JP3763110B2

JP3763110B2 - Rehabilitation concrete block for revegetation and revetment revegetation method for levee slope using the block

Info

Publication number: JP3763110B2
Application number: JP27855397A
Authority: JP
Inventors: 剛堀口; 清子高久; 英壽萩原
Original assignee: Taiheiyo Cement Corp
Current assignee: Taiheiyo Cement Corp
Priority date: 1997-10-13
Filing date: 1997-10-13
Publication date: 2006-04-05
Anticipated expiration: 2017-10-13
Also published as: JPH11117259A

Description

【０００１】
【発明の属する技術分野】
本発明は、主として、河川、湖沼等の岸辺の緑化及び護岸に用いる緑化護岸用コンクリートブロック及び該ブロックを用いた堤防法面の護岸緑化方法に関する。
【０００２】
【従来の技術】
従来、河川の堤防の護岸には、法面をコンクリートブロックや場所打ちコンクリート等のコンクリート構造物によって覆う構造のものや、法面に草類を植生し、根の土壌緊縛力によって表面を強化するとともに、緑化する構造のものが採用されており、高水護岸、即ち、異常時の増水によってしか水流に洗われることのない部分の護岸には、地山表面に直接的に植生を施すか、法面に設置した法枠等のコンクリート構造物の上面に盛り上げた客土に植生を施す方法が採用されている。
【０００３】
【発明が解決しようとする課題】
上述の如き、従来の高水護岸構造にあって、植生を施したものにおいては、通常時は緑化がなされた状態が維持されるが、特に、コンクリート構造物の表面に客土を施して植生したものにあっては、客土とともに植生が剥れ易く、台風等の異常増水時に流失するという問題があった。
【０００４】
また、地山に直接的に草類を植生したものにあっては、コンクリート構造物による被覆に比べて護岸機能が低いという問題があった。
【０００５】
本発明は、このような従来の問題に鑑み、特に、高水護岸においても、護岸機能が高く、かつ、植生が非常時の増水によっても流失されず、緑化が維持される緑化護岸用コンクリートブロック及び該ブロックを用いた堤防法面の護岸方法の提供を目的としたものである。
【０００６】
【課題を解決するための手段】
上述の如き従来の問題を解決し、所期の目的を達成するための請求項１に記載の発明の特徴は、植物の根が貫通可能な連続空隙を有するポーラスコンクリートからなる版状のブロック本体の上面に、植生用の客土が収容できる方形状をした複数のポット状の凹陥部を備えるとともに、該ブロック本体の前後の側面に互いに隣り合わせに接合したブロック間において互いに嵌り合う形状の段部を備え、かつブロック本体の側面と該側面側の凹陥部間に連結ボルト挿入用の貫通孔を備えてなる緑化護岸用コンクリートブロックにある。
請求項２に記載の発明の特徴は、植物の根が貫通可能な連続空隙を有するポーラスコンクリートからなる版状のブロック本体の上面に、植生用の客土が収容できる方形状をした複数のポット状の凹陥部を備えるとともに、該ブロック本体の前後の側面に、互いに前後の隣り合わせに接合されるブロック間において互いに嵌り合う形状の段部を備え、かつブロック本体の側面と該側面側の凹陥部間に連結ボルト挿入用の貫通孔を備えてなる緑化護岸用コンクリートブロックを使用し、該緑化護岸用コンクリートブロックを前後左右に並べて河川等の堤防の法面を覆うように敷設し、前後の前記緑化護岸用コンクリートブロック間においては前記段部を互いに嵌り合わせ、かつ前後左右の緑化護岸用コンクリートブロック間において互いに隣り合うブロック側面に設けられている前記貫通孔間に連結ボルトをまたがらせて挿入して各ブロック間を固定し、前記各緑化護岸用コンクリートブロックのポット状の凹陥部に客土を収容し、該客土内に草類を植生することを特徴としてなる堤防法面の護岸緑化方法にある。
請求項３に記載の発明の特徴は、前記請求項２の構成に加え、凹陥部内に収容した客土及び又はブロック本体内の空隙内に充填した客土内に、草類の種子を含ませ、該種子の発芽、成育によって植生することにある。
【０００７】
尚、凹陥部内に収容した客土及び又はブロック本体内の空隙内に充填した客土内に、草類の種子を含ませ、該種子の発芽、成育によって植生することが好ましい。
【０００８】
【作用】
本発明の緑化護岸用コンクリートブロックの使用に際しては、堤防等の護岸を施すための地山面にこれを並べて設置し、法面を多数のコンクリートブロックにて覆う。これによって、コンクリートブロックの重量により地山の崩落及び流失が防がれる。
【０００９】
ブロックの設置に先立ち、ブロック本体の連続空隙内に客土や草類の種子及び肥料を充填しておくか、該ブロックを敷設した後、ポット状凹陥部内に客土を詰め、草類の種子や苗を植え付ける。
【００１０】
このようにして植え付けられた草類は、ポット状凹陥部内に根を張って客土を緊縛するとともに、ブロック本体の連続空隙内に伸長し、ブロック本体と一体化する。更に、根が伸びてブロック本体を貫通し、裏面の地山内に伸びて地山を緊縛することにより、ブロック本体が地山に強固に定着されるとともに、地山を根の緊縛力によって強化する。
【００１１】
【発明の実施の形態】
次に本発明の実施の形態を図面に示す実施例について説明する。
【００１２】
図１〜図４は、本発明の第１実施例の緑化護岸用コンクリートブロックＡを示している。
【００１３】
図において１は、正方形の版状をしたブロック本体である。このブロック本体１は、草類の根が伸長可能な連続空隙を有するポーラスコンクリートにより成形されている。ポーラスコンクリートは、ペースト状のセメントモルタルを結合材とし、これを粗骨材である砕石にまぶした状態の混練物を型に入れ、必要な振動を加え、締め、各粗骨材間を結合材にて一体化させたものであり、各粗骨材間に連続した空隙が形成されている。また、粗骨材の大きさ及び結合材の量を選定することにより、空隙の大きさを草類の根がその内部を伸長できるものとしている。
【００１４】
ブロック本体の上面には、方形状をした複数の凹陥部２、２…が格子状配置に形成されている。この凹陥部の大きさ及び深さ及びブロック本体の厚さは用途に応じて適宜変更する。
【００１５】
ブロック本体１の前後の側面は、互いに隣り合わせに接合したブロック間において、互いに嵌り合う形状の段部が形成され、一方の側面には下側に張り出し部３が一体成形され、他方の側面には上側に張り出し部４が一体成形されている。
【００１６】
また、ブロック本体１の各側面側の凹陥部２、２…と各側面間には、連結ボルト挿入用の貫通孔５、５…が形成されている。
【００１７】
次にこのように構成される緑化護岸用コンクリートブロックＡを使用した護岸緑化方法について説明する。
【００１８】
図５は、緑化護岸用ブロックＡを河川の堤防の高水護岸に用いた例を示しており、図において１０は、堤防の非常増水時に冠水予想される高さの地山であり、その表面に前述したブロックＡを前後左右、即ち堤防の傾斜に沿った上下左右に並べ、地山１０の表面を覆うように敷設する。そして、互いに隣り合うブロックＡ、Ａ……の貫通孔５、５にまたがらせ、即ち、前後左右のブロックＡ，Ａ間において互いに隣り合うブロック側面に設けられている貫通孔５，５に連結ボルト６をまたがらせて挿入し、互いに隣り合うブロックＡ，Ａ間を固定する。また、前後側のブロックＡ、Ａ間の接合は前述した段部を互いに嵌め合わせて設置する。
【００１９】
次いで、各ブロックＡ、Ａ…の凹部陥部２、２…内に客土７を充填し、その中に草類の種子を植える。種子の植え付けは、客土７内に予め種子を肥料とともに混入させておいてもよく、客土７の充填後に植え付けてもよい。
【００２０】
また、各ブロックＡの設置に先立ち、ブロック本体１の連続空隙内に客土及び種子を予め充填しておき、これを地山１０の表面上に設置してもよい。
【００２１】
このようにして、ブロックＡの敷設、種子の植え付けの後、種子が発芽し、成長することにより、根が凹陥部２内に張って、客土７を緊縛するとともに、ブロック本体１の空隙内に侵入してブロック本体１と一体化する。更に、空隙を貫通してブロック本体１の下面にまで根が伸長し、地山１０内に伸びて地山土砂を緊縛し、地山１０とブロック本体１とを一体化させる。
【００２２】
【発明の効果】
