JP2003055941A - Permeable check dam - Google Patents
Permeable check damInfo
- Publication number
- JP2003055941A JP2003055941A JP2001248240A JP2001248240A JP2003055941A JP 2003055941 A JP2003055941 A JP 2003055941A JP 2001248240 A JP2001248240 A JP 2001248240A JP 2001248240 A JP2001248240 A JP 2001248240A JP 2003055941 A JP2003055941 A JP 2003055941A
- Authority
- JP
- Japan
- Prior art keywords
- dam
- erosion control
- transmission type
- control dam
- wire
- 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.)
- Pending
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、透過型砂防ダ
ム、特に、基礎上に間隔をあけて固定された複数本の柱
材間にワイヤーあるいはロッドを張り渡すことによって
開口の閉塞率を上げることなく、再流出の土砂礫や第２
次の土石流を捕捉することができ、しかも、副ダム等の
施設を構築する必要がないことからダム構築費用が安価
で済む透過型砂防ダムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission type erosion control dam, and more particularly, to increasing a blockage rate of an opening by stretching a wire or a rod between a plurality of pillar members fixedly spaced on a foundation. No, reflow gravel and second
The present invention relates to a transmission-type sabo dam that can capture the next debris flow and that does not require the construction of a facility such as a sub-dam because the dam construction cost is low.
【０００２】[0002]
【従来の技術】透過型砂防ダムは、洪水時の土石流を阻
止し、平常時および中小洪水時には土砂を下流側に流下
させて、計画的にダムの空容量を確保し、且つ、自然の
摂理に合致する等、土砂を流下させない不透過型ダムに
はない利点を有している。2. Description of the Related Art Transparent sabo dams prevent debris flow during floods and allow sediments to flow downstream during normal times and during small and medium-sized floods to systematically secure the dam's empty capacity and to provide natural providence. It has advantages that impermeable dams that do not allow sediment to flow do not meet the requirements of the above.
【０００３】鋼管を主要構成部材とする透過型砂防ダム
の一つに、図９に示される鋼管製透過型砂防ダムが知ら
れている。As one of the transmission type sand control dams having a steel pipe as a main component, a transmission type sand control dam made of steel shown in FIG. 9 is known.
【０００４】この透過型砂防ダムは、基礎コンクリート
２１上に渓流方向と直角方向に間隔をあけて固定された
それぞれ複数本の鋼管製上流側柱材２２および鋼管製下
流側柱材２３と、上流側柱材２２と下流側柱材２３との
間に固定された鋼管製梁材２４と、隣接する上流側柱材
２２間に固定された鋼管製上流側つなぎ材２５と、隣接
する下流側柱材２３間に固定された鋼管製下流側つなぎ
材２６とからなっている。This transmission type erosion control dam comprises a plurality of steel pipe upstream side column members 22 and a plurality of steel pipe downstream side column members 23, which are fixed on a foundation concrete 21 at intervals at right angles to the mountain stream direction, and upstream. Steel pipe beam member 24 fixed between the side pillar members 22 and the downstream side pillar members 23, a steel pipe upstream side connecting member 25 fixed between the adjacent upstream side pillar members 22, and an adjacent downstream side pillar It comprises a steel pipe downstream connecting material 26 fixed between the materials 23.
【０００５】この種のダムによれば、土石流の巨礫の衝
突エネルギーは、柱材２２およびつなぎ材２５の凹み変
形や塑性曲げ変形等によって吸収される。According to this type of dam, the collision energy of the boulders of the debris flow is absorbed by the dent deformation and plastic bending deformation of the column member 22 and the connecting member 25.
【０００６】隣接する上流側柱材２２の純間隔（Ｗ）
は、土石流の最大礫径を（Ｄｍａｘ）とした場合、１．
５Ｄｍａｘ以下にすれば、土石流をほぼ１００％近く捕
捉することができ、１．０Ｄｍａｘにすれば、完全に捕
捉することができるとされている。Pure spacing (W) between adjacent upstream side column members 22
When the maximum gravel diameter of the debris flow is (Dmax), 1.
