JP4113734B2 - Transmission type sabo dam - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transmission-type sabo dam, and more particularly to a transmission-type sabo dam characterized by a structure that facilitates the work of removing accumulated debris. More specifically, the present invention includes a gate made of a member suspended from the top slab at a constant interval in the river transverse direction. The gate has a buffering function against a collision of debris and is simple. It is related with the transmission type sabo dam which can be made into the state which opened and opened the opening part.
[0002]
[Prior art]
Conventionally, in a debris flow section of a mountain stream where debris flow occurs, the storage capacity of the next debris flow for the purpose of capturing debris flow, driftwood, etc. or reducing the peak flow of debris flow, and without depositing with small and medium water discharge In order to maintain this, transmission type sabo dams are installed in various places.
[0003]
Such permeable sabo dams not only in the debris flow section, but also in the headwater section, in the rivers where there is constant water outflow, the river sediments flow down as much as possible in rivers where there is little sediment flow and the downstream bed is severely degraded. In the event of abnormal water discharge accompanied by water, it will function to adjust sediment runoff.
[0004]
Conventionally, the transmission type sabo dam includes a comb concrete slit dam or a transmission type steel sabo dam. A comb-shaped concrete slit dam is formed by opening a large number of slits in a normal impervious concrete sabo dam and forming a comb shape, and a large number of walls between the slits (slit walls) are reinforced concrete structures. The transmission-type steel sabo dam has a frame structure in which steel pipes are joined by flange joints, and is called a so-called lattice-shaped steel sabo dam, steel slit B type, or the like.
[0005]
Further, as a conventional sabo dam, a structure in which a plurality of spacing members are held by wires or the like in the opening and suspended on both banks or a main rope stretched between both banks is disclosed in Japanese Patent Laid-Open No. 10-60866. It is described in Kaihei 9-273137, JP-A-9-273138, and the like.
[0006]
[Problems to be solved by the invention]
However, the comb-shaped concrete slit dam in the conventional transmission sabo dam has a slit wall fixed structure made of reinforced concrete, and the sabo dam described in the above gazette is provided in the opening to receive debris and driftwood. Since the shaped member has a fixed structure, it has the following problems.
[0007]
(1) When earth and sand have accumulated in the dam and it is necessary to remove these earth and sand, the opening between the concrete side walls on both banks should be completely open. Although it is easy to remove earth and sand, in the conventional structure, the slit wall and the lattice-like member are in the way and it is difficult to remove the earth and sand. Also, conventionally, when removing sedimentary sediment, construct a detour road to the upstream of the dam, remove the permeable part of the dam, and then eliminate it by blasting debris accumulated in the dam, Furthermore, it was accompanied by work such as re-installing the transmission part, which required considerable work.
[0008]
(2) When a large rock or the like collides with a slit wall or a lattice-like member, it is easily damaged because it receives the impact force directly. Even if it is not damaged, the cross section is reduced due to the wear of the concrete on the side surface of the slit portion, and the resistance to impact is reduced by the cold joint generated at the horizontal joint of the concrete.
[0009]
(3) Since the structure itself uses reinforcement and formwork, the construction cost increases due to complicated design and construction. In addition, since it is a fixed structure, it requires extensive repair and maintenance against partial damage and the like, and has a structure with little variability and flexibility.
[0010]
An object of the present invention is to solve the problems of the comb-shaped concrete slit dam in the conventional transmission type dam, and to spread the transmission type sabo dam. In particular, it has a structure that makes it easy to remove the accumulated sediment, and it has a reliable structure that cushions the impact force of the debris and is hard to break, yet it is simple and can reduce construction costs. It is an object to realize a transmission type sabo dam with a highly flexible gate.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a concrete structure comprising a bottom portion formed in the transverse direction of a river, a pair of side walls, and a top slab connecting between the upper portions of the pair of side walls. In a permeable sabo dam with an opening for passing running water at the center of the chain, a chain suspended tire pile consisting of a plurality of tires suspended by a chain suspended from the top slab is crossed in the river crossing direction. Provided with a plurality of chain-suspended tire pile gates provided at regular intervals, the tire is filled with sand, mortar or concrete, or is not filled with a transmission type sabo dam, provide.
[0012]
In order to solve the above-mentioned problems, the present invention provides a concrete structure comprising a bottom portion formed in the transverse direction of a river, a pair of side walls, and a top slab connecting between the upper portions of the pair of side walls. In a transmission type sabo dam equipped with an opening for passing running water at the center of the chain, a chain suspended steel pipe made of a steel pipe suspended by a chain suspended from the top slab is spaced at a certain interval in the river transverse direction. A plurality of chain-suspended steel pipe gates are provided, and the steel pipe is filled with sand, mortar, or concrete, or is not filled with a transmission type sabo dam.
[0013]
The chain suspended from the top end slab may be configured to be mounted with the cushioning material interposed so as to be cushioned by the cushioning material at at least one of the upper end and the lower end thereof.
[0014]
The chain suspended from the top end slab may have a configuration in which a plurality of upstream and downstream sides are alternately arranged so as to be arranged in a staggered pattern in the river transverse direction.
[0015]
The steel pipe inserted into the chain suspended from the top end slab may use a steel pipe divided into a plurality of parts.
[0016]
In order to solve the above-mentioned problems, the present invention provides a concrete structure comprising a bottom portion formed in the transverse direction of a river, a pair of side walls, and a top slab connecting between the upper portions of the pair of side walls. In the transmission type sabo dam having an opening for passing running water at the center of the slab, a plurality of chains suspended from the top slab are provided at regular intervals in the river transverse direction, In addition, steel pipes that are horizontally attached in a comb shape are provided at a plurality of intervals along the longitudinal direction of the chain to provide a chain suspension horizontal steel pipe interdigital gate, and the steel pipe is filled with sand, mortar, or concrete. Provided is a transmission type sabo dam characterized in that the sabo dam is one that is not filled or not filled.
[0017]
The upper end of the chain suspended from the top end slab is detachably attached to the top end slab or to a winding column fixed to the top end slab, and the lower end of the chain is fixed to the bottom portion and attached to and detached from the top end slab. It is good also as a structure attached | placed in the free state which is attached possible or a weight is attached or not attached.
[0018]
The lower portions of the plurality of chains suspended from the top end slab are each set to have a length lying on the bottom, and the plurality of steel pipes that are transversely attached to the plurality of chains lying on the bottom are spaced apart from each other in the longitudinal direction of the chain. It is good also as a structure attached to the space | interval narrower than the said some steel pipe attached transversely to the part suspended from the said top end slab.
[0019]
In order to solve the above-mentioned problems, the present invention provides a concrete structure comprising a bottom portion formed in the transverse direction of a river, a pair of side walls, and a top slab connecting between the upper portions of the pair of side walls. In a transmission-type sabo dam equipped with an opening for passing running water at the center of the slab, a vertical beam that is inserted through the hole penetrating the top slab and inserted to the bottom and can be extracted upwards, A transmission-type sabo dam is provided in which a plurality of beam gates are provided at regular intervals.
