JP3807801B2 - Slope greening method - Google Patents

Slope greening method Download PDF

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Publication number
JP3807801B2
JP3807801B2 JP34058796A JP34058796A JP3807801B2 JP 3807801 B2 JP3807801 B2 JP 3807801B2 JP 34058796 A JP34058796 A JP 34058796A JP 34058796 A JP34058796 A JP 34058796A JP 3807801 B2 JP3807801 B2 JP 3807801B2
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Japan
Prior art keywords
frame
bag
slope
sheet
greening
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Expired - Lifetime
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JP34058796A
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JPH10168888A (en
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均 早水
和哉 岸野
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株式会社早水組
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【0001】
【発明の属する技術分野】
本発明は、法面の緑化工法に関するものである。
【0002】
【従来の技術】
近年は、自然環境の保護の観点からコンクリート法枠の枠間を緑化することが要求され、実施されている。
その工法として法面に法枠aを構築し、その枠a間に露出した地山面に緑化用の袋bを設置する方法が採用されている。
この方法は、あらかじめ土、肥料、種子をつめた袋体bを法枠aの間に投入する方法(図4)、あるいは枠a間に未注入のシート状の袋bを設置した後、袋b内に土、肥料、種子などの緑化材cを注入する方法(図5)である。すると発芽した芽や根は袋bの目を押し広げて外部に向けて発育して安定した緑化が可能となる。
【0003】
【本発明が解決しようとする課題】
しかし前記したような従来の法面の緑化工法にあっては、次のような問題点がある。
<イ>各枠a間に設置した袋体bは法枠aとは独立したものである。そのために袋b内の種子が発芽して根が着く以前に、法枠aと袋bとの間から雨水が浸透して徐々に地山を浸食してしまう場合がある。
河川では地山の浸食を防止するために、事前に吸い出しマットを敷設する作業が必要となる。
<ロ>法枠aと袋体bは分離しているから、寒冷時期に地山の霜柱が凍結溶解を繰り返すと、法枠aと袋体bが独自の昇降を繰り返し、袋体bだけが法面から転落するような事故が発生する。
<ハ>袋体bの移動を防止するために、1袋ごとに多数本のピンdを打ち込んで地山に縫い付けるような作業、あるいは法枠に固定する作業が必要となる。
そうした多量のピンdの打ち込み作業が作業員の多大な負担となっている。
<ニ>法枠aの施工と、袋体bの設置とは同時に進行することが困難であるために、工期が長くなりやすい。
【0004】
本発明は上記したような従来の問題を解決するためになされたもので、迅速な施工が可能であり、かつ根が着く以前から安定して地山を押さえることができる法面の緑化工法を提供することを目的とする。
【0005】
【課題を解決するための手段】
上記のような目的を達成するために、本発明の法面の緑化工法は、法面に膨脹させる以前のシート状の袋体群を敷設し、敷設したシート状の袋体群の上面にコンクリート製の法枠を形成し、その後に、法枠の枠間に露出した袋体内に、緑化用の材料を注入して行う、法面の緑化工法を特徴としたものである。
【0006】
【本発明の実施の態様】
以下本発明の法面の緑化工法の実施例について説明する。
【0007】
<イ>シート状袋体。
本発明の工法では、広い面積のシート状の袋体1を使用する。
これは2枚のシートの一部を線状に溶着、あるいは縫い合わせて多数の区域に分割したものである。
この線状の結合部11によって区画された各区域が袋体12を構成することになり、各袋体12ごとに注入口を設ける。
このシート状袋体1は、法枠の数十区画分の広い面積のものを使用する。
このシート状袋体1は目の荒い材料で構成する。この目の寸法は、水の浸入は許容するが、土粒子の流出は不可能な程度のものを採用する。
結合部11の位置が、後述するコンクリートブロック2などの法枠の位置と一致することになる。
【0008】
<ロ>シート状袋体1の敷設。
上記した構成のシート状袋体1を法面に敷設する。
その場合にシート状袋体1は、膨脹させる以前の平面状態のまま敷設する。
そのために、例えば筒状に巻いてあるシート状袋体1を、法面の上端から徐々に撒き出して法面上に展開する。
シート状袋体1は広い面積を有するが、その上面には後述するように法枠を配置するから、特に従来のように多数本のピンで固定する必要はなく作業はきわめて容易である。
なお袋体1は、法枠のコンクリートブロック2間を複数に分割して独立した多数の袋部分を形成したタイプ、あるいは分割していないタイプのいずれでも使用することができる。
【0009】
<ハ>法枠の構成。
法面に敷設した。膨脹させる以前のシート状の袋体12の上面に、全面にわたって法枠を構成する。
法枠として、例えばコンクリ−トブロック2を設置する。
このコンクリ−トブロック2は長い柱状の部材であり、組み合わせることによって法枠が形成できる構造のものである。
法枠の構築方法として他の公知の方法も採用できる。
例えば金網型枠の間にコンクリートやモルタルを吹き付けて法枠を構成する方法である。その場合には金網などを平行に立てた型枠をシート状袋体1の上面に配置し、その型枠間にコンクリート類を吹き付けて構成する。
あるいは、シート状袋体1の上面に法枠用の型枠を組み立て、その型枠内部にコンクリートを打設して法枠を構成することもできる。
【0010】
<ニ>緑化材の注入。
法枠の枠間には、シート状袋体1の袋体12部分が露出している。各袋体部分には注入口を設けてあるから、この注入口から緑化用の材料3を注入する。
緑化材3は、種子、肥料、土などを一体化させた材料であり、ポンプの圧力によって法面の下の道路などから圧送することが可能である。
法枠のコンクリートブロック2間を複数に分割して独立した多数の袋部分を形成したタイプの場合には図2のような形状を呈し、分割していないタイプの場合には図3に示すような形状を呈する。
すべての法枠間に露出している袋体12に緑化材3の注入を行って緑化の準備は完了する。
【0011】
【本発明の効果】
本発明の法面の緑化工法は以上説明したようになるから次のような効果を得ることができる。
<イ>シート状袋体1によって地山の全面が被覆されており、従来のように分割されていない。したがって法枠と袋体12との間隔から雨水が浸入して法面を徐々に崩壊するような作用が発生しない。
<ロ>特に河川の護岸に使用した場合には、従来のように袋体が分割されていると法枠と袋体との間隔から河川の水が繰り返し出入りし、その結果法面の土砂を吸い出して崩壊させてしまう。そのために従来は事前に吸い出しマットを敷設するという作業が必要であった。
しかし本発明の方法では、法面の全面が被覆されている。したがって河川の水位の上下によっても水が内部に浸入して地山の土砂を吸引するような現象は発生しない。
<ハ>植生の根が強固に地山に食い込む以前には、寒冷時期に凍上作用によって法枠が上下動する可能性がある。そのために法枠と緑化用の袋体が分離している従来の構造では法枠と袋体が別々に上下動して縁が切れてしまい、袋体が法面を転落するような現象が発生している。
しかし本発明の方法では、全面がシートで被覆してあり、全体が一体で上下動するから袋体12だけが分離して転落するような事故は発生しない。
<ニ>袋体が法枠と独立している構造では各袋体ごとを数本のアンカーによって固定するという繁雑な作業を必要とした。
しかし本発明の方法では、全面が一体の連続したシート状袋体1によって被覆してあるから、多数本のアンカーを必要とせず法枠の重量で押さえることができる。したがって従来のような多数本のアンカー打込みという作業、法枠に袋体を固定する作業を省略することができ、工期を大幅に短縮することができる。
<ホ>従来の工法では全面の法枠が完全に完成した後に、あらかじめ土、肥料、種子を詰めた袋を枠内に投入して配置する作業、あるいは袋体を搬入して設置し、その後に注入作業を行う工程を採用していた。したがって複数の作業を重複して進めることはできなかった。
しかし本発明の方法であれば、最初に全面を被覆するシート状袋体1を敷設してしまうから、従来のような袋体の搬入、設置作業が不要であり、1区画の法枠が完成するごとに緑化材3を注入することが可能である。
このような重複作業を行うことができるので、工期を大幅に短縮することができる。
【図面の簡単な説明】
【図1】本発明の法面の緑化工法の実施例の説明図。
【図2】その断面図。
【図3】本発明の他の実施例の説明図。
【図4】従来の施工方法の一例の説明図。
【図5】従来の施工状態の断面図。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slope greening method.
[0002]
[Prior art]
In recent years, greening between concrete frames has been required and implemented from the viewpoint of protecting the natural environment.
As the construction method, a method is adopted in which a frame a is constructed on the slope and a greening bag b is installed on the ground surface exposed between the frames a.