It is said that if it is 5 Dmax or less, almost 100% of the debris flow can be captured, and if it is 1.0 Dmax, it can be completely captured.
【０００７】ダム設計上、最下流ダムという考えがあ
る。これは、一つの渓流では、複数個のダムが計画され
るが、最下流の場所に構築されるダムのことをいう。最
下流ダムは、人命、財産保全の最後の砦の役目を持ち、
土石流に対してはより慎重な設計（柱材間隔等）が行わ
れている。この理由は、以下の現象があるからである。Due to the dam design, there is an idea that it is the most downstream dam. This refers to a dam constructed at the most downstream location, although multiple dams are planned for one stream. The most downstream dam has the role of the last fort for human life and property conservation.
More careful design (column spacing, etc.) has been implemented for debris flow. The reason for this is that there are the following phenomena.
【０００８】（１）土石流の先端部の礫の捕捉に対して
は、上記のような考え方で良いが、一度捕捉され、ダム
に堆積している土砂礫が、後続の洪水（流水）により、
ダム地点より下流側に再流出することがある。(1) The above idea may be used for capturing gravel at the tip of the debris flow, but once the gravel and gravel that has been captured and accumulated on the dam is caused by the subsequent flood (running water),
It may reflow downstream from the dam site.
【０００９】（２）土石流が捕捉され、ダム地点に堆積
している土砂の上層を通って、後続の土石流、すなわ
ち、第２次の土石流がダムのスリット部（柱材間の開
口）を通過して、下流側に被害を及ぼすことがある。(2) The debris flow is captured, passes through the upper layer of the sediment deposited at the dam point, and the subsequent debris flow, that is, the second debris flow passes through the slit portion (opening between pillar materials) of the dam. Then, it may damage the downstream side.
【００１０】従って、従来は、図９に示すように、上流
側柱材２２の上部に上流側つなぎ材２５を配している。
通常、この構造の場合、上流側つなぎ材２５部分の開口
（Ｓ）の幅（Ｗａ）および高さ（Ｗｂ）は、上流側柱材
２２の純間隔を（Ｗ）、土石流の最大礫径を（Ｄｍａ
ｘ）とした場合、以下のように設計すれば、上記現象の
起こる確率を下げることができるとされている。Therefore, conventionally, as shown in FIG. 9, the upstream connecting member 25 is arranged on the upper portion of the upstream column member 22.
Usually, in the case of this structure, the width (Wa) and the height (Wb) of the opening (S) of the upstream connecting material 25 portion are the pure interval (W) of the upstream side pillar material 22 and the maximum debris diameter of the debris flow. (Dma
In the case of x), it is said that the probability of occurrence of the above phenomenon can be reduced by designing as follows.
【００１１】Ｗ＝Ｗａ＝Ｄｍａｘ Ｗｂ＝ＤｍａｘW = Wa = Dmax Wb = Dmax
【００１２】[0012]
【発明が解決しようとする課題】しかしながら、上記従
来の透過型砂防ダムは、上流側つなぎ材２５が上流側柱
材２２とほぼ同径の大径鋼管からなっているので、上流
側柱材２２間の開口の閉塞率が上がって、ダムの透過部
の全体の閉塞率が上がる。結果として、堰上げ現象が生
じることになる。堰上げ現象が生じると、本来の効果、
すなわち、土石流を阻止することができなくなる恐れが
あった。また、堰上げ現象に対処するため、副ダム等の
施設が必要となり、必然的にダム構築費用が増加すると
いった問題もあった。However, in the above-mentioned conventional transmission type erosion control dam, since the upstream connecting material 25 is made of a large diameter steel pipe having substantially the same diameter as the upstream column material 22, the upstream column material 22 is used. The clogging rate of the opening between the two increases, and the clogging rate of the entire transmission part of the dam increases. As a result, a weiring phenomenon occurs. When the weiring phenomenon occurs, the original effect,
That is, there is a possibility that the debris flow cannot be stopped. In addition, in order to deal with the weiring phenomenon, facilities such as a secondary dam are required, which inevitably increases dam construction costs.
