JP4043320B2

JP4043320B2 - Slope vegetation structure and its slope construction method

Info

Publication number: JP4043320B2
Application number: JP2002246897A
Authority: JP
Inventors: 幸一久保; 謙治木挽; 明中野; 修栄藤
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2002-04-16
Filing date: 2002-08-27
Publication date: 2008-02-06
Anticipated expiration: 2022-08-27
Also published as: JP2004003257A

Description

【０００１】
【発明の属する技術分野】
本発明は、法面植生構造及びその法面施工方法に関する。
【０００２】
【従来の技術】
近年、この種の技術では、法面に、鉄筋やコンクリート打設により井ゲタ状の法枠を設けて、その法枠の周辺の法面上に土嚢を配設したり、植物栽培基盤材を吹き付けたりすることで、地山の緑化を図ることが検討されている。
【０００３】
【発明が解決しようとする課題】
しかし、このような従来技術では、確かに地山の緑化を図れるものの、単に法枠を設けて緑化を図るものであることから、地すべりや法面崩壊などを防止し法面の安定化を図るという点からは万全ではなく、問題がある。
【０００４】
本発明は、上記実情に鑑みてなされたものであって、その目的は、法面の安定化及びその緑化を図ることができるようにするところにある。
【０００５】
【課題を解決するための手段】
請求項１記載の発明の特徴構成は、法面に載置自在な載置底板部を備えると共に、前記載置底板部にその周縁部に沿う周縁補強リブが立設され、その周縁補強リブ及び前記載置底板部にて植物栽培基盤材を充填可能な上方に開口を有する凹部を形成してある法面保護用受圧板を設け、前記法面保護用受圧板を、前記載置底板部に給排水用の孔を設けて、地中に係止したアンカー部材を用いて法面に、多数定着させるとともに、
前記各法面保護用受圧板の前記凹部に前記植物栽培基盤材を充填し、前記各法面保護用受圧板の周りの法面上を、前記植物栽培基盤材で覆ってあるところにある。
【０００６】
〔作用及び効果〕
法面に載置自在な載置底板部を備える法面保護用受圧板を、地中に係止したアンカー部材を用いて法面に多数定着させてあるので、地すべりや法面崩壊などを防止でき、しかも、その各法面保護用受圧板が備える凹部に植物栽培基盤材を充填し、その各法面保護用受圧板の周りの法面上を、前記植物栽培基盤材で覆ってあるので、地山の緑化を図ることができる。
従って、法面の安定化及びその緑化を図ることができる。
【０００８】
又、複数の補強リブにより補強される載置底板部によって確実に法面の安定化を図りながら、その複数の補強リブ及び載置底板部にて形成される空間を植物栽培基盤材を充填可能な凹部として利用でき、好適である。
【０００９】
請求項２記載の発明の特徴構成は、上記請求項１記載の特徴構成に加えて、前記法面保護用受圧板の外周および上端の少なくとも一方が露出されているところにある。
【００１０】
〔作用及び効果〕
法面保護用受圧板の外周および上端の少なくとも一方を露出させることで、凹部に充填させる植物栽培基盤材および法面の上を覆う植物栽培基盤材の量を削減でき、経済的である。
【００１１】
請求項３記載の発明の特徴構成は、上記請求項１又は２記載の特徴構成に加えて、前記凹部では、前記植物栽培基盤材の下に、植物の根が進入成長可能に成形された培床部材が収容されているところにある。
【００１２】
〔作用及び効果〕
本特徴構成を備える法面植生構造によれば、その施工性及び経済性を向上させることができる。
つまり、法面保護用受圧板の凹部にて、植物栽培基盤材の下に収容されている培床部材は成形されたものであるから、その凹部へ単に吹き付けなどにより植物栽培基盤材を充填するのに比べると、凹部への充填作業が容易となる。
そして、このように植物栽培基盤材の下に培床部材が収容されているので、培床部材によって、見かけ上凹部の底面が上げ底されたようになり、凹部に収容する植物栽培基盤材の量を削減することができるようにもなる。しかも、培床部材は植物の根が進入成長可能なものであるから、植物栽培基盤材だけでなくこの培床部材を用いて植物を栽培することもできる。よって、植物栽培基盤材の使用量を削減して、経済性をより向上させながら、好適に緑化を図ることができる。
【００１３】
又、請求項３記載の発明の特徴構成は、前記培床部材が、土嚢、通気性軽量コンクリート、保水材の少なくとも一種であるところにある。
【００１４】
〔作用及び効果〕
例えば土嚢は、その内外を植物の根が通過可能な袋体（例えば各種繊維からなるもの等）の中に、土等の植物を栽培可能な各種植物栽培床材をいれてあるもの
であればよく、また、通気性軽量コンクリートは、成型された塊を凹部に入れるだけで良いので、簡易かつ経済的である。また、保水材は、乾燥しやすい環境の法面に、特に有効である。
請求項４記載の発明の特徴構成は、上記請求項３記載の特徴構成に加えて、前記培床部材が、前記土嚢であり、前記周縁補強リブに対して、前記土嚢を介して貫通する貫通アンカーを打ち込んであるところにある。
〔作用及び効果〕
土嚢を法面保護用受圧板に固定できる。
請求項５記載の発明の特徴構成は、上記請求項３又は４に記載の特徴構成に加えて、前記植物栽培基盤材を前記法面保護用受圧板に固定可能なＴ字型のアンカー部材を前記植物栽培基盤材内に打ち込んであるところにある。
〔作用及び効果〕
植物栽培基盤材が乾燥などして収縮し、しめかためられた状態となったときでも、植物栽培基盤材が凹部より抜け出すのを防止できる。
【００１５】
請求項６記載の発明の特徴手段は、請求項３〜５のいずれかに記載の法面植生構造を施工する法面施工方法であって、
前記法面保護用受圧板を、前記アンカー部材を用いて法面に定着する定着工程を行った後、
前記凹部に前記培床部材を収容する収容工程を行って、
前記各法面保護用受圧板の前記凹部に前記植物栽培基盤材を充填し、前記各法面保護用受圧板の周りの法面上を、前記植物栽培基盤材で覆うところにある。
【００１６】
〔作用及び効果〕
定着工程を行い、法面保護用受圧板を法面に設置してから、収容工程により、凹部に前記培床部材を収容するので、法面保護用受圧板の設置状況や現場の状況に応じて凹部に培床部材を収容することができ、好適である。そして、各法面保護用受圧板の凹部に植物栽培基盤材を充填し、各法面保護用受圧板の周りの法面上を、植物栽培基盤材で覆うことで、請求項３〜５のいずれかに記載の作用効果を得ることができるようになる。
【００１７】
請求項７記載の発明の特徴手段は、請求項３〜５のいずれかに記載の法面植生構造を施工する法面施工方法であって、
前記凹部に前記培床部材を収容する収容工程を行った後、
前記法面保護用受圧板を、前記アンカー部材を用いて法面に定着する定着工程を行って、
前記各法面保護用受圧板の前記凹部に前記植物栽培基盤材を充填し、前記各法面保護用受圧板の周りの法面上を、前記植物栽培基盤材で覆うところにある。
【００１８】
〔作用及び効果〕
収容工程を行ってから定着工程を行うので、平場又は工場にて、凹部に培床部材を収容すればよく、施工性を向上させることが可能となり、好適である。そして、各法面保護用受圧板の凹部に植物栽培基盤材を充填し、各法面保護用受圧板の周りの法面上を、植物栽培基盤材で覆うことで、請求項３〜５のいずれかに記載の作用効果を得ることができるようになる。
【００１９】
請求項８記載の発明の特徴手段は、前記定着工程の前に、法面に網状体を貼るところにある。
【００２０】
〔作用及び効果〕
本特徴手段によれば、法面全面緑化を行う場合に、各種植物栽培床材の定着性が向上して、緑化効率が上がる。
【００２１】
請求項９記載の発明の特徴手段は、請求項４に記載の法面植生構造を施工する法面施工方法であって、前記凹部に前記土嚢を収容する収容工程を行った後、前記法面保護用受圧板を、前記アンカー部材を用いて法面に定着する定着工程を行って、前記各法面保護用受圧板の前記凹部に前記植物栽培基盤材を充填し、前記各法面保護用受圧板の周りの法面上を前記植物栽培基盤材で覆い、前記定着工程を行う前に、前記凹部に収容される前記土嚢を前記貫通アンカーを用いて前記法面保護用受圧板に固定する固定工程を行うところにある。
【００２２】
本特徴手段によれば、定着工程にて培床部材が移動したり凹部から落下したりするおそれを低減して、一層施工性を向上させることができ、殊に法面の斜面勾配が急なときでも培床部材を凹部に予め容易に収容させておくことができ、好適である。
【００２３】
【発明の実施の形態】
以下に本発明の実施の形態を図面に基づいて説明する。本発明に係る法面植生構造の概略平面図を図１に、断面図を図２に、法面保護用受圧板の一例の斜視図を図３に、法面植生構造の施工過程の一例の説明図を図４，５に示す。
【００２４】
図１，２に示すように、地中Ｂに係止したアンカー部材８を用いて法面保護用受圧板（以下単に受圧板と略称する）Ａを、法面Ｆに定着して地すべりや法面崩壊を防止するとともに、各受圧板Ａ及び各受圧板Ａの周りの法面上を、植物栽培基盤材Ｃで覆ってあり、受圧板Ａを利用しながら法面全体に植物を生育可能に構成し、地山Ｂの緑化を図ることができるようにしてある。
【００２５】
前記受圧板Ａは、地山Ｂに係止するアンカー部材８に対する係止連結部を備えると共に、法面Ｆに載置自在な載置底板部を設け、前記植物栽培基盤材Ｃを収容可能な上方に開口を有する凹部を設けてあるものであれば、如何なるものでもよいが、一例として、本実施形態では、図３の斜視図に示すような受圧板Ａを法面Ｆに定着してある。
図３に例示する受圧板Ａは、金属材料の一種であるダクタイル鋳鉄製のもので、すべての部材を一体に鋳造してあり、全体形状が平面視でほぼ菱形の４つの頂部が外方に向けて突出する形状に構成してあり、ほぼ十字状の突出梁部１と、その突出梁部１の十字状部分の隣り合うもの間にわたる板状の鍔状板部２とからなる。
【００２６】
前記突出梁部１は、図１〜３に示すように、四方に突出する十字状に形成され、そのほぼ中央に、地中Ｂに係止するアンカー部材８の挿通用として形成されたアンカー挿通部５と、アンカー部材８を係止するために前記アンカー挿通部５に形成された係止連結部６とを備えると共に、載置底板部３に補強リブ７を立設して構成してある。尚、前記係止連結部６は、突出梁部１の載置底板部３のほぼ中央の位置に設けられる前記アンカー挿通部５に、地中Ｂに係止するアンカー部材８を係止するように構成してある。
【００２７】
また、載置底板部３には、係止連結部６を囲堯するように前記補強リブ７として囲み補強リブ７Ｄが立設されるとともに、その囲み補強リブ７Ｄと係止連結部６に接続される十字状の補強板部１１が、設けてある。さらに、補強リブ７として、十字状の突出梁部１における載置底板部３の周縁部に沿う周縁補強リブ７Ａと、突出梁部１の十字状部分の幅方向中央位置にその十字状部分の長手方向に沿う縦貫補強リブ７Ｂと、突出梁部１の十字状部分の長手方向に対してほぼ直交する方向に沿う横方向リブ７Ｃとを、載置底板部３に一体に立設してある。
【００２８】
そして、各補強リブ７（周縁補強リブ７Ａ・縦貫補強リブ７Ｂ・横方向補強リブ７Ｃ・囲み補強リブ７Ｄ）及び載置底板部３にて囲まれ、上方に開口を有する空間が、植物栽培基板材Ｃを収容可能な凹部Ｓに相当する。
【００２９】
一方、前記鍔状板部２は、突出梁部１の十字状部分の隣り合うもの間を結び、しかも、その鍔状板部２の下面が、載置底板部３の下面と同一平面状となるように連接してあるほぼ板状のものである。
【００３０】
因みに、図３に例示するように、突出梁部１において、載置底板部３や、載置底板部３・周縁補強リブ７Ａ・縦貫補強リブ７Ｂ・横方向補強リブ７Ｃ・囲み補強リブ７Ｄで形成される隅部に、載置底板部３の表裏にかけて貫通する第一貫通孔３１や、第二貫通孔３２を設けておけば、前記第一貫通孔３１や第二貫通孔３２を介して、載置底板部３に溜まろうとする水分を確実に地山に排出し、水分が過剰になることなく適当に維持されて、これら植栽を適切な条件で育成させることができ、また、受圧板そのものが水分により腐食されるおそれも低減することができる。さらに、図３に例示するように、鍔状板部２にも、その表裏にかけて貫通する第三貫通孔３３を設けておけば、鍔状板部２の上に載置される植物栽培基盤材Ｃがその第三貫通孔３３により定着されて移動などし難くなると共に、第三貫通孔３３が上述の様な給排水用の孔として作用し、草木を十分に成長させて植栽することができ、有利である。
【００３１】
そして、前記凹部Ｓには、図２に示すように、植物の根が進入成長可能に成形された培床部材２０の上に、前記植物栽培基盤材Ｃが積層されることで、凹部Ｓでは、受圧板Ａの上を覆う植物栽培基盤材Ｃの下に、前記培床部材２０が収容されている。
【００３２】
前記培床部材２０は、植物の根が進入成長可能に成形されたものであれば如何なるものでもよく、例えば、通気性軽量コンクリートや保水材でもよく、図２，４，５には、培床部材２０として土嚢Ｄを収容してある構成を例示してある。尚、この土嚢Ｄとは、図示しないが、その内外を植物の根が通過可能な袋体（例えば各種繊維からなるもの等、特に天然繊維製の方が生分解により、収容した土等と一体になり易く好適である）の中に、土等の植物を栽培可能な各種植物栽培床材をいれてあるものであれば、如何なるものでもよい。
また、前記植物栽培基盤材Ｃは、前記培床部材２０と同様に、植物を栽培可能な植物栽培床材となるものであれば如何なるものでもよく、具体的な例については後述する。
【００３３】
次に、上述のように構成される法面植生構造の法面施工方法の一例について、図４，５を参照しながら説明する。
【００３４】
（１）まず、図４（イ）に示すように、受圧板Ａを、アンカー部材８を用いて法面Ｆに定着する定着工程を実施する。
