherein the connecting tool has a partition member between the moving member and the supporting member to prevent contact between the wire and the covering wire. 前記移動部材は、前記仕切部材との間に前記ワイヤを収容する収容部を有することを特徴とする請求項3に記載の落石防護装置。 The rock fall protection device according to claim 3, wherein the moving member has an accommodating portion for accommodating the wire between the moving member and the partition member. 前記支持部材は、前記仕切部材との間に前記被覆ワイヤを収容する収容部を有することを特徴とする請求項3又は4に記載の落石防護装置。 The rock fall protection device according to claim 3 or 4, wherein the support member has an accommodating portion for accommodating the covering wire between the support member and the partition member. 傾斜面における石を覆う落石防護装置が有する、前記石を挟んだ前記傾斜面の位置に設けられ傾斜方向に沿って延びる一対のワイヤと、前記石を覆う被覆部材とを、該被覆部材が前記ワイヤに対して前記傾斜方向において移動自在であるように連結することを特徴とする連結具。 A pair of wires provided at the position of the inclined surface sandwiching the stone and extending along the inclined direction, and a covering member covering the stone, which the rock falling protection device for covering the stone on the inclined surface has, the covering member said. A connecting tool for connecting to a wire so as to be movable in the inclined direction.
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