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JP3225178B2 |
PURPOSE: To make it possible to automatically release the sludge in a sludge reservoir by communicating a rubber dam with a septic water tank by providing a river purifying facility including the rubber dam with a flood introducing block...
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JP2001295250A |
To provide a pressure reducing valve capable of reducing energy more than the conventional pressure reducing valve. This pressure reducing valve is provided with a water guide tube 3 having an inlet 1 of high-pressure water at one end se...
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JP2001288731A |
To restore the habitat for fish and creatures living in a river by building an artificial dam or deep water in a river bed in urban areas for the purpose of producing a sandy shoal, a meandering stream, or a head of water and create the ...
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JP3211024B2 |
To provide a vertical fishpass capable of shortening a construction period by completing the fishpass only by carrying parts manufactured at a plant to a working site and installing them on a weir bank. A vertical fishpass is furnished w...
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JP2001248141A |
To allow fishes to ascent a river by providing a fish ladder on a movable weir body itself.A vertically rotatably movable weir body A in which natural stones or artificial stones 5 are arranged on the upper face is provided retractably i...
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JP2001514116A |
A pylon servicing apparatus comprising a carriage (11) having a first drive mechanism (17) provided on the carriage (11), the first drive mechanism (17) being adapted to engage the pylon (10) to enable the carriage (11) to be moved longi...
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JP3205704B2 |
To obtain a preference flow velocity most favorable for fishes going upward by moderating the flow velocity of water going downstream in a fish way channel in a spiral fish way. A spiral fish way 1 is so constructed that a straight line ...
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JP3200600B2 |
PURPOSE: To enable a worker to enter inside a bonnet and perform maintenance and checking work easily. CONSTITUTION: A main gate door leaf body 11 and a sub-gate door leaf body 12 are stored in parallel with each other inside an integral...
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JP2001214424A |
To provide a construction method for a dam, by which, fertile agricultural land and forest are not submerged, and more cost effective than large scale dams, with functions of electric power adjustment, making use of water, and sand prote...
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JP2001207433A |
To provide an anti-freeze device for a sluice gate installation, capable of facilitating the control of the sluice gate installation and saving time for the control thereof.In the sluice gate installation, capable of properly taking wate...
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JP3188365B2 |
PURPOSE: To prevent the formation of a water-way along the outsides of pipe bodies and to make it possible to reduce the following and conveying space to variations in the ground by providing an impervious wall formed of a rubber plate c...
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JP3185169B2 |
PURPOSE: To prevent the generation of bubbles by water repellency by inhibiting the generation of water repellent phenomenon itself in a diversion channel, and to correspond even to an existing facility conducting discharge through a div...
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JP2001159121A |
To prevent a back flow through a drain pipe by sliding an auxiliary gate and closing a discharge opening for the drain pipe, when a foreign matter is bitten into a flap gate installed in discharge opening for the auxiliary gate.In this g...
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JP3169520B2 |
PURPOSE: To provide a valve equipment that is excellent in following-up to water levels and stability in operation. CONSTITUTION: In a valve equipment that controls water level by repetitious operation of opening and shutting actuated by...
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JP2001123431A |
To provide a new water channel provided with an overflow preventing function for preventing an overflow caused by abnormal elevation of a water level in various kinds of channels for water-reservation, irrigation, a drainage channel and ...
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JP2001123577A |
To provide a woody-cement composite block jointly having various functions. In the woody-cement composite block B1 for river revetment, a woody material 1 in which a woody raw material such as wood powder, wood small pieces, wood fibers,...
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JP2001123435A |
To resolve such problems that a hydraulic jump phenomenon of overflow water is not sufficiently reduced and that a noise accompanied to energy thereof is not sufficiently moderated, even when a downstream sloped face sloped continuously ...
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JP2001123434A |
To facilitate maintenance and installation work, to preclude an environmental view from being worsened, and to reduce a cost. An opening and closing system for a water channel 80 by a pump gate 10 is formed into a semi-lift system. A hin...
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JP3160548B2 |
To provide a fish pass through which small fish can easily go up or escape all the year round at a large level difference part in a river or a mountain torrent. This fish pass is formed of a fish pass body 1 (culvert) constituted of a cy...
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JP3160122B2 |
PURPOSE: To simplify the structure of a rising and lowering fishway gate, to eliminate the need for motive power, to facilitate maintenance and control of the gate, and to reduce the cost. CONSTITUTION: In a vertically moving fishway gat...
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JP3146974B2 |
To provide a method for manufacture of a fish way block capable of being divided and integrated. Prior to an operation wherein concrete is poured into a manufacturing form 16 of a fish way block 10, a parting board 13 parting an inside o...
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JP2001065720A |
To facilitate drainage at normal time while prevent backflow of drainage automatically if required by opening a door through application of rotational moment around a horizontal support to the door by using a floating force generating at...
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JP2001064987A |
To improve carrying-in efficiency of a piece and facilitate handling of the piece. A civil engineering frame structural body 11 is formed by assembling member pieces 1, 1... as a plurality of minimum split units so as to form a flat fram...