上述したように、本発明においては、植物の根が貫通可能な連続空隙を有するポーラスコンクリートからなる版状のブロック本体の上面に、植生用の客土が収容できる方形状をした複数のポット状の凹陥部を備えるとともに、該ブロック本体の前後の側面に、互いに前後の隣り合わせに接合されるブロック間において互いに嵌り合う形状の段部を備え、かつブロック本体の側面と該側面側の凹陥部間に連結ボルト挿入用の貫通孔を備えてなる緑化護岸用コンクリートブロックを、前後間においては前記段部を互いに嵌り合わせ、左右間においては前記貫通孔に連結ボルトをまたがらせて挿入して両者間を固定して、前記河川等の堤防の法面を覆うように並べて敷設することによって法面を覆うことにより、ブロック自体の重量によってその流失が防止されるとともに、そのブロック本体の凹陥部及び空隙内に草類を植生させることにより、その根がブロック本体下面の地山に達し、地山とブロック本体とを一体化させて、ブロックによる護岸機能が高められる。
【００２３】
植生された草類は、ブロックの曲りくねった空隙内に根が侵入することにより、ブロックと一体化し、容易に抜け出なくなり、非常増水時においても流失せずに、緑化及び護岸機能が維持される。
【図面の簡単な説明】
【図１】本発明に係るブロックの一例の平面図である。
【図２】図１中のＡ−Ａ線断面図である。
【図３】図１中のＢ−Ｂ線断面図である。
【図４】図１中のＣ−Ｃ線断面図である。
【図５】本発明の護岸緑化方法の一例の断面図である。
【符号の説明】
Ａ緑化護岸用コンクリートブロック
１ブロック本体
２凹陥部
３張り出し部
４張り出し部
５貫通孔
６連結ボルト
７客土
１０地山[0001]
BACKGROUND OF THE INVENTION
The present invention mainly relates to a concrete block for greening and revetment used for revegetation and revetment of riversides, lakes, and the like, and a revetment revegetation method for a dike slope using the block.
[0002]
[Prior art]
Conventionally, riverbank embankments have a structure where the slope is covered with concrete structures such as concrete blocks and cast-in-place concrete, and grass is vegetated on the slope and the surface is strengthened by the soil binding force of the roots. In addition, the structure of greening is adopted, and the high water revetment, that is, the revetment of the part that is washed only by the water flow at the time of abnormality is directly vegetated on the surface of the natural mountain, A method has been adopted in which vegetation is applied to the customer soil raised on the upper surface of a concrete structure such as a frame installed on the slope.
[0003]
[Problems to be solved by the invention]
As described above, in the conventional high water revetment structure, the vegetation is usually maintained in a greened state. However, there was a problem that the vegetation was easily peeled off along with the soil, and it was washed away during an abnormal water increase such as a typhoon.
[0004]
Moreover, there was a problem that the revetment function was low in the case where grass was directly vegetated on the ground, compared to the covering with concrete structure.
[0005]
In view of such a conventional problem, the present invention provides a concrete block for revegetation revetment that has a high revetment function even in a high water revetment, and that is not lost by vegetation due to increased water in an emergency, and is maintained green. The purpose is to provide a bank protection method for the dike slope using the block.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems and achieve the intended purpose, the invention according to claim 1 is characterized in that a block-shaped block body made of porous concrete having continuous voids through which plant roots can penetrate. A plurality of pot-shaped recesses having a square shape that can accommodate the vegetation soil is provided on the upper surface of the block, and stepped portions that are fitted to each other between the blocks joined next to the front and back side surfaces of the block body. And a concrete block for greening revetment comprising a through hole for inserting a connecting bolt between the side surface of the block main body and the recessed portion on the side surface side .
A feature of the invention described in claim 2 is that a plurality of pots having a rectangular shape capable of accommodating vegetation soil on the upper surface of a plate-shaped block body made of porous concrete having continuous voids through which plant roots can penetrate. And a stepped portion having a shape that fits between the blocks joined to each other adjacent to each other on the front and back sides of the block body, and the side surfaces of the block body and the recessed portions on the side surface side. Using a concrete block for greening revetment provided with a through hole for inserting a connecting bolt in between , laying the greening revetment concrete blocks side by side to