JP4220419B2

JP4220419B2 - Revetment block, revetment structure and revetment construction method

Info

Publication number: JP4220419B2
Application number: JP2004072962A
Authority: JP
Inventors: 剛史亀山; 哲中尾; 功渡邉; 隆志上木; 一司十河
Original assignee: 日本興業株式会社
Priority date: 2004-03-15
Filing date: 2004-03-15
Publication date: 2009-02-04
Anticipated expiration: 2024-03-15
Also published as: JP2005256550A

Description

この発明は、河川、海岸、湖沼などの法面を保護する護岸ブロックおよび護岸構造ならびに護岸の構築方法に関するものである。 The present invention relates to a revetment block and a revetment structure for protecting slopes such as rivers, coasts, and lakes, and a revetment construction method.

従来より、河川、海岸、湖沼などの水辺の法面を水による浸食や崩壊から守るため、コンクリート製の張りブロックが広く採用されている。この張りブロック１０は、図１３に示すように、上方より見て正方形状の平板状ブロック体１１からなり、隣接する二つの側端面に係合凸部１１ａが形成されるとともに、隣接する他の二つの側端面に係合凸部１１ａに係合可能な係合凹部１１ｂが形成されて構成されている。 Conventionally, concrete upholstery blocks have been widely used to protect waterside slopes such as rivers, coasts, and lakes from water erosion and collapse. As shown in FIG. 13, the tension block 10 is composed of a flat plate-like block body 11 having a square shape when viewed from above, and an engaging convex portion 11a is formed on two adjacent side end surfaces, and other adjacent Engagement recesses 11b that can be engaged with the engagement projections 11a are formed on the two side end surfaces.

このような張りブロック１０によって河川や湖沼、海岸などの水辺の法面を保護する場合は、法面の最下段において、左右方向に対向する左右各側端面の係合凸部１１ａと係合凹部１１ｂを係合させて張りブロック１０を一端から他端にかけて順に据え付けた後、以下同様に、その上段から最上段にわたる各段において、左右方向に対向する左右各側端面の係合凸部１１ａと係合凹部１１ｂを係合させるとともに、前後方向に対向する前後各側端面の係合凸部１１ａと係合凹部１１ｂを係合させて張りブロック１０を一端から他端にかけて順に据え付けるものである。 When protecting the slopes of watersides such as rivers, lakes, and shores with such a tension block 10, the engagement protrusions 11 a and the engagement recesses on the left and right side end faces facing in the left-right direction are provided at the bottom of the slope. 11b is engaged, and the tension block 10 is installed in order from one end to the other end, and thereafter, in the same manner, in each stage from the upper stage to the uppermost stage, the engaging convex portions 11a on the left and right side end faces facing in the left-right direction The engaging recess 11b is engaged, and the tensioning block 10 is installed in order from one end to the other end by engaging the engaging protrusion 11a and the engaging recess 11b on the front and rear side end faces facing in the front-rear direction.

なお、張りブロック１０を敷設する場合、隣接する一対の張りブロック１０，１０の突き合わせ部がその下段の隣接する一対の張りブロック１０，１０の突き合わせ部と連続しないように、張りブロック１０を半ピッチずつずらした状態で敷設するようにしている。 When the tension block 10 is laid, the tension block 10 is half pitch so that the butted portion of the adjacent pair of tension blocks 10 and 10 is not continuous with the butted portion of the adjacent pair of tension blocks 10 and 10 in the lower stage. They are laid in a staggered state.

この張りブロック１０は、人々を水辺に誘うことができるように、上面に凹部が形成されているが、法面の勾配によっては歩行が困難となり、人命救助作業などを安全に行うことができないという欠点がある。このため、図１４に示すように、前述した張りブロック１０の平板状ブロック体１１と同一の平板状ブロック体１１の上面の一端縁に足をかけるためのステップ１２を設けて、歩行や人命救助作業などを安全に行うことができる張りブロック１０Ａも知られている（例えば、特許文献１参照）。 The upholstery block 10 has a concave portion formed on the upper surface so that people can be invited to the waterside, but depending on the slope of the slope, walking becomes difficult and lifesaving work cannot be performed safely. There are drawbacks. For this reason, as shown in FIG. 14, a step 12 for setting a foot on one end edge of the upper surface of the flat block body 11 identical to the flat block body 11 of the tension block 10 described above is provided for walking and lifesaving. A tension block 10 </ b> A that can safely perform work and the like is also known (see, for example, Patent Document 1).

しかしながら、このような張りブロック１０，１０Ａは、水辺の法面を保護する護岸機能や、人々を水辺に誘う歩行機能を有しているものの、表面がほぼ平滑に形成されており、魚介類の生態環境を改善したり、植栽を施すことはできない。 However, although these tension blocks 10 and 10A have a seawall function that protects the slope of the waterside and a walking function that invites people to the waterside, the surface is formed to be almost smooth, The ecological environment cannot be improved or planted.

このため、前面および左右両側面に開口した空洞部を有する箱状のブロックからなり、法面に沿って最下段から最上段にかけて敷設した際、皿状凹部を形成した上面が階段の踏面を形成する護岸ブロックが提案されている（例えば、特許文献２参照）。 For this reason, it consists of a box-shaped block with hollow parts opened on the front and both left and right sides, and when laid from the bottom to the top along the slope, the top with the dish-shaped recess forms the tread of the staircase A revetment block has been proposed (see, for example, Patent Document 2).

この護岸ブロックによれば、空洞部に玉石を配設することにより、魚介類の生息環境あるいは陸生小動物の営倉に有効な空間を形成することができ、また、皿状凹部に排水口を形成して土砂を充填することにより、植栽を施すことができるものとなる。
特開平６−３４１１２５号公報特開平１０−１２１４３７号公報 According to this revetment block, by arranging cobblestones in the cavity, it is possible to form an effective space in the habitat for fish and shellfish or for terrestrial small animals, and to form a drain outlet in the dish-shaped recess. By filling the earth and sand, planting can be performed.
JP-A-6-341125 Japanese Patent Laid-Open No. 10-121437

ところで、前述した護岸ブロックにおいては、法面を保護する機能の他、魚介類の生態環境を改善する機能や、法面の植生を増殖させる機能など、多面的な機能を有するものの、次のような問題がある。 By the way, the above-mentioned revetment block has a multifaceted function such as the function of improving the ecological environment of seafood and the function of growing the vegetation of the slope, in addition to the function of protecting the slope, as follows. There is a problem.

まず、上面に形成された皿状凹部に土砂を投入することにより、護岸ブロックに植栽を施すようにしているが、空洞部に影響を与えない程度の浅い深さの皿状凹部とせざるを得ず、植生が限定されるばかりか、土砂を保持する機能が少なく、風雨などによって流出し易い。また、底面と上面とのなす角度は一定であることから、法面の勾配が変化すると、階段の踏面となる上面が必ずしも水平面にならず、上面を階段歩行する際、違和感が発生し、安全性に難がある。しかも、その際には、土砂が傾斜した皿状凹部の一部に偏在することになり、ますます植物の生育が困難になる。 First, by putting earth and sand into the dish-shaped recess formed on the upper surface, we are trying to plant the revetment block, but it should be a dish-shaped recess with a shallow depth that does not affect the cavity. Not only is vegetation limited, but there are few functions to hold earth and sand, and it tends to flow out due to wind and rain. Also, since the angle between the bottom surface and the top surface is constant, if the slope of the slope changes, the top surface that becomes the tread of the staircase does not necessarily become a horizontal surface, and a sense of incongruity occurs when walking on the top surface. There is difficulty in sex. In addition, at that time, the earth and sand are unevenly distributed in a part of the inclined dish-shaped concave portion, and the growth of the plant becomes increasingly difficult.