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JP3143642B2 |
PURPOSE: To provide a discharge type power generation device for nuclear power plant which recovers the water head energy of the warm sea water as electric power, in the discharge into a drain pit from the power generation plant equipmen...
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JP3143641B2 |
PURPOSE: To provide a syphon type drainage device which drains the warm sea water which is used for cooling in a power generation plant and discharged into the sea without generating bubbles and white darkening, and is free from the brea...
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JP3132966B2 |
PURPOSE: To enable the mounting of an impervious wall to a gutter pipe. CONSTITUTION: A gutter pipe buried in a levee is constituted of a plurality of pipes 15 connected with a pipe joint 16. A socket 20 is formed in the end of one pipe ...
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JP2001020318A |
To improve the reliability by performing classification treatment of bottom sludge securely and to improve the work efficiency by performing bottom sludge treatment continuously in a water purifying method, a water purifying system, and ...
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JP3113766B2 |
PURPOSE: To allow fish to go upstream more effectively. CONSTITUTION: A plurality of gates 1 are arranged at every specified distance and the tap height of the gate 1 is variable with the rotary movement of a rod arm 3. In such a fish la...
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JP2000319860A |
To collect water flow to a fish pass and to upstream lead fish at a low cost, by providing a fish pass of low altitude, which faces part of an outreaching face of a steel door body when an erecting/tilting gate is tilted. An erecting/til...
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JP2000297420A |
To provide a sand moving method and a device for a storage dam capable of executing long distance transpotation by simple structure. An upstream end is opened to sedimentary sand 3 on the bottom of a storage dam, a sand moving pipe 4 ope...
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JP2000297421A |
To restrict the occurrence of dry up of a fishpass by eliminating the runoff of river water than necessary by providing a rubber weir which is raised by controlling the inner pressure at the inlet portion of running water in fishpass and...
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JP2000290967A |
To reduce the number of personnel required for operating automatic dust catchers and a conveyor by enabling dust dumped onto the conveyor from the automatic dust catchers to be conveyed smoothly on the conveyor. A plurality of automatic ...
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JP2000290980A |
To provide a fishway facility having the combined effect of a fishway device provided in a dam and a hydro-power station attached thereto. A plurality of cistern blocks 11 are piled up between two of upstream and downstream points adjace...
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JP2000282446A |
To provide a dam for hydroelectric power generation that avoids submergence of fertile farmland, woods and the like so that disruption of ecosystems and the environment can be fully prevented. A plurality of reservoirs are constructed in...
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JP2000233194A |
To directly clean low-concentration polluted water flowing in a narrow and shallow water channel, without disturbing fish coming up and down by placing a number of cylindrical cage-type containers in a zigzag in two lines on both sides o...
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JP3081169B2 |
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JP2000230654A |
To provide an air valve which can be detected that a pipeline is full at a place away from the pipeline. An air valve comprises a communicating hole 2 formed at a lower portion to be communicated with a pipeline, and in a valve casing 1 ...
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JP3075109B2 |
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JP3074672B2 |
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JP3075121B2 |
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JP2000204533A |
To provide a device, in which there is no undercut at a step and which has considerably small structural length when the device is designed in a comparatively steep inclination and separates and discharges separated substances from drain...
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JP3064622B2 |
PURPOSE:To enhance the strength of a bag at the time of the filling with sludge by forming the bag from a laminate formed by laminating a polyolefin or polyester nonwoven fabric to a knitted fabric formed from a molecularly oriented mold...
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JP3064841B2 |
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JP3058359B2 |
PURPOSE:To provide a bag for sludge treatment which is lightweight and excel lent in strength, resistance to creep, chemicals, abrasion, fouling and cut, and which has adequate flexibility. CONSTITUTION:This bag for sludge treatment cons...
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JP3052157B2 |
PURPOSE:To recover the clarifying function of natural environment by setting aggregate in the river water of the downstream of a dam. CONSTITUTION:Aggregate such as shell of various shellfish, cement laitance, cinder, light-weight aggreg...
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JP3047390B2 |
To certainly eliminate biting-in of sand and earth into door elements so that door opening and closing are not hindered by the sand and earth floating in the water and having deposited and equip with an adjusting function to allow genera...
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JP3030730B2 |
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JP2000080630A |
To provide a water intake device capable of saving motive power for gate elevation, maintaining watertightness for a long period of time and simplifying maintenance work. Water intake from reserved water is blocked by forming an air rese...
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JP2000073338A |
To vertically move a dust collector concurrently only by moving a gate vertically, by integrally fitting the dust collector to be installed in an upstream channel to the gate, and providing a dust receiver on the upper end face of the ga...
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JP2000073345A |
To eliminate a site for forcible drainage, and reduce a cost of equipment by forcibly draining water of an upstream side channel of a gate to a downstream side channel by using a forcible drainage pipe arranged along a natural drainage c...
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