具体的には、地山Ｂに掘削したアンカー穴にアンカー部材８を挿入して、アンカー穴にグラウト材１８を注入し、アンカー部材８を地中に固定しておき、そして、受圧板Ａを揚重機械で吊り上げ、吊り上げた受圧板Ａのアンカー挿通部５にアンカー部材８の地上露出部を貫通させた状態で、受圧板Ａを法面Ｆ上に設置して、アンカー部材８の地上露出部に締結部として螺設した雄ねじ部８Ａにアンカー緊張固定部材としてのナット９を螺合締結し、係止連結部６の受け座４を介してアンカー部材８を緊張し、固定する。尚、本実施形態では、受圧板Ａの載置底板部３の下面が法面Ｆに直接接地されるように受圧板Ａを設置させてあるが、前記設置底板部３の下面と法面Ｆとの間に、介在部材を介して、受圧板Ａを法面Ｆに設置するようにしてあってもよいし、また、一例として、囲み補強リブ７Ｄの上に蓋部材１０を覆設してあるが、本発明はこのような構成に限定されるものではなく、蓋部材１０を設けなくてもよい。そして、アンカー部材８は、ロッドやワイヤー等から任意に構成すればよく、また、受圧板Ａを法面Ｆに据え付けて、その受圧板Ａに設けられる係止連結部６を介して、アンカー部材８を緊張し固定するにあたっては、上述のように、雄ネジ部８Ａとナット９による螺合締結によるものに限らず、図示しないが、例えば、アンカー部材８をロックボルト等により係止連結部６に係止するなどその他任意の方法を用いても勿論よい。
【００３５】
（２）次に、図４（ロ）に示すように、受圧板Ａの凹部Ｓ内に、培床部材２０としての土嚢Ｄを収容する収容工程を行う。
【００３６】
（３）そして、図５に示すように、各受圧板Ａの凹部Ｓに植物栽培基盤材Ｃを充填し、各受圧板Ａの周りの法面Ｆ上を植物栽培基盤材Ｃで覆う基盤材吹き付け工程を行う。ここでは一例として、各受圧板Ａ及び各受圧板Ａの周りの法面Ｆ上を、植物栽培基盤材Ｃで覆ってある。
この基盤材吹き付け工程は、具体的には、例えば、次のような工法ａ〜ｃの中から、法面の土質や勾配などに応じたものを選択して実施すればよい。
工法ａ：植物栽培基盤材Ｃとして、木質繊維等に、粘着剤・被膜剤・植物の種子・肥料等を添加してあるスラリー状の植物栽培床材を、各受圧板Ａ及び各受圧板Ａの周りの法面Ｆ上に吹き付ける吹付工法。
工法ｂ：植物栽培基盤材Ｃとして、土（例えば黒ボク等）の各種土壌に、粘着剤・被膜剤・合成樹脂・繊維・植物の種子・肥料等を添加してある植物栽培床材を、各受圧板Ａ及び各受圧板Ａの周りの法面Ｆ上に吹き付ける吹付工法。
工法ｃ：植物栽培基盤材Ｃとして、人工土壌又は有機基材（例えば、土、木質繊維、バーク堆肥、ピートモス等）等に、高分子系樹脂・セメント・繊維・植物の種子・肥料等を添加してある植物栽培床材を、各受圧板Ａ及び各受圧板Ａの周りの法面Ｆ上に吹き付ける吹付工法。
尚、工法ａ，ｂ，ｃいずれのときについても、受圧板Ａや法面Ｆに吹き付けられる各種植物栽培床材の定着性を向上させるために、網状体として、繊維網・金網・むしろ等の補助材料を用いてもよい。尚、この補助材料は、例えば、受圧板を法面に設置する前に法面上に貼ればよい。
【００３７】
以上、（１），（２），（３）の各工程を順次行うことで施工が完了し、図１，２に示すような、法面植生構造を得ることができる。
【００３８】
このように本発明に係る法面植生構造では、凹部Ｓでは、受圧板Ａの上を覆う植物栽培基盤材Ｃの下に、植物の根が進入成長可能に成形された培床部材２０が収容されているので、その施工性及び経済性を向上させることができる。なお、前述のように培床部材２０は成形されたものであるので、凹部Ｓに収容されると、凹部Ｓと培床部材２０との間や培床部材２０どうし間に隙間が形成されることもあるが、培床部材２０の上は植物栽培基盤材Ｃにて覆われているので、そられ隙間にも植物栽培基盤材Ｃが適切に充填され、凹部Ｓを利用しながら植物を良好に生育して、地山の緑化を向上することができる。
【００３９】
〔別実施形態〕
以下に他の実施形態を説明する。
〈１〉先の実施形態では、法面植生構造を施工するにあたり、前記定着工程を行ってから、前記収容工程を行う例を示したが、図６に例示するように、現場の平場又は工場にて、予め、凹部Ｓに培床部材２０としての土嚢Ｄを収容する収容工程を行っておき、その後、先の実施形態と同様にして、その培床部材２０が凹部Ｓに収容されている受圧板Ａを法面Ｆに定着する定着工程を行って、その後、図５に例示するように前記覆設工程を行うようにしてもよい。すると、法面にて受圧板Ａに対して凹部Ｓに土嚢Ｄ等の培床部材２０を収容するときに比べて、一層施工性を向上させることができ、殊に法面の斜面勾配が急なときでも土嚢Ｄ等の培床部材２０を凹部Ｓに容易に収容でき好適である。
因みに、このような場合には、定着工程を行う前に、図７（イ），（ロ）に例示するように、土嚢Ｄを固定部材２５で受圧板Ａに固定する固定工程を行っておけば、定着工程にて、土嚢Ｄが移動したり凹部Ｓから落下したりするおそれを低減できより好ましい。図７（イ）は受圧板Ａの要部を示す斜視図で、図７（ロ）はその断面図であり、周縁補強リブ７Ａに対して、その十字状部分において、その長手方向に交差する方向に沿って、土嚢Ｄを介して貫通する貫通アンカー（固定部材の一例）２５を打ち込んで、土嚢Ｄを受圧板Ａに固定してある。
【００４０】
〈２〉先の実施形態では、一例として、各受圧板Ａ及び各受圧板Ａの周りの法面Ｆ上を、植物栽培基盤材Ｃで覆ってあるものについて説明したが、各受圧板Ａの凹部Ｓに植物栽培基盤材Ｃを充填し、各受圧板Ａの周りの法面Ｆ上を植物栽培基盤材Ｃで覆ってあれば如何なる構成でもよい。例えば、受圧板Ａの外周および上端の少なくとも一方が露出されていてもよく、例えば図８の断面説明図に示すように、受圧板Ａの上端（補強リブ７の上端）が露出する程度に凹部Ｓに植物栽培基盤材Ｃを充填し、受圧板Ａの外周（周辺補強リブ７Ａの外周）が露出する程度に法面Ｆ上を植物栽培基盤材Ｃで覆ってあってもよい。図８では、一例として、凹部Ｓ内に単に植物栽培基盤材Ｃを充填してあるものを例示したにすぎず、図示しないが、その植物栽培基盤材Ｃの下に前記培床部材２０が収容されていてもよい。
【００４１】
〈３〉また先の実施形態では、培床部材２０として土嚢Ｄを用いる例を示したが、培床部材２０は、植物の根が進入成長可能に成形されたものであれば如何なるものでもよい。例えば、図９に例示するように、凹部Ｓ内に通気性軽量コンクリート３５を打設することで培床部材２０としてもよい。また、図示しないが、培床部材は、例えば、工場や現場にて受圧板の凹部内に、土壌や繊維等からなり高い粘着性を有するスラリー状の植物栽培床材を充填することにより受圧板自体を利用して成形すると共に収容してなるものでもよいし、また、培床部材として、各種合成樹脂そのもの或いは各種バインダーを用いて土や繊維等から人工的に所定形状に成形し、植物の根が進入成長可能に構成してあるものを用いるようにしてもよい。
【００４２】
〈４〉図１０に例示するように、植物栽培基盤材Ｃを受圧板Ａに固定可能な抜出防止部材４０を設けてあれば、植物栽培基盤材Ｃが乾燥などして収縮し、しめかためられた状態となったときでも、植物栽培基盤材Ｃが凹部Ｓより抜け出すのを防止できる。図１０（イ）では、先述のようにして固定部材２５で受圧板Ａに固定される培床部材２０に係止するように、前記抜出防止部材としてのＴ字型のアンカー部材４０を植物栽培基盤材Ｃ内に打ち込んであり、また、図１０（ロ）では、地山Ｂに係止するように、前記抜出防止部材としてのＴ字型のアンカー部材４０を植物栽培基盤材Ｃ内に打ち込んである。
【００４３】
〈５〉また、図１１に例示するように、植物栽培基盤材Ｃの下方に保水材４６を収容してあれば、その保水材４６の保水効果により、植物栽培基盤材Ｃの乾燥が防止されるようになり、好適である。尚、図示しないが、植物栽培基盤材の下に収容される培床部材の下に保水材を収容してあってもよいし、または、培床部材中に保水材を混入してあってもよいし、または、植物栽培基盤材中に保水材を混入してあってもよく、いずれのときも、植物栽培基盤材の乾燥防止効果を期待できる。
【００４４】
〈６〉そして、先の実施形態では、植物栽培基盤材が植物の種を備えさせてある例を説明したが、植物栽培基盤材は植物の種を備えないものでも勿論よく、例えば、植物の種を別途植物栽培基盤材上に散布したり、培床部材に植物の種を備えさせたり、又は、植物栽培基盤材や培床部材に植物の苗や植物を植え付けたりすればよい。
【００４５】
〈７〉尚、先の実施形態で説明した法面保護用受圧板は一例であり、各種変形が可能である。法面保護用受圧板は載置底板部を備えると共に植物栽培基盤材を充填可能な上方に開口する凹部を形成してあるものであれば如何なる形状のものでもよく、平面視で、十字状又は正方形や菱形等各種多角形状でもよい（例えば、図１２参照）。
そして、図１２の平面図に例示するように、前記鍔状板部２を、各突出梁部１の頂部を結ぶものに形成し、平面視で菱形となるように法面保護用受圧板Ａを構成し、その鍔状板部２に多数の第三貫通孔３３を設けてあれば、その多数の第三貫通孔３３によって、鍔状板部２の上に載置される植物栽培基盤材Ｃが一層鍔状板部２に定着されるようになり、好適である。
また、法面保護用受圧板は、ダクタイル鋳鉄製に限らずその他の金属製のものでもよいし、ポリカーボネート、ナイロン、ＦＲＰ、ＢＭＣ等の高強度の樹脂材料（繊維強化樹脂も含む）製のものでもよい。そして、法面保護用受圧板は、一体型に形成してあるものに限らず、複数の分割体を組み合わせて形成するものでもよい。
尚、凹部に充填される植物栽培基盤材の下に培床部材を収容するときには、法面に、多数定着される各法面保護用受圧板のうち少なくとも一つの法面保護用受圧板の凹部にて、その凹部に充填される植物栽培基盤材の下に培床部材が収容されていればよく、また、法面保護用受圧板に凹部が二箇所以上あるときには、少なくとも一つの凹部に培床部材が収容されていればよい。
【００４６】
〈８〉また、本明細書において、「法面保護用受圧板を地中に係止したアンカー部材を用いて法面に定着する」とは、法面保護用受圧板を法面に据え付けて、その法面保護用受圧板に設けられる係止連結部を介して、アンカー部材を緊張し、固定することをいう。
【図面の簡単な説明】
【図１】本発明に係る法面植生構造の一例を示す概略平面図
【図２】本発明に係る法面植生構造の一例を示す断面図
【図３】法面保護用受圧板の一例を示す斜視図
【図４】本発明に係る法面植生構造の一施工状況を示す説明図
（イ）定着工程の一施工状況を示す説明図，（ロ）収容工程の一施工状況を示す説明図
【図５】本発明に係る法面植生構造の一施工状況（基盤材吹き付け工程）を示す説明図
【図６】本発明に係る法面植生構造の施工状況の別例（収容工程）を示す説明図
【図７】本発明に係る法面植生構造の施工状況の別例を示す説明図
（イ）斜視図，（ロ）断面図
【図８】本発明に係る法面植生構造の別例を示す説明図
【図９】本発明に係る法面植生構造の別例を示す説明図
【図１０】本発明に係る法面植生構造の別例を示す説明図
【図１１】本発明に係る法面植生構造の別例を示す説明図
【図１２】法面保護用受圧板の別例を示す平面図
【符号の説明】
Ａ法面保護用受圧板
Ｃ植物栽培基盤材
Ｄ土嚢
Ｆ法面
３載置底板部
７補強リブ
８アンカー部材
Ｓ凹部
２０培床部材
２５固定部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slope vegetation structure and a slope construction method thereof.
[0002]
[Prior art]
In recent years, in this type of technology, a well-shaped method frame is provided on the slope by placing reinforcing bars or concrete, and sandbags are arranged on the slope around the method frame, or plant cultivation base materials are used. It has been studied to plant greenery by spraying.
[0003]
[Problems to be solved by the invention]
However, with such a conventional technology, although it is possible to green the ground, it is only possible to set up a law frame for greening, so that landslides and slope failures are prevented to stabilize the slope. From this point, it is not perfect and there is a problem.
[0004]
The present invention has been made in view of the above circumstances, and an object of the present invention is to enable stabilization of a slope and greening thereof.
[0005]
[Means for Solving the Problems]
The characteristic configuration of the invention described in claim 1 includes a mounting bottom plate portion that can be mounted on a slope , and a peripheral reinforcing rib that extends along the peripheral portion of the mounting bottom plate portion. A slope-protecting pressure-receiving plate in which a concave portion having an opening is formed on the top of the bottom plate portion that can be filled with the plant cultivation base material is provided. While providing holes for water supply and drainage , using anchor members locked in the ground, fixing many on the slope,
The plant cultivation base material is filled in the concave portions of the slope protection pressure receiving plates, and the slopes around the slope protection pressure plates are covered with the plant cultivation base material.