In this method, a bag body b previously filled with soil, fertilizer and seeds is put between the frame a (FIG. 4), or an uninjected sheet bag b is installed between the frames a It is a method (FIG. 5) which inject | pours greening materials c, such as soil, a fertilizer, and a seed, into b. Then, the germinated buds and roots spread the eyes of the bag b and grow toward the outside to enable stable greening.
[0003]
[Problems to be solved by the present invention]
However, the conventional slope planting method as described above has the following problems.
<A> The bag body b installed between the frames a is independent of the legal frame a. Therefore, before the seeds in the bag b germinate and the roots arrive, rainwater may infiltrate between the frame a and the bag b and gradually erode the ground.
In order to prevent erosion of natural ground in rivers, it is necessary to lay a suction mat in advance.
<B> Since the frame a and the bag b are separated, if the frost pillar of the natural mountain repeats freezing and thawing in the cold season, the frame a and the bag b repeat their own raising and lowering, and only the bag b is An accident that falls from the slope occurs.
<C> In order to prevent the movement of the bag body b, an operation of driving a large number of pins d for each bag and sewing it to a natural mountain, or an operation of fixing to a natural frame is required.
Such a large amount of driving of the pin d is a great burden on the worker.
<D> Since it is difficult for the construction of the method frame a and the installation of the bag body b to proceed simultaneously, the construction period tends to be long.
[0004]
The present invention was made in order to solve the conventional problems as described above, and is a method of revegetation with a slope that can be quickly constructed and can stably hold the ground before the roots arrive. The purpose is to provide.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the slope revegetation method of the present invention lays a sheet-like bag group before inflating on the slope, and puts concrete on the upper surface of the laid sheet-like bag group. It is characterized by a slope planting method in which a manufacturing method frame is formed and then a greening material is injected into the bag exposed between the frame of the method frame.
[0006]
[Embodiments of the present invention]
Examples of the greening method according to the present invention will be described below.
[0007]
<I> Sheet-shaped bag.
In the construction method of the present invention, a sheet-shaped bag 1 having a large area is used.
In this method, a part of two sheets is linearly welded or sewn together and divided into a number of areas.
Each area defined by the linear coupling portion 11 constitutes a bag body 12, and an inlet is provided for each bag body 12.
The sheet-like bag body 1 has a wide area corresponding to several tens of sections of the legal frame.
The sheet-like bag 1 is made of a material having a rough eye. The size of the eye should be such that water can enter but soil particles cannot flow out.
The position of the connecting portion 11 coincides with the position of a normal frame such as a concrete block 2 described later.
[0008]
<B> Laying the sheet-like bag body 1.
The sheet bag 1 having the above-described configuration is laid on the slope.
In that case, the sheet-like bag 1 is laid in the flat state before inflating.
For this purpose, for example, the sheet-like bag body 1 wound in a cylindrical shape is gradually rolled out from the upper end of the slope and spread on the slope.
Although the sheet-like bag body 1 has a large area, since a frame is arranged on the upper surface thereof as described later, it is not particularly necessary to fix with a large number of pins as in the conventional case, and the operation is extremely easy.
In addition, the bag body 1 can be used either of a type in which the concrete blocks 2 of the frame of the frame are divided into a plurality of pieces to form a large number of independent bag portions, or a type that is not divided.
[0009]
<C> Structure of the legal framework.
Laying on the slope. A legal frame is formed on the entire upper surface of the sheet-like bag body 12 before being inflated.
For example, a concrete block 2 is installed as a legal frame.
The concrete block 2 is a long columnar member, and has a structure in which a legal frame can be formed by combining them.
Other known methods can also be adopted as a method for constructing a legal framework.