また、空洞部は正面および左右両側面に開口されているが、護岸ブロックを左右方向に連続して敷設した場合、左右各側面が隣接する護岸ブロックの左右各側面と面接合されることから、左右各側面に形成された空洞部の開口は閉鎖される。このため、空洞部は、側面方向に連通するものの、魚介類や陸生小動物の出入りは、正面の開口を通してのみ行われることとなり、単調となる。 In addition, the cavity is open on the front and both left and right side surfaces, but when the revetment block is laid continuously in the left and right direction, the left and right side surfaces are joined to the left and right side surfaces of the adjacent revetment block, Openings in the cavity formed on the left and right side surfaces are closed. For this reason, although the hollow part communicates in the lateral direction, the seafood and small terrestrial animals come and go only through the front opening, which is monotonous.

さらに、これまで広く採用されてきた張りブロックとの整合性がなく、法面全体にわたって護岸ブロックを敷設する必要があり、コストがかさむものとなる。 In addition, there is no consistency with the tension block that has been widely adopted so far, and it is necessary to lay a revetment block over the entire slope, which increases costs.

本発明は、このような問題点に鑑みてなされたもので、河川、海岸、湖沼などの法面を保護することでき、また、魚介類や陸生小動物の生態環境を改善するとともに、法面の植生を増殖させることができる護岸ブロックおよび護岸構造ならびに護岸の構築方法を提供するものである。 The present invention has been made in view of such problems, and can protect the slopes of rivers, coasts, lakes, and the like, and can improve the ecological environment of seafood and small terrestrial animals. A revetment block and a revetment structure that can grow vegetation and a method of constructing a revetment are provided.

本発明の護岸ブロックは、上方より見て長方形状の平板状本体部と、平板状本体部の上面の前端縁に一体に立設された前壁部と、平板状本体部の上面の左右各端縁近傍において、その後端縁から前壁部にかけて一体に立設された左右の側壁部と、からなり、平板状本体部は、上面の周縁に額縁部が形成されて中央部分が皿状に凹陥され、その隣接する二つの側端面に係合凸部が形成されるとともに、隣接する他の二つの側端面に係合凸部と係合可能な係合凹部が形成され、また、左右各側壁部の上面は、平板状本体部の上面に対して一定角度傾斜して、前壁部の上面に連続するように形成され、さらに、前壁部および左右各側壁部には、それぞれ１個もしくは複数個の連通穴が形成されるとともに、前壁部の左右各外面および左右各側壁部の各外面が連続してそれぞれ平板状本体部の左右各端縁から若干距離をおいて左右の額縁部の途中位置から立ち上げられていることを特徴とするものである。 The revetment block according to the present invention includes a rectangular flat plate-like main body portion as viewed from above, a front wall portion integrally provided on the front edge of the upper surface of the flat plate-like main body portion, and left and right sides of the upper surface of the flat plate-like main body portion. In the vicinity of the edge, it is composed of left and right side walls that are integrally erected from the rear edge to the front wall, and the plate-like main body is formed with a frame on the periphery of the upper surface and the central part is dish-shaped is recessed, the engaging convex portion on two side end surfaces of adjacent its is formed, engaging protrusions can engage the engaging recesses in the other two side edge surfaces adjacent is formed, also, left and right The upper surface of each side wall portion is inclined at a certain angle with respect to the upper surface of the flat plate-like main body portion, and is formed to be continuous with the upper surface of the front wall portion. is formed pieces or a plurality of communication holes Rutotomoni, front wall portion of the left and right outer surfaces and each of the left and right side wall portions And is characterized in that it is raised from the middle position of the frame portions of the left and right at a slight distance from the left and right edges of each plate-shaped body portion outer surface is continuous.

本発明によれば、平板状本体部によって法面を保護することができる。この場合、隣接する平板状本体部は、左右方向や上下方向において係合凸部と係合凹部とが係合し、結束力に優れた護岸を形成することができる。また、平板状本体部の上面に、前壁部および左右の側壁部によって断面略直角三角形状の空間が形成され、該空間に栗石や土砂などの中詰材を充填して平場を形成することができる。しかも、充填された中詰材は安定した状態に維持されるため、人間の滑落が防止され、安全性に優れる。さらに、栗石によって形成される隙間や空間が魚介類や陸生小動物の生息空間や、外敵からの隠れ家、産卵場所となる。この際、前壁部および左右の側壁部には、それぞれ連通穴が形成されていることから、水流は、正面方向および側面方向に移動する一方、魚介類や陸生小動物は、正面方向および側面方向から自由に出入りすることができる。なお、連通穴の大きさは栗石が流出しない大きさに設定される。また、充填された土砂を利用して植栽を施すことができ、水辺の景観を改善することができる。この際、前壁部および左右の側壁部その内面側には、吸出し防止材が配設されることにより、連通穴を通して土砂が流出することが防止される。 According to the present invention, the slope can be protected by the flat body portion. In this case, the adjacent flat plate-like main body portions can engage with the engaging convex portions and the engaging concave portions in the left-right direction and the up-down direction, and form a revetment excellent in binding force. In addition, a space having a substantially right-angled triangular cross section is formed on the upper surface of the flat plate-like main body portion by the front wall portion and the left and right side wall portions, and a flat field is formed by filling the space with filling materials such as chestnut stone and earth and sand. Can do. Moreover, since the filled filling material is maintained in a stable state, human slipping is prevented and the safety is excellent. Furthermore, the gaps and spaces formed by chestnuts serve as habitats for seafood and small terrestrial animals, hideouts from external enemies, and spawning sites. At this time, since the communication holes are formed in the front wall part and the left and right side wall parts, respectively, the water flow moves in the front direction and the side direction, while seafood and terrestrial small animals are in the front direction and the side direction. You can go in and out freely. In addition, the size of the communication hole is set to such a size that the chestnut does not flow out. Moreover, it can plant using the filled earth and sand, and can improve the landscape of a waterside. At this time, the suction prevention material is disposed on the inner surface side of the front wall portion and the left and right side wall portions, thereby preventing the earth and sand from flowing out through the communication hole.

本発明の護岸構造は、法面の最下段の左右一端から他端にかけて、請求項１記載の護岸ブロックが敷設される一方、その上段から最上段にわたる各段の左右一端から他端にかけて、上方より見て正方形状であって、隣接する二つの側端面に前記護岸ブロックの平板状本体部の各係合凹部と係合可能な係合凸部が形成されるとともに、隣接する他の二つの側端面に前記護岸ブロックの平板状本体部の各係合凸部と係合可能な係合凹部が形成され、前記護岸ブロックの平板状本体部の縦寸法および厚みと等しい縦寸法および厚みを有する平板状ブロック体からなる張りブロックおよび前記護岸ブロックが、複数個の張りブロックをおいて１個の護岸ブロックが位置するように、敷設され、また、平常水位以下の護岸ブロックに栗石が充填されるとともに、平常水位より上方の護岸ブロックに土砂が充填されていることを特徴とするものである。 In the revetment structure of the present invention, the revetment block according to claim 1 is laid from the left and right ends to the other end of the lowest step of the slope, while the upper and lower ends of each step extending from the upper step to the uppermost step are It is square when viewed from the side, and the adjacent two side end surfaces are formed with engaging convex portions that can be engaged with the engaging concave portions of the flat plate-like main body portion of the revetment block, and the other two adjacent Engagement recesses that can be engaged with the respective engagement projections of the flat plate-like main body portion of the revetment block are formed on the side end surfaces, and have a vertical size and thickness that are equal to the vertical size and thickness of the flat plate-like main body portion of the revetment block. The tension block made of a flat block body and the revetment block are laid so that one revetment block is located with a plurality of tension blocks, and the revetment block below the normal water level is filled with chestnut. When Moni, is characterized in that the sediment above the revetment block is filled from the normal water level.

