JP3169889U - Steel fence step structure for preventing erosion of mountain trails - Google Patents

Steel fence step structure for preventing erosion of mountain trails Download PDF

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JP3169889U
JP3169889U JP2011002771U JP2011002771U JP3169889U JP 3169889 U JP3169889 U JP 3169889U JP 2011002771 U JP2011002771 U JP 2011002771U JP 2011002771 U JP2011002771 U JP 2011002771U JP 3169889 U JP3169889 U JP 3169889U
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fence
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slope
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哲 的場
哲 的場
村上 博信
博信 村上
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株式会社大分鉄網
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【課題】降雨時又はその後に発生する登山道に沿って流れる雨水による土砂等の流出を少なくし、洗堀を抑制制御し、地下への浸透水量も多くし、洗堀場所の植生を復帰させる堅牢で長寿命化を可能にする登山道浸食防止用鉄柵段構造を提供する。【解決手段】鉄柵段は、網目20〜100mmの格子を有し、その格子の差込み足用の下端と側端を崩れ斜面の底部及び又は側部に差し込んだ鉄格子300と、その鉄格子300の倒壊を防止する直径5〜20mmの鉄製の横鉄筋杭200と、縦型の鉄製杭100とにより構成し、この鉄柵段を崩れ斜面に所定間隔で複数段設置し、前記鉄柵段の前上部に木製の踏材を配置し、望ましくは前記鉄格子を斜面上向けて凸状のアーチ又は凹状のアーチもしくはハの字に形成する。【選択図】図1[PROBLEMS] To reduce the outflow of earth and sand due to rainwater flowing along a mountain trail that occurs during or after rain, control scouring, increase the amount of infiltrated water underground, and restore vegetation at the scouring site. Providing a steel fence step structure for preventing erosion of mountain trails that is robust and enables long life. An iron fence step has a grid with a mesh of 20 to 100 mm, the lower end and the side end for an insertion foot of the grid collapsed, and the iron grid 300 inserted into the bottom and / or side of the slope, and the collapse of the iron grid 300 This is composed of a steel horizontal reinforcing steel pile 200 having a diameter of 5 to 20 mm and a vertical iron pile 100, and the steel fence step is broken, and a plurality of steps are installed on the slope at predetermined intervals. Preferably, the iron grid is formed into a convex arch, a concave arch, or a square shape with the slope facing upward. [Selection] Figure 1

Description

本考案は、降雨時の流下水による登山道の洗堀進行防止と歩行を容易とし、且つ植生復帰に効果のある登山道浸食防止用鉄柵段構造に関するものである。  The present invention relates to an iron fence step structure for preventing erosion of a mountain trail caused by running water during rainfall and facilitating walking and preventing erosion of the mountain trail, and effective for vegetation restoration.
近年、山間地における交通網が整備された結果、自動車で山麓まで容易にアクセスできるようになり、比較的容易に登山道へ足を踏み入れることが可能となった。一般に登山道は、土や破砕物など水流により浸食され易い地盤で構成されている場合が多く、植物の根によって支持されていたが、増加する登山者により踏み固められて植物が死滅する事が多い。そのため、土が水流によって流され易くなり、次第に断面U字状や断面V字状に洗堀される現象が生じた。    In recent years, as a result of the development of a transportation network in mountainous areas, it has become possible to easily reach the foot of the mountain by car, and it has become possible to step on the mountain trail relatively easily. In general, mountain trails are often composed of soil that is easily eroded by water currents, such as soil and crushed materials, and they are supported by the roots of plants. Many. For this reason, the soil is easily washed away by the water flow, and a phenomenon occurs in which the soil is gradually washed into a U-shaped section or a V-shaped section.
即ち、登山道は登山者の通行により踏み固められているので、周囲の部分より一段低い地形となる。そのため、登山道は雨水などが流下する際の水路となり、特に勾配が急な登山道にあっては滝のように流れ、この流下水流により歩道面が次第に洗堀されて断面U字状、断面V字状にえぐられ深堀に繰り返される。その結果、岩肌が露出した凹凸の激しい或いは泥土が滞留した歩道面となり、益々歩行しにくい状態となる。
その結果、登山者は、歩きにくくなった荒れた登山道を避け、歩きやすい登山道に沿った植物の繁茂する部分を歩行することを繰り返す登山者が増加している。
以上の結果として、登山道の周囲の植物が踏み倒され、植物の根によって支持されていた土壌が洗堀され易くなって一層洗堀地が広がり、特に高山帯の登山道周辺は国や県指定の自然公園になっていることも多いが、貴重な植物が消滅するといった弊害が生じているおり、自然破壊の歯止めと修復並びに強固な登山道の確保が課題となっている。
In other words, since the mountain trail is stepped by the climber's traffic, the terrain is one step lower than the surrounding area. Therefore, the mountain trail becomes a waterway when rainwater flows down, especially in mountain trails with steep slopes, it flows like a waterfall, and the sidewalk surface is gradually scoured by this flowing water flow, and the section is U-shaped. Repeated in Fukahori in a V shape. As a result, it becomes a sidewalk surface where the rocks are exposed and the unevenness is intense or mud stays, and it becomes more difficult to walk.