【００１３】なお、上記閉塞率とは、図１０に示すよう
に、ダムの透過部面積を（Ｔ）とした場合、下式で表さ
れる。The above-mentioned blockage rate is expressed by the following equation when the area of the transmission part of the dam is (T) as shown in FIG.
【００１４】閉塞率＝Ｓ0／Ｔ×１００（％） 但し、上式において、 Ｔ：ｂ×ｈ Ｓ0：構造体の面積（閉塞断面積）Blockage rate = S 0 / T × 100 (%) However, in the above equation, T: b × h S 0 : Area of structure (closed cross-sectional area)
【００１５】従って、この発明の目的は、柱材間の開口
の閉塞率を上げることなく、再流出の土砂礫や第２次の
土石流を捕捉することができ、しかも、副ダム等の施設
が不要となって、ダム構築費用が安価で済む透過型砂防
ダムを提供することにある。Therefore, an object of the present invention is to catch reflowing debris and secondary debris flow without increasing the blockage ratio of the openings between the pillar materials, and to provide a facility such as a secondary dam. It is to provide a transparent sabo dam that is unnecessary and can be constructed at low cost.
【００１６】[0016]
【課題を解決するための手段】請求項１記載の発明は、
基礎上に間隔をあけて固定された複数本の柱材を有する
透過型砂防ダムにおいて、前記柱材間に横ワイヤーが張
り渡され、前記横ワイヤーは、前記柱材の軸線方向に間
隔をあけて複数本設けられていることに特徴を有するも
のである。The invention according to claim 1 is
In a transmission type erosion control dam having a plurality of pillar members fixed at intervals on a foundation, transverse wires are stretched between the pillar materials, and the transverse wires are spaced in the axial direction of the pillar materials. The feature is that a plurality of them are provided.
【００１７】請求項２記載の発明は、前記横ワイヤー
は、たるみをもたせて前記柱材間に張り渡されているこ
とに特徴を有するものである。The invention according to claim 2 is characterized in that the lateral wire is stretched between the column members with a slack.
【００１８】請求項３記載の発明は、前記横ワイヤーの
上下方向の間隔は、上方ほど狭くなっていることに特徴
を有するものである。The invention according to claim 3 is characterized in that the interval between the horizontal wires in the vertical direction becomes narrower toward the top.
【００１９】請求項４記載の発明は、前記横ワイヤーの
上下方向間は、縦ワイヤーによって連結されていること
に特徴を有するものである。The invention according to claim 4 is characterized in that the vertical wires of the horizontal wires are connected by vertical wires.
【００２０】請求項５記載の発明は、基礎上に間隔をあ
けて固定された複数本の柱材を有する透過型砂防ダムに
おいて、前記柱材間にロッドが固定され、前記ロッド
は、前記柱材の軸線方向に間隔をあけて複数本設けられ
ていることに特徴を有するものである。According to a fifth aspect of the present invention, in a transmission type erosion control dam having a plurality of pillar members fixedly spaced on a foundation, rods are fixed between the pillar members, and the rods are the pillars. The feature is that a plurality of materials are provided at intervals in the axial direction of the material.
【００２１】請求項６記載の発明は、前記ロッドの上下
方向の間隔は、上方ほど狭くなっていることに特徴を有
するものである。The invention according to claim 6 is characterized in that the vertical interval between the rods becomes narrower toward the top.
【００２２】請求項７記載の発明は、前記ロッドは、弾
性材を介して前記柱材に取り付けられていることに特徴
を有するものである。The invention according to claim 7 is characterized in that the rod is attached to the column member through an elastic material.
【００２３】[0023]
【発明の実施の形態】次に、この発明の透過型砂防ダム
の一実施態様を、図面を参照しながら説明する。BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a transmission type erosion control dam of the present invention will be described with reference to the drawings.
