JP3702871B2

JP3702871B2 - Sandbag, sandbag installation method and banking method using the sandbag

Info

Publication number: JP3702871B2
Application number: JP2002242881A
Authority: JP
Inventors: 稔本田; 真宏井; 元一杉原; 直子前田
Original assignee: 株式会社エフイ石灰技術研究所
Priority date: 2002-08-23
Filing date: 2002-08-23
Publication date: 2005-10-05
Anticipated expiration: 2022-08-23
Also published as: JP2004084183A

Description

【０００１】
【発明の属する技術分野】
この発明は、盛土等に適用可能な大型の土嚢袋に関するものであり、全体として高い強度を持っているとともに、内部に投入する用土の状態を問わず使用することができるようにしたものである。なお、本出願で用土と称するものは、浚渫土砂，ヘドロ，建設残土など及びその用土を含むものである。さらに、この発明に係る土嚢袋を使用した土嚢の設置方法と盛土工法に関するものである。
【０００２】
【従来の技術】
従来から大型の袋状の土嚢袋もあるが、これらは土嚢としての用途よりは主として材料の運搬や飼料の運搬に使用されることを目的としている。
【０００３】
【発明が解決しようとする課題】
したがって、従来のものは強度や長期耐久性に問題がある。災害復旧の際等の応急用としては間に合っているが、永久構造物として用いるには問題があり、また使用勝手にも不都合がある。
【０００４】
すなわち、構造的には長期耐久性を目的としていないので、盛土等に使用するための土嚢袋として使用するにはその強度が十分ではない。また、高含水の用土などを用いる場合においては、透水性に関し袋の素材や構造について考慮されていないので袋内の水分が外に速やかに排出されず安定しない。
【０００５】
一方、従来の大型土嚢を高盛土に使用する場合には、設置した土嚢どうしの結合力がないため、転倒・崩壊する懸念があり、したがって土嚢を高く積みあげることが困難であるとともに、転倒や崩壊を防ぐためには土嚢を垂直に積まず、上下方向に互い違いになるように積む必要があり、結果として垂直の法面を形成するような積み方はできない。
【０００６】
【課題を解決するための手段】
すなわち、大型土嚢袋を盛土に適用するためには、袋全体として十分な強度を有するとともに、用土の水分が速やかに排出されるように袋の素材について配慮し、また設置後の転倒や崩壊を防ぐために隣接する土嚢どうしを簡単に結合することができるようにする必要がある。さらに、土嚢敷設時に隙間なく敷きつめられるようにするために、袋が中に入れた用土により膨らんだりせずに円筒形状を極力保つような構造にしておく必要がある。
【０００７】
また、土嚢を数段積みあげた場合にも安定しているようにするために、隣接する土嚢どうしを結合するだけではなく、積み上げた土嚢を上下に貫通させるＨ鋼などの支柱が容易に打ちこめるような構造にしておく必要がある。
【０００８】
そこで、この発明にかかる土嚢袋は前記課題を解決するために、有底円筒状の袋体の底面中央部及び側面下方を所望面積透水性を有する素材で、そして他の部分は非透水性の素材で形成し、袋体側面外周に環状補強帯を所望間隔で所望数縫着し、Ｕ字形に曲げた２本の吊り帯の中央部分を吊り下げ部とし両側部分をそれぞれ等間隔で環状補強帯と直交するようにし、吊り帯は環状補強帯と交叉する部分で環状補強帯と縫着するとともに、底面中央部の透水性素材部とその周囲の非透水性素材部の境界に底面補強帯を縫着し吊り帯の各先端をこの底面補強帯に縫着したものである。
【０００９】
あるいは、これに加え袋体の上面を透水性素材又は非透水性素材で塞ぎ、中央部分には放射状に切れ目を形成して投入口とするとともに、投入口部分の内側には内容物飛散防止用の布の一辺を縫着したり、吊り下げ部の長さを土嚢袋の直径の１．２倍〜３．０倍としたものである。
【００１０】
また、この発明にかかる土嚢設置方法は本発明の土嚢袋に用土を入れ土嚢を所定箇所に敷きつめつつ又は敷きつめた後に、各土嚢袋の吊り下げ部を任意箇所で切断し、この切断した吊り下げ部を隣接する土嚢袋の吊り帯部分に結んで土嚢を一体化するようにし、さらに前記の方法により土嚢袋を所望段数上下の土嚢が同軸上に位置するように積み、積んだ土嚢のうち任意箇所の土嚢袋について最上段の土嚢袋の上面開口部から最下段の土嚢袋の底面の透水性素材部を貫通するように支柱を打ち込んだものである。
【００１１】
一方、この発明にかかる盛土工法は前記の方法により土嚢を設置し、最外列の土嚢と間隔をあけて簡易壁を構築し、土嚢と簡易壁の間に裏込め土を投入するとともに、積み上げた土嚢の内側に所望高さになるまで用土を盛土するようにしたものである。
【００１２】
【作用】
土嚢袋の底面の中央部と側面下方を非透水性素材にしておくことにより土嚢内に高含水の用土などを投入して用土とした場合でも、水分は用土の自重によりこの透水性素材で形成した部分から容易に外に排出される。
【００１３】
