JPH06299526A - Vegitation foot protection fish nest blocks - Google Patents
Vegitation foot protection fish nest blocksInfo
- Publication number
- JPH06299526A JPH06299526A JP5087291A JP8729193A JPH06299526A JP H06299526 A JPH06299526 A JP H06299526A JP 5087291 A JP5087291 A JP 5087291A JP 8729193 A JP8729193 A JP 8729193A JP H06299526 A JPH06299526 A JP H06299526A
- Authority
- JP
- Japan
- Prior art keywords
- vegetation
- fish nest
- concrete layer
- fish
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 241000251468 Actinopterygii Species 0.000 title claims abstract description 35
- 239000004567 concrete Substances 0.000 claims abstract description 21
- 239000002689 soil Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011372 high-strength concrete Substances 0.000 claims abstract description 8
- 230000002265 prevention Effects 0.000 claims description 11
- 239000013049 sediment Substances 0.000 claims description 10
- 230000004308 accommodation Effects 0.000 claims description 4
- 238000007596 consolidation process Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 abstract description 6
- 241000894006 Bacteria Species 0.000 abstract description 2
- 241001465754 Metazoa Species 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 2
- 241001474374 Blennius Species 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Landscapes
- Artificial Fish Reefs (AREA)
- Revetment (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、景観及び魚類等の生態
系に対する環境に配慮した植生根固め魚巣ブロックに関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an environment-friendly vegetation root-consolidating fish nest block for the landscape and ecosystems such as fish.
【０００２】[0002]
【従来の技術】河川のコンクリート製根固めブロック
は、多数個を連設するために底面が正方形や多角形のも
ので、最近では躯体内外へ貫通する穴を設けて魚巣用も
兼ねているものもある(例えば実開平2-84824号)。2. Description of the Related Art A concrete consolidation block for rivers has a square or polygonal bottom surface for connecting a large number of blocks, and recently, it also serves as a fish nest with a hole penetrating inside and outside the body. There are also things (eg, Kaikaidaira 2-84824).
【０００３】[0003]
【発明が解決しようとする課題】根固めブロックを用い
た河川内の景観も環境に配慮して、できるかぎり自然に
近く、かつ、植物、生物に適したものが近年要望され、
また、耐久性についても長期にわたって安定なものが従
来以上に要望されるようになっている。In recent years, there have been demands for landscapes in rivers using root blocks that are as close to nature as possible and suitable for plants and living things, considering the environment.
Further, with regard to durability, more stable products over a long period of time have been demanded more than ever before.
【０００４】[0004]
【課題を解決するための手段】上記要望に応えるべく本
発明では、ほぼ山形躯体の頂部から下方へ向けて植生土
収容穴４を設けてなる植生根固めブロックであって、流
水方向前面に高強度コンクリート層１を有し、後部は少
なくとも表面が多孔質コンクリート層２であって、側面
から内部に向けて魚巣穴３を設けた構造の植生根固め魚
巣ブロックとした。ここにいう高強度コンクリート層１
の高強度とは、流水方向後方の多孔質コンクリート層２
よりも高い強度をもつことをいい、流水方向後方の多孔
質コンクリート層２が強度的に難点があるのを前面で保
護するので、ここでは普通コンクリート、高強度コンク
リート等の総称である。Means for Solving the Problems In order to meet the above demands, the present invention is a vegetation root-fixing block having a vegetation soil accommodating hole 4 provided substantially downwards from the top of a mountain-shaped skeleton, and the vegetation root-consolidating block has a high height in the front direction. A vegetation root-consolidated fish nest block having a structure in which a strong concrete layer 1 is provided and at least the surface of the rear portion is a porous concrete layer 2, and fish nest holes 3 are provided from the side surface toward the inside. High-strength concrete layer 1 here
Of high strength means that the porous concrete layer 2 behind the flowing water
It means that it has a higher strength, and protects the porous concrete layer 2 behind the flowing water in terms of strength from the front side, so it is a general term for ordinary concrete, high-strength concrete, and the like.