【００２４】図１は、請求項１に係る発明の透過型砂防
ダムを示す概略正面図、図２は、ワイヤー端部の固定構
造を示す断面図、図３は、請求項４に係る発明の透過型
砂防ダムを示す概略正面図、図４は、請求項５に係る発
明の透過型砂防ダムを示す概略正面図、図５は、請求項
５に係る発明の透過型砂防ダムを示す概略平面図、図６
は、ロッドの固定構造を示す断面図、図７は、ロッド取
り付け用ブラケットを示す斜視図、図８は、ロッドの他
の固定構造を示す断面図である。FIG. 1 is a schematic front view showing a transmission type erosion control dam of the invention according to claim 1, FIG. 2 is a sectional view showing a fixing structure of a wire end portion, and FIG. 3 is a view of the invention according to claim 4. 4 is a schematic front view showing a transparent sabo dam, FIG. 4 is a schematic front view showing a transparent sabo dam of the invention according to claim 5, and FIG. 5 is a schematic plan view showing a transparent sabo dam of the invention according to claim 5. Figure, Figure 6
FIG. 7 is a sectional view showing a rod fixing structure, FIG. 7 is a perspective view showing a rod mounting bracket, and FIG. 8 is a sectional view showing another rod fixing structure.
【００２５】図１から図８において、１は、基礎コンク
リート２上に渓流と直交する方向に間隔をあけて垂直に
固定された複数本の鋼管製柱材３を有する透過型砂防ダ
ムである。４は、柱材３間に張り渡された横ワイヤーで
あり、柱材３の軸線方向に間隔をあけて複数本設けられ
ている。In FIG. 1 to FIG. 8, reference numeral 1 is a transmission type erosion control dam having a plurality of steel pipe pillars 3 fixed vertically on a basic concrete 2 at intervals in a direction orthogonal to a mountain stream. Reference numeral 4 denotes a horizontal wire stretched between the pillar materials 3, and a plurality of lateral wires are provided at intervals in the axial direction of the pillar material 3.
【００２６】横ワイヤー４は、図９の従来の透過型砂防
ダムにおける上流側つなぎ材２５の作用を有し、再流出
の土砂礫や第２次の土石流を捕捉する。横ワイヤー４部
分の開口（Ｓ）の幅（Ｗａ）および高さ（Ｗｂ）は、柱
材３の純間隔を（Ｗ）、土石流の最大礫径を（Ｄｍａ
ｘ）とした場合、下記（１）および（２）式を満足する
ように設計すれば、再流出の土砂礫や第２次の土石流の
捕捉をより確実なものにすることができる。The horizontal wire 4 has the function of the upstream connecting material 25 in the conventional transmission type erosion control dam shown in FIG. 9, and captures reflowing debris and secondary debris flow. The width (Wa) and the height (Wb) of the opening (S) in the horizontal wire 4 portion are the pure interval (W) of the pillar material 3 and the maximum debris diameter of the debris flow (Dma).
In the case of x), by designing to satisfy the following expressions (1) and (2), it is possible to more reliably capture reflowing debris and secondary debris flow.
【００２７】 Ｗ＝Ｗａ＝Ｄｍａｘ ---（１） Ｗｂ＝Ｄｍａｘ ---（２）[0027] W = Wa = Dmax --- (1) Wb = Dmax --- (2)
【００２８】横ワイヤー４は、柱材３を水平に貫通し、
図２に示すように、横ワイヤー４の両端に索端ボルト５
（楔状ボルト）を座金６を介して固定することによって
抜け止めを図っている。横ワイヤー４の中間部にも突起
部材７が固定されている。従って、柱材３間を通る再流
出の土砂礫や第２次の土石流は、横ワイヤー４によって
確実に捕捉される。なお、横ワイヤー４にたるみを持た
せれば、土石流の衝突エネルギーを緩衝する効果が得ら
れる。The horizontal wire 4 penetrates the pillar 3 horizontally,
As shown in FIG. 2, rope end bolts 5 are attached to both ends of the horizontal wire 4.