[0006]
[Action and effect]
A large number of slope-protecting pressure-receiving plates with a mounting base plate that can be placed on the slope are fixed to the slope using anchor members locked in the ground, preventing landslides and slope failures. In addition, since the plant cultivation base material is filled in the recesses included in each of the slope protection pressure plates, the slope around each of the slope protection pressure plates is covered with the plant cultivation base material. The greening of natural ground can be achieved.
Therefore, stabilization of the slope and its greening can be achieved.
[0008]
In addition, it is possible to fill the space formed by the plurality of reinforcing ribs and the mounting bottom plate with plant cultivation base material while ensuring stabilization of the slope by the mounting bottom plate reinforced by the plurality of reinforcing ribs. It can be used as a concave portion and is suitable.
[0009]
Characterizing feature of the invention according to claim 2, in addition to the above characteristic structure according to claim 1 Symbol placement, there is to at least one of the outer and upper end of the slope face protective pressure-receiving plate is exposed.
[0010]
[Action and effect]
By exposing at least one of the outer periphery and the upper end of the pressure-receiving plate for slope protection, the amount of plant cultivation base material to be filled in the recess and the plant cultivation base material covering the slope can be reduced, which is economical.
[0011]
The feature of the invention of claim 3 is a culture in which, in addition to the feature of claim 1 or 2 , the root of the plant is formed in the recess so as to be able to enter and grow under the plant cultivation base material. It is where the floor member is housed.
[0012]
[Action and effect]
According to the slope vegetation structure provided with this feature configuration, its workability and economy can be improved.
In other words, since the culture bed member accommodated under the plant cultivation base material is molded in the concave portion of the pressure-receiving plate for slope protection, the plant cultivation base material is filled by simply spraying the concave portion. Compared to the above, the filling operation into the concave portion is facilitated.
And since the culture floor member is accommodated under the plant cultivation base material in this way, the bottom surface of the concave portion is apparently raised by the culture floor member, and the amount of the plant cultivation base material accommodated in the concave portion Can also be reduced. In addition, since the cultivated floor member allows plant roots to enter and grow, plants can also be cultivated using this cultivated floor member as well as the plant cultivation base material. Therefore, greening can be suitably achieved while reducing the amount of plant cultivation base material used and further improving the economic efficiency.
[0013]
Further, characterizing feature of the invention according to claim 3, before Symbol培床member, there sandbags, breathable lightweight concrete, where is at least one water-retaining material.
[0014]
[Action and effect]
For example, a sandbag is one that contains various plant cultivation floor materials that can grow plants such as soil in a bag body (for example, made of various fibers) through which the root of the plant can pass. Well, breathable lightweight concrete is simple and economical because it only requires the molded mass to be placed in the recess. In addition, the water retaining material is particularly effective for the environment in which it is easy to dry.
According to a fourth aspect of the present invention, in addition to the characteristic configuration of the third aspect, the cultivating floor member is the sandbag, and penetrates the peripheral reinforcing rib through the sandbag. The anchor is in place.
[Action and effect]
The sandbag can be fixed to the pressure-receiving plate for slope protection.
In addition to the characteristic configuration according to claim 3 or 4 , the characteristic configuration of the invention according to claim 5 is a T-shaped anchor member capable of fixing the plant cultivation base material to the pressure-receiving plate for slope protection. It is in a place where it is driven into the plant cultivation base material.
[Action and effect]
Even when the plant cultivation base material shrinks due to drying or the like and is in a crimped state, the plant cultivation base material can be prevented from coming out of the recess.
[0015]
The characteristic means of the invention described in claim 6 is a slope construction method for constructing the slope vegetation structure according to any one of claims 3 to 5 ,
After performing the fixing step of fixing the pressure-receiving plate for slope protection to the slope using the anchor member,
Performing an accommodating step of accommodating the culture bed member in the recess,
The plant cultivation base material is filled in the recesses of the slope protection pressure receiving plates, and the slopes around the slope protection pressure plates are covered with the plant cultivation base material.
[0016]
[Action and effect]
After the fixing process is performed and the pressure-protecting plate for slope protection is installed on the slope, the above-mentioned culture plate member is stored in the recess by the storing process, so depending on the installation situation of the pressure-protecting plate for slope protection and the situation at the site Therefore, the culture bed member can be accommodated in the recess, which is preferable. Then, filled with plant cultivation base material in the recess of the slope protection pressure-receiving plate, the upper slope face around each slope protection pressure-receiving plate, by covering a plant growing base material, according to claim 3-5 Any one of the operational effects described above can be obtained.
[0017]
The characteristic means of the invention according to claim 7 is a slope construction method for constructing the slope vegetation structure according to any one of claims 3 to 5 ,
