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JP2533697Y2 |
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JP2533696Y2 |
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JP2533694Y2 |
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JP2533695Y2 |
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JP2533698Y2 |
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JP2533691Y2 |
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JP2533692Y2 |
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JP2533693Y2 |
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JP2598743B2 |
PURPOSE: To improve the constructing efficiency and abrasion resistance of a structure, by a method wherein asphalt is placed on an apron and asphalt mats are laid down thereon, in each of which a plurality of projections such as stones ...
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JP2589654B2 |
PURPOSE: To enable fishes to go upstream from any position of an ascending part having a fan-like curved surface of a an-shaped fishway and make the volume of the fan-shaped fishway small by providing the fan-shaped fishway having the as...
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JPH0959964A |
To enable ascension to the bank-body upstream side of ascending fishes, and to enable conveyance to the bank-body downstream side of soil and sand, dust, etc., dredged in a dam lake by non-power or low power. When buckets 10 for a dam fi...
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JP2585966B2 |
PURPOSE: To effectively construct a fishway which well suits different conditions, by forming a plurality of insert grooves at the surfaces of a waterway so that it is possible to mount removably a plurality of bulkheads selectively havi...
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JP2582620B2 |
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JP2577704B2 |
PURPOSE: To certainly enable fishes to swim upstream even in the case of a high step difference by providing an inclined and upstream swimming gutter between a water overflowing wall of each water reservoir chamber and a lower step water...
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JPH0921127A |
To prevent decrease of the storage capacity of a dam by discharging the sediment in the dam reservoir to the downstream of the river and cope with scouring of the river bed in the downstream of the dam, adverse effects against bridge fou...
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JPH0913352A |
PURPOSE: To make it possible to store earth and sand which are flowed down without affecting an ecosystem and carry out the stored earth and sand. CONSTITUTION: A central dike is provided in a river 12, thereby doubling the river. During...
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JPH093864A |
PURPOSE: To transfer not only fish going upstream but also fish going downstream, by attaching a fish lamp at a fish container or the transfer position of the container and installing an opening/closing screen in the container. CONSTITUT...
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JPH093863A |
PURPOSE: To continuously carry out a series of works from containing of fish to discharging thereof and from a collecting position of fish to a discharging position of fish, and make the equipment applicable for any kinds of dams without...
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JP2566381B2 |
PURPOSE: To miniaturize fish way equipment and not only use the fish way as an intake device in common but also reduce the cost and promote going-up of fish. CONSTITUTION: When a fish way device is used as an intake device, a high pressu...
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JP2567342B2 |
PURPOSE: To maintain and control a coduit to help going-upstream of fish by forming the conduit by arranging a water intake apron on the upstream side of a floor stopper, forming a part of the floor stopper as a notch and forming the jus...
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JP2520990Y2 |
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JP2520065Y2 |
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JPH08326042A |
PURPOSE: To design and execute arbitrary shapes easily in conformity with the states of each river, and to correspond to the designed uplift of the rivers. CONSTITUTION: Drag preventive materials 18 are laid on a river-bed 6 (a slope), a...
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JPH08311847A |
PURPOSE: To enable automatic removal of sediment accumulated on the front of an intake dam bank, reduction and omission of sand basin capacity, and to reduce construction cost in an intake weir used in run-off-river type power generation...
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JPH08302657A |
PURPOSE: To eliminate use of a limit switch and stop the cage of a dust removing machine at any desired position by setting the wind-down target position of the cage depending upon the water level sensing value and the depth from the wat...
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JP2552616B2 |
PURPOSE: To shorten a water channel of a fishway, to curtail expenses of construction and, at the same time, to make it possible to promote guidance efficiency of fish. CONSTITUTION: A flow control gate 11 interlocking with a door body 3...
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JP2517161Y2 |
A device for collecting and discharging solid refuse matter, flowing in sewers includes a grid (15) comprising stationary and displaceable bars (17, 18). The edges of the bars turned towards the flow of water are stepped and the terraces...
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JP2545752B2 |
PURPOSE: To provide a selective inflow device without the provision of an introducing water channel constructed of concrete being damageable in the case of a great flood and at a low cost, and moreover prevents the direct mixing of inflo...