また、袋の円筒部には環状補強帯を縫着し底部には底面補強帯を縫着したので、袋全体として極めて大きな強度を有し、さらに吊り帯はこれら環状補強帯と底面補強帯を接続したので土嚢吊り上げ時に袋が内部の用土の重みに負けて破損するようなことを防止できる。
【００１４】
さらに、設置後は吊り下げ部を途中で切断することにより、この切断した吊り下げ部を利用して隣接する土嚢の吊り帯に結合することができ、土嚢設置後の転倒や崩壊を防止できる。また、投入口と透水性素材で形成した底面中央部をを利用して垂直にＨ鋼等の支柱を容易に打ち込むことができ、盛土時の土嚢の安定性をさらに高めることができる。一方、盛土の土圧自体は土嚢で殆どを受け止め止めることが可能となり、土嚢の外側には化粧用の簡易壁を建築用コンクリート積ブロックや矢板等により施工することが可能となる。
【００１５】
【発明の実施の態様】
次に、この発明にかかる土嚢袋の一実施例を図１〜図３に基づいて述べる。
１は有底円筒状の袋体であり、底面中央部２及び側面下方部３は所望面積透水性を有する素材で形成してある。そして袋体１の他の部分４は非透水性の素材で形成してある。非透水性の素材としては例えば網地の材料などが使用できるが、その他袋体１全体をポリプロピレン製として底面中央部２と側面下方部３には防水処理をせず、他の部分４には防水処理をして非透水性となるようにしておいてもよい。また、非透水性素材で形成する箇所は図示した面積や箇所に限定されるものではなく、袋体１の下側から水分が外に速やかに排出できればよい。
【００１６】
袋体側面外周には環状補強帯５が所望間隔で所望数縫着してある。図示した例では、側面底部と上端を少し空けて等間隔で三本縫着した例を示したが、これらは袋の大きさ等により適宜選択すればよい。また、縫着する代わりに接着剤により接着したりあるいは環状補強帯５と袋体１の素材によっては熱溶着等の方法によって固着させてもよい。なお、環状補強帯５の素材としてはある程度以上の引張強度を有していれば合成繊維製でも天然繊維製でも何でよい。また、幅も適当でよいが、例えば図示した例（袋体１はポリプロピレン製であり直径と高さは共に１１０ｃｍ）の場合は、環状補強帯５の幅は１０ｃｍとして袋体１の側面底部と上端をそれぞれ１０ｃｍ空けて等間隔で三本としている。
【００１７】
６はＵ字形に曲げた２本の吊り帯であり、その中央部分は吊り下げ部７となる。そして両側部分はそれぞれ等間隔（図３の底面図で円周の１／４周間隔で）で環状補強帯５と直交するようにし、吊り帯６は環状補強帯５と直交する交叉部８で環状補強帯５と縫着してある。すなわち、吊り帯６は環状補強帯５と交叉する交叉部８以外は袋体１とは分離しており、後述するようにこの分離部９を利用して隣接する土嚢と結合することができる。
【００１８】
また、底面中央部２の透水性素材部とその周囲の非透水性素材部１０の境界には底面補強帯１１が縫着してある。そして吊り帯６の各先端１２はこの底面補強帯１１に縫着してある。なお、吊り帯６の吊り下げ部７の長さをは袋体１の直径の１．２倍〜３．０倍とする。吊り下げ部７は後述するようにこの部分を設置後に切断して結合ロープとして使用するので長いほど便利であるが、しかし長すぎると土嚢設置作業時に不必要に土嚢を高く吊り上げなければならず、作業効率が悪くなるので、妥協点として上記位の長さにしておくことが適当である。
【００１９】
袋体１の上面１３は必要に応じて透水性素材又は非透水性素材で塞いであり、中央部分には放射状に切れ目１４を形成して投入口１５としてある。投入口１５部分の内側には内容物飛散防止用に投入口１５を挟むように対向して投入口１５を塞ぐ大きさの二枚の布１６がそれぞれ一辺を上面１３の投入口１５の端部に縫着してある。そして、上面１３の放射状の切れ目１４の先端には絞り紐１７が通してあり巾着状に投入口１５となっている開口部を狭めることができる。すなわち、投入口１５は内容物飛散防止用の二枚の布１６と巾着状に狭めることができる袋体１上面１３の三枚の材料により閉鎖されることになる。
【００２０】
次に、本発明の土嚢袋を利用した土嚢設置方法を図４及び図５に基づいて述べる。
上記した土嚢袋の投入口１５を開いて中に適当な用土を入れる。土嚢袋内の排水についても考慮してあるので、含水率が高い場合も利用することができる。そして、土嚢袋内に土砂を入れ終ったら、絞り紐１７を絞って投入口１５を狭める。ここまでの作業は土嚢設置箇所において行ってもよいし、あるいはその他の場所で行ってもよい。
【００２１】
なお、土嚢袋に入れる用土としては先に述べたような各種土砂等のほか、降雨や日照等の天候あるいはその他の外的要因により土嚢袋に破損が生じる場合や永久構造物の構築という点を考慮すると、安定処理土を用いることが望ましい。但し、安定処理土でもセメント安定処理のように、土嚢を設置する前に固まってしまうような速硬性のものは安定性の面から不適当であり、ある程度練りだめができ、且つ材令の進行ならびに加圧に応じて強度が増加する処理土が望ましい。例えば、いわゆるFe石灰系処理土として知られるものが適している。これは自然土や自然土と砕石に土質安定剤として、酸化鉄と石灰や、酸化アルミニウム，酸化鉄及び酸化チタンを主成分としたAl-Fe-Ti系酸化組成物又は酸化アルミニウム，酸化鉄及び酸化チタンの混合物と石灰や、酸化鉄を主成分とするFe系酸化混合物とCaO, SiO2, Al2O3を主成分として含む下水汚泥焼却灰と石灰を混合したものである。