cover the slope of a river bank, etc. The above-mentioned steps are fitted to each other between the greening revetment concrete blocks and adjacent to each other between the front, back, left and right concrete blocks for greening revetment Insert allowed straddle the connecting bolt between the through hole provided in the block side is fixed between the respective blocks, accommodating the soil dressing the the recess cup-shaped in each planting revetment concrete block, the There is a revetment greening method on the dike slope, which is characterized by vegetation in the soil.
According to a third aspect of the present invention, in addition to the structure of the second aspect, grass seeds are included in the soil contained in the recessed portion and / or the soil filled in the gap in the block body. It is to vegetate by germination and growth of the seeds.
[0007]
In addition, it is preferable to include grass seeds in the soil that is housed in the recesses and / or in the space that is filled in the gaps in the block body, and that the seeds germinate and grow.
[0008]
[Action]
When using the concrete block for greening revetment of the present invention, it is placed side by side on a natural ground surface for revetment such as a bank, and the slope is covered with a number of concrete blocks. As a result, the collapse of the natural ground and the runoff are prevented by the weight of the concrete block.
[0009]
Prior to the installation of the block, the soil and grass seeds and fertilizer are filled in the continuous voids in the block body, or after the block is laid, the soil is filled in the pot-shaped recessed portion and the grass seeds are filled. And plant seedlings.
[0010]
The grass planted in this manner is rooted in the pot-shaped concave portion to bind the customer soil, and extends into the continuous space of the block main body to be integrated with the block main body. Furthermore, by extending the root and penetrating the block body, and extending into the ground on the back and binding the ground, the block body is firmly fixed on the ground and the ground is strengthened by the binding force of the root. .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to examples shown in the drawings.
[0012]
1 to 4 show a concrete block A for greening revetment according to a first embodiment of the present invention.
[0013]
In the figure, reference numeral 1 denotes a block body having a square plate shape. The block body 1 is formed of porous concrete having continuous voids in which grass roots can extend. Porous concrete uses paste-like cement mortar as a binder, and then puts the kneaded material in a state where it is coated on crushed stone, which is coarse aggregate, into the mold, applies the necessary vibrations, tightens, and bonds between the coarse aggregates. And a continuous gap is formed between the coarse aggregates. In addition, by selecting the size of the coarse aggregate and the amount of the binder, the size of the gap is such that the roots of the grass can extend inside.
[0014]
On the upper surface of the block main body, a plurality of rectangular recesses 2, 2,... Are formed in a lattice arrangement. The size and depth of the recess and the thickness of the block body are appropriately changed according to the application.
[0015]
The front and back side surfaces of the block body 1 are formed with stepped portions that are fitted to each other between the blocks joined next to each other, the protruding portion 3 is integrally formed on one side surface, and the other side surface is formed on the other side surface. An overhang portion 4 is integrally formed on the upper side.
[0016]
Further, through holes 5, 5,... For inserting connecting bolts are formed between the recessed portions 2, 2,.
[0017]
Next, the revetment planting method using the concrete block A for revegetation constructed as described above will be described.