本発明によれば、張りブロックと護岸ブロックを併用して、河川、海岸、湖沼などの法面を保護することができる。この際、隣接する護岸ブロックおよび張りブロックは、左右方向および上下方向においてそれぞれ係合凸部と係合凹部とが係合し、結束力に優れた護岸を形成することができる。しかも、護岸ブロックが配置された箇所において、魚介類や陸生小動物の生態環境を改善するとともに、法面の植生を増殖させることができる。 According to the present invention, it is possible to protect slopes such as rivers, coasts, lakes and marshes by using a tension block and a revetment block in combination. At this time, the adjacent revetment block and the tension block can be engaged with the engagement convex portion and the engagement concave portion in the left-right direction and the vertical direction, respectively, and can form a revetment excellent in binding force. Moreover, it is possible to improve the ecological environment of seafood and small terrestrial animals and increase the sloped vegetation at the place where the revetment block is arranged.

本発明の護岸構造は、法面の最下段の左右一端から他端にかけて、請求項１記載の護岸ブロックが敷設される一方、その上段の左右一端から他端にかけて、または、その上段を含む複数段にわたる各段の左右一端から他端にかけて、上方より見て正方形状であって、隣接する二つの側端面に前記護岸ブロックの平板状本体部の各係合凹部と係合可能な係合凸部が形成されるとともに、隣接する他の二つの側端面に前記護岸ブロックの平板状本体部の各係合凸部と係合可能な係合凹部が形成され、前記護岸ブロックの平板状本体部の縦寸法および厚みと等しい縦寸法および厚みを有する平板状ブロック体からなる張りブロックおよび前記護岸ブロックが、複数個の張りブロックをおいて１個の護岸ブロックが位置するように、敷設され、さらに、その上方段から最上段にわたる各段の左右一端から他端にかけて、前記張りブロックが敷設され、また、平常水位以下の護岸ブロックに栗石が充填されるとともに、平常水位より上方の護岸ブロックに土砂が充填されていることを特徴とするものである。 The revetment structure of the present invention has a revetment block according to claim 1 laid from the left and right ends to the other end of the lowest step of the slope, and a plurality including the upper step from the left and right ends to the other end. Engaging protrusions that are square when viewed from above from the left and right ends to the other end of each step across the steps and that can be engaged with the respective engaging recesses of the flat plate-like main body portion of the revetment block on two adjacent side end surfaces. Are formed on the other two side end surfaces adjacent to each other, the engaging recesses that can be engaged with the engaging protrusions of the flat body portion of the revetment block, and the flat body portion of the revetment block. of the longitudinal dimension and thickness equal longitudinal dimension and tension block and the revetment block consists of a flat block body having a thickness, at a plurality of tension blocks as one revetment blocks are positioned, are laid, further The tension block is laid from the left and right ends to the other end of each stage from the upper stage to the uppermost stage, and the revetment block below the normal water level is filled with chestnut stone, and earth and sand are placed on the revetment block above the normal water level. It is characterized by being filled.

本発明において、前記法面の最上段に敷設された張りブロックが、平板状ブロック体の上面の一端縁にステップが形成された張りブロックであり、その下段またはその下段を含む複数段の各段に敷設された張りブロックの一部が、平板状ブロック体の上面の一端縁にステップが形成された張りブロックであって、複数個の張りブロックをおいて敷設されていると、張りブロックのステップおよび護岸ブロックを利用して水辺まで容易に到達することができる。 In the present invention, the tension block laid on the uppermost step of the slope is a tension block in which a step is formed at one end edge of the upper surface of the flat block body, and each of the lower stage or a plurality of stages including the lower stage A part of the tension block laid in the step is a tension block in which a step is formed on one edge of the upper surface of the flat block body, and when the tension block is laid with a plurality of tension blocks, the step of the tension block And you can easily reach the waterside using the revetment block.

この場合、ステップを有する張りブロックが、最上段から土砂が充填された護岸ブロックに向けて斜め方向に連続するように配置されるか、土砂が充填された護岸ブロックが斜め方向に連続するように配置される。 In this case, the tension block having steps is arranged so as to continue in an oblique direction from the top to the revetment block filled with earth and sand, or so that the revetment block filled with earth and sand continues in an oblique direction. Be placed.

本発明の護岸の構築方法は、法面の基礎工を施工した後、請求項１記載の護岸ブロックを最下段の基礎工の左右一端から他端にかけて、左右方向に対向する左右各側端面の係合凸部と係合凹部を係合させて順に据え付け、次いで、その上段から最上段にわたる各段の基礎工の左右一端から他端にかけて、上方より見て正方形状であって、隣接する二つの側端面に前記護岸ブロックの平板状本体部の各係合凹部と係合可能な係合凸部が形成されるとともに、隣接する他の二つの側端面に前記護岸ブロックの平板状本体部の各係合凸部と係合可能な係合凹部が形成され、前記護岸ブロックの平板状本体部の縦寸法および厚みと等しい縦寸法および厚みを有する平板状ブロック体からなる張りブロックおよび前記護岸ブロックを、複数個の張りブロックをおいて１個の護岸ブロックが位置するように、左右方向に対向する左右各側端面の係合凸部と係合凹部を係合させるとともに、前後方向に対向する前後各側端面の係合凸部と係合凹部を係合させて、かつ、隣接する一対の張りブロックの突き合わせ部または隣接する張りブロックと護岸ブロックとの突き合わせ部が最下段の隣接する一対の護岸ブロックの突き合わせ部またはその下段の隣接する護岸ブロックと張りブロックとの突き合わせ部もしくは隣接する一対の張りブロックの突き合わせ部と連続しないように、順に据え付けた後、平常水位以下の護岸ブロックに栗石を充填するとともに、平常水位より上方の護岸ブロックに土砂を充填することを特徴とするものである。 Method of constructing a revetment of the present invention, after applying a basic engineering of slope, toward the other end of the revetment block of claim 1, wherein the left and right end of the lowermost foundation work, opposed in the lateral direction left and right of each side end face The engaging convex part and the engaging concave part are engaged with each other and installed in order, and then from the left and right ends to the other end of the foundation work in each stage extending from the upper stage to the uppermost stage, it is a square shape as viewed from above, and two adjacent Engagement projections that can be engaged with the respective engagement recesses of the flat body portion of the revetment block are formed on one side end surface, and the flat body portion of the revetment block is formed on the other two adjacent side end surfaces . A tension block formed of a flat block body having a vertical dimension and thickness equal to the vertical dimension and thickness of the flat plate-like main body portion of the revetment block formed with engagement concave portions that can be engaged with the respective engagement convex portions, and the revetment block A plurality of tension blowers Engage the engaging projections and engaging recesses on the left and right side end faces facing in the left-right direction so that one revetment block is positioned with the hooks in between, and the engagement between the front and rear side end faces facing in the front-rear direction The mating convex part and the engaging concave part are engaged, and the abutting part of the adjacent pair of stretch blocks or the butting part of the adjacent tension block and the revetment block is the butting part of the pair of adjacent revetment blocks adjacent to the lowest stage or After installing the revetment block below the normal water level in order to prevent it from continuing to the abutment part of the adjacent revetment block and the extension block, or the abutment part of the adjacent pair of extension blocks, fill the revetment block below the normal water level with the normal water level. The upper revetment block is filled with earth and sand.