After performing an accommodating step of accommodating the culture bed member in the recess,
Performing a fixing step of fixing the pressure-receiving plate for protecting the slope to the slope using the anchor member;
The plant cultivation base material is filled in the recesses of the slope protection pressure receiving plates, and the slopes around the slope protection pressure plates are covered with the plant cultivation base material.
[0018]
[Action and effect]
Since the fixing process is performed after the accommodation process, it is only necessary to accommodate the cultivating member in the recess in a flat place or a factory, which makes it possible to improve workability and is preferable. Then, filled with plant cultivation base material in the recess of the slope protection pressure-receiving plate, the upper slope face around each slope protection pressure-receiving plate, by covering a plant growing base material, according to claim 3-5 Any one of the operational effects described above can be obtained.
[0019]
The characteristic means of the invention described in claim 8 resides in that a net is pasted on the slope before the fixing step.
[0020]
[Action and effect]
According to the present characteristic means, when the slope is entirely greened, the fixability of various plant cultivation floor materials is improved and the greening efficiency is increased.
[0021]
According to a ninth aspect of the present invention, there is provided a slope construction method for constructing the slope vegetation structure according to claim 4, wherein after the step of housing the sandbag in the concave portion, the slope is constructed. A fixing step of fixing the pressure-receiving plate for protection to the slope using the anchor member is performed, and the concave portions of the pressure-receiving plates for slope protection are filled with the plant cultivation base material, The slope around the pressure plate is covered with the plant cultivation base material, and before the fixing step, the sandbag accommodated in the concave portion is fixed to the pressure plate for protecting the slope using the penetration anchor. The fixing process is in progress.
[0022]
According to this feature means, it is possible to improve the workability by reducing the possibility that the cultivating member moves or falls from the concave portion in the fixing process, and the slope of the slope is particularly steep. Even at times , the cultivating bed member can be easily accommodated in the recess in advance, which is preferable.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic plan view of a slope vegetation structure according to the present invention, FIG. 2 is a sectional view, FIG. 3 is a perspective view of an example of a pressure receiving plate for slope protection, and FIG. An explanatory diagram is shown in FIGS.
[0024]
As shown in FIGS. 1 and 2, a slope-protecting pressure-receiving plate (hereinafter simply referred to as a pressure-receiving plate) A is fixed on a slope F by using an anchor member 8 locked to the underground B, and a landslide or method. While preventing the collapse of the surface, the pressure plate A and the slope around each pressure plate A are covered with a plant cultivation base material C, and the plant can be grown on the whole slope while using the pressure plate A. It is configured so that the natural mountain B can be greened.
[0025]
The pressure receiving plate A includes a locking connection portion for the anchor member 8 locked to the natural ground B, and a mounting bottom plate portion that can be freely mounted on the slope F, and can accommodate the plant cultivation base material C. As long as a concave portion having an opening is provided on the upper side, it may be anything, but as an example, in this embodiment, a pressure receiving plate A as shown in the perspective view of FIG. .
The pressure receiving plate A illustrated in FIG. 3 is made of ductile cast iron, which is a kind of metal material, and all members are integrally cast, and the four tops of the overall rhombus are outward in the plan view. The projecting beam portion 1 has a substantially cross-shaped projecting beam portion 1 and a plate-shaped bowl-shaped plate portion 2 extending between adjacent ones of the cross-shaped portion of the projecting beam portion 1.
[0026]
As shown in FIGS. 1 to 3, the protruding beam portion 1 is formed in a cross shape that protrudes in all directions, and an anchor insertion portion that is formed for insertion of an anchor member 8 that is locked to the underground B is provided at substantially the center thereof. In addition to a portion 5 and a locking connecting portion 6 formed in the anchor insertion portion 5 for locking the anchor member 8, a reinforcing rib 7 is provided upright on the mounting bottom plate portion 3. . In addition, the said latching connection part 6 latches the anchor member 8 latched to the underground B to the said anchor penetration part 5 provided in the substantially center position of the mounting baseplate part 3 of the protrusion beam part 1. FIG. It is configured.
[0027]
Further, the mounting bottom plate portion 3 is provided with a surrounding reinforcing rib 7D as the reinforcing rib 7 so as to surround the locking connecting portion 6, and is connected to the surrounding reinforcing rib 7D and the locking connecting portion 6. A cross-shaped reinforcing plate portion 11 is provided. Further, as the reinforcing rib 7, a peripheral reinforcing rib 7A along the peripheral portion of the mounting bottom plate portion 3 in the cross-shaped protruding beam portion 1, and the cross-shaped portion of the cross-shaped portion of the protruding beam portion 1 at the center in the width direction. Longitudinal reinforcing ribs 7B along the longitudinal direction and lateral ribs 7C along a direction substantially orthogonal to the longitudinal direction of the cross-shaped portion of the protruding beam portion 1 are erected integrally with the mounting bottom plate portion 3. .
[0028]
The space surrounded by the reinforcing ribs 7 (the peripheral reinforcing ribs 7A, the longitudinal reinforcing ribs 7B, the lateral reinforcing ribs 7C, and the surrounding reinforcing ribs 7D) and the mounting bottom plate portion 3 and having an opening on the upper side is a plant cultivation base. It corresponds to the recess S that can accommodate the plate material C.