As a result, the number of climbers who repeatedly walk on the part where the plant grows along the mountain path that is easy to walk is increasing, avoiding rough mountain paths that are difficult to walk.
As a result of the above, the plants around the mountain trail are stepped over, and the soil supported by the roots of the plant becomes easy to be scoured, further expanding the scouring area. Although there are many natural parks, there are problems such as the disappearance of precious plants, and the prevention and restoration of natural destruction and the securing of strong mountain trails are issues.
そこで、従来は、登山道に踏段を設置して、登山者の歩行を容易にする工夫がなれているが、その手段としては、(a)木製杭を数本地盤に埋め込み、この杭の地表より上の杭部に受け板を固定して土留めし、これを踏段として利用する方法や、(b)洗堀された裸地を土で覆い、その上を藁で作製した「こも」などで被覆して植生を復帰する方法、(c)岩石が露出した裸地の場合においては、それらの岩石を組み合わせて踏段を作るとともに、石で固めた排水路を確保して登山道の耐久性を向上させる方法、(d)市街地の道路脇の排水溝に溝蓋をするように洗掘されて溝になった登山道を鉄格子で覆い、その格子面を歩行面として歩きやすさを確保する方法、(e)コンクリートで登山道を固めて歩きやすさと浸食を防ぐ例などが採られてきた。  Therefore, conventionally, steps have been devised to make it easy for climbers to walk by installing steps on the mountain trail, but as a means, (a) several wooden piles are embedded in the ground, and the surface of this pile is A method of using a base plate fixed on the upper pile and holding it as a step, and (b) “Komo” made by covering the bare scoured ground with soil and then staking it (C) In the case of bare ground where rocks are exposed, make a step by combining these rocks and secure a drainage channel that is solidified with stone to ensure the durability of the mountain trail (D) The mountain road that has been scoured and covered with a groove on the drainage groove on the side of the road in an urban area is covered with an iron grid, and the grid surface is used as a walking surface to ensure ease of walking. Method, (e) example of solidifying the mountain trail with concrete to prevent walking and erosion To have.
しかし、上記(a)の場合は、降雨時の流下水や地崩れに対する抵抗性が小さいため、降雨が激しい場合のときには前記受け板の上を通って流下し、登山道が水路と化す。その結果、この流下水により土砂が洗堀され、登山道は一層深くU字型にえぐられることが多かった。また、踏段の受け板には開口部がないため、水が流れ込んだ際、踏段の下部へ一気に滝のように水が流れ、踏段の下部が洗堀されやすい。そして、踏段の杭周囲の地盤が緩み土砂が流出しやすくなるため、長時間たつと踏段そのものが崩壊することが頻発する。更に、杭や受け板は木製であることが多いため劣化が早く、耐久年数が短い。また朽ちた木材はそのまま放置されるので、かえって景観を損なう。  However, in the case of the above (a), since the resistance to flowing water and landslide during rain is small, when the rain is severe, it flows down on the backing plate, and the mountain trail becomes a waterway. As a result, the earth and sand were scoured by this sewage, and the mountain trail was often deeper and U-shaped. In addition, since there is no opening in the step receiving plate, when water flows, water flows like a waterfall to the lower part of the step at once, and the lower part of the step is easily scoured. And since the ground around the pile of the step is loosened and the soil is likely to flow out, the step itself frequently collapses after a long time. Furthermore, since piles and backing plates are often made of wood, they are quickly degraded and have a short durability. In addition, rotten wood is left as it is, so the landscape is damaged.
また上記(b)の場合、登山者が歩行し易い平地ないしは傾斜が極めて緩い歩道面の構築なため、雨水の流下に伴う歩道面の洗堀を防止するための配慮はなされていなく、容易に土が雨水で流失する。  In the case of (b) above, because the construction of a sidewalk surface that is easy for mountain climbers to walk or a slope that is extremely gentle, no consideration has been given to prevent scouring of the sidewalk surface due to the rainwater flow. The soil is washed away by rainwater.