[0020]
The vertical beam may be supported so as to be buffered on the back side by a cushioning material provided on the downstream side in at least one of the top slab and the bottom.
[0021]
The vertical beam is made of steel and may be reinforced with mortar or concrete.
[0022]
A plurality of the vertical beams may be arranged so as to be alternately arranged on the upstream side and the downstream side so as to be arranged in a staggered manner in the river transverse direction.
[0023]
The said opening part is good also as a structure which is partitioned off by the 1 or several partition, and has a some division | segmentation opening part.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a transmission sabo dam according to the present invention will be described in detail with reference to the drawings.
[0025]
In the transmission type sabo dam according to the present invention, an integral concrete structure formed in the crossing direction of the river is formed. This concrete structure has a bottom portion (in the following examples, “basic concrete”). On the top, a pair of left and right side walls (called “concrete side walls” in the following embodiments) provided at intervals corresponding to the river width in the transverse direction of the river are formed. It is an integral concrete structure in which a top end slab is installed between the upper parts of a pair of left and right concrete side walls, and has an opening for flowing water at the center.
[0026]
Through this opening, debris that does not cause harm to the downstream portion is allowed to flow, and large debris, driftwood, etc. are deposited and accumulated, and are removed by appropriate removal operations. The characteristic structure of the transmission type sabo dam according to the present invention will be specifically described in the following Examples 1 to 5 and modifications thereof.
[0027]
(Example 1)
1-3 is a figure explaining Example 1 of the transmission type sabo dam which concerns on this invention. FIG. 1A is a view of the transmission type sabo dam viewed from the downstream side, and FIG. 1B is a view of the transmission type sabo dam viewed from the upstream side. FIG. 2 (a) is a view showing a main part (an example of a tire pile), and FIG. 2 (b), FIG. 3 (a), and (b) are diagrams for explaining the configuration and operation of a transmission type sabo dam. is there.
[0028]
1 (a) and 1 (b), the transmission-type sabo dam 1 of Example 1 is provided on the foundation concrete 2 formed in the river crossing direction and provided at intervals corresponding to the river width in the river crossing direction. A pair of concrete side walls 3 and 3 are formed, and a concrete top slab 4 is installed between the upper portions of the pair of left and right concrete side walls 3 and 3 so that an opening 5 for passing running water is formed. The provided concrete structure 6 is constructed. Through this opening 5, running water and earth and sand in medium and small water flows.
[0029]
The characteristic structure of the transmission type sabo dam 1 is that a chain suspension tire pile is formed at an appropriate interval in the river transverse direction in an opening 5 formed by a top slab 4 and a pair of concrete side walls 3 and 3. This is that a chain suspension tire pile gate 8 formed by installing a plurality of 7 is provided. In this Example 1, the example which installed the three chain suspension tire piles 7 is shown. Further, in the first embodiment, a plurality of rows of side tire piles 9 are embedded on the inner surfaces of the pair of left and right concrete side walls 3 and 3 on the upstream and downstream sides.
[0030]
The chain suspension tire pile gate 8 will be described in detail. Each chain suspension tire pile 7 includes a tire pile 10 and a chain 11 that passes through the tire pile 10 and suspends the tire pile 10. The chain 11 is hung from the top end slab 4 and has a lower end. And the attachment structure of an upper end is mentioned later.
[0031]
The tire pile 10 is configured by stacking a plurality of tires 12. The tire 12 is preferably a waste tire. The tire 12 may be a stack of tires that are not filled with anything, or a tire that is filled with heavy objects such as sand, mortar, or concrete (referred to as a “stuffed tire”). Or the tire pile 10 is good also as a structure which mixed the tire which does not stuff concrete, and a stuffed tire, and arranged and stacked them suitably.
[0032]
In the case of the tire 12 not filled with concrete, the chain 11 is inserted into the hole at the center of the tire and stacked. In the case of a stuffed tire, an example is shown in FIG. 2 (a). A center hole 14 for inserting a chain is formed in the center of the stuffed tire filled with concrete 13, and the center hole 14 of a plurality of stuffed tires is passed through. The chain 11 is inserted and stacked.
[0033]
As shown in FIG. 2 (b), the lower end of the chain 11 may be fixed to an anchor 15 embedded in the foundation concrete 2, and although not shown, a hook is attached to the lower end of the chain 11 to form the foundation concrete. It is good also as a structure which attaches to the hook hook provided in the anchor upper end fixed to 2 so that engagement / disengagement is possible. Alternatively, as shown in FIG. 6 of Modification 1 to be described later, the lower part of the chain 11 is long enough to lie in the concave portion of the foundation concrete 2 and is attached to the anchor or in a free state, or a heavy object is attached to the lower end of the chain. It is good also as a structure which fixed and put | placed on the foundation concrete 2. FIG.
[0034]
In addition, in this Example 1, although the hollow 16 is formed in the upper surface of the foundation concrete 2, when this hollow 16 is used, the earth and sand and the debris which are shed from upstream will accumulate and will become flat. However, it is good also as a flat structure on the upper surface of the foundation concrete 2 without providing a hollow in particular. Further, the recess 16 may be a small recess as shown in FIG.
[0035]
As shown in FIGS. 1A, 1B, and 2B, the upper end of the chain 11 has a guide groove 17 (for example, formed in a vertical direction on the front surface (upstream surface) of the top slab 4). , Extending on the top slab 4 so as to be guided by a guide groove having a triangular cross section), and is further wound around and attached to a winding column 18. The winding column 18 is fixed vertically on the top end slab 4.
[0036]
When the chain 11 is wound around and attached to the winding column 18, the chain 11 can be wound around the winding column 18 as many times as necessary to adjust the bending degree (tensity) of the chain 11 with respect to the chain suspension tire pile 7. . Although not shown, if a hook is attached to the upper end of the chain 11 and a hook hook is provided on the winding column 18, the chain 11 is wrapped around the winding column 18 and then hooked on the hook hook so that the hook can be detached. Can be attached.
[0037]
Alternatively, the upper end of the chain 11 may be directly attached to the top end slab 4. That is, if a hook is attached to the upper end of the chain 11 and a hook hook is provided on the top end slab 4, the chain 11 is wound around the winding column 18 or directly, or the hook of the chain 11 is directly attached to the top end slab 4. It can be detachably attached by hooking it to the hook. In addition, you may attach so that attachment or detachment is possible using a pin, a shackle, etc. FIG.
[0038]
In Example 3 to be described later, the chain 11 suspended from the top slab 4 is mounted with a cushioning material so as to be cushioned by the cushioning material at at least one of the upper end and the lower end. However, in the first embodiment, the same configuration may be adopted. Thereby, in addition to the cushioning of the tire pile, the cushioning effect is further improved.