[0029]
On the other hand, the hook-shaped plate portion 2 connects adjacent cross-shaped portions of the protruding beam portion 1, and the lower surface of the hook-shaped plate portion 2 is flush with the lower surface of the mounting bottom plate portion 3. It is a substantially plate-like thing connected so that it may become.
[0030]
Incidentally, as illustrated in FIG. 3, in the protruding beam portion 1, the mounting bottom plate portion 3, the mounting bottom plate portion 3, the peripheral reinforcing rib 7 A, the longitudinal reinforcing rib 7 B, the lateral reinforcing rib 7 C, and the surrounding reinforcing rib 7 D. If the first through-hole 31 and the second through-hole 32 that pass through the front and back of the mounting bottom plate portion 3 are provided in the formed corner, the first through-hole 31 and the second through-hole 32 are interposed. The water that is about to accumulate on the mounting bottom plate part 3 is surely discharged to the ground, and the water is appropriately maintained without excessive water, and these plants can be grown under appropriate conditions. The risk of the plate itself being corroded by moisture can also be reduced. Further, as illustrated in FIG. 3, the plant cultivation base material placed on the bowl-shaped plate portion 2 if the bowl-shaped plate portion 2 is also provided with a third through-hole 33 penetrating through the front and back. C is fixed by the third through-hole 33 and becomes difficult to move, and the third through-hole 33 acts as a water supply / drainage hole as described above, so that plants can be sufficiently grown and planted. Is advantageous.
[0031]
And in the said recessed part S, as shown in FIG. 2, the said plant cultivation base material C is laminated | stacked on the culture bed member 20 shape | molded so that the root of a plant could enter and grow, In the recessed part S, The culture bed member 20 is accommodated under the plant cultivation base material C that covers the pressure plate A.
[0032]
The culture bed member 20 may be any material as long as the roots of the plant are formed so as to be able to enter and grow, and may be, for example, breathable lightweight concrete or water retention material. The structure which accommodates the sandbag D as the member 20 is illustrated. Although not shown, this sandbag D is a bag body through which the roots of the plant can pass (for example, those made of various fibers, especially natural fibers made by biodegradation and integrated with the soil contained therein) Any material may be used as long as it contains various plant cultivation floor materials capable of cultivating plants such as soil.
Further, the plant cultivation base material C may be any material as long as it is a plant cultivation floor material capable of cultivating a plant, as in the case of the cultivating floor member 20, and specific examples will be described later.
[0033]
Next, an example of the slope construction method of the slope vegetation structure configured as described above will be described with reference to FIGS.
[0034]
(1) First, as shown in FIG. 4A, a fixing step of fixing the pressure receiving plate A to the slope F using the anchor member 8 is performed.
Specifically, the anchor member 8 is inserted into the anchor hole excavated in the natural ground B, the grout material 18 is injected into the anchor hole, the anchor member 8 is fixed in the ground, and the pressure receiving plate A is The pressure receiving plate A is installed on the slope F with the ground exposed portion of the anchor member 8 penetrating through the anchor insertion portion 5 of the lifted pressure receiving plate A and lifted by the lifting machine. A nut 9 as an anchor tension fixing member is screwed and fastened to a male screw portion 8 A screwed as a fastening portion to the portion, and the anchor member 8 is tensioned and fixed via the receiving seat 4 of the locking connection portion 6. In this embodiment, the pressure receiving plate A is installed so that the lower surface of the mounting bottom plate portion 3 of the pressure receiving plate A is directly grounded to the slope F, but the lower surface of the installation bottom plate 3 and the slope F The pressure receiving plate A may be installed on the slope F via an intervening member, and as an example, the lid member 10 is provided on the surrounding reinforcing rib 7D. However, the present invention is not limited to such a configuration, and the lid member 10 may not be provided. And the anchor member 8 should just be comprised arbitrarily from a rod, a wire, etc. Moreover, an anchor member is installed via the latching connection part 6 which installs the pressure receiving plate A in the slope F, and is provided in the pressure receiving plate A. In tensioning and fixing 8, as described above, the anchor connection portion 6 is not limited to the screwed fastening by the male screw portion 8 A and the nut 9, but is not illustrated, for example, the anchor connecting portion 6 is locked by a lock bolt or the like. Of course, any other method, such as locking to, may be used.
[0035]
(2) Next, as shown in FIG. 4 (b), a housing step of housing the sandbag D as the culture bed member 20 in the recess S of the pressure receiving plate A is performed.
[0036]
(3) And as shown in FIG. 5, the base material which fills the recessed part S of each pressure receiving plate A with the plant cultivation base material C, and covers the slope F around each pressure receiving plate A with the plant cultivation base material C A spraying process is performed. Here, as an example, each pressure receiving plate A and the slope F around each pressure receiving plate A are covered with a plant cultivation base material C.
Specifically, the base material spraying step may be performed by selecting, for example, a method according to the soil texture or gradient of the slope from the following construction methods a to c.
Construction method a: As the plant cultivation base material C, each of the pressure plate A and each pressure plate A is a slurry-like plant cultivation floor material in which an adhesive, a coating agent, a plant seed, a fertilizer, etc. are added to wood fibers. Spraying method to spray on the slope F around.