[0018]
FIG. 5 shows an example in which the greening revetment block A is used as a high water revetment on a river dike. In the figure, 10 is a natural ground whose height is expected to be flooded when the dike is inundated. The blocks A described above are arranged in the front, rear, left, and right directions, that is , up, down, left, and right along the slope of the embankment and are laid so as to cover the surface of the natural ground 10. And, it extends over the through holes 5, 5 of the blocks A, A... Adjacent to each other, that is, connected to the through holes 5, 5 provided on the side surfaces of the blocks adjacent to each other between the front , rear, left , and right blocks A, A. The bolt 6 is straddled and inserted, and the adjacent blocks A and A are fixed. Further, the joint between the front and rear blocks A and A is installed by fitting the above-mentioned stepped portions.
[0019]
Then, the soil 7 is filled in the recesses 2, 2,... Of each block A, A ..., and grass seeds are planted therein. For seed planting, seeds may be mixed with fertilizer in the soil 7 in advance, or may be planted after filling the soil 7.
[0020]
Prior to the installation of each block A, the soil and seeds may be filled in advance in the continuous space of the block main body 1 and installed on the surface of the natural ground 10.
[0021]
Thus, after laying block A and planting seeds, the seeds germinate and grow, so that the roots are stretched in the recessed portions 2 to bind the customer soil 7 and in the gaps in the block body 1. And is integrated with the block body 1. Further, the root extends through the gap to the lower surface of the block main body 1, extends into the natural ground 10, binds the natural ground earth and sand, and integrates the natural ground 10 and the block main body 1.
[0022]
【The invention's effect】
As described above, in the present invention, a plurality of pot shapes having a rectangular shape that can accommodate the vegetation soil on the upper surface of a plate-shaped block body made of porous concrete having continuous voids through which plant roots can pass. And the front and back side surfaces of the block main body are provided with stepped portions that are fitted to each other between the blocks that are joined adjacent to each other on the front and rear sides, and between the side surface of the block main body and the concave portion on the side surface side. A concrete block for greening revetment comprising a through-hole for inserting a connecting bolt is inserted into the front and rear sides by fitting the stepped portions to each other and between the left and right by inserting the connecting bolt across the connecting bolt. during fixing the, by covering the slope by laying side by side so as to cover the slopes of the embankment of the river, etc., the flow the weight of the block itself Is prevented, and the vegetation is vegetated in the recesses and gaps of the block main body, so that the root reaches the natural ground on the lower surface of the block main body, and the natural ground and the block main body are integrated. The revetment function is enhanced.
[0023]
The vegetated grass is integrated with the block by the root intruding into the tortuous voids of the block, so that it will not come out easily. .
[Brief description of the drawings]
FIG. 1 is a plan view of an example of a block according to the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a cross-sectional view taken along line BB in FIG.
4 is a cross-sectional view taken along line CC in FIG. 1. FIG.
FIG. 5 is a cross-sectional view of an example of the revetment greening method of the present invention.
[Explanation of symbols]
A Concrete block for greening revetment 1 Block body 2 Recessed part 3 Overhang part 4 Overhang part 5 Through hole 6 Connecting bolt 7 Customer soil 10 Ground