[0039]
Next, the side tire pile 9 on the inner surface of the pair of left and right concrete side walls 3 and 3 which is a characteristic configuration of the transmission type sabo dam 1 according to the present invention will be described. This side tire pile 9 also has a structure formed by stacking a plurality of tires that are not filled with concrete or packed with a plurality of tires and inserting a chain or a steel column through the center thereof.
[0040]
On the inner surface of the concrete side wall 3, a plurality of rows of curved surfaces are formed in the upstream and downstream directions to which approximately half of the side tire pile 9 is fitted. The plural rows of side tire piles 9 are arranged so that the outer surface side is fitted to the curved surface and the inner surface side faces the opening 5, and the lower end of the chain 11 or the steel column is fixed to the foundation concrete 2. Attached. In addition, although the side tire pile 9 attached to the inner surface of the concrete side wall 3 is provided in the first embodiment, it is also possible to provide only the chain suspension tire pile gate 8 without providing this. Good.
[0041]
Operation of Example 1:
The operation of the transmission type sabo dam according to the first embodiment having the above configuration will be described below. The chain suspension tire pile gate 8 is suspended as shown in FIGS. 1A and 1B, and the chain suspension tire pile 7 is placed on the foundation concrete 2. In this state, the chain suspension tire pile gate 8 allows small gravel, debris 19 and the like to permeate downstream and flow, but large debris 19 and driftwood and the like can be captured and function as a sabo dam. In this case, since the tires stacked on each other of the chain suspension tire pile 7 are not connected to each other, it is possible to effectively capture the earth and stone 19 between them.
[0042]
By the way, when the debris 19 or the like flows and collides with the chain suspension tire pile 7, the tire surface is deformed to buffer the impact of the debris 19, and the chain suspension tire pile 7 is shown in FIG. As shown, it is guided by the inserted chain 11 and swung up backward, the collision force is converted into the energy of the swung up position (position energy of the tire pile), and the shock is buffered. With respect to this potential energy, in the case of a stuffed tire stuffed with concrete 13 or the like, more potential energy is required. Therefore, the impact force is converted into potential energy and absorbed, and the buffering effect is great.
[0043]
In this way, the impact force applied to the chain suspension tire pile 7 by the earth and stone 19 is buffered, and the chain suspension tire pile 7 is not damaged. In the conventional comb-shaped gate of the transmission type sabo dam, the impact force of the earth and stone 19 is directly applied to the gate, and the gate may be damaged by the impact. In the present invention, the chain suspension tire pile 7 Such damage is prevented by the shock absorption by the shock due to the shock due to the deformation of the tire 12 and the conversion of the chain suspension tire pile 7 into the potential energy.
[0044]
FIG. 3A shows a state in which the earth and stone 19 is deposited on the transmission type sabo dam of the first embodiment. When removing this, the upper end of the chain 11 of each chain suspension tire pile 7 is removed from the winding column 18, and the tire pile is removed from the top slab 4 as shown in FIG. Keep it on the riverbed. Then, the opening part 5 of a dam will be in the state from which the chain suspension tire pile gate 8 was removed.
[0045]
In this state, heavy machinery and dump truck reciprocate the river bed upstream and downstream of the river, for example, a heavy machinery such as a backhoe is operated to remove the debris 19 and the accumulated debris 19 is removed. Thereafter, as in the construction, the tires 12 are inserted and stacked on the chain 11 having the lower end fixed to the concrete foundation to form the tire pile 10, and the upper end of the chain 11 is attached to the winding column 18 on the top slab 4. Thus, the chain suspended tire pile gate 8 is reconstructed.
[0046]
In addition, when constructing, removing and reconstructing the chain-suspended tire pile 7 as described above, or removing the debris 19, the heavy machinery works on the river bed from the downstream side of the river as described above. However, this situation is as shown in FIG. 6 for explaining a modified example 1 described later.
[0047]
In the transmission type sabo dam 1 of the first embodiment, by arranging the side tire piles 9 on the inner surfaces of the pair of left and right concrete side walls 3, the earth and stone 19 collides with the side tire piles 9 and is buffered. Further, it is possible to prevent the inner surface of the concrete side wall 3 from being damaged.
[0048]
Modification Example 1 of Example 1
4 to 6 are diagrams illustrating a first modification of the first embodiment. The transmission type dam 20 of the first modification has substantially the same configuration as that of the first embodiment. However, the transmission dam 20 is different in the following points and will be described below mainly on the different points. In the transmission type sabo dam 1 of Example 1 shown in FIGS. 1 to 3, when viewed from above, the plurality of chain suspended tire piles 7 are arranged in a row at intervals in the river transverse direction. The chain-suspended tire piles 7 are arranged flush with each other without shifting in the upstream and downstream direction of the river.
[0049]
However, in the transmission type sabo dam 20 of Modification 1 shown in FIGS. 4 to 6, the plurality of chain suspension tire piles 7 are vertically shifted in the upstream and downstream directions, and are not arranged flush with each other. . The transmission type sabo dam 20 of this modification 1 is a river as shown in FIGS. 4 (a), 4 (b) and 5 (a), 5 (b) when a plurality of chain suspension tire piles 7 are viewed from above. It is a structure arranged in a zigzag pattern in the river crossing direction so as to alternate in a zigzag shape in the crossing direction, that is, an upstream position and a downstream position in the upstream / downstream direction.
[0050]
Its specific structure is as follows. As shown in FIGS. 4 and 5, a plurality of chain insertion holes 21 are provided through the top slab 4 so as to form a zigzag pattern in the river transverse direction. The plurality of chain insertion holes 21 are spaced in the transverse direction of the top slab 4 so as to alternate between upstream and downstream positions in the upstream and downstream direction of the river, and correspond to the winding column 18. Is provided.
[0051]
The lower part 22 of each chain 11 is housed so as to be wound in a recess 23 in which the foundation concrete 2 is formed by an anchor, and the lower end thereof is attached to the anchor 15. A tire pile 10 filled with concrete is inserted into each chain 11, and the upper part of the chain 11 is wound around and attached to a winding column 18 through the chain insertion hole 21 of the top end slab 4. In this way, the plurality of chain suspension tire piles 7 are arranged alternately in the river crossing direction on the upstream side and the downstream side. Thereby, the chain suspension tire pile gate 24 suspended in a staggered arrangement is formed.
[0052]
Modification 1 The operation of the transmission type sabo dam 20 is substantially the same as that of the first embodiment. However, in the case of the modification 1, a plurality of chain-suspended tire piles 7 are alternately shifted in the upstream and downstream directions. Since more chain suspension tire piles 7 can be provided in the transverse direction of the river while maintaining a certain distance between adjacent chain suspension tire piles 7 and maintaining a sufficient flow of water flow, The buffer function and the capturing function can be enhanced, and the durability of the chain suspension tire pile 7 itself can be enhanced.
