JP2000129644A - Flood control water quality conservation system - Google Patents
Flood control water quality conservation systemInfo
- Publication number
- JP2000129644A JP2000129644A JP10308961A JP30896198A JP2000129644A JP 2000129644 A JP2000129644 A JP 2000129644A JP 10308961 A JP10308961 A JP 10308961A JP 30896198 A JP30896198 A JP 30896198A JP 2000129644 A JP2000129644 A JP 2000129644A
- Authority
- JP
- Japan
- Prior art keywords
- water
- regulating reservoir
- inflow
- regulating pond
- turbidity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
Abstract
Description
【０００１】[0001]
【発明の技術分野】この発明は、雨水を一時的に貯留す
るとともに土砂を沈降させる調整池を設けた治水水質保
全システムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flood control water quality preservation system provided with a regulating pond for temporarily storing rainwater and sedimenting earth and sand.
【０００２】[0002]
【従来の技術】原野、山林を切り開いて宅地造成した住
宅地等においては、雨水を河川、湖沼、海などに放流す
るための水路が設けられ、大雨が降ると、その雨水が一
気に水路、河川に流れ込み、その水路等が氾濫する恐れ
があるので、その雨水の調整池を設けてその調整池に雨
水を一時的に貯留するとともに、その貯留雨水を徐々に
排水するようにして、下流水路等の氾濫を避けている。2. Description of the Related Art In residential areas constructed by opening up wilderness and mountain forests, waterways are provided for discharging rainwater into rivers, lakes, marshes, the sea, and the like. The rainwater may flow into the river, flooding the waterway, etc.Therefore, install a rainwater regulating pond and temporarily store rainwater in the regulating pond, and gradually drain the stored rainwater so that the downstream waterway, etc. Avoid flooding.
【０００３】例えば、図１に示すように、一定地域の雨
水が流れ込む水路Ｑを設けて、その水路Ｑを河川Ｒに接
続するとともに、水路Ｑに調整池Ｐを付設している。調
整池Ｐには水路Ｑから流入・排水管ｅ、ｔを設けて、水
路Ｑに集まった雨水を流入管ｅを介し調整池Ｐに一時的
に流し入れて貯留し、その貯留雨水を排水管ｔを介し徐
々に河川Ｒ又は水路Ｑに排水する。流入水管（流入管）
ｅ、流出水管（排水管）ｔにはそれぞれ流量制御弁
Ｖ1 、Ｖ2 を設けて、調整池Ｐへの流入排水量（貯水
量）を調節し得るようになっている。For example, as shown in FIG. 1, a water channel Q into which rainwater in a certain area flows is provided, the water channel Q is connected to a river R, and a regulating pond P is additionally provided in the water channel Q. Inflow / drainage pipes e and t are provided from the water channel Q in the regulating pond P, and the rainwater collected in the waterway Q is temporarily poured into the regulating pond P through the inflow pipe e to be stored, and the stored rainwater is drained into the drainage pipe t. Drain gradually to river R or waterway Q through. Inflow pipe (inflow pipe)
e, a flow control valve V 1 , V 2 is provided in the outflow water pipe (drain pipe) t, respectively, so that the inflow / drainage amount (water storage amount) into the regulating pond P can be adjusted.
【０００４】このような治水システムにおける調整池Ｐ
には、周囲を擁壁で構築した水面が露出するプールタイ
プと、地中に埋め込まれた地下タイプとがあり、後者の
地下タイプはその上面を運動場、公園などとしている。
一方、前者のプールタイプも、通常、テニスコート、運
動場などとして使用し、大雨の際にのみ、調整池Ｐの機
能を果すようになっている。A regulating pond P in such a flood control system
There are two types of pools, one of which is a pool type with the surrounding surface exposed by a retaining wall, and the other is an underground type embedded in the ground. The latter underground type has a playground, park, etc. on its upper surface.
On the other hand, the former pool type is usually used as a tennis court, an athletic field and the like, and performs the function of the regulating pond P only in heavy rain.
【０００５】[0005]
【発明が解決しようとする課題】上述の治水システムに
おいて、大雨時には、多くの土砂を巻き込んだ高濁水が
水路Ｑを流れるが、その高濁水が調整池Ｐに導かれれ
ば、その貯留時に沈降作用によって水の浄化が行われ
る。このため、従来、調整池Ｐ内で貯留し得る水量であ
れば、その貯留を行い、土砂を沈降させた後、晴天時に
放流することも行われている。In the flood control system described above, during heavy rain, highly turbid water that involves a lot of earth and sand flows through the water channel Q. If the highly turbid water is guided to the regulating pond P, it will settle during storage. The action purifies the water. For this reason, conventionally, as long as the amount of water can be stored in the regulating pond P, the water is stored, sediment is settled, and then discharged in fine weather.