本発明によれば、河川、海岸、湖沼などの法面を保護する護岸機能の他、魚介類や陸生小動物の生態環境を改善するとともに、法面の植生を増殖させる環境保全機能を備えた護岸を構築することができる。 According to the present invention, in addition to the revetment function for protecting the slopes of rivers, coasts, lakes, and the like, the revetment has an environmental conservation function for improving the ecological environment of seafood and small terrestrial animals, and for proliferating the vegetation on the slopes. Can be built.

本発明の護岸の構築方法は、法面の基礎工を施工した後、請求項１記載の護岸ブロックを最下段の基礎工の左右一端から他端にかけて、左右方向に対向する左右各側端面の係合凸部と係合凹部を係合させて順に据え付け、次いで、その上段の基礎工の左右一端から他端にかけて、または、その上段を含む複数段にわたる各段の基礎工の左右一端から他端にかけて、上方より見て正方形状であって、隣接する二つの側端面に前記護岸ブロックの平板状本体部の各係合凹部と係合可能な係合凸部が形成されるとともに、隣接する他の二つの側端面に前記護岸ブロックの平板状本体部の各係合凸部と係合可能な係合凹部が形成され、前記護岸ブロックの平板状本体部の縦寸法および厚みと等しい縦寸法および厚みを有する平板状ブロック体からなる張りブロックおよび前記護岸ブロックを、複数個の張りブロックをおいて１個の護岸ブロックが位置するように、左右方向に対向する左右各側端面の係合凸部と係合凹部を係合させるとともに、前後方向に対向する前後各側端面の係合凸部と係合凹部を係合させて、かつ、隣接する一対の張りブロックの突き合わせ部または隣接する張りブロックと護岸ブロックとの突き合わせ部が最下段の隣接する一対の護岸ブロックの突き合わせ部またはその下段の隣接する護岸ブロックと張りブロックとの突き合わせ部もしくは隣接する一対の張りブロックの突き合わせ部と連続しないように、順に据え付けた後、その上方段から最上段にわたる各段の基礎工の左右一端から他端にかけて、前記張りブロックを左右方向に対向する左右各側端面の係合凸部と係合凹部を係合させるとともに、前後方向に対向する前後各側端面の係合凸部と係合凹部を係合させて、かつ、隣接する一対の張りブロックの突き合わせ部がその下段の隣接する護岸ブロックと張りブロックとの突き合わせ部または隣接する一対の張りブロックの突き合わせ部と連続しないように、順に据え付けた後、平常水位以下の護岸ブロックに栗石を充填するとともに、平常水位より上方の護岸ブロックに土砂を充填することを特徴とするものである。 Method of constructing a revetment of the present invention, after applying a basic engineering of slope, toward the other end of the revetment block of claim 1, wherein the left and right end of the lowermost foundation work, opposed in the lateral direction left and right of each side end face Engage the engaging convex part and the engaging concave part and install in order, then from the left and right ends of the upper foundation work to the other end, or from the left and right ends of the foundation work of each stage over multiple stages including the upper stage Engaging protrusions that are square when viewed from above and that are engageable with the engaging recesses of the plate-like main body portion of the revetment block are formed adjacent to each other on two adjacent side end surfaces. Engaging recesses that can be engaged with the engaging projections of the flat plate-like main body portion of the revetment block are formed on the other two side end surfaces, and the vertical dimensions are equal to the vertical size and thickness of the flat plate-like main body portion of the revetment block. comprising a plate-like block body having and a thickness The engagement block and the engagement recesses on the left and right side end faces facing each other in the left-right direction are engaged so that a single revetment block is positioned in a plurality of tension blocks. The engagement protrusions and engagement recesses of the front and rear side end faces facing each other in the front-rear direction are engaged, and the abutting part of a pair of adjacent tension blocks or the abutting part of an adjacent tension block and a revetment block is the most. After installing in order so as not to be continuous with the butting part of a pair of adjacent revetment blocks in the lower tier, the butt part of the adjacent revetment block and the tensioning block in the lower tier, or the butting part of a pair of neighboring tensioning blocks, the upper stage From the left and right ends to the other end of the foundation work in each step extending from the top to the top, the engaging projections on the left and right side end faces that oppose the tension block in the left-right direction And the engaging recesses of the front and rear side surfaces facing each other in the front-rear direction, and the butted portions of a pair of adjacent tension blocks are adjacent to the lower stage. After installing in order so as not to be continuous with the butting part of the revetment block and the tension block or the abutting part of the adjacent pair of tension blocks, the revetment block below the normal water level is filled with chestnut and the revetment above the normal water level The block is filled with earth and sand.

本発明によれば、河川、海岸、湖沼などの法面を保護する護岸機能の他、魚介類や陸生小動物の生態環境を改善するとともに、法面の植生を増殖させる環境保全機能を備えた護岸を構築することができる。 According to the present invention, in addition to the revetment function for protecting the slopes of rivers, coasts, lakes, and the like, the revetment is provided with an environmental protection function for improving the ecological environment of seafood and small terrestrial animals and proliferating the vegetation on the slopes. Can be built.

本発明によれば、河川、海岸、湖沼などの法面を保護することができ、また、魚介類や陸生小動物の生態環境を改善するとともに、法面の植生を増殖させることができる。 According to the present invention, slopes such as rivers, coasts, and lakes can be protected, and the ecological environment of seafood and small terrestrial animals can be improved, and slope vegetation can be propagated.

以下、本発明の実施の形態を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１乃至図３には、本発明の護岸ブロック１の一実施形態が示されている。 1 to 3 show an embodiment of a revetment block 1 according to the present invention.

この護岸ブロック１は、上方より見て長方形状の平板状本体部２と、該平板状本体部２における上面の前端縁および左右各端縁近傍にそれぞれ平板状本体部２と一体に立設された周壁部３と、から構成されている。 The revetment block 1 is erected integrally with the flat plate-like main body portion 2 in the vicinity of the rectangular flat plate-like main body portion 2 as viewed from above, and the front end edge and the left and right end edges of the upper surface of the flat plate-like main body portion 2. And the peripheral wall portion 3.

平板状本体部２は、コンクリートから形成され、上面の周縁に額縁部２１が形成されて中央部分が皿状に凹陥されている。そして、平板状本体部２の隣接する二つの側端面には、係合凸部２ａが形成され、また、隣接する他の二つの側端面には、係合凹部２ｂが形成されている。 The flat plate-like main body 2 is made of concrete, a frame portion 21 is formed on the periphery of the upper surface, and the central portion is recessed in a dish shape. And the engagement convex part 2a is formed in the two adjacent side end surfaces of the flat main body part 2, and the engagement recessed part 2b is formed in the other two adjacent side end surfaces.