[0053]
At the time of constructing the transmission type dam according to the first modification, the heavy machinery 25 can approach the downstream of the river on the river bed as shown in FIG. In the modified example 1, since the chain suspended tire pile gate 8 can be removed, the same operation as that shown in FIG. 6 is performed when the captured earth and stone 19 is accumulated as shown in FIG. 5B. Moreover, the heavy machinery 25 can be approached from the downstream side of the river, and the debris 19 can be removed.
[0054]
In addition, in the modification 1 shown in FIGS. 4-6, although each tire pile is suspended with the two chains 11 and 11, it cannot be overemphasized that it may be suspended with the one chain 11. FIG. Further, without providing the chain insertion hole 21 in the top end slab 4, the depth of the guide groove 17 shown in FIG. The chain-suspended tire piles 7 can be arranged in a staggered pattern in the river crossing direction as viewed from above.
[0055]
Modification Example 2 of Example 1
FIG. 7 is a diagram illustrating a second modification of the first embodiment. The transmission-type sabo dam 29 of this modification 2 is substantially the same as the modification 1, but has a structure. However, when the width of the river that constructs the transmission-type sabo dam is large, the pair of side walls 3 of the transmission-type sabo dam, 3 is characterized in that a partition wall 30 is provided between the three. In this modified example 2, two partition walls 30 are provided and the opening 5 is divided into three segment openings 31, 32, 33. However, one or more partition walls 30 are provided. Each of the segment openings 31 to 33 is formed with a chain suspension tire pile gate 8 in which a plurality of chain suspension tire piles 7 having the same structure as that of the first modification are arranged in a staggered manner.
[0056]
The operation of the second modification is substantially the same as that of the first modification, but exhibits the following characteristics. When the river width is wide, the state in which the debris 19 accumulates and the momentum of the flow vary depending on the crossing direction of the river, and the damage situation is different. In this modified example 2, the section opening divided in the crossing direction of the river Since each of the chain suspension tire pile gates 8 is constructed independently, the removal work, reconstruction, maintenance, repair and the like of the earth and stone 19 are performed for each of the divided openings 31 to 33. In addition, it can be performed independently and flexibly at a necessary timing. Therefore, the cost required for removing the earth and stone 19 and repairing the gate maintenance can be reduced.
[0057]
(Example 2)
8 and 9 are diagrams for explaining Example 2 of the transmission type sabo dam according to the present invention. FIG. 8A is a view of the transmission type sabo dam 34 viewed from the downstream side, and FIG. 8B is a view of the transmission type sabo dam 34 viewed from the upstream side. Further, FIGS. 9A and 9B are diagrams for explaining the configuration and operation of the transmission type sabo dam 34.
[0058]
The transmission type sabo dam 34 of the second embodiment has substantially the same configuration as the transmission type sabo dam 1 of the first embodiment, but the chain 11 in which the tire pile 10 is hung from the top end slab 4 as in the first embodiment. As shown in FIGS. 8A and 8B, the chain 11 hung from the top slab 4 is inserted into the steel pipe 35 in the longitudinal direction and suspended. A chain suspension vertical steel pipe 36 is formed, and a chain suspension vertical steel pipe gate 37 formed by arranging a plurality of chain suspension vertical steel pipes 36 in the opening 5 of the transmission type sabo dam 34 is provided.
[0059]
The steel pipe 35 may be one in which nothing is filled, or as shown in FIG. 2A of the first embodiment, the inside of the steel pipe 35 is filled with concrete, sand, mortar, etc. What provided the hole 14 (stuffed steel pipe) may be sufficient. Although not shown, a hook may be attached to the lower end of the chain 11, a hook hook may be fixed to the anchor 15 fixed to the foundation concrete 2, and the hook may be hooked and detachably attached to the hook hook. Alternatively, the lower part of the chain 11 may be long enough to lie on the foundation concrete 2 with a margin, and may be configured to be placed on the foundation concrete 2 with a heavy object fixed to the free state or the lower end of the free as appropriate. .
[0060]
As shown in FIGS. 8B and 9B, the upper end of the chain 11 is formed in a guide groove 17 formed in a vertical direction on the front surface (upstream surface) of the top slab 4 as shown in FIGS. It extends on the top end slab 4 so as to be guided by (for example, a guide groove having a triangular cross section), and is further wound around and attached to a winding column 18 fixed to the top end slab 4. In this case, as in the first embodiment, although not shown, a hook is attached to the upper end of the chain 11 and the hook is detachably hooked and attached to a hook hook provided on the winding post 18 or the top end slab 4. Also good.
[0061]
In Example 3 to be described later, the chain 11 suspended from the top slab 4 is mounted with a cushioning material so as to be cushioned by the cushioning material at at least one of the upper end and the lower end. However, the same configuration may also be adopted in the second embodiment. Thereby, the buffering effect is further improved.
[0062]
Operation of Example 2:
In the transmission type sabo dam 34 of the second embodiment, small gravel and the like permeate downstream and flow, but large debris 19 and driftwood are captured. When the debris 19 or the like flows and collides with the chain suspension vertical steel pipe 36, the chain suspension vertical steel pipe 36 is swung up backward, and the impact force of the debris is the energy at the swung position (chain suspension vertical steel pipe). The impact energy is buffered. With respect to this potential energy, in the case of a stuffed steel pipe, more potential energy is required, so that the impact force is converted into potential energy and absorbed, and the buffering effect is large.
[0063]
FIG. 9A shows a state in which the captured earth and stone 19 is accumulated. When removing the earth and stone 19, the upper end of the suspension chain 11 is removed from the winding column 18 of the top end slab 4, and the lower end of the chain 11 is removed with or without removing the steel pipe 35 of the chain suspension vertical steel pipe 36 from the chain 11. Remove it from the anchor 15, transport it downstream with heavy machinery, and store it on the river bed a little downstream from the transmission sabo dam. Thereby, the chain suspension horizontal steel pipe gate shown in FIG.
[0064]
In this state, heavy machinery, dump trucks and the like reciprocate the river bed upstream and downstream of the river, for example, the arm with bucket of heavy machinery is operated to remove the debris 19, and the accumulated debris 19 is removed. Thereafter, the steel pipe is suspended by the chain 11 in the same manner as at the time of construction, and the chain suspended vertical steel pipe gate 37 is constructed.
[0065]
Modification Example 1 of Example 2
10 and 11 are diagrams showing a first modification of the second embodiment. The transmission type sabo dam 38 of the first modification of the second embodiment has substantially the same configuration as that of the second embodiment, but differs in the following points. The following description will be focused on the different points. In the transmission type sabo dam of Example 2 shown in FIGS. 8 and 9, when viewed from above, the plurality of chain suspended vertical steel pipes 36 are arranged in a row at intervals in the river transverse direction. The chain-suspended vertical steel pipes 36 are arranged flush with each other without being displaced in the upstream / downstream direction.