【００２２】
そして、土嚢を所定箇所に平らに敷きつめた後に、各土嚢袋の吊り下げ部７を任意箇所で切断して結合ロープ１８とする。ついでこの切断した吊り下げ部７、すなわち結合ロープ１８を隣接する土嚢袋の吊り帯６の分離部９に結ぶ。吊り下げ部７を切断する箇所は吊り下げ部７の長さにより適当な箇所を選択すればよいが、切断した部分の両側（合計四本の結合ロープができることになる。）とも結合ロープ１８として使用したい場合には中央で切断し、片側（合計二本の結合ロープができることになる。）だけでよい場合はどちらかの袋体１の上面１３近傍で切断すればよい。なお、この隣接する土嚢の結合作業は、土嚢を全部敷設後に行ってもよいが、場合によっては敷設作業を行いながら順次並行して行ってもよい。これはそのときの作業環境や条件により任意に選択すればよい。
【００２３】
そして、このようにして図６に示すように土嚢袋を所望段数上下の土嚢が同軸上に位置するように積む。従来のように階段状に積み上げることも勿論可能であるが、土嚢の敷設面積と必要数を減らすために同軸上で垂直に積めることが本発明の土嚢袋の特徴である。ついで図７に示すように積んだ土嚢のうち任意箇所の土嚢袋について最上段の土嚢袋の上面開口部から最下段の土嚢袋の底面の透水性素材部を貫通するように支柱１９を打ち込む。支柱としては例えばＨ鋼を使用する。支柱１９は土嚢の積み上げ段数と土嚢敷設箇所の諸条件等により適当な本数と箇所を選択すればよい。
【００２４】
次に、本発明の土嚢袋を利用した盛土工法を図６及び図７に基づいて述べる。上記した方法により土嚢を図６に示すように必要段数積み上げる。そして図７に示すように、最外列の土嚢２０と間隔をあけて簡易壁として矢板２１を打ち込み、土嚢２０と矢板２１の間に裏込め土２２を投入する。また、積み上げた土嚢の内側に所望高さになるまで用土２３を盛土する。用土２３の土圧は土嚢により受け止めることが可能であり、その外側に施工する矢板２１は裏込め土２２の土圧だけを受け止めることができればよいので、矢板２１はそれほど本格的なものでなくてもよい。
【００２５】
なお、図示した例では簡易壁として矢板２１を打ち込む例を示したが、簡易壁は積んだ土嚢の外側の化粧的な意味もあり、上記したように土圧としては裏込め土２２の土圧だけを受け止めることができればよいので、矢板のように地盤に打ち込んで構築するもののほか、例えば建築用コンクリート積ブロック等のようなものを積み上げて構築してもよい。なお、図６に示すように支柱１９は使用しないで盛土することも可能である。
【００２６】
【発明の効果】
以上述べたように、この発明にかかる土嚢袋によれば、有底円筒状の袋体の底面中央部及び側面下方を所望面積透水性を有する素材で、そして他の部分は非透水性の素材で形成し、袋体側面外周に環状補強帯を所望間隔で所望数縫着し、Ｕ字形に曲げた２本の吊り帯の中央部分を吊り下げ部とし両側部分をそれぞれ等間隔で環状補強帯と直交するようにし、吊り帯は環状補強帯と交叉する部分で環状補強帯と縫着するとともに、底面中央部の透水性素材部とその周囲の非透水性素材部の境界に底面補強帯を縫着し吊り帯の各先端をこの底面補強帯に縫着したので、環状補強帯により高含水で重量が大きい内容物に対して側面の膨れを抑制でき土嚢を隙間なく敷きつめる作業を簡単に行えるとともに、底面補強帯とともに吊り上げ時や積み重ね時の袋の破断を防止でき、さらに底面部及び側面下部に透水性素材を使用することにより水分を多く含む土も積極的に利用することができる。また、吊り帯は土嚢設置後には隣接する土嚢との結束用材料として利用することができる。
【００２７】
さらに、上記に加え袋体の上面を透水性素材又は非透水性素材で塞ぎ、中央部分には放射状に切れ目を形成して投入口とするとともに、投入口部分の内側には内容物飛散防止用の布の一辺を縫着したので、投入口からの切れ目部分がホッパーの役割をして用土の投入が簡単に行える一方、投入口の内部に内容物飛散防止用の布を縫着しておくことにより、いったん中に入った用土が外に飛び出すのを防止できる。あるいは吊り下げ部の長さを、土嚢袋の直径の１．２倍〜３．０倍としたので、吊り下げ部は土嚢吊り上げ時にはその長さが不必要に長過ぎず、設置後に結合用の紐として利用するには隣接する土嚢に結ぶのに程よい長さを確保することができる。
【００２８】
また、この発明に係る土嚢袋設置方法によれば本発明の土嚢袋に用土を入れ土嚢を所定箇所に敷きつめた後に、各土嚢袋を吊り下げ部の任意箇所で切断し、この切断した吊り下げ部を隣接する土嚢袋の吊り帯部分に結んで土嚢を一体化するようにしたので、隣合う土嚢を確実に連結することができ、土嚢の転倒を防止でき構造的に安定性を確保でき、したがって土嚢を階段状にずらさず垂直に積み上げることが可能となる。
【００２９】
さらに、前記の方法により本発明の土嚢袋を所望段数上下の土嚢が同軸上に位置するように積み、積んだ土嚢のうち任意箇所の土嚢袋について最上段の土嚢袋の上面開口部から最下段の土嚢袋の底面の透水性素材部を貫通するように支柱を打ち込んだので、土嚢を階段状にずらさないで垂直に積んだ結果支柱を土嚢中央を串刺しするように貫通させることができ、土嚢の垂直方向の安定性をさらに高めることができる。
【００３０】