For example, there is a method in which concrete or mortar is sprayed between wire mesh molds to form a legal frame. In that case, a mold frame with a metal mesh or the like standing in parallel is arranged on the upper surface of the sheet-like bag body 1, and concrete is sprayed between the mold frames.
Alternatively, a frame for a frame can be assembled on the upper surface of the sheet-like bag 1 and concrete can be placed inside the frame to form a frame.
[0010]
<D> Injection of greening materials.
Between the frames of the legal frame, the bag body 12 portion of the sheet-like bag body 1 is exposed. Since each bag portion is provided with an inlet, the greening material 3 is injected from this inlet.
The greening material 3 is a material in which seeds, fertilizer, soil, and the like are integrated, and can be pumped from a road or the like below the slope by the pressure of the pump.
In the case of a type in which a large number of independent bag parts are formed by dividing a plurality of concrete blocks 2 of the frame, a shape as shown in FIG. 2 is shown, and in a case of a type without division, as shown in FIG. Presents a unique shape.
The greening material 3 is injected into the bag 12 exposed between all the legal frames to complete the preparation for greening.
[0011]
[Effect of the present invention]
Since the greening method of the slope of the present invention is as described above, the following effects can be obtained.
<I> The whole surface of the natural ground is covered with the sheet-like bag body 1 and is not divided as in the prior art. Therefore, an action that rainwater enters from the interval between the frame and the bag body 12 and the slope is gradually collapsed does not occur.
<Ro> Especially when used for river revetment, if the bag is divided as in the past, river water repeatedly enters and exits from the gap between the frame and the bag, and as a result, the soil on the slope is removed. It sucks out and collapses. For this reason, conventionally, it has been necessary to lay a suction mat in advance.
However, in the method of the present invention, the entire slope is covered. Therefore, even if the water level of the river rises or falls, the phenomenon that water infiltrates inside and sucks earth and sand from the natural mountain does not occur.
<C> Before the roots of the vegetation firmly bite into the ground, the frame may move up and down due to frost heaving during the cold season. For this reason, in the conventional structure in which the frame and the bag for greening are separated, the frame and the bag move up and down separately, the edges are cut, and the bag falls down the slope. is doing.
However, in the method of the present invention, the entire surface is covered with a sheet, and the whole moves up and down as a whole, so that an accident in which only the bag 12 is separated and falls does not occur.
<D> In the structure in which the bag body is independent of the legal frame, a complicated work of fixing each bag body with several anchors is required.
However, in the method of the present invention, since the entire surface is covered with the continuous continuous sheet-like bag body 1, it is possible to hold down with the weight of the method frame without requiring a large number of anchors. Therefore, it is possible to omit the conventional work of driving a plurality of anchors and the work of fixing the bag body to the frame, and the construction period can be greatly shortened.
<E> In the conventional construction method, after the entire frame is completely completed, a bag filled with soil, fertilizer and seeds is placed in the frame in advance, or the bag is loaded and installed. The process of performing the injection work was adopted. Therefore, a plurality of operations could not be performed in duplicate.
However, according to the method of the present invention, since the sheet-like bag body 1 that covers the entire surface is first laid, there is no need to carry in and install the bag body as in the prior art, and a one-compartment frame is completed. It is possible to inject the greening material 3 every time.
Since such overlapping work can be performed, the construction period can be greatly shortened.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an embodiment of a slope revegetation method according to the present invention.
FIG. 2 is a cross-sectional view thereof.
FIG. 3 is an explanatory diagram of another embodiment of the present invention.
FIG. 4 is an explanatory diagram of an example of a conventional construction method.
FIG. 5 is a cross-sectional view of a conventional construction state.