【０００５】多孔質コンクリート層２は、多孔質コンク
リート(ＮＦＣ)によって形成された層で、空隙が大きい
ので強度に難点があるものの、後に記すように生物環境
に大きく寄与する。多孔質コンクリート層２の形成方法
の一例としては、高性能減水剤や活性シリカ等を結合剤
に添加し、分離を起こさない粘稠なセメントモルタルを
骨材にまぶしたコンクリートを挙げることができる。多
孔質コンクリート層２は必ずしも内部まである必要はな
いが、本発明の目的を考慮して内部が通常のコンクリー
トであっても表面には多孔質コンクリートが用いられ
る。The porous concrete layer 2 is a layer formed of porous concrete (NFC) and has a large void and therefore has a difficulty in strength, but contributes greatly to the biological environment as described later. As an example of the method for forming the porous concrete layer 2, there can be mentioned concrete in which a high-performance water reducing agent, activated silica or the like is added to a binder, and viscous cement mortar that does not cause separation is sprinkled on an aggregate. The porous concrete layer 2 does not necessarily have to be inside, but in view of the purpose of the present invention, porous concrete is used for the surface even if the inside is normal concrete.
【０００６】前記植生土収容穴４の周囲には土砂流失防
止ネット５を設けるとよい。この土砂流失防止ネット５
は、植生土収容穴４が頂部から底部まで貫通した穴の場
合はその底部にも存在する袋状のものが好ましい。ま
た、砂流失防止ネット５を設けて最も効果的な部分は、
躯体の側部から内部に向けて設けられた魚巣穴３と植生
土収容穴４との交わる部分である。砂流失防止ネット５
の素材は、耐久性のあるものであれば、特にその素材を
問わないが、植生土収容穴４に充填する土砂が流失しな
い程度のメッシュをもつ必要がある。A sediment flow prevention net 5 may be provided around the vegetation soil accommodating hole 4. This sediment loss prevention net 5
When the vegetation soil accommodating hole 4 is a hole penetrating from the top to the bottom, a bag-shaped one that is also present at the bottom is preferable. Also, the most effective part with the sand loss prevention net 5 is
It is a portion where the fish nest hole 3 and the vegetation soil accommodating hole 4 provided from the side of the body toward the inside intersect. Sand loss prevention net 5
Any material may be used as long as it is durable, but it is necessary to have a mesh that does not wash away the earth and sand filled in the vegetation soil accommodating hole 4.
【０００７】この植生根固め魚巣ブロックは、流水方向
に対して底部から頂部に至る間が下方に湾曲した(下方
に凸な)勾配を有した構造とし、底部は多数個の敷設に
適した方形や多角形がよい。This vegetation root-consolidating fish nest block has a structure having a downwardly curved (convex downward) slope from the bottom to the top with respect to the flowing direction, and the bottom is suitable for laying a large number of pieces. A square or polygon is good.
【０００８】[0008]
【作用】本発明の植生根固め魚巣ブロックは、流水方向
前面に高強度コンクリート層１を有しているので、河川
を流下する土砂等による衝撃に対して抵抗性を発揮し、
耐久性を持つ。他の部分は表面が多孔質コンクリート層
２であるから、水中のバクテリア、小動物類、藻類等が
付着や生息することができる。Since the vegetation root-consolidating fish nest block of the present invention has the high-strength concrete layer 1 on the front surface in the direction of running water, it exhibits resistance to impact due to earth and sand flowing down the river,
Has durability. Since the surface of the other portion is the porous concrete layer 2, bacteria in water, small animals, algae, etc. can adhere and inhabit.
【０００９】側面から内部に向けて魚巣穴３を設けてい
るので、この穴を魚が棲みかとすることができ、また、
植生土収容穴４の土中に根を張った植物の毛根及び土砂
が、魚巣穴３に棲む魚等の生物と土砂流失防止ネット５
を介して接触することができる。これにより、より自然
な形態での産卵等を可能にする。Since the fish nest hole 3 is provided from the side surface toward the inside, the fish can live in this hole.
The hair roots and the sediment of the plant rooted in the soil of the vegetation soil storage hole 4 are the living organisms such as fish living in the fish nest hole 3 and the sediment loss prevention net 5.
Can be contacted via. This enables spawning in a more natural form.