一方、この発明に係るも盛土工法によれば、前記の方法により土嚢を設置し、最外列の土嚢と間隔をあけて簡易壁を構築し、土嚢と簡易壁の間に裏込め土を投入するとともに、積み上げた土嚢の内側に所望高さになるまで用土を盛土するようにしたので、従来の土嚢を階段状に積み上げた方法に比べ、同じ高さ土嚢を積み上げるのに土嚢の設置面積及び必要土嚢数を減らすことができるとともに、簡易壁は盛土の土圧を殆ど受けないので土嚢の外側は簡易な方法で構築することが可能となる。
【図面の簡単な説明】
【図１】本発明の土嚢袋の正面図である。
【図２】本発明の土嚢袋の底面図である。
【図３】本発明の土嚢袋の平面図である。
【図４】本発明の土嚢設置工法を示す正面説明図である。
【図５】本発明の土嚢設置工法を示す平面説明図である。
【図６】本発明の盛土工法の実施例を示す説明図である。
【図７】本発明の盛土工法の他の実施例を示す説明図である。
【符号の説明】
１袋体
２底面中央部
３側面下方部
４他の部分
５環状補強帯
６吊り帯
７吊り下げ部
８交叉部
９分離部
１０非透水性素材部
１１底面補強帯
１２先端
１３上面
１４切れ目
１５投入口
１６布
１７絞り紐
１８結合ロープ
１９支柱
２０土嚢
２１矢板
２２裏込め土
２３用土[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a large sandbag that can be applied to embankments and the like, and has high strength as a whole and can be used regardless of the state of the soil to be put inside. . In addition, what is referred to as soil in the present application includes dredged sand, sludge, construction residual soil, and the like. Furthermore, the present invention relates to a sandbag installation method and a banking method using the sandbag according to the present invention.
[0002]
[Prior art]
Conventionally, there are large-sized bag-like sandbags, but these are mainly used for transporting materials and feed rather than using as sandbags.
[0003]
[Problems to be solved by the invention]
Therefore, the conventional one has problems in strength and long-term durability. Although it is in time for emergency use at the time of disaster recovery etc., there are problems in using it as a permanent structure, and there are also inconveniences in usability.
[0004]
That is, since the structure is not intended for long-term durability, its strength is not sufficient for use as a sandbag for use in banking or the like. Further, in the case of using a high water content soil or the like, the material and structure of the bag is not taken into consideration with respect to water permeability, so the moisture in the bag is not quickly discharged to the outside and is not stable.
[0005]
On the other hand, when conventional large sandbags are used for high embankments, there is a fear of falling or collapsing because there is no bonding force between the sandbags installed, so it is difficult to pile up the sandbags, In order to prevent collapse, sandbags need to be stacked in the vertical direction instead of being stacked vertically, and as a result, a vertical slope cannot be formed.