The (wedge-shaped bolt) is fixed via the washer 6 to prevent it from coming off. The protruding member 7 is also fixed to the middle portion of the horizontal wire 4. Therefore, the reflow gravel and secondary debris flow that passes between the pillars 3 is reliably captured by the horizontal wire 4. If the horizontal wire 4 has a slack, an effect of buffering the collision energy of the debris flow can be obtained.
【００２９】横ワイヤー４の上下間隔が変わるのを防止
するために、図３に示すように、横ワイヤー４の上下方
向間を少なくとも１本の縦ワイヤー８によって連結す
る。横ワイヤー４にたるみを持たせた場合に、縦ワイヤ
ー８による横ワイヤー４の上下間の連結は特に有効であ
る。縦ワイヤー８が１本の場合の上記（１）、（２）式
の開口（Ｓ）の幅（Ｗａ）および高さ（Ｗｂ）は、図３
に示す通りである。In order to prevent the vertical distance between the horizontal wires 4 from changing, as shown in FIG. 3, the vertical wires 8 are connected to each other in the vertical direction by at least one vertical wire 8. When the horizontal wire 4 has a slack, the vertical connection of the horizontal wire 4 by the vertical wire 8 is particularly effective. FIG. 3 shows the width (Wa) and height (Wb) of the opening (S) in the above formulas (1) and (2) when the vertical wire 8 is one.
As shown in.
【００３０】後続流の礫の大きさは、第一次の土石流に
比べて小径になるので、それに合せて横ワイヤー４の上
下方向の間隔を上方ほど狭くすると、小径の礫も効果的
に捕捉することができる。Since the size of the gravel of the subsequent flow is smaller than that of the primary debris flow, if the vertical interval of the horizontal wire 4 is narrowed toward the upper side in accordance with it, the gravel of the small diameter is also effectively captured. can do.
【００３１】柱材３間の開口の閉塞率は、従来の透過型
砂防ダムのように大径鋼管からなるつなぎ材を使用せ
ず、ワイヤーを使用するので大幅に下げることができ
る。従って、透過型砂防ダム本来の効果、すなわち、土
石流を阻止し、平常時および中小洪水時には土砂を下流
側に流下させて、計画的にダムの空容量を確保するとい
った効果が失われる恐れはない。しかも、堰上げ現象が
生じにくいので、副ダム等の施設が不要となり、ダム構
築費用が安価で済む。また、ワイヤーを使用するので、
この点からもダム構築費用が安価で済む。The blocking rate of the openings between the pillars 3 can be greatly reduced by using a wire instead of using a connecting material made of a large diameter steel pipe unlike the conventional transmission type sand dam. Therefore, there is no risk of losing the original effect of the transmission type sabo dam, that is, the effect of blocking the debris flow and causing the sediment to flow downstream during normal times and during small and medium-sized floods to systematically secure the empty capacity of the dam . Moreover, since the weiring phenomenon is unlikely to occur, facilities such as a secondary dam are not required, and the dam construction cost can be reduced. Also, since we use wires,
From this point as well, the dam construction cost is low.
【００３２】横ワイヤー４に変えて、鋼製ロッドを用い
ても良い。この場合には、図４から図７に示すように、
溝９Ａが形成されたブラケット９を柱材３の前面に溶接
等によって固定し、両端に座金１０を介してナット１１
がねじ込まれたロッド１２をブラケット９の溝９Ａ内に
落とし込んで、ロッド１２を柱材３間に固定する。この
ようにして、ロッド１２を柱材３の軸線方向に間隔をあ
けて複数本設ける。なお、溝９Ａを図７中一点鎖線で示
すように、逆Ｌ字型に形成すれば、ロッド１２の上方へ
の抜け出しを防止することができる。Instead of the horizontal wire 4, a steel rod may be used. In this case, as shown in FIGS. 4 to 7,
The bracket 9 in which the groove 9A is formed is fixed to the front surface of the column member 3 by welding or the like, and the nut 11 is provided at both ends via washers 10.