Claims (4)

法面に膨脹させる以前のシート状の袋体群を敷設し、
敷設したシート状の袋体群の上面にコンクリート製の法枠を形成し、
その後に、法枠の枠間に露出した袋体内に、緑化用の材料を注入して行う、法面の緑化工法
Lay the sheet-like bag group before inflating on the slope,
A concrete frame is formed on the upper surface of the laid sheet-like bag group ,
After that, the planting method of the slope is done by injecting the greening material into the bag exposed between the frames of the frame.
法面に膨脹させる以前のシート状の袋体群を敷設し、
敷設したシート状の袋体群の上面にコンクリートブロックを配置して法枠を形成し、その後に、法枠の枠間に露出した袋体内に、緑化用の材料を注入して行う、法面の緑化工法
Lay the sheet-like bag group before inflating on the slope,
The slope is formed by placing concrete blocks on the upper surface of the laid sheet-like bag group to form a frame, and then injecting the material for greening into the bag exposed between the frame of the frame Greening method
法面に膨脹させる以前のシート状の袋体群を敷設し、
敷設したシート状の袋体群の上面にコンクリート類を吹付けて法枠を形成し、
その後に、法枠の枠間に露出した袋体内に、緑化用の材料を注入して行う、法面の緑化工法
Lay the sheet-like bag group before inflating on the slope,
A concrete frame is formed by spraying concrete on the upper surface of the laid sheet-like bag group ,
After that, the planting method of the slope is done by injecting the greening material into the bag exposed between the frames of the frame.
法面に膨脹させる以前のシート状の袋体群を敷設し、
敷設したシート状の袋体群の上面に型枠を組み立てその内部にコンクリート類を打設して法枠を形成し、
その後に、法枠の枠間に露出した袋体内に、緑化用の材料を注入して行う、法面の緑化工法
Lay the sheet-like bag group before inflating on the slope,
Assemble the formwork on the upper surface of the laid sheet-like bag group, and cast concrete inside to form the frame,
After that, the planting method of the slope is done by injecting the greening material into the bag exposed between the frames of the frame.
JP34058796A 1996-12-05 1996-12-05 Slope greening method Expired - Lifetime JP3807801B2 (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
JP34058796A JP3807801B2 (en) 1996-12-05 1996-12-05 Slope greening method

Publications (2)

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JPH10168888A JPH10168888A (en) 1998-06-23
JP3807801B2 true JP3807801B2 (en) 2006-08-09

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Publication number Priority date Publication date Assignee Title
KR100506489B1 (en) * 2004-11-05 2005-08-08 주식회사 오륙개발 A method of construction for stability and afforestation of a sloping surface
CN108625353A (en) * 2018-05-11 2018-10-09 闫涛 A kind of bringing soil erosion under control method

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