(c)の岩石を組み合わせて排水路と歩行部を確保する方法は、重量物である岩石を扱う重機が使えるとは限らない山地では施工しにくい上に、歩道整備に適する岩石が施工箇所近くで入手できるとは限らず汎用性にとぼしい。また、石組が崩れた時には流水が石のまわりの土部分を石組がないときよりも激しく浸食する欠点を有する。  The method of securing the drainage channel and the walking section by combining the rocks of (c) is difficult to construct in the mountainous areas where heavy equipment that handles heavy rocks is not usable, and rocks suitable for sidewalk maintenance are near the construction site It is not necessarily available at, and is versatile. Also, when the stone set collapses, there is a drawback that the flowing water erodes the soil around the stone more violently than when there is no stone set.
(d)の鉄格子でU字状の登山道に蓋をなす方法は、歩行を容易にして登山者が歩きやすい道を求めて植生を破壊することの防止には繋がるが、蓋をした登山道に水流が集中して洗掘がすすんで行くこと自体の防止効果はもっていない。  The method of covering the U-shaped mountain trail with the iron lattice of (d) leads to the prevention of destroying the vegetation in search of a path that makes it easy for the climber to walk and makes it easy to walk. However, there is no effect to prevent the water flow from concentrating and scouring.
(e)のコンクリートで登山道を舗装する方法は、セメントや砂利、水などの大量で重量のある資材を登山道近くに運搬する必要があり、それが可能な登山道以外ではコストだけでなく施工自体が困難となり、汎用性に乏しい。  The method of paving a mountain trail with concrete in (e) requires that a large amount of heavy materials such as cement, gravel, and water be transported near the mountain trail. The construction itself becomes difficult and the versatility is poor.
本考案は、降雨時又はその後に発生する登山道に沿って流れる雨水を、鉄柵段の内部に速やかに浸透さると共に水のみをゆるやかに流下させて鉄柵段外に流出させて土砂等の流出を少なくし、鉄柵段上や段間の歩道部に水や泥土等を滞留させて洗堀を抑制制御し、地下への浸透水量も多くし、洗堀場所の植生を復帰させる堅牢で長寿命化を可能にする登山道浸食防止用鉄柵段構造を提供するものである。  The present invention allows rainwater that flows along a mountain trail that occurs during or after rainfall to quickly penetrate into the inside of an iron fence step and gently flow down only the water to make it flow out of the iron fence step to discharge sediment, etc. Reduces the amount of water and mud on the iron fence steps and the sidewalk between the steps to suppress and control the scouring, increase the amount of water penetrating into the basement, and restore the vegetation at the scouring site to a robust and long life It provides an iron fence step structure for preventing erosion of mountain trails.
本考案は前記の課題を満足するものでありその特徴は次の(1)〜(3)の通りである。
(1)、山道の崩れ斜面に設けて土石の流失浸食を防止する鉄柵段構造であって、鉄柵段を、網目20〜100mmの鉄線の格子を有しその格子の差込み足用の下端と側端を崩れ斜面の底部及び又は側部に差し込んだ鉄格子300と、その鉄格子300の倒壊を防止する直径5〜20mmの鉄製の横鉄筋杭200と、縦型の鉄製杭100とにより構成し、この鉄柵段を崩れ斜面に所定間隔で複数段設置したことを特徴とする山道浸食防止用鉄柵段構造。
(2)、前記鉄柵段の斜面山頂側の上部に木製の踏材400を配置したことを特徴とする前記(1)に記載の山道浸食防止用鉄柵段構造。
(3)、前記鉄柵段を歩行方向に見たとき、登山道の中央部は低くその両側を高くしたことを特徴とする前記(1)に記載の山道浸食防止用鉄柵段構造。
(4)、前記鉄柵段の前面を斜面上方に向けて凹状のアーチ又は凸状のアーチ、もしくは斜面上方にハの字形状に鉄柵を形成したことを特徴とする前記(1)又は(2)又は(3)に記載の山道浸食防止用鉄柵段構造。
(5)、前記鉄柵段において、網目20〜100mmの鉄格子300を構成する鉄線の直径を2〜6mm、差し込み足部の長さを25〜300mmとしたことを特徴とする前記(2)又は(3)に記載の山道浸食防止用鉄柵段構造。
The present invention satisfies the above-mentioned problems, and its features are as follows (1) to (3).
