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JP4891723B2 |
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JP4884310B2 |
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JP4869085B2 |
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JP2012017599A |
To provide an emergency water way which passes water from upstream of a river to the sea for preventing floods and can be used as a road when no flood occurs, considering that conventional rivers have had floods occasionally and the floo...
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JP4853709B2 |
To provide a means, whereby when a plurality of seashore installation members are connected to one another to make an artificial reef, a submerged mattress, a fish path, or a shore protection member, the connecting of the seashore instal...
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JP4823196B2 |
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JP4799639B2 |
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JP4792579B2 |
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JP4758882B2 |
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JP4746132B2 |
Fishways of turbine structures and gate structures for environmentally-friendly tidal power plant through which fish can pass through are provided. The fishway comprises of sea side fishways and lake side fishways to allow fish to move b...
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JP4738168B2 |
To provide energy dissipation works capable of making energy dissipation of also force of a very fast-flowing water without making any shaft or any height difference between a spillway and a flood way. The energy dissipation works are in...
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JP2011140823A |
To provide an inexpensive and simple structured drainage flume which is equipped with a habitat environment of fresh-water animals and plants.In a structure of this drainage flume 1, at least one weir column body 20, which has a predeter...
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JP4723214B2 |
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JP2011132697A |
To provide a new erect fish way capable of being easily installed without the need for a wide installation space.A plurality of units 1, 1', 1" and 1'", which are formed like a container having a top surface opened in an L-shape and insi...
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JP4703177B2 |
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JP2011099213A |
To provide a structure of a headrace for a water gauge capable of maintaining a measurement accuracy for the water level of a river by providing, to a headrace part, a member for preventing sediment and the like from easily flowing into ...
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JP4678893B1 |
To provide a water-intake mechanism of a check dam, which hardly requires maintenance by virtue of structural simplicity, and which can be used over a long period of time because it is hardly broken by driftwood, rocks and the like, drif...
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JP4675061B2 |
To provide a suction flowing facility for a deposit, by which a sediment sucked into a closed water way is made to flow more efficiently, a flowing water way is not closed even when the flowing water way sucks soil and sands and dusts, a...
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JP4663145B2 |
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JP4658880B2 |
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JP4610292B2 |
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JP2011000492A |
To provide a defoaming apparatus capable of deforming without power.The deforming apparatus 50 is for defoaming bubbles produced when sea water discharged from a power plant facility is discharged from an outlet arranged at a position hi...
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JP4603948B2 |
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JP4547699B2 |
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JP3162086U |
To provide an assembled fishway which is easy to transport, install, repair and remove, and can be installed in many places. A bottom plate 12 and side wall plates 13 and 14 provided on both left and right sides of the bottom plate 12 ar...
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JP4526761B2 |
A screen assembly in which the screen ( 10 ) is in the form of an inverted semi-circular trough the foul flow (A) to be screened approaching the underside of the screen so that debris which is filtered falls away from the screen by gravi...
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JP4522338B2 |
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JP2010163866A |
To provide a corner fish passage capable of forming a region of a gentle stream and suitable as a pathway for fish without forming an independent stream for a fish passage. The fish passage is formed at the bottom wall of a water passage...
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JP2010165279A |
To provide a discharge alarm device, capable of quickly notifying a monitoring station of an abnormality of equipment of a discharge alarm station. The discharge alarm device 20 is disclosed, which is installed in rivers downstream of da...
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JP4511416B2 |
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JP4500064B2 |
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JP4491097B2 |
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JP4480867B2 |
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JP2010112130A |
To provide a new method for repairing a bank having a flow guide section.A pair of rails 10 are suspended along the longitudinal direction of a top end T, and a support rail 20 movable along the pair of rails 10 is suspended to be laid o...
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JP4457384B2 |
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JP4456346B2 |
To provide a deep aeration device devised so as to make the length of an inner cylinder as short as possible to develop an aeration function until a water level falls down to the level corresponding to a shortened length of the inner cyl...
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JPWO2008068872A1 |
[Purpose] If clean sewage is discharged into a clean river, the clean river will be polluted. For this reason, it is intended to highly purify the discharged sewage by an advanced purification device for sewage using a fishway with a con...
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JP4429360B2 |
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JP4419340B2 |
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JP4411418B2 |
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JP2010001669A |
To provide a hydroelectric generating system which can synthetically and efficiently operate each hydroelectric generating equipment.This hydroelectric generating system, in which the plurality of pieces 1 and 2 of hydroelectric generati...
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JP2009287208A |
To provide a new spiral fishladder capable of being easily installed without the need for a wide installation space.A plurality of units 4a, which are formed like a container with a top surface opened in a fan shape, are connected in a s...
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JP4380005B2 |
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JP4370044B2 |
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JP4366829B2 |
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JP4368382B2 |
The invention relates to a cleaning device for a blocked trash screen (14) through which waste water (2) flows in a waste water installation, and which is used to extract contaminants carried by the waste water (2). The inventive cleanin...
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JP4360743B2 |
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JP4356472B2 |
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JP2009221713A |
To apply streambed protection to a relatively small-scale river, and to create a river channel having a shoal, a pool and a curved flow such as those of a natural river.When a channel 23 for a mountain stream 20 of the river is formed, s...
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JP4237228B2 |
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