[0066]
However, in the transmission type sabo dam 38 of the first modification shown in FIGS. 10 and 11, the plurality of chain-suspended vertical steel pipes 36 are suspended from each other in the upstream and downstream directions, and are aligned on the same plane. Not. As shown in FIGS. 10 (a) and 10 (b), in the first modification, the plurality of chain-suspended vertical steel pipes 36 are staggered toward the river transverse direction as viewed from above, that is, upstream in the upstream / downstream direction. It is a structure that is arranged in a zigzag shape toward the river crossing direction so as to alternate between the position and the downstream position.
[0067]
The specific structure is the same as that of the first modification of the first embodiment. As shown in FIGS. 10 (b) and 11 (a), a plurality of chains are inserted into the top slab 4 in the river transverse direction. The holes 21 are provided in a zigzag manner so as to penetrate the winding pillars 18. Since the attachment structure of the lower end and the upper end of the chain 11 is the same as that of the first modification of the first embodiment, the description thereof is omitted here.
[0068]
The operation of the transmission type sabo dam 38 of this modification 1 is almost the same as that of the second embodiment, but in this modification 1, a plurality of chain suspension vertical steel pipes 36 are alternately shifted in the upstream and downstream directions. Therefore, it is possible to provide more (densely) chain suspended vertical steel pipes 36 in the river transverse direction while maintaining a certain distance between the chain suspended vertical steel pipes 36 adjacent to each other and sufficiently maintaining the passage of water flow. The buffering function and the capturing function with respect to 19 can be enhanced, and the durability of the chain suspension vertical steel pipe 36 itself can be enhanced.
[0069]
The chain-suspended vertical steel pipe of the first modification increases the weight by stuffing sand into the steel pipe 35. FIG. 11A shows a state in which the captured debris 19 is accumulated. When the debris 19 is removed, the upper end of the chain 11 is removed from the winding column 18 and the chain is suspended as described in the second embodiment. The work which carries the vertical steel pipe 36 to the bedside etc. of the downstream of a river is carried out.
[0070]
At this time, although not shown in detail, if the bottom lid 39 of the steel pipe 35 can be opened and closed by a hinge and can be opened and closed by the bottom lid opening and closing chain 40, as shown in FIG. In addition, the bottom lid 39 can be opened and removed, and the sand can be discharged, and the chain-suspended vertical steel pipe 36 becomes lighter, so that the operation becomes easier. Similarly to the chain 11, the bottom lid opening / closing chain 40 can be detachably attached to the winding column through the insertion hole 21 provided in the top plate slab 4.
[0071]
At the time of constructing the transmission type dam according to the first modification, the heavy machinery 25 can approach from the downstream of the river on the river bed as shown in FIG. In this modified example 1, since the chain-suspended vertical steel pipe 36 can be removed, even when the captured debris 19 accumulates as shown in FIG. 11 (a), as shown in FIG. 11 (b). Moreover, the heavy machinery 25 approaches from the downstream side of the river, and the removal work of the debris 19 can be performed.
[0072]
Variation 2 of the second embodiment:
In the transmission-type sabo dam of Example 2, each of the plurality of chain-suspended vertical steel pipes is suspended by passing one steel pipe through one chain 11, although not shown, It is good also as a structure which penetrated and suspended the some steel pipe divided | segmented into the chain 11 short. With such a configuration, since the steel pipe is divided into a plurality of parts, even if the earth and stone 19 collide, the steel pipe is bent so that excessive stress is not generated in the steel pipe, and the earth and stone 19 is finely entangled. Can be captured effectively.
[0073]
(Example 3)
12 and 13 are views for explaining a transmission type sabo dam 41 of Example 3 of the transmission type sabo dam according to the present invention. FIG. 12A is a view of the transmission type sabo dam 41 viewed from the downstream side, and FIG. 12B is a view of the transmission type sabo dam 41 viewed from the upstream side. FIGS. 13A and 13B are views for explaining the configuration and operation of the transmission-type sabo dam 41. FIG.
[0074]
The transmission type sabo dam 41 according to the third embodiment is similar to the transmission type sabo dam 34 according to the second embodiment, in which the steel pipe is suspended from the chain 11 suspended from the top slab 4. As shown in FIGS. 12 (a), 12 (b), and 13 (a), the steel pipes 35 are not suspended through the steel pipes 35 as shown in FIGS. A plurality of steel pipes 42 are horizontally suspended in the vertical direction (longitudinal direction of the chain 11) so as to cross the plurality of vertical chains 11 from the slab 4, as if iron. The koto is suspended as if suspended, thereby forming a chain-suspended horizontal steel pipe interdigital gate 43. The chain-suspended horizontal steel pipe interdigital gate 43 is disposed in the opening 5 for passing running water of the transmission-type sabo dam 41.
[0075]
The steel pipe 42 may be one in which nothing is filled, or may be one filled with sand, mortar, concrete, or the like (except for a through hole for inserting a chain).
[0076]
The plurality of chains 11 are formed longer than the length of the opening 5 in the vertical direction so that the lower portion 11 ′ lies on the foundation concrete 2. Further, a steel pipe 42 is attached to a lower portion 11 ′ of the chain 11 and also on a portion lying on the foundation concrete 2 so as to cross the plurality of chains 11.
[0077]
In addition, about the several steel pipe 42 attached to lower part 11 'of the chain 11, and the part which lies on the foundation concrete 2, the attachment space | interval of the longitudinal direction of the chain 11 is the chain 11 suspended from the top plate slab 4 It is good also as a structure by which a larger number of steel pipes are densely attached to the lower part of the chain 11 from the upper part at the space | interval narrower than the space | interval of the longitudinal direction of the steel pipe 42 attached to this part.
[0078]
A plurality of steel pipes 42 attached to the lower part 11 ′ of the chain 11 and lying on the foundation concrete 2 are formed on the foundation concrete 2 as shown in FIGS. 12 (a), 12 (b) and 13 (a). Lying. The plurality of steel pipes 42 lying on the foundation concrete 2 has a function of placing the chain suspension horizontal steel pipe interdigital gate 43 on the foundation concrete 2 as if it were a chain suspension horizontal steel pipe interdigital gate 43.
[0079]
In the present embodiment, a recess 44 having a width slightly smaller than the width of the opening 5 is formed on the upper surface of the foundation concrete 2, and the length of the plurality of steel pipes 42 lying on the foundation concrete 2 in the river transverse direction. Is slightly smaller than the width of the hollow portion 44 in the river crossing direction, so that a plurality of steel pipes enter the hollow portion 44 as shown in FIGS. 12 (a), 12 (b), and 13 (a). It is possible to catch the earth and stone 19 that is about to pass through the lower part of the chain-hanging horizontal steel pipe interdigital gate 43.