The rod 12 screwed in is dropped into the groove 9A of the bracket 9 to fix the rod 12 between the pillar members 3. In this way, a plurality of rods 12 are provided at intervals in the axial direction of the pillar 3. If the groove 9A is formed in an inverted L shape as shown by the alternate long and short dash line in FIG. 7, the rod 12 can be prevented from coming out upward.
【００３３】このように柱材３間にロッド１２が固定さ
れた透過型砂防ダムにおいても、ワイヤーの場合と同様
に、柱材間の開口の閉塞率を上げることなく、再流出の
土砂礫や第２次の土石流を捕捉することができ、しか
も、構築費用が安価で済む。In the transmission type erosion control dam in which the rods 12 are fixed between the pillars 3 as described above, as in the case of the wire, reflowing debris and gravel without increasing the closing rate of the openings between the pillars. The secondary debris flow can be captured, and the construction cost is low.
【００３４】ロッド１２の場合も図８に示すように、座
金１０とブラケット９の内面との間にゴム等の弾性材１
３を介在させれば、土石流の衝突エネルギーを緩衝する
効果が得られる。Also in the case of the rod 12, as shown in FIG. 8, an elastic material 1 such as rubber is provided between the washer 10 and the inner surface of the bracket 9.
If 3 is interposed, the effect of buffering the collision energy of the debris flow can be obtained.
【００３５】ロッド１２部分の開口（Ｓ）の幅（Ｗａ）
および高さ（Ｗｂ）は、上記（１）および（２）式を満
足するように設計する。Width (Wa) of the opening (S) in the rod 12 part
And the height (Wb) are designed so as to satisfy the above expressions (1) and (2).
【００３６】ロッド１２の上下方向の間隔を上方ほど狭
くすると、ワイヤーの場合と同様に、小径の礫も効果的
に捕捉することができる。If the vertical distance between the rods 12 is narrowed toward the upper side, small-diameter gravel can be effectively captured, as in the case of a wire.
【００３７】なお、この発明は、ワイヤーあるいはロッ
ドを使用することによって、大径鋼管を使用する場合に
比べて開口の閉塞率が大幅に上がることがないので、必
ずしも、上記条件を満足するようにワイヤーあるいはロ
ッドを柱材間に配する必要はなく、要は、開口にワイヤ
ーあるいはロッドを網状に配することによって、礫径の
小さい石であっても、開口の閉塞率を上げることなく確
実に捕捉することができるのである。In the present invention, the use of the wire or the rod does not significantly increase the blockage ratio of the opening as compared with the case of using the large diameter steel pipe, so that the above condition is not always satisfied. It is not necessary to arrange wires or rods between the pillars, in essence, by arranging the wires or rods in the openings in a net-like manner, it is possible to ensure that even stones with small gravel diameters do not increase the closing rate of the openings. It can be captured.
【００３８】以上は、柱材を間隔をあけて基礎コンクリ
ート上に固定したものからなる透過型砂防ダムの場合で
あるが、図９に示すように、梁材やつなぎ材を用いた別
の透過型砂防ダムであっても良いことはいうまでもな
い。The above is the case of the transmission type erosion control dam which consists of pillars fixed on the concrete foundation at intervals. As shown in FIG. 9, another transmission using a beam or a connecting material is used. It goes without saying that it may be a type sabo dam.
【００３９】[0039]
【発明の効果】以上説明したように、この発明によれ
ば、柱材間に横ワイヤーあるいはロッドを設け、これを
柱材の軸線方向に間隔をあけて複数本設けることによっ
て、柱材間の開口の閉塞率を上げることなく、再流出の
土砂礫や第２次の土石流を捕捉することができ、しか
も、閉塞率が上がらないので、堰上げ現象が生じず、従
って、副ダム等の設備が不要となるので、構築費用が安
価で済む。さらに、横ワイヤーあるいはロッドを使用す
るので、この点からも従来の大径鋼管を使用した場合に
比べて、構築費用が安価で済むといった有用な効果がも
たらされる。As described above, according to the present invention, the transverse wires or rods are provided between the pillars, and a plurality of the transverse wires or rods are provided at intervals in the axial direction of the pillars to thereby provide a space between the pillars. Re-flowing debris and secondary debris flow can be captured without increasing the blockage rate of the opening, and since the blockage rate does not increase, weir phenomenon does not occur, and therefore equipment such as secondary dam Since it is unnecessary, the construction cost is low. Further, since the horizontal wire or the rod is used, this also brings about a useful effect that the construction cost is lower than that in the case of using the conventional large-diameter steel pipe.