【００１０】流水方向に対して底部から頂部に至る間が
下方に湾曲した勾配を持つので、流水圧により植生根固
め魚巣ブロック全体が地盤に押し下げられる力(F)が作
用して安定性を増す。Since there is a downwardly curved slope from the bottom to the top with respect to the running water direction, a force (F) that pushes down the entire vegetation root-consolidating fish nest block to the ground due to running water pressure acts to stabilize the stability. Increase.
【００１１】[0011]
【実施例】図１は河川内に配置した本発明の植生根固め
魚巣ブロックの要部破断側面図、図２は同平面図であ
る。側面からみて上部に平坦部を有した岩状のこの植生
根固め魚巣ブロックは、流水方向前面を底部から頂部に
至る間が下方に湾曲した(下方に凸な)勾配を有した形状
にしている。これにより水の勢いが増すほど図中矢印で
示したように、力(Ｆ)が斜め下方に作用するようになっ
ているので、地盤へ押し付けられて、安定性がよい、こ
の部分は通常のコンクリートを用いた高強度コンクリー
ト層１となっている。それより後部は全て多孔質コンク
リート層２で形成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a fragmentary side view of a vegetation root-consolidating fish nest block of the present invention arranged in a river, and FIG. 2 is a plan view thereof. This rock-shaped vegetation root-consolidating fish nest block with a flat part in the upper part when viewed from the side has a front surface in the direction of water flow that is curved downward from the bottom to the top (convex downward). There is. As a result, as the force of the water increases, the force (F) acts diagonally downward as shown by the arrow in the figure, so it is pressed against the ground and has good stability. It is a high-strength concrete layer 1 using concrete. The rear part thereof is entirely formed of the porous concrete layer 2.
【００１２】本発明の植生根固め魚巣ブロックの多くの
部分を占めている多孔質コンクリート層２には、頂部か
ら下方へ向けて植生土収容穴４を設けている。植生土収
容穴は、この例では底部まで貫通しているが、側面から
内部に向けて設けられた魚巣穴３の位置に達するまでの
穴でもよい。The porous concrete layer 2 occupying most of the vegetation root-consolidating fish nest block of the present invention is provided with vegetation soil accommodating holes 4 downward from the top. Although the vegetation soil storage hole penetrates to the bottom in this example, it may be a hole reaching from the side surface to the position of the fish nest hole 3 provided toward the inside.
【００１３】前記植生土収容穴４の内部周囲には土砂流
失防止ネット５を設けている。この土砂流失防止ネット
５は、この植生根固め魚巣ブロックの植生土収容穴４が
頂部から底部まで貫通した穴であるから、底部にもネッ
トが存在する。この砂流失防止ネット５を設けているの
で、植生土収容穴４の土中に根を張った植物の毛根及び
土砂が、魚巣穴３に棲む魚等の生物と土砂流失防止ネッ
ト５を介して接触することができるようになっている。A sediment loss prevention net 5 is provided around the inside of the vegetation soil accommodation hole 4. Since this sediment loss prevention net 5 is a hole through which the vegetation soil accommodation hole 4 of this vegetation root-consolidating fish nest block penetrates from the top to the bottom, the net also exists at the bottom. Since this sand loss prevention net 5 is provided, the hair roots and sediment of the plant rooted in the soil of the vegetation soil accommodation hole 4 can pass through the sediment loss prevention net 5 with the organisms such as fish living in the fish nest hole 3. Can be contacted.
【００１４】この植生根固め魚巣ブロックには、後方か
ら魚巣穴３を植生土収容穴４に達するまでほぼ水平に設
けているが、更に側面に設けて複数にしてもよいし、内
部が広く出口が狭い構造、或いはその逆の構造にしても
よい。In this vegetation root-consolidating fish nest block, fish nest holes 3 are provided substantially horizontally from the rear until reaching the vegetation soil accommodating hole 4, but they may be further provided on the side surface to form a plurality of holes. The structure may be wide and narrow, or vice versa.
【００１５】底部は根固めのために多数個の敷設に適し
た方形であって、四隅を切り欠いて八角形に近い形状と
し、隅部に突出筋６を設けてブロック間の連結ができる
ようになっている。The bottom has a square shape suitable for laying a large number of pieces for root consolidation, and has four corners cut out to have a shape close to an octagon, and projecting streaks 6 are provided at the corners so that the blocks can be connected to each other. It has become.