[0080]
In particular, as shown in FIG. 13 (b), even when the chain-suspended horizontal steel pipe interdigital gate 43 is pushed up downstream, the plurality of steel pipes 42 lying on the foundation concrete 2 perform the function of suspending the chain. It is possible to capture the earth and stone 19 that tries to pass through the bottom of the interdigital gate.
[0081]
The top end slab 4 is provided with a chain insertion hole 21 penetrating the top and bottom surfaces thereof, and the upper end of the chain 11 is attached to the winding column 18 by being wound around the chain insertion hole 21.
[0082]
Operation of Example 3:
Similarly to the second embodiment, the chain-suspended horizontal steel pipe interdigital gate 43 of the transmission type sabo dam passes small gravel and the like through downstream, but captures large debris 19 and driftwood. When the debris 19 or large rocks flow and collide with the chain-suspended horizontal steel pipe gate 43 42, the steel pipe 42 is swung up backward, and the collision force is the energy at the swung position (chain suspended horizontal steel pipe). The impact energy is buffered. With respect to this potential energy, in the case of a stuffed steel pipe, more potential energy is required, so that the impact force is converted into potential energy and absorbed, and the buffering effect is large.
[0083]
FIG. 13B shows a state in which the captured debris 19 is deposited. When removing the earth and stone 19, the upper end of the suspension chain 11 is removed from the winding column 18 of the top end slab 4, and the chain suspension horizontal steel pipe interdigital gate 43 is moved downstream from the downstream side by a heavy machine. Carry it and store it on the riverbed a little downstream from the transmission type sabo dam 41. As a result, the chain suspended horizontal steel pipe gate 43 is opened.
[0084]
In this state, as in the case of the first embodiment, heavy machinery and dump trucks reciprocate the river bed upstream and downstream of the river, for example, a heavy machinery such as a backhoe is operated to remove the debris 19, and the accumulated debris 19 is removed. Remove. Thereafter, similarly to the time of construction, the upper end of the chain 11 is attached to the winding column 18 of the top end slab, and the hanging chain hanging horizontal steel pipe interdigital gate 43 is constructed.
[0085]
Variation of Example 3:
FIG. 14 is a view showing a transmission type sabo dam 45 according to a modification of the third embodiment, which is substantially the same as the third embodiment, but in this modification, the upper end of the chain 11 suspended in the vertical direction is As in the first embodiment, as shown in FIGS. 14 (a) and 14 (b), it is guided by a guide groove 17 formed in the vertical direction on the front surface (upstream surface) of the top slab 4. It extends on the top end slab 4 and is further wound around and attached to a winding column 18. The winding column 18 is fixed vertically on the top end slab 4.
[0086]
Example 4
15 and 16 are diagrams for explaining a transmission type sabo dam 57 according to a fourth embodiment of the present invention. FIG. 15A is a view of the transmission type sabo dam 57 viewed from the downstream side, and FIG. 15B is a view of the transmission type sabo dam 57 viewed from the upstream side. FIG. 16 is a diagram for explaining the configuration and operation of the transmission type sabo dam 57.
[0087]
Similarly to Example 1, the transmission type sabo dam 57 of Example 4 is a pair of left and right concrete sides provided on the foundation concrete 2 formed in the river crossing direction at intervals corresponding to the river width in the river crossing direction. A concrete structure 6 having an opening 5 for passing running water is constructed by forming a part wall 3 and installing a top end slab 4 between the upper parts of the pair of left and right concrete side walls 3. Through this opening 5, running water and earth and sand in medium and small water flows.
[0088]
The characteristic configuration of the transmission type sabo dam according to the fourth embodiment of the present invention is that a plurality of vertical beams 58 are provided in the opening 5 of the concrete structure so as to be extracted at a predetermined interval in the river transverse direction. The beam gate 59 is provided, and a buffer material for buffering the upper and lower portions of the vertical beam 58 is provided.
[0089]
The vertical beam 58 uses a steel beam, and its cross-sectional shape can be various shapes such as a circle, a rectangle, and an H shape. The steel beam alone may be used, or in order to increase the strength, and the earth and stone 19 In order to convert and absorb a part of the impact force of the steel into kinetic energy, the steel beam may be filled with sand, mortar or concrete or attached.
[0090]
The cushioning material is provided in each of the top plate slab 4 and the foundation concrete 2 so as to be positioned on the back side of the vertical beam 58 at an appropriate interval in the transverse direction of the river. It has a function of buffering impact force caused by the colliding earth and stone 19 or the like. In the fourth embodiment, an example in which a beam gate 59 having three vertical beams 58 is installed is shown.
[0091]
Three through holes 60 are formed in the top plate slab 4 corresponding to the three vertical beams 58 of the beam gate 59. As shown in FIG. 15B, each of the three through holes 60 has a substantially T-shaped cross section. A vertical beam 58 is inserted through the I-shaped through-hole portion 61 of the T-shaped through-hole 60. As shown in FIGS. 15 (b) and 16, the cushioning material is provided with a pressure receiving plate 64 that abuts against the vertical beam 58 on the side wall surface 63 on the downstream side of the one-shaped through hole portion 62 of the T-shaped through hole 60. 65 is attached. As the cushioning material 65, an elastic fender or the like is used.
[0092]
The foundation concrete 2 is also provided with three T-shaped holes 66 corresponding to the three longitudinal beams 58. The lower end of the vertical beam 58 is inserted into the I-shaped hole portion 67 of the T-shaped hole 66. As shown in FIGS. 15 (b) and 16, a cushioning material 65 is provided with a pressure receiving plate 64 abutting against the vertical beam 58 on the side wall surface 69 on the downstream side of the one-shaped hole portion 68 of the T-shaped hole 66. It is installed. As the cushioning material 65, an elastic fender or the like is used.
[0093]
A plurality of vertical beams 58 are provided in the river crossing direction (three in this embodiment). The interval (pitch) of the vertical beams 58 in the river crossing direction depends on the installation environment conditions such as the size of the earth and stone 19 in the area. Depending on the environmental conditions, it may be designed at intervals suitable for such environmental conditions. Further, in some cases, it is conceivable to improve the capturing effect of the debris 19 by attaching a horizontal beam detachably between the vertical beams 58.
[0094]
Operation of Example 4:
Similarly to the first embodiment, the beam gate 59 of the transmission type sabo dam 57 of the fourth embodiment allows small gravel and the like to permeate downstream and flow, but captures large debris 19 and driftwood. When the large earth and stone 19 collides with the vertical beam 58, the impact force is applied to the vertical beam 58. The impact force is transmitted to the buffer material 65 via the pressure receiving plate 64 at the upper and lower portions of the vertical beam 58, and the buffer material 65 is deformed to absorb energy.
[0095]
In this way, the vertical beam 58 receives a large impact force from the earth and stone 19, but is buffered by the buffer material 65 at the upper and lower portions of the vertical beam 58, so that deformation is suppressed, the strength is small, and damage is small. So it can be reused.