[0006]
[Means for Solving the Problems]
In other words, in order to apply large sandbags to embankments, the bags as a whole have sufficient strength, consider the material of the bags so that the water in the soil can be quickly drained, and do not fall or collapse after installation. To prevent this, it is necessary to be able to easily connect adjacent sandbags. Furthermore, in order to be able to lay the sandbags without gaps, it is necessary to have a structure that keeps the cylindrical shape as much as possible without causing the bag to swell due to the soil put in.
[0007]
In addition, in order to be stable even when several sandbags are stacked, not only the adjacent sandbags are joined, but also a support made of H steel or the like that penetrates the stacked sandbags up and down is easily hit. It is necessary to have a structure that can be filled.
[0008]
Therefore, in order to solve the above-mentioned problem, the sandbag according to the present invention is made of a material having a desired area water permeability at the bottom center part and the lower side of the bottomed cylindrical bag body, and the other part is non-permeable. It is made of a material, and a desired number of annular reinforcing bands are sewn on the outer periphery of the side of the bag body. The central part of the two hanging bands bent in a U-shape is the hanging part, and both side parts are annularly reinforced at equal intervals. The suspension band is sewn to the annular reinforcement band at the intersection of the annular reinforcement band, and the bottom reinforcement band is formed at the boundary between the water permeable material part at the center of the bottom and the surrounding non-permeable material part. And each end of the suspension band is sewn to the bottom reinforcing band.
[0009]
Alternatively, in addition to this, the upper surface of the bag body is closed with a water-permeable material or a non-water-permeable material, and a radial cut is formed in the central portion to form an input port, and the content inside the input port portion is for preventing scattering of contents. One side of the cloth is sewn, and the length of the hanging part is 1.2 to 3.0 times the diameter of the sandbag.
[0010]
In addition, the sandbag installation method according to the present invention is that the soil is placed in the sandbag bag of the present invention, and the sandbag is spread or laid at a predetermined location, and then the hanging portion of each sandbag bag is cut at an arbitrary location and the cut suspension The sandbag is integrated by tying the part to the hanging band part of the adjacent sandbag, and the sandbag is stacked so that the upper and lower sandbags of the desired number of stages are located on the same axis by the above method. For the sandbag at the location, a support is driven so as to penetrate the water permeable material part at the bottom of the bottom sandbag from the upper surface opening of the top sandbag.
[0011]
On the other hand, in the embankment method according to the present invention, the sandbags are installed by the above-mentioned method, a simple wall is constructed with an interval from the outermost sandbags, and backfill soil is put between the sandbags and the simple walls and stacked. The soil is filled up to the desired height inside the sandbag.
[0012]
[Action]
Even if high-moisture soil is introduced into the sandbag by using a non-permeable material in the center and bottom side of the bottom of the sandbag, moisture is formed with this water-permeable material due to the weight of the soil. It is easily discharged from the part.
[0013]
In addition, since the annular reinforcing band is sewn on the cylindrical part of the bag and the bottom reinforcing band is sewn on the bottom part, the bag as a whole has extremely high strength, and the hanging band has these annular reinforcing band and bottom reinforcing band. Since it is connected, it is possible to prevent the bag from being damaged by the weight of the soil inside when the sandbag is lifted.
[0014]
Further, after the installation, by cutting the suspension part in the middle, it is possible to connect to the hanging band of the adjacent sandbag by using the cut suspension part, and the fall and collapse after the sandbag installation can be prevented. Further, a pillar such as H steel can be easily driven vertically by using the center of the bottom formed of the inlet and the water-permeable material, and the stability of the sandbag at the time of embankment can be further enhanced. On the other hand, most of the earth pressure of the embankment can be received by the sandbag, and a simple wall for makeup can be constructed on the outside of the sandbag by a concrete building block or a sheet pile for construction.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of a sandbag according to the present invention will be described with reference to FIGS.
Reference numeral 1 denotes a bottomed cylindrical bag body, and the bottom center part 2 and the side lower part 3 are made of a material having a desired area water permeability. And the other part 4 of the bag body 1 is formed with the non-permeable material. For example, a net-like material can be used as the non-permeable material, but the other bag body 1 is made of polypropylene, and the bottom center portion 2 and the side lower portion 3 are not waterproofed. You may make it water-impermeable by waterproofing. Moreover, the location formed with a water-impermeable material is not limited to the area and location shown in the figure, and it is sufficient that moisture can be quickly discharged from the lower side of the bag body 1.
[0016]
A desired number of annular reinforcing bands 5 are sewn on the outer periphery of the bag body at desired intervals. In the example shown in the figure, an example is shown in which the bottom of the side and the upper end are slightly spaced and sewn at regular intervals, but these may be selected as appropriate depending on the size of the bag and the like. Further, instead of sewing, it may be bonded by an adhesive or may be fixed by a method such as heat welding depending on the material of the annular reinforcing band 5 and the bag body 1. The material of the annular reinforcing band 5 may be made of synthetic fiber or natural fiber as long as it has a certain tensile strength. In addition, for example, in the illustrated example (the bag body 1 is made of polypropylene and both the diameter and the height are 110 cm), the width of the annular reinforcing band 5 is 10 cm, and the bottom of the side surface of the bag body 1 is The top ends are separated by 10 cm and are equally spaced.