具体的には、図１に示す護岸ブロック１においては、平板状本体部２の左側端面および後側端面にそれぞれ係合凸部２ａが形成され、その右側端面および前側端面にそれぞれ係合凹部２ｂが形成されている。したがって、左右方向に護岸ブロック１，１を設置した際、右方の護岸ブロック１の左側端面に形成された係合凸部２ａと、左方の護岸ブロック１の右側端面に形成された係合凹部２ｂとが係合し、それらの護岸ブロック１，１における平板状本体部２，２が面一に連続する。また、上下方向に護岸ブロック１，１を設置した際、下方の護岸ブロック１の後側端面に形成された係合凸部２ａと、上方の護岸ブロック１の前側端面に形成された係合凹部２ｂとが係合し、それらの護岸ブロック１，１における平板状本体部２，２が面一に連続する。 Specifically, in the revetment block 1 shown in FIG. 1, engagement convex portions 2 a are respectively formed on the left end surface and the rear end surface of the flat plate-like main body portion 2, and engagement concave portions 2 b are respectively formed on the right end surface and the front end surface thereof. Is formed. Therefore, when the revetment blocks 1 and 1 are installed in the left-right direction, the engagement protrusion 2a formed on the left end surface of the right revetment block 1 and the engagement formed on the right end surface of the left revetment block 1 The concave portion 2b is engaged, and the flat plate-like main body portions 2 and 2 in the revetment blocks 1 and 1 are flush with each other. Further, when the revetment blocks 1 and 1 are installed in the vertical direction, the engagement convex portion 2a formed on the rear end surface of the lower revetment block 1 and the engagement concave portion formed on the front end surface of the upper revetment block 1 2b engages, and the flat plate-like main-body parts 2 and 2 in those revetment blocks 1 and 1 continue in a flush manner.

なお、護岸ブロック１の平板状本体部２の大きさは、前述した張りブロック１０，１０Ａの大きさに合わせて設定されている。具体的には、護岸ブロック１の平板状本体部２の縦寸法および厚みは、張りブロック１０，１０Ａにおける平板状ブロック体１１の縦寸法および厚みと一致し、その横寸法は、張りブロック１０，１０Ａにおける平板状ブロック体１１の横寸法の整数倍、例えば、２倍に設定されている。 In addition, the magnitude | size of the flat plate-shaped main-body part 2 of the revetment block 1 is set according to the magnitude | size of the tension blocks 10 and 10A mentioned above. Specifically, the vertical dimension and thickness of the flat body portion 2 of the revetment block 1 coincide with the vertical dimension and thickness of the flat block body 11 in the tension blocks 10 and 10A. It is set to an integral multiple of, for example, twice the horizontal dimension of the flat block body 11 in 10A.

また、護岸ブロック１の係合凸部２ａは張りブロック１０，１０Ａの係合凹部１１ｂと係合可能であり、護岸ブロック１の係合凹部２ｂは張りブロック１０，１０Ａの係合凸部１１ａと係合可能となっている。 Further, the engagement convex portion 2a of the revetment block 1 can be engaged with the engagement concave portion 11b of the tension blocks 10, 10A, and the engagement concave portion 2b of the revetment block 1 is engaged with the engagement convex portion 11a of the tension blocks 10, 10A. Engageable.

一方、周壁部３は、ポーラスコンクリートから形成され、平板状本体部２の上面の前端縁側に立設された前壁部３１と、その左右各端縁側にそれぞれ立設された左側壁部３２および右側壁部３３と、からなり、上方より見て上辺が開放されたコ字状に形成されている。 On the other hand, the peripheral wall portion 3 is made of porous concrete, and has a front wall portion 31 erected on the front end edge side of the upper surface of the flat plate-like main body portion 2, a left side wall portion 32 erected on each of the left and right end edge sides, and The right side wall portion 33 is formed in a U shape having an upper side opened as viewed from above.

前壁部３１は、外面が平板状本体部２における前側の額縁部２１の外端縁に沿って立ち上げられるとともに、内面が前側の額縁部２１の内端縁に沿って立ち上げられ、かつ、左右各外面が平板状本体部２の左端縁および右端縁からそれぞれ若干距離をおいて左右の額縁部２１の途中位置から立ち上げられている。一方、左側壁部３２および右側壁部３３は、各外面が前壁部３１の左右各外面に連続するように、それぞれ平板状本体部２の左端縁および右端縁から若干距離をおいて左右の額縁部２１の途中位置から立ち上げられるとともに、各内面がそれぞれ左側および右側の額縁部２１の各内端縁に沿って立ち上げられている。また、左側壁部３２および右側壁部３３は、その上面が平板状本体部２の後端縁から前壁部３１の上面に連続するように、平板状本体部２の上面に対して一定角度の傾斜面に形成されている。さらに、前壁部３１には、断面略アーチ状であって、内面側から外面側に向かって末広がりとなる３個のテーパー状の連通穴３１ａが形成されている。同様に、左側壁部３２および右側壁部３２にも、断面略アーチ状であって、内面側から外面側に向かって末広がりとなる１個のテーパー状の連通穴３２ａ，３３ａがそれぞれ形成されている。 The front wall portion 31 has an outer surface raised along the outer edge of the front frame portion 21 in the flat plate-like main body portion 2, and an inner surface raised along the inner edge of the front frame portion 21, and The left and right outer surfaces are raised from midway positions of the left and right frame portions 21 at a distance from the left and right end edges of the flat plate-like main body 2. On the other hand, the left side wall 32 and the right side wall 33 have left and right left and right edges slightly spaced from the left and right edges of the plate-like main body 2 so that each outer surface is continuous with each left and right outer surface of the front wall 31. While being raised from a middle position of the frame portion 21, each inner surface is raised along each inner edge of the left and right frame portions 21. Further, the left side wall portion 32 and the right side wall portion 33 are at a certain angle with respect to the upper surface of the flat plate main body portion 2 such that the upper surfaces thereof are continuous from the rear edge of the flat plate main body portion 2 to the upper surface of the front wall portion 31. It is formed on the inclined surface. Further, the front wall portion 31 is formed with three tapered communication holes 31a having a substantially arched cross section and extending from the inner surface side toward the outer surface side. Similarly, the left side wall portion 32 and the right side wall portion 32 are each formed with one tapered communication hole 32a, 33a that has a substantially arched cross section and widens from the inner surface side toward the outer surface side. Yes.

この場合、前壁部３１に形成された連通穴３１ａおよび左右各側壁部３２，３３に形成された連通穴３２ａ，３３ａは、後述する栗石１０３が流出しない程度の大きさに設定されている。 In this case, the communication hole 31a formed in the front wall portion 31 and the communication holes 32a and 33a formed in the left and right side wall portions 32 and 33 are set to such a size that the chestnut 103 described later does not flow out.

なお、この護岸ブロック１の実施形態においては、平板状本体部２の左側端面に係合凸部２ａが形成され、その右側端面に係合凹部２ｂが形成された場合を例示したが、平板状本体部２の右側端面に係合凸部２ａが形成され、その左側端面に係合凹部２ｂが形成されてもかまわない。 In the embodiment of the revetment block 1, the case where the engaging convex portion 2 a is formed on the left end surface of the flat plate-like main body portion 2 and the engaging concave portion 2 b is formed on the right end surface thereof is exemplified. The engagement protrusion 2a may be formed on the right end surface of the main body 2, and the engagement recess 2b may be formed on the left end surface.

次に、このように構成された護岸ブロック１を、張りブロック１０，１０Ａとともに用いて護岸を形成する施工手順について図４乃至図８に基づいて説明する。 Next, a construction procedure for forming a revetment using the revetment block 1 configured as described above together with the tension blocks 10 and 10A will be described with reference to FIGS.