【００１６】[0016]
【発明の効果】本発明の植生根固め魚巣ブロックは以上
のような構造であるから、これを用いて施工された河川
内の景観が自然に近く、かつ、植物や、魚類等の生物に
適したものとなる。また、耐久性もよく長期にわたって
安定な根固めブロックとしての機能と、植生、魚巣機能
を発揮する。EFFECTS OF THE INVENTION Since the vegetation root-consolidating fish nest block of the present invention has the above-mentioned structure, the landscape in the river constructed using this is close to nature and it is suitable for plants, fish and other living things. It will be suitable. In addition, it also has good durability and functions as a rooting block that is stable over a long period of time, as well as vegetation and fish nest functions.
【図１】河川内に配置した本発明の植生根固め魚巣ブロ
ックの要部破断側面図である。FIG. 1 is a fragmentary side view of a vegetation root-consolidating fish nest block of the present invention arranged in a river.
【図２】同平面図である。FIG. 2 is a plan view of the same.
１ 高強度コンクリート層 ２ 多孔質コンクリート層 ３ 魚巣穴 ４ 植生土収容穴 ５ 土砂流失防止ネット ６ 突出筋 1 High-strength concrete layer 2 Porous concrete layer 3 Fish nest hole 4 Vegetation soil storage hole 5 Sediment loss prevention net 6 Protruding streak
Claims (3)
生土収容穴４を設けてなる植生根固めブロックであっ
て、流水方向前面に高強度コンクリート層１を有し、後
部は少なくとも表面が多孔質コンクリート層２であって
側面から内部に向けて魚巣穴３を設けてなる植生根固め
魚巣ブロック。1. A vegetation root consolidation block comprising a vegetation soil accommodating hole 4 extending downward from the top of a mountain-shaped skeleton, comprising a high-strength concrete layer 1 on the front surface in the direction of running water, and at least the surface of the rear portion of the vegetation root consolidation block. A vegetation root-consolidating fish nest block which is a porous concrete layer 2 and is provided with fish nest holes 3 from the sides toward the inside.
ット５を設けてなる請求項１記載の植生根固め魚巣ブロ
ック。2. The vegetation root-consolidating fish nest block according to claim 1, wherein a sediment loss prevention net 5 is provided around the vegetation soil accommodation hole 4.
が下方に湾曲した勾配を設けてなる請求項１記載の植生
根固め魚巣ブロック。3. The vegetation root-consolidating fish nest block according to claim 1, wherein a slope that is curved downward is provided between the bottom and the top with respect to the direction of running water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08729193A JP3242197B2 (en) | 1993-04-14 | 1993-04-14 | Vegetation root consolidation fish nest block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08729193A JP3242197B2 (en) | 1993-04-14 | 1993-04-14 | Vegetation root consolidation fish nest block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06299526A true JPH06299526A (en) | 1994-10-25 |
| JP3242197B2 JP3242197B2 (en) | 2001-12-25 |
Family
ID=13910710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08729193A Expired - Fee Related JP3242197B2 (en) | 1993-04-14 | 1993-04-14 | Vegetation root consolidation fish nest block |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3242197B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05310761A (en) * | 1992-01-31 | 1993-11-22 | Bayer Ag | New, n,n-bis-(2-chloroethyl)phosphorosodiamidate |
| CN119744676A (en) * | 2025-01-06 | 2025-04-04 | 沈阳农业大学 | A micro-interference device for improving the habitat of black-headed gull nesting sites and its use method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10031037A1 (en) | 2000-06-14 | 2001-12-20 | Pharmagg Systemtechnik Gmbh | Method for managing wet washing by varying peripheral speed of washer drum |
-
1993
- 1993-04-14 JP JP08729193A patent/JP3242197B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05310761A (en) * | 1992-01-31 | 1993-11-22 | Bayer Ag | New, n,n-bis-(2-chloroethyl)phosphorosodiamidate |
| CN119744676A (en) * | 2025-01-06 | 2025-04-04 | 沈阳农业大学 | A micro-interference device for improving the habitat of black-headed gull nesting sites and its use method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3242197B2 (en) | 2001-12-25 |
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