[0017]
Reference numeral 6 denotes two suspension bands bent in a U-shape, and the central part thereof is a suspension part 7. The both side portions are made to be orthogonal to the annular reinforcing band 5 at equal intervals (at intervals of ¼ circumference of the circumference in the bottom view of FIG. 3), and the suspension band 6 is a crossing portion 8 orthogonal to the annular reinforcing band 5. It is sewn to the annular reinforcing band 5. That is, the suspending band 6 is separated from the bag body 1 except for the crossing part 8 that crosses the annular reinforcing band 5, and can be combined with the adjacent sandbag using this separating part 9 as described later.
[0018]
Further, a bottom reinforcing band 11 is sewn to the boundary between the water permeable material portion at the bottom center portion 2 and the non-water permeable material portion 10 around it. Each end 12 of the suspension band 6 is sewn to the bottom reinforcing band 11. In addition, the length of the suspension part 7 of the suspension band 6 is 1.2 to 3.0 times the diameter of the bag body 1. As will be described later, the hanging portion 7 is cut and convenient after being installed and used as a connecting rope. However, if it is too long, the sandbag must be lifted unnecessarily at the time of sandbag installation work. Since the work efficiency is deteriorated, it is appropriate to set the length to the above as a compromise.
[0019]
The upper surface 13 of the bag body 1 is closed with a water-permeable material or a non-water-permeable material as necessary, and a slit 14 is formed radially at the center portion to serve as an inlet 15. Two cloths 16 sized to block the charging port 15 so as to sandwich the charging port 15 to prevent scattering of contents are placed inside the charging port 15 part, and each side of the upper surface 13 is an end of the charging port 15. It is sewn on. Then, the string 17 is passed through the tip of the radial cut 14 on the upper surface 13, and the opening that is the input port 15 in a purse-like shape can be narrowed. That is, the insertion port 15 is closed by three pieces of material, that is, two cloths 16 for preventing the contents from scattering and the upper surface 13 of the bag body 1 that can be narrowed in a purse-like manner.
[0020]
Next, a sandbag installation method using the sandbag bag of the present invention will be described with reference to FIGS.
The above-mentioned sandbag bag inlet 15 is opened and a suitable soil is put therein. Since the drainage in the sandbag is also taken into consideration, it can be used even when the moisture content is high. Then, after the earth and sand are put in the sandbag bag, the string 17 is squeezed to narrow the insertion port 15. The operation up to this point may be performed at the sandbag installation location, or may be performed at other locations.
[0021]
In addition to the various types of earth and sand as mentioned above, the soil to be put in the sandbag bag may be a case where the sandbag bag is damaged due to weather such as rainfall or sunshine or other external factors, or construction of a permanent structure. Considering it, it is desirable to use stable soil. However, fast-stiffened soil that hardens before the sandbag is installed, such as cement-stabilized soil, is inappropriate from the standpoint of stability and can be squeezed to some extent, and the progress of material age In addition, a treated soil whose strength increases with pressure is desirable. For example, what is known as so-called Fe lime-based treated soil is suitable. This is a soil stabilizer for natural soil, natural soil and crushed stone, Al-Fe-Ti-based oxide composition mainly composed of iron oxide and lime, aluminum oxide, iron oxide and titanium oxide or aluminum oxide, iron oxide and It is a mixture of titanium oxide and lime, Fe-based oxidation mixture mainly composed of iron oxide, sewage sludge incinerated ash and lime mainly composed of CaO, SiO2, Al2O3.
[0022]
Then, after sandbags are laid flat at predetermined locations, the hanging portions 7 of the sandbag bags are cut at arbitrary locations to form a connecting rope 18. Then, the cut suspending portion 7, that is, the connecting rope 18, is tied to the separating portion 9 of the adjacent sandbag suspending band 6. The portion for cutting the suspension part 7 may be selected according to the length of the suspension part 7, but both sides of the cut part (a total of four coupling ropes are formed) as coupling ropes 18. When it is desired to use it, it is cut at the center, and when only one side (a total of two connecting ropes can be formed) is required, it may be cut near the upper surface 13 of one of the bags 1. The adjacent sandbag joining operation may be performed after all the sandbags are laid, but in some cases, the sandbags may be sequentially performed in parallel while performing the laying work. This may be arbitrarily selected according to the working environment and conditions at that time.