(1) An iron fence step structure that is provided on the slope of a mountain road to prevent debris from erosion and erosion, and the iron fence step has a grid of iron wires with a mesh of 20 to 100 mm, and the lower end and side for the insertion foot of the grid It is composed of an iron grid 300 whose edge is broken and inserted into the bottom and / or side of the slope, an iron horizontal reinforcing bar 200 having a diameter of 5 to 20 mm to prevent the iron grid 300 from collapsing, and a vertical iron pile 100. An iron fence step structure for preventing erosion of mountain roads, characterized in that the iron fence step is broken and a plurality of steps are installed at predetermined intervals on the slope.
(2) The iron fence step structure for preventing mountain road erosion according to (1) above, wherein a wooden tread 400 is disposed on the top of the top of the slope of the iron fence step.
(3) The iron fence step structure for preventing mountain road erosion according to (1) above, wherein when the iron fence step is viewed in the walking direction, the central portion of the mountain trail is low and both sides thereof are high.
(4) The above (1) or (2), wherein the iron fence step is formed with a concave arch or a convex arch with the front surface of the iron fence step facing upward on the slope, or an iron fence in the shape of a letter C above the slope. Or the iron fence step structure for mountain road erosion prevention as described in (3).
(5) In the iron fence step, the diameter of the iron wire constituting the iron lattice 300 having a mesh of 20 to 100 mm is 2 to 6 mm, and the length of the insertion foot is 25 to 300 mm. The iron fence step structure for preventing mountain road erosion described in 3).
本考案の登山道浸食防止用鉄柵段構造は、現場加工・施工が極めて簡易で登山道の地面に容易に差し込むことができる鉄線の鉄格子300と、鉄製の横鉄筋杭200と縦型の鉄製杭100を組み合わせた簡単なしかも堅牢な低材料・搬送コストの構造により、降雨時又はその後に発生する登山道に沿って流れる雨水を、鉄柵段の内部に速やかに浸透さると共に水のみをゆるやかに流下させて鉄柵段外に流出させて、土、砂、石、落ち葉、折れ枝等の流出を少なくし、鉄柵段上や段間の歩道部に水や泥土等を滞留させて洗堀を抑制すると共にその堆積を図り、地下への浸透水量も多くし、洗堀場所の植生を復帰させる堅牢で長寿命化を可能にする等の優れた効果を呈するものである。また前記鉄柵段の上部に木製の踏材を配置することにより、鉄柵段の角部を保護すると共に登山者の段踏み歩行を補助する。また、鉄柵段の中央部は低くその両側を高くすることで、出水時の流道を登山道中央に限定し流水が登山道の側面を洗掘することを防止する。更に鉄柵段の前面を斜面上方に向けて凸状のアーチもしくはハの字形状に形成することにより、鉄柵段を越流する流水の方向を歩道中央に向かわせて登山道側面の洗掘を軽減が図れる。また、鉄格子300のみによるアーチ形状の鉄柵段では特に急斜面道における段構造体としての強度の向上により横鉄筋杭200と縦型の鉄製杭100での補強を軽減または省略し設置工事費の軽減を図ると共に堆積鉄柵の倒壊を確実に防止するものである。  The iron fence step structure for preventing erosion of the mountain trail of the present invention is a steel wire grid 300, an iron horizontal rebar pile 200 and a vertical iron pile that can be easily inserted into the ground of a mountain trail, with extremely simple on-site processing and construction. The simple and robust low material / transport cost structure combined with 100 allows rainwater flowing along the mountain trail that occurs during or after rainfall to permeate the inside of the iron fence step quickly and gently flow only the water. And let it flow out of the iron fence steps to reduce outflow of soil, sand, stones, fallen leaves, broken branches, etc., and suppress scouring by retaining water, mud, etc. on the iron fence steps and the sidewalks between the steps. At the same time, it accumulates, increases the amount of water penetrating into the basement, and exhibits excellent effects such as robustness that enables vegetation in the scouring area to be restored and a longer life. In addition, by arranging a wooden tread on the top of the iron fence step, the corner of the iron fence step is protected and the climber's stepping walk is assisted. In addition, by lowering the central part of the iron fence step and raising both sides, the flow path at the time of flooding is limited to the center of the mountain path, preventing the water from scouring the side of the mountain path. Furthermore, by forming a convex arch or C-shape with the front side of the iron fence step upward, the direction of the water flowing over the iron fence step is directed toward the center of the sidewalk, reducing scouring on the side of the mountain trail Can be planned. In addition, in the arch-shaped iron fence step using only the iron grid 300, the reinforcement of the horizontal reinforcing bar pile 200 and the vertical iron pile 100 is reduced or omitted by improving the strength as a step structure particularly on a steep slope road, thereby reducing the installation work cost. It is intended to prevent the collapse of the piled iron fence.