[0096]
FIG. 16 shows a state in which the trapped debris 19 is deposited and an operation for removing it. In this work, first, the truck crane 70 is brought close to the downstream side of the transmission type sabo dam 57 using the river channel, a plurality of vertical beams 58 are extracted upward, and a bank, river bed, etc. in the vicinity of the transmission type sabo dam 57 are taken. Store in place. As a result, the beam gate 59 disappears from the opening 5 so that the gate gate 59 is opened, so that the debris 19 can be removed through the opening 5 by reciprocating heavy machinery, dumpers and the like up and down the riverbed. .
[0097]
After completion of the removal work of the debris 19, the stored vertical beam 58 is inserted downward from the through hole 60 of the top slab 4 by using the truck crane 70 as in the work shown in FIG. 16. The lower end is inserted into the hole 66 of the foundation concrete 2, and the beam gate 59 is constructed again as in the construction. It should be noted that the beam gate 59 is extracted and opened in this way, and after the removal work of the debris 19, a series of operations for reconstructing the structure of the beam gate 59 causes the debris 19 to be generated in a short time. It is done within the day. This transmission type sabo dam 57 has a structure suitable for such a short-term treatment.
[0098]
Modification Example 1 of Example 4
17 and 18 are diagrams showing a transmission type sabo dam 71 according to a first modification of the fourth embodiment. The first modification has substantially the same configuration as that of the fourth embodiment, but has the following features. That is, the top plate slab 4 is formed with a T-shaped through hole 60 as in the fourth embodiment, but a buffer material 72 is provided in one form of the through-hole portion of the T-shaped through hole 60. Along with the pressure receiving plate 73 in contact with the vertical beam 58 on the downstream side, it is supported so that information can be taken out and does not fall downward.
[0099]
Various support structures for supporting the cushioning material 72 and the pressure receiving plate 73 are conceivable. For example, as shown in enlarged views of main parts in FIGS. A pair of support rods 74 may be provided in the lower portion of 62 toward the upstream and downstream directions, and both ends thereof may be fixed in the concrete of the top slab 4. As the cushioning material 72, in the first modification, two sets of tire piles in which two tires 75 are stacked in the front-rear direction (up to four tires in total) are used.
[0100]
A groove 76 extending in the river transverse direction is formed on the upper surface of the foundation concrete 2, and a horizontal beam 77 for dispersing the impact force is movably loaded in the upstream and downstream directions in the groove 76. A plurality of cushioning materials 72 are inserted between the lateral beam 77 and the downstream surface of the groove 76. The plurality of cushioning materials 72 are inserted in a corresponding manner corresponding to the T-shaped through holes 60 formed in the top slab 4 respectively. The lower part of the vertical beam 58 acts on the plurality of cushioning materials 72 from the upstream side via the horizontal beam 77. In addition, as the buffer material 72 provided in the foundation concrete 2, in the second modification, a material in which two tires 75 are overlapped in the front-rear direction is used.
[0101]
Variation 2 of Embodiment 4:
In the transmission type sabo dam of Example 4, when viewed from above, the plurality of vertical beams 58 are arranged in a line at intervals in the river transverse direction. In short, the plurality of vertical beams 58 are shifted in the upstream and downstream directions. However, the plurality of vertical beams 58 may be arranged in a zigzag shape (zigzag shape) when viewed from above. As a specific structure, T-shaped through holes 60 are alternately formed on the upstream side and the downstream side, and are arranged in a staggered manner as viewed from above (in plan view).
[0102]
As mentioned above, although the embodiment of the transmission type sabo dam according to the present invention has been described based on the examples, the present invention is not particularly limited to such examples, and the technical matters described in the scope of the claims are described. It goes without saying that there are various embodiments within the scope.
[0103]
Moreover, although demonstrated in the modification 3 of Example 1, when the width | variety of the river which constructs | transmits a transmission type sabo dam is large, between the left-right paired side wall (side wall of both banks of a river), 1 Or it is good also as a structure which provided the some partition and divided | segmented the opening part 5 into the 2 or more division | segmentation opening part 5, However, The said Example 1-5 is also mentioned in the opening part 5 which has the some division | segmentation opening part 5 in this way. It goes without saying that these modifications can be applied.
[0104]
【The invention's effect】
According to the configuration of the present invention as described above, the following effects are produced.
(1) The gate provided in the opening is a gate comprising a tire pile suspended by a chain, a steel pipe and an interdigital gate, a vertical beam that can be pulled out, etc., all of which can be easily removed from the opening. ), When debris accumulates, the gate is opened and a heavy machine or the like passes through the opening so that the accumulated debris can be easily removed. Can be built.
[0105]
(2) Although the parts constituting the gate are most susceptible to damage by the sabo dam, in the present invention, since the gate has a buffer function, even if a large rock or the like collides, the impact force is effectively reduced. The beam gate has shock resistance and durability, is extremely resistant to breakage, has high reliability, and can reduce the number of maintenance compared to the conventional case.
[0106]
(3) Even if a part of the gate breaks, the chain suspension tire pile, vertical steel pipe, horizontal steel pipe, vertical beam, etc., which are constituent members, are built in a replaceable structure. Maintenance is easy.
[0107]
(4) As a cushioning material, waste tires and fenders can be used, and these are easily available. When used as a tire pile, the stacked tires may be suspended through a chain. Simple structure and easy to manufacture. In particular, in the present invention, if a waste tire is used as a cushioning material for a tire pile and a vertical beam, it can contribute to effective use of resources or environmental conservation.
[0108]
(5) Classifying earth and stones, allowing a small amount of harmless small-diameter gravel to pass through, capturing large rocks and driftwood, etc., and functioning as a sabo dam.
[Brief description of the drawings]
FIG. 1 is a perspective view of a transmission type sabo dam according to a first embodiment of the present invention.
FIG. 2 is a diagram for explaining a main part and an operation of the first embodiment.
FIG. 3 is a view for explaining the configuration and operation of the transmission type sabo dam of Example 1;
FIG. 4 is a perspective view of a first modification of the first embodiment of the transmission type sabo dam according to the present invention.
FIG. 5 is a diagram for explaining the configuration and operation of a first modification of the first embodiment.
6 is a diagram for explaining the operation of the first modification of the first embodiment. FIG.
FIG. 7 is a perspective view for explaining a second modification of the first embodiment of the transmission type sabo dam according to the present invention.
FIG. 8 is a perspective view of a transmission type sabo dam according to a second embodiment of the present invention.
FIG. 9 is a view for explaining the configuration and operation of the transmission type sabo dam of Example 2;
FIG. 10 is a perspective view of a first modification of the second embodiment of the transmission type sabo dam according to the present invention.
FIG. 11 is a diagram for explaining the operation of the first modification of the second embodiment.