Claims

The block body includes a plurality of pot-shaped depressions having a rectangular shape capable of accommodating vegetation soil on the upper surface of a plate-shaped block body made of porous concrete having continuous voids through which plant roots can pass. A greening revetment comprising a stepped portion that fits between the blocks joined next to each other on the front and back side surfaces of the block, and a through hole for inserting a connecting bolt between the side surface of the block body and the recessed portion on the side surface side. Concrete block for use.

The block body includes a plurality of pot-shaped depressions having a rectangular shape capable of accommodating vegetation soil on the upper surface of a plate-shaped block body made of porous concrete having continuous voids through which plant roots can pass. The front and rear side surfaces are provided with stepped portions that are fitted to each other between the blocks that are joined next to each other in the front and rear direction, and a through hole for inserting a connecting bolt between the side surface of the block main body and the recessed portion on the side surface side. Using the concrete block for greening revetment , laying the greening revetment concrete blocks side by side to cover the slope of a river bank, etc., and between the front and back concrete blocks for greening revetment Are fitted to each other, and are provided on the side surfaces of the blocks adjacent to each other between the front, back, left and right concrete blocks for greening revetment Serial inserted by straddle the connecting bolt between the through hole and fixed between the respective blocks, accommodating the soil dressing the the recess cup-shaped in each planting revetment concrete block, the Kusarui to該客the soil A revetment greening method on a dike slope, characterized by vegetation.

The embankment slope according to claim 2, wherein grass seed is contained in the soil contained in the recessed portion and / or the soil filled in the space in the block body, and the seed is germinated and vegetated to grow. Revetment greening method.