本考案の実施例1を示す斜視説明図である。It is a perspective explanatory view showing Example 1 of the present invention. 本考案の実施例2を示す斜視説明図である。It is a perspective explanatory view showing Example 2 of the present invention. 本考案の実施例3を示す斜視説明図である。It is a perspective explanatory view showing Example 3 of the present invention. 図3の側面説明図である。It is side surface explanatory drawing of FIG. 本考案の実施例4を示す説明図である。It is explanatory drawing which shows Example 4 of this invention. 本考案の鉄柵段の主構成品である鉄製の鉄製杭100、横鉄筋杭200、鉄格子300の仕様説明図である。It is specification explanatory drawing of the steel iron pile 100, the horizontal reinforcement pile 200, and the iron lattice 300 which are the main components of the iron fence step of this invention.
本考案を実施するための形態を次の実施例と共に詳細に説明する。  The form for implementing this invention is demonstrated in detail with the following Example.
本考案の実施例1を図1と共に説明する。
実施例1は登山道浸食防止用鉄柵段構造の基本構形でありこのバリエーションを後述の実施例2〜実施例4に紹介する。
図1に示す登山道浸食防止用鉄柵段構造の基本形は、登山道の崩れ斜面に段設して、土石の流失浸食を防止する鉄柵段構造であり、図6に示す鉄製杭100、横鉄筋杭200、鉄格子300とを主構成部とする。
A first embodiment of the present invention will be described with reference to FIG.
Example 1 is a basic structure of an iron fence step structure for preventing erosion of mountain trails, and this variation is introduced in Examples 2 to 4 described later.
The basic form of the iron fence step structure for preventing the erosion of the mountain trail shown in FIG. 1 is an iron fence step structure for preventing the erosion and erosion of debris by stepping on the collapsed slope of the mountain trail. The steel pile 100 and the horizontal rebar shown in FIG. The pile 200 and the iron lattice 300 are the main components.
前記鉄製杭100は、段柵の前面部を構築する補強主部であり、直径5〜20mm、長さ250〜1500mmの鉄製で、頭部を歩行者の安全を図るためと横鉄筋杭200を支持するために円状に曲げ、下端は木製杭のように尖らせるなどの加工は不必要で単なる切り落とし面とする。この杭を崩れ斜面の底部に1〜3本打ち込み、鉄柵にかかる土圧および登山者の踏み圧を支持する基礎杭となし、鉄格子300の前面(谷側)に設置して鉄柵段を支持してその倒壊を防止する。
前記横鉄筋杭200は、段柵の上部を構築する補強材であり、直径5〜13mm、長さ1000〜2000mmの鉄製の棒で、一端を浸食された登山道の崩れ側部に打ち込むと共に歩道側の他端は鉄杭100の頭部の円状部に通して鉄柵の上面を構成する。崩れ側部の両側に同時に打ち込むことが困難なので、左右別々に設置し歩道側中央部分の高さを側部より低くする。
前記鉄格子300は、正面から見て逆π形・上開き形状の踏み段の前面部を覆う網目20〜100mm、格子鉄線の直径を2〜6mm、下部と両側の差し込み足部の長さを25〜300mmとし、上部の縦鉄線は下方に曲げて歩行者の安全を確保する鉄段柵からの放水網及び土石留め網である。本構造の柵段においては、斜面上方から流れ落ちる土砂や落木、落葉などの流下物の圧力に十分耐えると共に、登山者が横鉄筋杭200の上を踏んで歩いても変形や破損しないだけの強度を有するものである。
鉄製杭100、横鉄筋杭200、鉄格子300の構造、使用鉄材の太さや長さなどは、傾斜角度、浸食深さ、浸食幅などの登山道の形状に対応して、手動工具程度しか利用できない山地においても容易に加工を可能にするものである。
なお、登山者が利用しない登山道、登山者の利用を禁止する迂回路のように登山者が鉄柵段を踏むことが無い場合においては、鉄製杭100または横鉄筋杭200を削減することが可能である。
The iron pile 100 is a reinforcing main part that constructs the front part of the corrugated fence, and is made of iron having a diameter of 5 to 20 mm and a length of 250 to 1500 mm. Bending in a circular shape to support it, and processing such as sharpening the lower end like a wooden pile is unnecessary, and it is a simple cut surface. This pile is collapsed and driven into the bottom of the slope by 1 to 3 foundation piles that support the earth pressure applied to the iron fence and the climbing pressure of the climber, and are installed on the front (valley side) of the iron grid 300 to support the iron fence steps. To prevent its collapse.