FIG. 12 is a perspective view of a transmission type sabo dam according to a third embodiment of the present invention.
FIG. 13 is a view for explaining the configuration and operation of the transmission type sabo dam of Example 3;
FIG. 14 is a perspective view of a modified example of the transmission type sabo dam according to the third embodiment of the present invention.
FIG. 15 is a perspective view of a transmission type sabo dam according to a fourth embodiment of the present invention.
FIG. 16 is a view for explaining the operation of the transmission type sabo dam of Example 4;
FIG. 17 is a perspective view of a modified example of Embodiment 4 of the transmission type sabo dam according to the present invention.
FIG. 18 is a diagram illustrating a main part of a modification of the fourth embodiment.
[Explanation of symbols]
1 Transmission Sabo Dam of Example 1
2 Foundation concrete
3 concrete side walls
4 Top edge slab
5 openings
6 Concrete structures
7 Chain suspension tire pile
8 Chain suspended tire pile gate
9 Side tire pile
10 Tire pile
11 Chain
12 tires
13 Concrete
14 Center hole of stuffed tire
15 Anchor
16 Dimple on top of foundation concrete
17 Guide groove on the front of the top slab
18 Winding pillar
19 Earth and stone
20 Transmission Sabo Dam of Modification 1 of Example 1
21 Chain insertion hole
22 Lower chain
23 Concavities with foundation concrete
24 Chain suspended tire pile gate of Modification 1 of Embodiment 1
25 heavy machinery
29 Transmission-type Sabo Dam of Modification 2 of Example 1
30 Bulkhead
31, 32, 33 Section opening
34 Transmission type sabo dam of Example 2
35 steel pipe
36 Chain suspended vertical steel pipe
37 Chain suspended vertical steel pipe gate
38 Transmission type sabo dam of modification 1 of embodiment 2
39 Bottom cover of steel pipe
40 Bottom lid opening and closing chain
11 'Bottom of chain
41 Transmission Sabo Dam of Example 3
42 Steel pipe
43 Chain hanging horizontal steel pipe interdigital gate
44 Indentation on top surface of foundation concrete
45 Transmission type sabo dam of modification of Example 3
57 Transmission Sabo Dam of Example 4
58 Longitudinal beam
59 Beam Gate
60 Through hole
61 I-shaped through hole
62 One-shaped through hole portion
63 Side wall surface on the downstream side of the one-shaped through hole portion
64 Pressure plate
65 cushioning material
66 T-shaped hole
67 I-shaped hole part of T-shaped hole
68 One-shaped hole part of T-shaped hole
69 Side wall surface on the downstream side of a hole portion of one shape of a T-shaped hole
70 truck crane
71 Transmission type sabo dam of modification of Example 4
72 cushioning material
73 Pressure plate
74 Supporting cage
75 tires
76 Groove on top of foundation concrete
77 Horizontal Beam

Claims (13)

Opening for passage of flowing water in the central part of the concrete structure consisting of the base bottom formed in the transverse direction of the river, a pair of side walls and the top slab connecting the top of the pair of side walls In the transmission type sabo dam with
A chain suspension tire pile gate comprising a plurality of chain suspension tire piles composed of a plurality of tires suspended by a chain suspended from the top end slab is provided at a predetermined interval in the river transverse direction,
A transmission type sabo dam characterized in that the tire is filled or unfilled with sand, mortar or concrete. Opening for passage of flowing water in the central part of the concrete structure consisting of the base bottom formed in the transverse direction of the river, a pair of side walls and the top slab connecting the top of the pair of side walls In the transmission type sabo dam with
A chain suspension steel pipe gate provided with a plurality of chain suspension steel pipes made of a steel pipe suspended from a chain suspended from the top end slab at a predetermined interval in the river transverse direction,
A transmission type sabo dam characterized in that the steel pipe is filled or unfilled with sand, mortar or concrete. Chain that is hung down from the crest slabs claim 1 in at least one position of its upper and lower ends, as buffered by buffer material, characterized in that it is mounted interposed the buffer material Or the transmission type sabo dam of 2.   4. The transmission according to claim 1, 2, or 3, wherein the chain suspended from the top slab is alternately arranged in a plurality of upstream and downstream sides so as to be arranged in a staggered pattern in the river transverse direction. Mold sabo dam. 5. The transmission type sabo dam according to claim 2 , wherein the steel pipe suspended by a chain suspended from the top end slab is a steel pipe divided into a plurality of parts. Opening for passage of flowing water in the central part of the concrete structure consisting of the base bottom formed in the transverse direction of the river, a pair of side walls and the top slab connecting the top of the pair of side walls In the transmission type sabo dam with
A plurality of chains suspended from the top end slab are provided at regular intervals in the river transverse direction, and steel pipes attached to the plurality of chains in a horizontal and horizontal shape are arranged at intervals along the longitudinal direction of the chain. And a chain hanging horizontal steel pipe interdigital gate,
A transmission type sabo dam characterized in that the steel pipe is filled or unfilled with sand, mortar or concrete.   The upper end of the chain suspended from the top end slab is detachably attached to the top end slab or to a winding column fixed to the top end slab, and the lower end of the chain is fixed to the bottom portion and attached to and detached from the top end slab. The transmission type sabo dam according to any one of claims 1 to 6, wherein the transmission type sabo dam is placed in a free state where it can be attached or a weight is attached or not attached.   The lower portions of the plurality of chains suspended from the top end slab are each set to have a length lying on the bottom portion, and the plurality of steel pipes attached to the plurality of chains lying on the bottom portion are spaced apart from each other in the longitudinal direction of the chain. The transmission type sabo dam according to claim 6, wherein the sabo dam is attached at a narrower interval than the plurality of steel pipes that are transversely attached to a portion suspended from the top end slab. Opening for passage of flowing water in the central part of the concrete structure consisting of the base bottom formed in the transverse direction of the river, a pair of side walls and the top slab connecting the top of the pair of side walls In the transmission type sabo dam with
A beam gate provided with a plurality of vertical beams that are inserted into a hole penetrating the top end slab and inserted to the bottom and can be extracted upward is provided at a certain interval in the river transverse direction. Transmission type sabo dam.   10. The transmission type according to claim 9, wherein the vertical beam is supported so as to be buffered on the back side by a cushioning material provided on the downstream side in at least one of the top slab and the bottom. Sabo dam.   The transmission type sabo dam according to claim 9 or 10, wherein the vertical beam is made of steel and reinforced with mortar or concrete. The transmission type sabo according to claim 9, 10 or 11, wherein a plurality of the vertical beams are arranged so as to be alternately arranged on the upstream side and the downstream side so as to be arranged in a staggered pattern in the river transverse direction. dam.   The transmission type sabo dam according to any one of claims 1 to 12, wherein the opening is partitioned by one or a plurality of partition walls and has a plurality of section openings.

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