まず、護岸を形成する法面の直下の基礎砕石１００上に基礎コンクリート１０１を設置する（図１０参照）とともに、法面に裏込め砕石１０２を敷き均し、基礎工を施工する。 First, the foundation concrete 101 is set on the foundation crushed stone 100 immediately below the slope forming the revetment (see FIG. 10), and the backfill crushed stone 102 is spread on the slope and the foundation work is constructed.

なお、土の性状によっては、裏込め砕石１０２を敷設する前に遮水シートを張設する。 Depending on the properties of the soil, a water shielding sheet is stretched before laying the backfill crushed stone 102.

次いで、基礎工の右端に護岸ブロック１を据え付けた後（図４参照）、その左方に護岸ブロック１を後側端面および前側端面が面一に連続するように、据え付ける。この際、右方の護岸ブロック１の左側端面に形成された係合凸部２ａに、左方の護岸ブロック１の右側端面に形成された係合凹部２ｂを係合させる。以下同様に、法面の左端に向かって順に護岸ブロック１を据え付けて、基礎工が施工された法面の最下段に右端から左端にかけて護岸ブロック１を据え付ける（図５参照）。 Next, after the revetment block 1 is installed at the right end of the foundation work (see FIG. 4), the revetment block 1 is installed on the left side so that the rear end face and the front end face are flush with each other. At this time, the engagement concave portion 2 b formed on the right end surface of the left bank protection block 1 is engaged with the engagement convex portion 2 a formed on the left end surface of the right bank protection block 1. Similarly, the revetment block 1 is installed in order toward the left end of the slope, and the revetment block 1 is installed from the right end to the left end at the lowest level of the slope where the foundation work was performed (see FIG. 5).

この後、次段の基礎工の右端に張りブロック１０を据え付ける。この際、最下段の護岸ブロック１の後側端面に形成された係合凸部２ａに、張りブロック１０の前側端面に形成された係合凹部１１ａを係合させる。また、敷設した張りブロック１０の左右各端縁が最下段の隣接する一対の護岸ブロック１，１の突き合わせ部と重ならないように、張りブロック１０の横寸法の半分だけ左右方向にずらして張りブロック１０を敷設する。次いで、先に敷設した張りブロック１０の左方に張りブロック１０を配置し、右方の張りブロック１０の左側端面に形成された係合凸部１１ａに、左方の張りブロック１０の右側端面に形成された係合凹部１１ｂを係合させるとともに、最下段の護岸ブロック１の後側端面に形成された係合凸部２ａに、張りブロック１０の前側端面に形成された係合凹部１１ｂを係合させ、据え付ける。同様にして、複数個の張りブロック１０を順に左方に向けて敷設する。設定個数の張りブロック１０を据え付けたならば、再び護岸ブロック１を据え付ける。すなわち、先に敷設した張りブロック１０の左方に護岸ブロック１を配置し、張りブロック１０の左側端面に形成された係合凸部１１ａに、護岸ブロック１の右側端面に形成された係合凹部２ｂを係合させるとともに、最下段の護岸ブロック１の後側端面に形成された係合凸部２ａに、護岸ブロック１の前側端面に形成された係合凹部２ｂを係合させ、据え付ける。以下同様に、設定個数の張りブロック１０をおいて１個の護岸ブロック１が位置するように、張りブロック１０および護岸ブロック１を左右方向に敷設する（図６参照）。 Thereafter, the tension block 10 is installed at the right end of the next-stage foundation work. At this time, the engaging concave portion 11 a formed on the front end surface of the tension block 10 is engaged with the engaging convex portion 2 a formed on the rear end surface of the bottom revetment block 1. Also, the tension block is shifted in the left-right direction by half the horizontal dimension of the tension block 10 so that the left and right edges of the tension block 10 laid do not overlap the abutting portions of the pair of adjacent revetment blocks 1, 1 at the bottom. 10 is laid. Next, the tension block 10 is arranged on the left side of the tension block 10 laid first, and the engagement convex portion 11a formed on the left end surface of the right tension block 10 is formed on the right end surface of the left tension block 10. The engaging recess 11b formed is engaged, and the engaging recess 2b formed on the front end surface of the tension block 10 is engaged with the engaging protrusion 2a formed on the rear end surface of the bottom revetment block 1. Combine and install. Similarly, a plurality of tension blocks 10 are laid in order toward the left. When the set number of tension blocks 10 are installed, the revetment block 1 is installed again. That is, the revetment block 1 is arranged on the left side of the tension block 10 laid first, and the engagement recess 11a formed on the left end surface of the tension block 10 is engaged with the engagement recess formed on the right end surface of the revetment block 1. While engaging 2b, the engaging convex part 2a formed in the front end surface of the revetment block 1 is engaged with the engaging convex part 2a formed in the rear side end surface of the lowest stage revetment block 1, and it installs. Similarly, the tension block 10 and the revetment block 1 are laid in the left-right direction so that one revetment block 1 is positioned with the set number of tension blocks 10 (see FIG. 6).

２段目の施工が完了したならば、３段目についても、同様に、設定個数の張りブロック１０をおいて１個の護岸ブロック１が位置するように、張りブロック１０および護岸ブロック１を左右方向に敷設する。 When the construction of the second stage is completed, the tension block 10 and the revetment block 1 are similarly moved in the third stage so that one revetment block 1 is positioned with the set number of tension blocks 10 in place. Lay in the direction.

以下、その上段から最上段にわたる各段においては、張りブロック１０，１０Ａを法面の右端から左端にかけて順次敷設する。この際、張りブロック１０，１０Ａの右側端面の係合凹部１１ｂを、張りブロック１０，１０Ａの左側端面の係合凸部１１ａに係合させるとともに、前側端面の係合凹部１１ｂを、先にその下段に敷設された張りブロック１０，１０Ａの後側端面の係合凸部１１ａまたは護岸ブロック１の後側端面の係合凸部２ａに係合させて据え付ければよい（図７参照）。 Hereinafter, in each stage from the upper stage to the uppermost stage, the tension blocks 10 and 10A are sequentially laid from the right end to the left end of the slope. At this time, the engagement concave portion 11b on the right end surface of the tension block 10, 10A is engaged with the engagement convex portion 11a on the left end surface of the tension block 10, 10A, and the engagement concave portion 11b on the front end surface is first moved to the engagement concave portion 11b. What is necessary is just to engage and engage with the engaging convex part 11a of the rear side end surface of the tension | blocking blocks 10 and 10A laid in the lower stage, or the engaging convex part 2a of the rear side end surface of the seawall block 1 (refer FIG. 7).

この場合、法面の最上段には、図９に示すように、張りブロック１０Ａのみが敷設される。また、張りブロック１０Ａは、護岸ブロック１に向けて斜め方向に連続するように、各段に配置される。このため、最上段から斜め方向に水辺に至るステップ１２が形成され、張りブロック１０Ａのステップ１２を利用して、水辺の護岸ブロック１に到達することが可能となる。 In this case, as shown in FIG. 9, only the tension block 10A is laid on the top of the slope. Further, the tension block 10A is arranged in each step so as to continue in an oblique direction toward the revetment block 1. For this reason, a step 12 is formed from the uppermost stage to the waterside in an oblique direction, and it is possible to reach the waterside revetment block 1 using the step 12 of the tension block 10A.