The horizontal reinforcing bar pile 200 is a reinforcing material for constructing the upper part of the corrugated fence, and is a steel rod having a diameter of 5 to 13 mm and a length of 1000 to 2000 mm. The other end of the side is passed through the circular part of the head of the iron pile 100 to constitute the upper surface of the iron fence. Since it is difficult to drive on both sides of the collapsed side at the same time, install them separately on the left and right sides so that the height of the central part of the sidewalk is lower than the side.
The iron lattice 300 has a mesh of 20 to 100 mm covering the front part of the step of the reverse π shape and the top opening shape when viewed from the front, the diameter of the lattice iron wire is 2 to 6 mm, and the length of the insertion legs on the lower and both sides is 25. Up to 300 mm, and the upper vertical iron wire is a drainage net and a debris retaining net from an iron fence that bends downward to ensure the safety of pedestrians. The fence with this structure has enough strength to withstand the pressure of falling objects such as earth and sand, fallen trees, and fallen leaves that fall from above the slope, and is strong enough to prevent climbers from stepping on the rebar pile 200 and walking. It is what has.
The structure of the steel pile 100, the horizontal reinforcing bar pile 200, the iron lattice 300, the thickness and length of the iron material used, etc. can be used only for manual tools corresponding to the shape of the mountain trail such as the inclination angle, erosion depth, erosion width, etc. It can be easily processed even in mountainous areas.
In addition, when the mountain climber does not step on the iron fence step like a mountain path not used by the mountain climber and a detour that prohibits the use of the mountain climber, the iron pile 100 or the horizontal reinforcing bar pile 200 can be reduced. It is.
実施例2を図2斜視説明図に示す。実施例2は実施例1の登山道浸食防止用鉄柵段構造において、前記段柵の上部の山頂側に木製の踏材400を配置した柵段構造である。
木製の踏材400の上面は横鉄筋杭200や鉄格子300の中央部分より高く、側面の鉄格子の最高点よりは低くすることで、登山者の通行の円滑化と出水時に柵段を越して流れる雨水による崩れ斜面側面の浸食防止を図る。
踏材400は、太さ1〜4mmのなまし鉄線などを用いて鉄製杭100および横鉄筋杭200に固定するものであるが、踏材下部が登山道の底部に接しない場合には、図3の側面図に示すように適当な高さで入手しやすい落木や落石などを敷き込んでさらなる安定を図るが、鉄杭を踏材の下に打ち込んでその頭部の高さを利用するのがもっとも短時間で簡便に高さ調整する方法である。なお、棚段の設置直後で、各柵段の土、砂、木片、落葉の堆積部が空であり、隣の踏材との距離が離れているなどの場合、この堆積部に落石、落木、枯れ枝、余剰の踏材などを入れて、登山者の歩行の利便性向上をはかるのも推奨される方法である。
Example 2 is shown in the perspective view of FIG. The second embodiment is a fence step structure in which a wooden tread 400 is arranged on the mountain top side of the upper part of the step fence in the iron fence step structure for preventing erosion of mountain trails of the first embodiment.
The top surface of the wooden tread 400 is higher than the central part of the horizontal rebar pile 200 and the iron lattice 300, and lower than the highest point of the side iron lattice so that the mountain climber can flow smoothly and flow over the fence steps when the water flows. Prevent erosion on the sides of slopes that have collapsed due to rainwater.
The tread 400 is fixed to the iron pile 100 and the horizontal reinforcing bar pile 200 using an annealed iron wire having a thickness of 1 to 4 mm, but when the lower part of the tread does not contact the bottom of the mountain trail, As shown in the side view of Fig. 3, the fallen trees and fallen rocks that are easily available at the appropriate height are laid down for further stability, but the height of the head is used by driving iron piles under the treads. Is a method of adjusting the height easily in the shortest time. In addition, immediately after the installation of the shelf, the soil, sand, wood pieces, and fallen leaf deposits on each fence step are empty, and if there is a distance from the next tread, the fallen rocks and fallen trees It is also a recommended method to improve the convenience of walking for climbers by adding dead branches and surplus treads.