[0023]
In this way, as shown in FIG. 6, the sandbags are stacked so that the desired number of upper and lower sandbags are located on the same axis. Of course, it is possible to stack in a stepped manner as in the prior art, but it is a feature of the sandbag bag of the present invention that the sandbags can be stacked vertically on the same axis in order to reduce the laying area and the required number of sandbags. Next, as shown in FIG. 7, the column 19 is driven so as to penetrate the water permeable material part on the bottom surface of the lowermost sandbag bag from the upper surface opening part of the uppermost sandbag bag with respect to the sandbag bag at any place among the stacked sandbags. For example, H steel is used as the support. An appropriate number and location of the support columns 19 may be selected according to the number of stacked sandbags and various conditions of the location where the sandbag is laid.
[0024]
Next, the embankment method using the sandbag of the present invention will be described with reference to FIGS. The sandbags are piled up by the above method as shown in FIG. Then, as shown in FIG. 7, the sheet pile 21 is driven as a simple wall with a space from the outermost sandbag 20, and the backfill soil 22 is inserted between the sandbag 20 and the sheet pile 21. In addition, the soil 23 is filled up to the desired height inside the piled sandbags. The earth pressure of the working soil 23 can be received by the sandbag, and the sheet pile 21 to be constructed on the outside of the soil 23 only needs to be able to receive the earth pressure of the backfill soil 22, so the sheet pile 21 is not so serious. Also good.
[0025]
In the illustrated example, the sheet pile 21 is driven as a simple wall. However, the simple wall also has a cosmetic meaning outside the piled sandbag, and as described above, the earth pressure of the backfill soil 22 is used as the earth pressure. Therefore, in addition to what is built by driving into the ground like a sheet pile, it may be constructed by stacking things such as concrete building blocks for construction. In addition, as shown in FIG. 6, the support | pillar 19 can also be embanked without using it.
[0026]
【The invention's effect】
As described above, according to the sandbag according to the present invention, the bottom center portion and the lower side of the bottomed cylindrical bag body are made of a material having a desired area water permeability, and the other portions are non-permeable materials. A ring reinforcement band is formed on the outer periphery of the bag body at a desired interval and sewn in a desired number. The central part of the two suspension bands bent in a U-shape is used as a hanging part, and both side parts are formed at equal intervals. The suspension band is sewn to the annular reinforcement band at the intersection of the annular reinforcement band, and the bottom reinforcement band is attached to the boundary between the water-permeable material part at the center of the bottom and the surrounding non-permeable material part. Since each end of the suspending band is sewn and sewn on this bottom reinforcing band, the annular reinforcing band can suppress the bulging of the side surface against high moisture content and heavy weight, making it easy to lay the sandbag without any gaps Can be lifted and stacked with bottom reinforcement band Rupture of the bag can be prevented, it is possible to soil containing much moisture aggressively utilized by using a more permeable material on the bottom surface and the lower side. In addition, the suspension band can be used as a material for binding with an adjacent sandbag after the sandbag is installed.
[0027]
In addition to the above, the upper surface of the bag body is closed with a water-permeable material or a non-water-permeable material, and a radial cut is formed in the center portion to form an input port, and the content inside the input port portion is for preventing scattering of contents. Since one side of the cloth is sewn, the cut portion from the inlet serves as a hopper, making it easy to put in the soil, while sewing the cloth to prevent the contents from scattering inside the inlet. By doing this, it is possible to prevent the soil once inside from jumping out. Or since the length of the hanging part is 1.2 to 3.0 times the diameter of the sandbag, the length of the hanging part is not too long when the sandbag is lifted. In order to use as a string, a moderate length can be secured for tying to an adjacent sandbag.
[0028]
Further, according to the sandbag bag installation method according to the present invention, after putting the soil into the sandbag bag of the present invention and laying the sandbag in a predetermined place, each sandbag bag is cut at an arbitrary position of the hanging portion, and the cut hanging Since the sandbag was integrated by tying the part to the hanging band part of the adjacent sandbag bag, the adjacent sandbags can be securely connected, the sandbag can be prevented from falling, and structural stability can be ensured, Therefore, the sandbags can be stacked vertically without shifting in a staircase pattern.
[0029]
Furthermore, the sandbags of the present invention are stacked by the above-described method so that the upper and lower sandbags of the desired number of stages are located on the same axis, and the sandbags at arbitrary positions among the stacked sandbags from the upper surface opening of the uppermost sandbag. Since the struts were driven so as to penetrate the permeable material part of the bottom of the sandbag, the sandbags were stacked vertically without shifting in steps, so that the struts could be penetrated to skewer the sandbag center. The vertical stability can be further improved.
[0030]
On the other hand, according to the embankment method according to the present invention, a sandbag is installed by the above-mentioned method, a simple wall is constructed with a space from the outermost sandbag, and backfilling soil is inserted between the sandbag and the simple wall. In addition, since the soil was filled up to the desired height inside the piled sandbags, compared to the conventional method of piled up sandbags in steps, the sandbag installation area and The number of necessary sandbags can be reduced, and the simple wall hardly receives the earth pressure of the embankment, so that the outside of the sandbag can be constructed by a simple method.
[Brief description of the drawings]
FIG. 1 is a front view of a sandbag of the present invention.