このようにして最下段から最上段までの各段において、護岸ブロック１および張りブロック１０，１０Ａを順次敷設したならば、平常水位以下の護岸ブロック１、例えば、図８に示す最下段の護岸ブロック１およびその上段の護岸ブロック１において、前壁部３１および左右の側壁部３２，３３によって区画された空間に栗石１０３を充填する。一方、平常水位を越える護岸ブロック１、例えば、図８に示す最下段から３段目の護岸ブロック１において、前壁部３１および左右の側壁部３２，３３によって区画された空間に土砂１０４を充填することにより、図９および図１０に示すように、護岸を形成することができる。 In this way, when the revetment block 1 and the tension blocks 10 and 10A are sequentially laid in the respective steps from the bottom to the top, the revetment block 1 below the normal water level, for example, the bottom revetment block shown in FIG. 1 and its upper revetment block 1 are filled with chestnut stone 103 in the space defined by the front wall portion 31 and the left and right side wall portions 32 and 33. On the other hand, in the revetment block 1 exceeding the normal water level, for example, in the revetment block 1 from the bottom to the third stage shown in FIG. 8, the space defined by the front wall portion 31 and the left and right side wall portions 32, 33 is filled with earth and sand 104. By doing so, a revetment can be formed as shown in FIGS.

この際、土砂１０４を充填するに先立って、前壁部３１および左右の側壁部３２，３３の内面側には、吸出し防止材（図示せず）が配設され、連通穴３１ａ，３２ａ，３３ａを通して土砂１０４が流出することが防止される。 At this time, prior to filling the earth and sand 104, suction preventing materials (not shown) are disposed on the inner surfaces of the front wall portion 31 and the left and right side wall portions 32, 33, and the communication holes 31a, 32a, 33a are provided. The earth and sand 104 are prevented from flowing out.

このような護岸によれば、護岸ブロック１に栗石１０３や土砂１０４を充填して平場を形成することができるとともに、充填された栗石１０３や土砂１０４は安定した状態に維持される。このため、人間の滑落を防止して、安全に水辺に誘うことができる。また、平常水位以下の護岸ブロック１に充填された栗石１０３によって形成される隙間や空間が魚介類や陸生小動物の生息空間や、外敵からの隠れ家、産卵場所となる。この際、前壁部３１および左右の側壁部３２，３３には、それぞれ連通穴３１ａ、３２ａ、３３ａが形成されていることから、水流は、正面方向および側面方向に移動する一方、魚介類や陸生小動物は、正面方向および側面方向から自由に出入りすることができる。また、充填された土砂１０４を利用して植栽を施すことができ、水辺の景観を改善することができる。 According to such a revetment, the revetment block 1 can be filled with chestnut stone 103 and earth and sand 104 to form a flat field, and the filled chestnut stone 103 and earth and sand 104 are maintained in a stable state. For this reason, it is possible to prevent humans from sliding down and invite them to the waterside safely. In addition, gaps and spaces formed by chestnuts 103 filled in the revetment block 1 below the normal water level serve as habitats for seafood and terrestrial small animals, hideouts from external enemies, and spawning sites. At this time, since the communication holes 31a, 32a, and 33a are formed in the front wall portion 31 and the left and right side wall portions 32 and 33, respectively, the water flow moves in the front direction and the side surface direction, Terrestrial small animals can freely enter and exit from the front and side directions. Moreover, it can plant using the filled earth and sand 104, and can improve the landscape of a waterside.

なお、詳細には説明しないが、図１２に示すように、最下段に護岸ブロック１を敷設した後、その上段から最上段にわたる各段において、設定個数の張りブロック１０をおいて１個の護岸ブロック１が位置するように、張りブロック１０および護岸ブロック１を左右方向に敷設して、護岸を形成することもできる。 Although not described in detail, as shown in FIG. 12, after laying the revetment block 1 at the lowermost stage, one revetment with a set number of tension blocks 10 in each stage from the upper stage to the uppermost stage. It is also possible to form a revetment by laying the tension block 10 and the revetment block 1 in the left-right direction so that the block 1 is located.

この場合、護岸ブロック１は、斜め方向に連続するように配置される。このように護岸ブロック１を配置すると、護岸ブロック１に充填される土砂などの平場を利用して安全に水辺に到達することが可能となる。 In this case, the bank protection block 1 is arrange | positioned so that it may continue in the diagonal direction. When the revetment block 1 is arranged in this way, it becomes possible to safely reach the waterside using a flat field such as earth and sand filled in the revetment block 1.

また、法面の最上段には、張りブロック１０に代えて、ステップ１２を有する張りブロック１０Ａのみが敷設される点は、先に説明した護岸と同様である。 Moreover, it replaces with the tension | blocking block 10 and the point where only the tension | blocking block 10A which has step 12 is laid in the uppermost step of a slope is the same as that of the bank protection demonstrated previously.

以上のように本発明によれば、河川、海岸、湖沼などの法面を保護する護岸機能の他、魚介類や陸生小動物の生態環境を改善するとともに、法面の植生を増殖させることができる環境保全機能を備えることにより、河川、海岸、湖沼などの水辺や法面を自然な環境に変更し、その環境を保全することが可能となる。 As described above, according to the present invention, in addition to the revetment function for protecting the slopes of rivers, coasts, lakes, and the like, it is possible to improve the ecological environment of seafood and small terrestrial animals and to proliferate slope vegetation. By providing an environmental protection function, it becomes possible to change the watersides and slopes of rivers, coasts, and lakes to a natural environment and preserve the environment.

本発明の護岸ブロックの一実施形態を示す平面図、正面図および側面図である。It is the top view, front view, and side view which show one Embodiment of the revetment block of this invention. 図１の護岸ブロックの斜視図である。It is a perspective view of the bank protection block of FIG. 図１の護岸ブロックの縦断面図である。It is a longitudinal cross-sectional view of the bank protection block of FIG. 本発明の護岸を構築する手順を説明する工程図である。It is process drawing explaining the procedure which builds the revetment of this invention. 本発明の護岸を構築する手順を説明する工程図である。It is process drawing explaining the procedure which builds the revetment of this invention. 本発明の護岸を構築する手順を説明する工程図である。It is process drawing explaining the procedure which builds the revetment of this invention. 本発明の護岸を構築する手順を説明する工程図である。It is process drawing explaining the procedure which builds the revetment of this invention. 本発明の護岸を構築する手順を説明する工程図である。It is process drawing explaining the procedure which builds the revetment of this invention. 本発明の護岸の一実施形態を示す正面図である。It is a front view which shows one Embodiment of the revetment of this invention. 図９の護岸を説明する縦断面図である。It is a longitudinal cross-sectional view explaining the bank protection of FIG. 環境保全機能を備えた状態の護岸を図１０に対応して説明する縦断面図である。It is a longitudinal cross-sectional view explaining the revetment of the state provided with the environmental protection function corresponding to FIG. 本発明の護岸の他の実施形態を示す正面図である。It is a front view which shows other embodiment of the revetment of this invention. 従来公知の張りブロックを示す斜視図および縦断面図である。It is the perspective view and longitudinal cross-sectional view which show a conventionally well-known tension | blocking block. 従来公知のステップを有する張りブロックを示す斜視図および縦断面図である。It is the perspective view and longitudinal cross-sectional view which show the tension block which has a conventionally well-known step.