実施例3を図4の斜視説明図に示す。
実施例3は、実施例1の登山道浸食防止用鉄柵段構造において、前記段柵を斜面上方(山頂側)に向けて凸状のアーチに形成した柵段構造である。
平面状の鉄格子300を斜面上方(山頂側)に向けて凸または凹のアーチ状に形成することで、平板を円筒状にすると軸方向の剛性が高まるように上下方向の剛性がたかまる。つまり、登山者の踏み圧に対して鉄格子300が座屈する可能性を減ずる。
特に、斜面上方に凸状のアーチに形成すると下記のような利点が得られるのでさらに大きな効果がえられる。
斜面上方から流れ落ち鉄格子300に堆積する土砂類の圧力を、実施例1のように平面でうけて補強用の鉄杭で受け止めるのでなく、アーチ状の構造の鉄格子にすることで堆積物、流下物の圧力を登山道の側面に差込んだ横の格子に逃がし、補強用の鉄製杭100や横鉄筋杭200を使用することがなく堆積物による倒壊を防ぐことができる。また、鉄格子300の幅が登山道より短い場合でも、複数枚の鉄格子300の端面をお互いに絡めて全体としてアーチ状にすれば、格子同士には圧縮力しかかからないために、溶接接合等をしなくても大きい力に耐えることができるのである。
本形状は溶接構造の鉄格子300の平面を。面方向に曲げるので曲げ加工は人力で容易に可能である。
また、大量の雨水が斜めにおかれた丸太などの直線上の障害物の上を越して流れるとき、その丸太の軸方向と直角方向に流路を変える性質があるため、本実施例のアーチ状の形状で堆積が進んで鉄格子300の隙間が埋められて大量の水が鉄柵段の上面を流れ落ちると、流水は登山道中央に集まるように流れるので、登山道側面の洗掘を防止する効果がさらに高まる利点を有する。
なお、このアーチ形状は斜面上方(山頂側)に向けて凹状にしても、流水の制御効果や土圧に対する効果はないが、円筒形状になることで剛性が高まるので、同じ直径の鉄線を用いる平面状鉄格子より強度が増し、登山者の踏み圧にたいする抵抗力は増加する。つまり、鉄杭や横鉄筋の太さを実施例1より減らすことなどの利点は依然持っている。
Example 3 is shown in the perspective view of FIG.
Example 3 is a fence step structure in which the step fence is formed as a convex arch toward the upper side of the slope (on the mountain top side) in the iron fence step structure for preventing erosion of mountain trails of Example 1.
By forming the flat iron lattice 300 in a convex or concave arch shape toward the upper side of the slope (at the top of the mountain), when the flat plate is cylindrical, the rigidity in the vertical direction is increased so that the rigidity in the axial direction is increased. That is, the possibility that the iron lattice 300 buckles with respect to the stepping pressure of the climber is reduced.
In particular, if a convex arch is formed above the slope, the following advantages can be obtained, so that a greater effect can be obtained.
Instead of receiving the pressure of earth and sand deposited on the iron grid 300 from the upper side of the slope and receiving it with a steel pile for reinforcement as in the first embodiment, it is formed into an iron grid with an arch-like structure, so Can be released to the horizontal grid inserted into the side of the mountain path, and the steel pile 100 and the horizontal reinforcing bar pile 200 for reinforcement can be used, and the collapse due to the deposit can be prevented. Even when the width of the iron lattice 300 is shorter than the mountain trail, if the end surfaces of the plurality of iron lattices 300 are entangled with each other to form an arch shape as a whole, the lattices only have a compressive force, so welding joints are performed. Even without it, it can withstand a large force.
This shape is the plane of the iron lattice 300 of the welded structure. Since it is bent in the surface direction, bending can be easily performed manually.
In addition, when a large amount of rainwater flows over a straight obstacle such as a log placed diagonally, the flow path is changed in a direction perpendicular to the axial direction of the log. When the accumulation progresses and the gap of the iron lattice 300 is filled and a large amount of water flows down the upper surface of the iron fence step, the flowing water flows so as to collect in the center of the mountain trail, so the effect of preventing scouring on the side of the mountain trail Has the further advantage.
In addition, even if this arch shape is concave toward the upper part of the slope (the summit side), there is no effect on the control of flowing water and no effect on earth pressure, but the rigidity increases because of the cylindrical shape, so use iron wires of the same diameter The strength is higher than that of a flat iron lattice, and the resistance to climbing pressure of climbers is increased. That is, there are still advantages such as reducing the thickness of steel piles and horizontal reinforcing bars compared to the first embodiment.