【図１】請求項１に係る発明の透過型砂防ダムを示す概
略正面図である。FIG. 1 is a schematic front view showing a transparent sabo dam of the invention according to claim 1.
【図２】ワイヤー端部の固定構造を示す断面図である。FIG. 2 is a cross-sectional view showing a fixing structure of a wire end portion.
【図３】請求項４に係る発明の透過型砂防ダムを示す概
略正面図である。FIG. 3 is a schematic front view showing a transparent sabo dam of the invention according to claim 4.
【図４】請求項５に係る発明の透過型砂防ダムを示す概
略正面図である。FIG. 4 is a schematic front view showing a transparent sabo dam of the invention according to claim 5.
【図５】請求項５に係る発明の透過型砂防ダムを示す概
略平面図である。FIG. 5 is a schematic plan view showing a transmission type erosion control dam of the invention according to claim 5;
【図６】ロッドの固定構造を示す断面図である。FIG. 6 is a cross-sectional view showing a fixing structure of a rod.
【図７】ロッド取り付け用ブラケットを示す斜視図であ
る。FIG. 7 is a perspective view showing a rod mounting bracket.
【図８】ロッドの他の固定構造を示す断面図である。FIG. 8 is a cross-sectional view showing another fixing structure of the rod.
【図９】従来の透過型砂防ダムを示す概略斜視図であ
る。FIG. 9 is a schematic perspective view showing a conventional transmission type erosion control dam.
【図１０】閉塞率の説明図である。FIG. 10 is an explanatory diagram of a blockage rate.
１：透過型砂防ダム ２：基礎コンクリート ３：柱材 ４：横ワイヤー ５：索端ボルト ６：座金 ７：突起部材 ８：縦ワイヤー ９：ブラケット ９Ａ：溝 １０：座金 １１：ナット １２：ロッド １３：弾性材 ２１：基礎コンクリート ２２：上流側柱材 ２３：下流側柱材 ２４：梁材 ２５：上流側つなぎ材 ２６：下流側つなぎ材 1: Transparent Sabo dam 2: Foundation concrete 3: Pillar material 4: Horizontal wire 5: Cable end bolt 6: Washer 7: Projection member 8: Vertical wire 9: Bracket 9A: groove 10: Washer 11: Nut 12: Rod 13: Elastic material 21: Foundation concrete 22: Upstream column material 23: Downstream column material 24: Beam material 25: Upstream side tie material 26: Downstream tie material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 福知 脩 神奈川県藤沢市片瀬山５−１−11 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Fukuchi 5-1-11 Kataseyama, Fujisawa City, Kanagawa Prefecture
Claims (7)
の柱材を有する透過型砂防ダムにおいて、 前記柱材間に横ワイヤーが張り渡され、前記横ワイヤー
は、前記柱材の軸線方向に間隔をあけて複数本設けられ
ていることを特徴とする透過型砂防ダム。1. A transmission type erosion control dam having a plurality of pillar members fixed to a foundation at intervals, wherein a horizontal wire is stretched between the pillar members, and the lateral wire is an axis line of the pillar member. A transmission-type erosion control dam, characterized in that a plurality of sabo dams are provided at intervals in the direction.
記柱材間に張り渡されていることを特徴とする、請求項
１記載の透過型砂防ダム。2. The transmission type erosion control dam according to claim 1, wherein the horizontal wire is stretched between the pillar members with a slack.
方ほど狭くなっていることを特徴とする、請求項１また
は２記載の透過型砂防ダム。3. The transmission type erosion control dam according to claim 1 or 2, wherein a vertical interval between the horizontal wires is narrowed upward.