Explanation of symbols

１護岸ブロック
２平板上本体部
２ａ係合凸部
２ｂ係合凹部
３周壁部
３１前壁部
３２左側壁部
３３右側壁部
３１ａ，３２ａ，３３ａ連通穴
１０，１０Ａ張りブロック
１００基礎砕石
１０１基礎コンクリート
１０２裏込め砕石
１０３栗石
１０４土砂
DESCRIPTION OF SYMBOLS 1 Revetment block 2 Main body part on flat plate 2a Engaging convex part 2b Engaging concave part 3 Peripheral wall part 31 Front wall part 32 Left side wall part 33 Right side wall part 31a, 32a, 33a Communication hole 10, 10A Tension block 100 Basic crushed stone 101 Basic concrete 102 Backfilled crushed stone 103 Chestnut stone 104 Earth and sand

Claims

When viewed from above, the flat plate-shaped main body portion, the front wall portion erected integrally with the front edge of the upper surface of the flat plate-shaped main body portion, and the rear end in the vicinity of the left and right edges of the upper surface of the flat plate-shaped main body portion a side wall portion of the right and left erected integrally toward the front wall from the edge, made of a flat plate-like body portion is frame portion is formed on the circumference of the upper surface central portion is recessed in a dish shape, its adjacent to Engaging convex portions are formed on the two side end surfaces, and engaging concave portions engageable with the engaging convex portions are formed on the other two adjacent side end surfaces, and the upper surfaces of the left and right side wall portions are Inclined by a certain angle with respect to the upper surface of the flat plate-like main body part, and formed to be continuous with the upper surface of the front wall part. Further, each of the front wall part and the left and right side wall parts has one or more communication holes. each There is formed Rutotomoni, the right and left outer surfaces of the outer surface and left and right side wall portions of the front wall portion continuously Revetment block, characterized in that it is raised from the middle position of the frame portions of the left and right at a slight distance from the left and right edges of the plate-like body portion.

The revetment block according to claim 1 is laid from the left and right ends to the other end of the lowermost step of the slope, and is square when viewed from above from the left and right ends to the other end of each step extending from the upper step to the uppermost step. In addition, an engaging convex portion that can be engaged with each engaging concave portion of the flat plate-like main body portion of the revetment block is formed on two adjacent side end surfaces, and the other two side end surfaces of the revetment block are Engagement recesses that can be engaged with the respective engagement protrusions of the flat plate-like main body portion are formed, and the tension is made of a flat block body having a vertical dimension and thickness equal to the vertical dimension and thickness of the flat plate main body portion of the revetment block. The block and the revetment block are laid so that one revetment block is located with a plurality of tension blocks, and the revetment block below the normal water level is filled with chestnut stone, and from the normal water level Revetment structure sediment in a square of revetment blocks is characterized in that it is filled.

While the revetment block according to claim 1 is laid from the left and right ends to the other end of the lowermost step of the slope, the left and right ends of each step extending from the left and right ends to the other end of the upper step or a plurality of steps including the upper step From the upper end to the other end, it is square when viewed from above, and on the two adjacent side end surfaces, an engaging convex portion that can be engaged with each engaging concave portion of the flat plate-like main body portion of the revetment block is formed, Engaging recesses that can be engaged with the engaging protrusions of the flat plate-like main body portion of the revetment block are formed on the other two adjacent side end surfaces, and are equal to the vertical dimension and thickness of the flat plate-like main body portion of the revetment block. longitudinal dimension and tension block and the revetment block consists of a flat block body having a thickness, at a plurality of tension blocks as one revetment blocks are positioned, are laid, further, the top from above stage The stretch block is laid from the left and right ends to the other end of each step, and the revetment block below the normal water level is filled with chestnut and the revetment block above the normal water level is filled with earth and sand. Characteristic revetment structure.

The tension block laid on the uppermost step of the slope is a tension block in which a step is formed on one edge of the upper surface of the flat block body, and is laid on the lower stage or each of a plurality of stages including the lower stage. some of the tension blocks, a tension block which steps are formed on one edge of the upper surface of the flat block body, according to claim, characterized in that it is laid at a plurality of tension block 2 or 3 The revetment structure described.

After constructing the slope foundation work, the embossment and engagement recesses on the left and right end faces facing in the left-right direction are applied to the revetment block according to claim 1 from the left and right ends to the other end of the bottom foundation work. From the upper stage to the uppermost stage, from the left and right ends to the other end of the foundation work, it is square when viewed from above , and the flat plate of the revetment block is adjacent to the two side end faces. Engagement projections that can be engaged with the respective engagement recesses of the main body are formed, and can be engaged with the respective engagement projections of the plate-like main body of the revetment block on the other two adjacent side end surfaces And a plurality of tension blocks. The tension block formed of a flat block body having a vertical dimension and thickness equal to the vertical dimension and thickness of the flat plate-like main body portion of the revetment block, and the revetment block. One revetment bro The engaging convex portions and engaging concave portions on the left and right side end surfaces facing in the left-right direction are engaged with each other, and the engaging convex portions and engaging concave portions on the front and rear side surfaces facing in the front-rear direction are And the butted portion of a pair of adjacent stretch blocks, or the butted portion of the adjacent stretch block and the revetment block is the butted portion of a pair of revetment blocks adjacent to the lowest step or the revetment block adjacent to the bottom After installing in order so that it does not continue to the butting part of the tension block or the pair of adjacent tension blocks, the revetment block below the normal water level is filled with chestnut stone, and earth and sand are put on the revetment block above the normal water level. A revetment construction method characterized by filling.

After constructing the slope foundation work, the embossment and engagement recesses on the left and right end faces facing in the left-right direction are applied to the revetment block according to claim 1 from the left and right ends to the other end of the bottom foundation work. Engage and install in order, then from the left and right ends to the other end of the upper foundation work, or from the left and right ends to the other end of each stage of the foundation work over multiple stages including the upper stage, as viewed from above An engagement convex portion that can be engaged with each engagement concave portion of the plate-like main body portion of the revetment block is formed on two adjacent side end surfaces, and the other two side end surfaces are adjacent to the revetment. An engagement recess that is engageable with each engagement protrusion of the flat plate body of the block is formed, and has a vertical dimension and thickness equal to the vertical dimension and thickness of the flat plate body of the revetment block. Tension block and the seawall Engage the engaging protrusions and engaging recesses on the left and right side end faces facing in the left-right direction so that one revetment block is positioned with a plurality of tension blocks, and the lock faces in the front-rear direction The engaging protrusions and engaging recesses on the respective front and rear side end surfaces are engaged, and the abutting portions of the adjacent pair of tension blocks or the abutting portions of the adjacent tension blocks and the revetment block are adjacent pairs at the bottom. After installing in order so that it is not continuous with the butting part of the revetment block or the butting part of the adjacent revetment block and tension block or the butting part of a pair of adjacent tension blocks in the lower stage, each section from the upper level to the top level From the left and right ends of the step foundation work to the other end, when the engagement convex part and the engagement concave part of the left and right side end surfaces facing the tension block in the left and right direction are engaged, In addition, the engaging convex portions and the engaging concave portions of the front and rear side end faces facing in the front-rear direction are engaged, and the butted portions of the adjacent pair of tension blocks are adjacent to the revetment block and the tension block adjacent to the lower stage. After installing in order so as not to be continuous with the butting part of the adjacent block or a pair of adjacent tension blocks, the revetment block below the normal water level is filled with chestnut and the revetment block above the normal water level is filled with earth and sand A revetment construction method characterized by