Method b: As plant cultivation base material C, plant cultivation floor materials in which adhesives, coating agents, synthetic resins, fibers, plant seeds, fertilizers, etc. are added to various soils of soil (for example, black me), A spraying method in which each pressure receiving plate A and the slope F around each pressure receiving plate A are sprayed.
Method c: Addition of polymer resin, cement, fiber, plant seed, fertilizer, etc. to artificial soil or organic base material (eg soil, wood fiber, bark compost, peat moss, etc.) as plant cultivation base material C The spraying construction method which sprays the plant-cultivated flooring which is made on each pressure receiving plate A and the slope F around each pressure receiving plate A.
In any of the construction methods a, b, and c, in order to improve the fixability of various plant cultivation floor materials sprayed on the pressure plate A and the slope F, as a net-like body, a fiber net, a wire net, or rather, etc. Auxiliary materials may be used. In addition, what is necessary is just to stick this auxiliary | assistant material on a slope, for example, before installing a pressure receiving plate in a slope.
[0037]
As described above, construction is completed by sequentially performing the steps (1), (2), and (3), and a slope vegetation structure as shown in FIGS. 1 and 2 can be obtained.
[0038]
As described above, in the slope vegetation structure according to the present invention, in the concave portion S, the culture bed member 20 formed so that the roots of the plant can enter and grow is accommodated under the plant cultivation base material C covering the pressure receiving plate A. Therefore, the workability and economy can be improved. In addition, since the cultivating member 20 is molded as described above, when it is accommodated in the recess S, a gap is formed between the dent S and the cultivating member 20 or between the cultivating members 20. In some cases, the top of the cultivating floor member 20 is covered with the plant cultivation base material C, so that the plant cultivation base material C is appropriately filled in the gaps, and the plant is good while using the recess S. It is possible to improve the greening of natural mountains.
[0039]
[Another embodiment]
Other embodiments will be described below.
<1> In the previous embodiment, when constructing a slope vegetation structure, an example of performing the accommodation step after performing the fixing step has been shown. However, as illustrated in FIG. In advance, an accommodating step of accommodating the sandbag D as the cultivating bed member 20 in the recess S is performed, and then the cultivating floor member 20 is accommodated in the recess S in the same manner as in the previous embodiment. A fixing step of fixing the pressure receiving plate A to the slope F may be performed, and then the covering step may be performed as illustrated in FIG. Then, compared with the case where the culture plate member 20 such as the sandbag D is accommodated in the recess S with respect to the pressure receiving plate A on the slope, the workability can be further improved, and the slope of the slope on the slope is particularly steep. At any time, it is preferable that the culture bed member 20 such as the sandbag D can be easily accommodated in the recess S.
Incidentally, in such a case, before the fixing step, the fixing step of fixing the sandbag D to the pressure receiving plate A with the fixing member 25 can be performed as illustrated in FIGS. For example, the possibility that the sandbag D moves or falls from the recess S in the fixing process can be reduced, which is more preferable. FIG. 7 (a) is a perspective view showing the main part of the pressure receiving plate A, and FIG. 7 (b) is a cross-sectional view thereof, which intersects the longitudinal direction in the cross-shaped portion with respect to the peripheral reinforcing rib 7A. A penetration anchor (an example of a fixing member) 25 penetrating through the sandbag D is driven along the direction, and the sandbag D is fixed to the pressure receiving plate A.
[0040]
<2> In the previous embodiment, as an example, each pressure receiving plate A and the slope F around each pressure receiving plate A have been described as being covered with a plant cultivation base material C. Any configuration may be used as long as the recess S is filled with the plant cultivation base material C and the slope F around each pressure receiving plate A is covered with the plant cultivation base material C. For example, at least one of the outer periphery and the upper end of the pressure receiving plate A may be exposed. For example, as shown in the cross-sectional explanatory view of FIG. 8, the recess is such that the upper end of the pressure receiving plate A (the upper end of the reinforcing rib 7) is exposed. The plant cultivation base material C may be covered to the extent that the outer surface of the pressure receiving plate A (the outer periphery of the peripheral reinforcing rib 7A) is exposed by filling S with the plant cultivation base material C. In FIG. 8, as an example, only the plant cultivation base material C filled in the concave portion S is illustrated, and although not shown, the culture bed member 20 is accommodated under the plant cultivation base material C. May be.
[0041]
<3> In the previous embodiment, an example in which the sandbag D is used as the culture bed member 20 has been described. However, the culture bed member 20 may be any material as long as the root of the plant is formed so as to be able to enter and grow. . For example, as illustrated in FIG. 9, the cultivated floor member 20 may be formed by placing breathable lightweight concrete 35 in the recess S. Moreover, although not shown in figure, a cultivating floor member is a pressure receiving plate by filling the slurry-like plant cultivation floor material which consists of soil, a fiber, etc. and has high adhesiveness in the recessed part of a pressure receiving plate in a factory or the field, for example. It may be molded and housed using itself, or it may be artificially molded from soil or fiber using a variety of synthetic resins or various binders as a culture bed member, You may make it use what is comprised so that a root | tip can be grown.