によって連結されていることを特徴とする、請求項１か
ら３の内の何れか１つに記載の透過型砂防ダム。4. The transparent erosion control dam according to claim 1, wherein upper and lower portions of the horizontal wire are connected by a vertical wire.
の柱材を有する透過型砂防ダムにおいて、 前記柱材間にロッドが固定され、前記ロッドは、前記柱
材の軸線方向に間隔をあけて複数本設けられていること
を特徴とする透過型砂防ダム。5. A transmission type erosion control dam having a plurality of pillar members fixed on a foundation at intervals, wherein rods are fixed between the pillar members, and the rods are arranged in the axial direction of the pillar members. A transmission-type erosion control dam, which is characterized in that a plurality of holes are provided.
ど狭くなっていることを特徴とする、請求項５記載の透
過型砂防ダム。6. The transmission type erosion control dam according to claim 5, wherein an interval between the rods in the vertical direction is narrowed upward.
に取り付けられていることを特徴とする、請求項５また
は６記載の透過型砂防ダム。7. The transmission type sand control dam according to claim 5, wherein the rod is attached to the column member via an elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001248240A JP2003055941A (en) | 2001-08-17 | 2001-08-17 | Permeable check dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001248240A JP2003055941A (en) | 2001-08-17 | 2001-08-17 | Permeable check dam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003055941A true JP2003055941A (en) | 2003-02-26 |
Family
ID=19077437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001248240A Pending JP2003055941A (en) | 2001-08-17 | 2001-08-17 | Permeable check dam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003055941A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007056488A (en) * | 2005-08-23 | 2007-03-08 | Kobe Steel Ltd | Permeable check dam and its sediment capture member |
| KR100863486B1 (en) * | 2008-05-09 | 2008-10-17 | 대한민국 | Rhombic dam |
| JP2009030274A (en) * | 2007-07-25 | 2009-02-12 | Nippon Steel & Sumikin Metal Products Co Ltd | Permeable check dam |
| JP2010059647A (en) * | 2008-09-02 | 2010-03-18 | Nippon Steel & Sumikin Metal Products Co Ltd | Steel slit dam and method of repairing the same |
| KR200452943Y1 (en) | 2010-07-13 | 2011-03-29 | 니스코 주식회사 | Butler's Square Dam with Mixed Screen |
| JP2011074577A (en) * | 2009-09-29 | 2011-04-14 | Nippon Steel & Sumikin Metal Products Co Ltd | Steel slit dam, gravel body capture member for use in the same, and method for mounting the gravel body capture member |
| KR101170789B1 (en) * | 2010-01-15 | 2012-08-02 | 영남대학교 산학협력단 | Complex debris barrier of eco-friendly |
| KR101289723B1 (en) * | 2012-12-26 | 2013-07-26 | 산림조합중앙회 | Debris barrier capable of preserving scenery |
| CN103882835A (en) * | 2014-04-09 | 2014-06-25 | 中国水利水电第七工程局有限公司 | Closure building on wide and deep soft foundation river |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| JP2010059647A (en) * | 2008-09-02 | 2010-03-18 | Nippon Steel & Sumikin Metal Products Co Ltd | Steel slit dam and method of repairing the same |
| JP2011074577A (en) * | 2009-09-29 | 2011-04-14 | Nippon Steel & Sumikin Metal Products Co Ltd | Steel slit dam, gravel body capture member for use in the same, and method for mounting the gravel body capture member |
| KR101170789B1 (en) * | 2010-01-15 | 2012-08-02 | 영남대학교 산학협력단 | Complex debris barrier of eco-friendly |
| KR200452943Y1 (en) | 2010-07-13 | 2011-03-29 | 니스코 주식회사 | Butler's Square Dam with Mixed Screen |
| KR101289723B1 (en) * | 2012-12-26 | 2013-07-26 | 산림조합중앙회 | Debris barrier capable of preserving scenery |
| CN103882835A (en) * | 2014-04-09 | 2014-06-25 | 中国水利水电第七工程局有限公司 | Closure building on wide and deep soft foundation river |
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