実施例4を図5の斜視説明図に示す。
実施例4は実施例1の登山道浸食防止用鉄柵段構造において、鉄格子300を山頂側を頂点とするハの字形状に形成した柵段構造である。
この構造により実施例3の山頂側をアーチ形状を同様に、鉄柵段を越流する流水の方向を歩道中央に向かわせて登山道側面の洗掘を防止する機能を持たせることができる。
本構造の応用としては、実施例1と同様に登山道中央部を横一線とし、端部分だけを下流側で且つ端側を高めにすることで端部の洗掘をさらに効果的に防止することができる。
だたし、本構造は実施例3のアーチ構造より鉄格子300の剛性が弱いので鉄製杭100での補強が必要な場合が生じる。
なお、実際の登山道での実験結果によれば、登山者の通行を禁止した迂回路においては、高さ300mm程度までの堆積物の土圧には十分耐えることが確かめられている。
Example 4 is shown in the perspective view of FIG.
[Embodiment 4] Embodiment 4 is a fence step structure in which the iron lattice 300 is formed in a square shape with the summit side at the top in the iron fence step structure for preventing erosion of mountain trails of Embodiment 1.
With this structure, the mountain top side of the third embodiment can be provided with the function of preventing the scouring of the side of the mountain trail by causing the direction of running water to flow over the iron fence steps to the center of the sidewalk in the same manner.
As an application of this structure, as in the first embodiment, the central part of the mountain trail is in a horizontal line, and only the end part is on the downstream side and the end side is raised to prevent scouring of the end part more effectively. be able to.
However, in this structure, since the rigidity of the iron lattice 300 is weaker than that of the arch structure of the third embodiment, there is a case where reinforcement with the iron pile 100 is necessary.
In addition, according to the results of experiments on actual mountain trails, it has been confirmed that the detour that prohibits the passage of climbers can withstand the earth pressure of sediments up to a height of about 300 mm.
本考案は、材料、運搬、現地加工組立施工、植生・観光環境維持、耐久性、コスト等に有利な前記の優れた作用効果を呈するものであり、治山事業、登山事業、国立公園環境維持事業等々に貢献すること多大なものがあり、この種産業に大きく寄与するものである。  The present invention exhibits the above-mentioned excellent effects that are advantageous in terms of materials, transportation, local processing assembly and construction, vegetation / tourism environment maintenance, durability, cost, etc., mountain conservation business, mountain climbing business, national park environmental maintenance business There are a lot of things to contribute to, and so on, which greatly contribute to this kind of industry.
100:鉄製杭
200:横鉄筋杭
300:鉄格子
100: Iron pile 200: Horizontal reinforcing bar 300: Iron lattice

Claims (4)

  1. 山道の崩れ斜面に設けて土石の流失浸食を防止する鉄柵段構造であって、鉄柵段は、網目20〜100mmの鉄線の格子を有しその格子の差込み足用の下端と側端を崩れ斜面の底部及び又は側部に差し込んだ鉄格子300と、その鉄格子300の倒壊を防止する直径5〜20mmの鉄製の横鉄筋杭200と、縦型の鉄製杭100により構成し、この鉄柵段を崩れ斜面に所定間隔で複数段設置したことを特徴とする山道浸食防止用鉄柵段構造。  It is an iron fence step structure that is provided on a collapsed slope of mountain road to prevent runoff and erosion of debris, and the iron fence step has a grid of iron wire with a mesh of 20 to 100 mm, and the lower end and side end for the insertion foot of the grid collapse It is composed of an iron grid 300 inserted into the bottom and / or side of the steel, a horizontal steel reinforcing steel pile 200 having a diameter of 5 to 20 mm that prevents the iron grid 300 from collapsing, and a vertical iron pile 100. An iron fence step structure for preventing erosion of mountain roads, characterized in that a plurality of steps are installed at predetermined intervals.
  2. 前記鉄柵段は、斜面山頂側の上部に木製の踏材400を配置したことを特徴とする請求項1に記載の山道浸食防止用鉄柵段構造。  2. The iron fence step structure for preventing erosion of mountain roads according to claim 1, wherein the iron fence step has a wooden tread 400 disposed at an upper part on a slope mountain top side.
  3. 前記鉄柵段は、歩行方向に見たとき、登山道の中央部は低くその両側を高くした請求項1又は請求項2に記載の山道浸食防止用鉄柵段構造。  The iron fence step structure for preventing mountain road erosion according to claim 1 or 2, wherein when viewed in the walking direction, the iron fence step has a lower central part of the mountain trail and a higher side.
  4. 前記鉄柵段は、前面を斜面上方に向けて凹状のアーチまたは凸状のアーチ、もしくは斜面上方にハの字形状にした鉄格子300により構成したことを特徴とする請求項1又は請求項2に記載の山道浸食防止用鉄柵段構造。  The said iron fence step is comprised by the iron grid 300 which made the front side facing the upper surface of the slope into the concave arch or the convex arch, or the C-shape above the slope. Iron fence step structure for preventing mountain road erosion.
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