[0042]
<4> As illustrated in FIG. 10, if the extraction preventing member 40 capable of fixing the plant cultivation base material C to the pressure receiving plate A is provided, the plant cultivation base material C shrinks due to drying or the like, and is crimped. Even when it is in a stale state, it is possible to prevent the plant cultivation base material C from coming out of the recess S. In FIG. 10 (a), the T-shaped anchor member 40 as the extraction preventing member is planted so as to be locked to the culture bed member 20 fixed to the pressure receiving plate A by the fixing member 25 as described above. In FIG. 10 (b), the T-shaped anchor member 40 as the extraction preventing member is placed in the plant cultivation base material C so as to be locked to the natural ground B. It is driven into.
[0043]
<5> Further, as illustrated in FIG. 11, if the water retention material 46 is accommodated below the plant cultivation base material C, the drying of the plant cultivation base material C is prevented by the water retention effect of the water retention material 46. This is preferable. Although not shown in the drawings, a water retention material may be accommodated under the culture bed member accommodated under the plant cultivation base material, or a water retention material may be mixed into the culture bed member. Alternatively, a water retention material may be mixed in the plant cultivation base material, and in any case, the drying prevention effect of the plant cultivation base material can be expected.
[0044]
<6> And, in the previous embodiment, the example in which the plant cultivation base material is provided with plant seeds has been described, but the plant cultivation base material may of course not be provided with plant seeds. The seeds may be separately sprayed on the plant cultivation base material, the seeds of the plant may be provided on the culture material, or plant seedlings and plants may be planted on the plant cultivation base material or the culture material.
[0045]
<7> The slope protecting pressure plate described in the previous embodiment is an example, and various modifications are possible. The pressure-protecting plate for slope protection may have any shape as long as it has a mounting bottom plate portion and has a concave portion that opens upward so that it can be filled with plant cultivation base material. may be of a square or rhomboid such as various polygonal shapes (e.g., Fig. 1 2 see).
Then, as illustrated in the plan view of FIG. 12, the saddle-shaped plate portion 2 is formed to connect the top portions of the protruding beam portions 1, and the pressure-receiving plate A for protecting the slope is formed so as to have a rhombus in plan view. If a large number of third through holes 33 are provided in the bowl-shaped plate portion 2, the plant cultivation base material placed on the bowl-shaped plate portion 2 by the large number of third through holes 33. C is further fixed to the bowl-shaped plate portion 2, which is preferable.
Also, slope protection pressure-receiving plate may be those made of other metal not limited to steel ductile iron, polycarbonate, nylon, FRP, (including fiber-reinforced resin) high-strength resin material such as BMC made It may be a thing. Then, slope protection pressure-receiving plate is not limited to that is formed in one piece, it may be one formed by combining a plurality of divided bodies.
In addition, when accommodating a culture bed member under the plant cultivation base material filled in the recess, the recess of at least one of the slope protection pressure plates among the slope protection pressure plates fixed on the slope In this case, it is sufficient that the cultivating floor member is accommodated under the plant cultivation base material filled in the concave portion, and when there are two or more concave portions on the slope-protecting pressure receiving plate, the cultivating member is cultivated in at least one concave portion. The floor member should just be accommodated.
[0046]
<8> Further, in this specification, “fixing the slope protection pressure plate to the slope using the anchor member that is locked in the ground” means that the slope protection pressure plate is installed on the slope. This means that the anchor member is tensioned and fixed via a locking connection portion provided on the pressure-receiving plate for protecting the slope.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an example of a slope vegetation structure according to the present invention. FIG. 2 is a cross-sectional view showing an example of a slope vegetation structure according to the invention. FIG. 4 is an explanatory diagram showing one construction status of a slope vegetation structure according to the present invention. (A) An explanatory diagram showing one construction status of the fixing process, (b) An explanatory diagram showing one construction status of the housing process FIG. 5 is an explanatory view showing one construction situation (base material spraying process) of a slope vegetation structure according to the present invention. FIG. 6 shows another example (containment process) of the construction situation of the slope vegetation structure according to the invention. Explanatory drawing [FIG. 7] Explanatory drawing which shows another example of the construction situation of the slope vegetation structure which concerns on this invention (A) Perspective view, (B) Cross-sectional view [FIG. 8] Another example of the slope vegetation structure which concerns on this invention FIG. 9 is an explanatory diagram showing another example of the slope vegetation structure according to the present invention. FIG. 10 is another example of the slope vegetation structure according to the invention. Plan view showing another example of to illustration explanatory view showing another example of slope vegetation structure according to [11] the present invention and FIG. 12 slope face protective pressure-receiving plate
[ Explanation of symbols]
A Pressure-receiving plate for slope protection C Plant cultivation base material D Sandbag F Slope 3 Placement bottom plate 7 Reinforcement rib 8 Anchor member S Recess 20 Growth bed member 25 Fixing member