FIG. 2 is a bottom view of the sandbag of the present invention.
FIG. 3 is a plan view of a sandbag of the present invention.
FIG. 4 is an explanatory front view showing the sandbag installation method of the present invention.
FIG. 5 is an explanatory plan view showing the sandbag installation method of the present invention.
FIG. 6 is an explanatory view showing an embodiment of the embankment method according to the present invention.
FIG. 7 is an explanatory view showing another embodiment of the embankment method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bag body 2 Bottom center part 3 Side lower part 4 Other parts 5 Annular reinforcement band 6 Suspension band 7 Suspension part 8 Crossing part 9 Separation part 10 Non-permeable material part 11 Bottom reinforcement band 12 Tip 13 Upper surface 14 Break 15 Input Mouth 16 Cloth 17 Wrapped string 18 Joining rope 19 Strut 20 Sandbag 21 Sheet pile 22 Backfill soil 23 Soil

Claims

有底円筒状の袋体の底面中央部及び側面下方を所望面積透水性を有する素材で、そして他の部分は非透水性の素材で形成し、袋体側面外周に環状補強帯を所望間隔で所望数縫着し、Ｕ字形に曲げた２本の吊り帯の中央部分を吊り下げ部とし両側部分をそれぞれ等間隔で環状補強帯と直交するようにし、吊り帯は環状補強帯と交叉する部分で環状補強帯と縫着するとともに、底面中央部の透水性素材部とその周囲の非透水性素材部の境界に底面補強帯を縫着し吊り帯の各先端をこの底面補強帯に縫着したことを特徴とする土嚢袋。The bottom central part and bottom side of the bottomed cylindrical bag are made of a material having a desired area water permeability, and the other part is made of a water-impermeable material. The center part of the two suspension bands that are sewn in the desired number and bent into a U-shape is the suspension part, so that both sides are perpendicular to the annular reinforcement band at equal intervals, and the suspension band intersects the annular reinforcement band At the same time, the bottom reinforcing band is sewn to the boundary between the water-permeable material part at the center of the bottom and the non-permeable material part around it, and each end of the suspension band is sewn to this bottom reinforcing band. A sandbag bag characterized by that.

袋体の上面を透水性素材又は非透水性素材で塞ぎ、中央部分には放射状に切れ目を形成して投入口とするとともに、投入口部分の内側には内容物飛散防止用の布の一辺を縫着した請求項１記載の土嚢袋。The upper surface of the bag body is closed with a water-permeable material or a non-water-permeable material, and a slit is radially formed in the central portion to form an inlet, and one side of the cloth for preventing content scattering is placed inside the inlet portion. The sandbag bag according to claim 1, which is sewn.

吊り下げ部の長さを、土嚢袋の直径の１．２倍〜３．０倍とした請求項１または請求項２記載の土嚢袋。The sandbag bag according to claim 1 or 2, wherein the length of the hanging part is 1.2 to 3.0 times the diameter of the sandbag bag.

請求項１記載の土嚢袋に用土を入れ土嚢を所定箇所に敷きつめつつ又は敷きつめた後に、各土嚢袋を吊り下げ部の任意箇所で切断し、この切断した吊り下げ部を隣接する土嚢袋の吊り帯部分に結んで土嚢を一体化するようにしたことを特徴とする土嚢設置方法。After putting the soil into the sandbag bag according to claim 1 and spreading the sandbag at a predetermined position, each sandbag bag is cut at an arbitrary portion of the hanging portion, and the cut hanging portion is suspended by the adjacent sandbag bag. A sandbag installation method characterized in that the sandbag is integrated by tying to the belt portion.

請求項４記載の方法により請求項１記載の土嚢袋を所望段数上下の土嚢が同軸上に位置するように積み、積んだ土嚢のうち任意箇所の土嚢袋について最上段の土嚢袋の上面開口部から最下段の土嚢袋の底面の透水性素材部を貫通するように支柱を打ち込んだことを特徴とする土嚢設置方法。5. The method according to claim 4, wherein the sandbags according to claim 1 are stacked such that a desired number of upper and lower sandbags are coaxially positioned, and an upper surface opening of the uppermost sandbag with respect to the sandbags at arbitrary locations among the stacked sandbags A sandbag installation method, wherein a strut is driven so as to penetrate the water-permeable material portion on the bottom of the bottom sandbag.

請求項５記載の方法により土嚢を設置し、最外列の土嚢と間隔をあけて簡易壁を構築し、土嚢と簡易壁の間に裏込め土を投入するとともに、積み上げた土嚢の内側に所望高さになるまで用土を盛土するようにしたことを特徴とする盛土工法。A sandbag is installed by the method according to claim 5, a simple wall is constructed with a space from the outermost sandbag, backfill soil is put between the sandbag and the simple wall, and a desired inside of the piled sandbag is desired. An embankment method characterized by embedding the soil until the height is reached.