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JPH08269933A |
PURPOSE: To lay a driving channel in water without interfering with utilizing a dam and without requiring underwater works. CONSTITUTION: After plural driving channel-blocks 1 are flexibly connected to each other by pins 3 and connecting...
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JPH08509277A |
PCT No. PCT/SE94/00062 Sec. 371 Date Sep. 22, 1995 Sec. 102(e) Date Sep. 22, 1995 PCT Filed Jan. 28, 1994 PCT Pub. No. WO94/24373 PCT Pub. Date Oct. 27, 1994A strainer for removing particles from a horizontal flow of effluent comprises a...
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JP2533358B2 |
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JP2527694B2 |
PURPOSE: To reduce the cost by erecting a water storage wall at a step section of a river or the like, opening the upper and lower ends to the upstream and downstream, and providing multi-stage ascent chambers inside. CONSTITUTION: The f...
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JP2528078B2 |
PURPOSE: To provide a general purpose fish way device which is installed to a river crossing structure and which is short in its horizontal level and immune to the effect of the difference between the water levels of upstream and downstr...
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JPH08199544A |
PURPOSE: To prevent the decrease of water stored in a dam and the mud pollution of river., etc., with sediment by providing a structural body with slopes separating earth and sand around an inlet of the river, providing earth and sand tr...
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JPH08199545A |
PURPOSE: To make it possible to correspond to a fishway when variations in the water level of a river are increased and to facilitate cost reduction and maintenance. CONSTITUTION: A plurality of intervals 2-5 are provided in the bottom 1...
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JP2518837B2 |
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JPH08189024A |
PURPOSE: To reinforce the apron of a dam to make the apron withstand falling stores mixed in overflow water by providing wedge-shaped recesses between Pca high-strength blocks arranged on the apron of the dam, and pouring joint concrete ...
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JP2515892B2 |
THE PRESENT INVENTION RELATES TO A GATE PUMP APPARATUS HAVING FUNCTIONS TO PREVENT RETURN OF DOWNSTREAM WATER AS WELL AS TO PUMP UPSTREAM WATER TO THE DOWNSTREAM SIDE OF THE GATE. THE GATE PUMP APPARATUS HAS AT LEAST ONE AXIAL-FLOW PUMP ...
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JP2513304B2 |
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JP2503608Y2 |
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JP2510398B2 |
PURPOSE: To stabilize operation of an automatic constant volume dispensing device so that a dispensing pipe discharge port is not rapidly opened and closed by regulating operation of a valve disc connected to a float. CONSTITUTION: A pip...
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JPH08144249A |
PURPOSE: To make it possible to easily carry out dredge work by means of a submerged dam, at the same time, reduce dredge construction work cost and to make it possible to effectively prevent the flood of river by laying down the submerg...
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JPH08134877A |
PURPOSE: To enable forcible natural drain sand purification without power, by installing a flexible drain sand pipe provided with a natural forcible drain device at the front end in a dam water reservoir and conducting the slurry to a sa...
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JPH08128029A |
PURPOSE: To instal a fishladder device in a river crossing structure having middle and high head in a form harmonized with a natural scene, and to facilitate its execution for improving durability and earthquake proofness. CONSTITUTION: ...
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JPH08105970A |
PURPOSE: To detect fish, regardless of a kind passing the center of a fishway or near the side wall thereof, and obtain more detailed information on the signs of fish. CONSTITUTION: A pair of sensors 12-1 and 12-2 covering the whole widt...
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JPH0881945A |
PURPOSE: To improve efficiency in execution of work by a method wherein a U-shaped body is formed of a baffle plate and side walls extending in bending from both sides of the baffle plate, and another U-shaped body is attached at its fre...
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JPH0881944A |
PURPOSE: To relieve fishes from fatiguing when being transferred from the downstream side to the upstream side in a dam with a high head. CONSTITUTION: A pair of bearing frames 2 are erected on a position downstream a bank body 1. Water ...
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JPH089218Y2 |
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JPH0860640A |
PURPOSE: To provide a groove holding a seal material at the contact part of the external periphery of base seat and the wall, by separating a door stop metal fitting from a concrete wall by the thickness of base seat for seals surroundin...
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JPH0853831A |
PURPOSE: To set a fish-luring position and a fish-releasing position in optional positions in the case fish is moved to the upstream side from the downstream side of a dam construction. CONSTITUTION: A fish luring device 2 designed to pu...
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