Claims

A mounting bottom plate portion that can be freely mounted on a slope is provided, and a peripheral reinforcing rib is provided on the mounting bottom plate portion along the peripheral portion thereof, and a plant cultivation base material is provided on the peripheral reinforcing rib and the mounting bottom plate portion. A pressure-receiving plate for slope protection with an opening formed on the upper side that can be filled is provided, and the pressure-receiving plate for slope protection is provided with holes for water supply / drainage in the above-mentioned bottom plate portion , While fixing many on the slope using the anchor member that has been locked,
The slope vegetation structure, in which the plant cultivation base material is filled in the recesses of the slope protection pressure plates, and the slopes around the slope protection pressure plates are covered with the plant cultivation base material. .

The slope vegetation structure according to claim 1 , wherein at least one of an outer periphery and an upper end of the slope-protecting pressure receiving plate is exposed .

In the concave portion, a culture bed member formed so that plant roots can enter and grow is accommodated under the plant cultivation base material, and the culture bed member is at least one of sandbag, breathable lightweight concrete, and water retention material. The slope vegetation structure according to claim 1 or 2.

The slope vegetation structure according to claim 3, wherein the culture bed member is the sandbag, and a penetrating anchor penetrating through the sandbag is driven into the peripheral reinforcing rib .

The slope vegetation structure according to claim 3 or 4 , wherein a T-shaped anchor member capable of fixing the plant cultivation base material to the pressure-protecting pressure plate is driven into the plant cultivation base material.

A slope construction method for constructing the slope vegetation structure according to any one of claims 3 to 5 ,
After performing the fixing step of fixing the pressure-receiving plate for slope protection to the slope using the anchor member,
Performing an accommodating step of accommodating the culture bed member in the recess,
The slope construction method which fills the said plant cultivation base material in the said recessed part of each said pressure-receiving board for slope protection, and covers on the slope around the said pressure-receiving board for each slope protection with the said plant cultivation base material.

A slope construction method for constructing the slope vegetation structure according to any one of claims 3 to 5 ,
After performing an accommodating step of accommodating the culture bed member in the recess,
Performing a fixing step of fixing the pressure-receiving plate for protecting the slope to the slope using the anchor member;
The slope construction method which fills the said plant cultivation base material in the said recessed part of each said pressure-receiving board for slope protection, and covers on the slope around the said pressure-receiving board for each slope protection with the said plant cultivation base material.

The slope construction method according to claim 6 or 7, wherein a network is pasted on the slope before the fixing step.

A slope construction method for constructing the slope vegetation structure according to claim 4,
After performing the housing step of housing the sandbag in the recess,
Performing a fixing step of fixing the pressure-receiving plate for protecting the slope to the slope using the anchor member;
Filling the concave portion of each slope protection pressure plate with the plant cultivation base material, and covering the slope around each slope protection pressure plate with the plant cultivation base material,
A slope construction method for performing a fixing step of fixing the sandbag accommodated in the recess to the pressure-receiving plate for slope protection using the penetration anchor before performing the fixing step.