【０００６】しかし、従来では、水路Ｑの水濁度に関係
なく、沈降浄化作用を行っており、無駄が多い。また、
降雨が長時間に及んで調整池Ｐが満杯になると、流量制
御弁Ｖ1 、Ｖ2 を閉じて、水路Ｑの高濁水を河川Ｒなど
に直接に流していた。通常、高濁水は大雨の時に生じ、
大雨の時には調整池Ｐが満杯になることが多いため、水
質浄化にはあまり貢献していなかった。However, conventionally, the sedimentation purifying action is performed irrespective of the water turbidity of the water channel Q, which is wasteful. Also,
When the regulating pond P became full due to a long rainfall, the flow control valves V 1 and V 2 were closed, and the high turbid water in the water channel Q was flowed directly to the river R or the like. Usually, high turbid water occurs during heavy rains,
Since the reservoir P was often full during heavy rains, it did not contribute much to water purification.
【０００７】この発明は、上記実情の下、調整池の沈降
作用を無駄なく向上させることを課題とする。An object of the present invention is to improve the settling action of a regulating pond without waste under the above circumstances.
【０００８】[0008]
【課題を解決するための手段】上記課題を達成するため
に、この発明は、まず、調整池への流入水路の水濁度に
基づき、調整池への水流入を調節するようにしたのであ
る。このようにすれば、低濁度の沈降作用を行う必要の
ない流水の導入がなくなり、効率的な沈降浄化作用を行
い得る。SUMMARY OF THE INVENTION In order to achieve the above object, according to the present invention, first, the flow of water into a regulating pond is adjusted based on the turbidity of the water flowing into the regulating pond. . In this way, there is no need to introduce flowing water that does not require a low turbidity sedimentation action, and an effective sedimentation purification action can be performed.
【０００９】つぎに、この発明は、降雨が長時間に及び
上記調整池が満杯になったときには、調整池の濁度に関
係なく、上記流入水路を流れる流速と前記調整池内を流
れる流速に落差を設けて、土砂を沈降させながら前記流
入水路又は河川等に放流するようにしたのである。Next, according to the present invention, when the rainfall is long and the regulating pond is full, the flow velocity flowing through the inflow water channel and the flow velocity flowing through the regulating pond are reduced regardless of the turbidity of the regulating pond. The sediment is settled and discharged into the inflow channel or river or the like while sedimentation.
【００１０】このように、流速に落差を設けることによ
り、調整池を通る雨水は少なからず土砂の沈降作用が行
われて水路又は河川等に放流される。このため、河川な
どの高濁度化が抑制される。As described above, by providing a drop in the flow velocity, the rainwater passing through the regulating pond is not less than sedimented by the sediment, and is discharged into a waterway or a river. Therefore, high turbidity of a river or the like is suppressed.
【００１１】[0011]
【発明の実施の形態】この発明の一実施形態としては、
河川・湖沼への流入水路に、雨水調整池を介設したバイ
パス路を設け、その調整池に流入水路からの水を迂回さ
せて、流入水路の流量を調整するとともに流水中の土砂
を沈降させる治水水質保全システムにおいて、前記流入
水路の水濁度に基づき、前記調整池への水流入を調節
し、調整池からはその濁度が所定以下になったときに放
流する構成を採用し得る。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is as follows.
A bypass is provided in the inflow channel to rivers and lakes through a rainwater regulating pond. In the flood control water quality preservation system, a configuration may be adopted in which the water inflow to the regulating pond is adjusted based on the water turbidity of the inflow channel, and the water is discharged from the regulating pond when the turbidity falls below a predetermined level.
【００１２】この構成において、調整池が満杯になった
ときには、上述の調整池への流出入制御を行う。調整池
への流出入は、上記流入水路及び調整池にそれぞれ濁度
計を設けるとともに調整池の流出入口にはそれぞれ電動
開閉弁を設け、その濁度計の計測値に基づき、各電動開
閉弁を制御して行う。In this configuration, when the regulating pond becomes full, the above-mentioned inflow / outflow control to the regulating pond is performed. For inflow and outflow to the regulating pond, a turbidity meter is provided for each of the inflow channel and the regulating pond, and an electric on / off valve is provided for each of the outflow and entrance of the regulating pond. Each electric on / off valve is based on the measured value of the turbidity meter. Control.
【００１３】[0013]
【実施例】一実施例を図１及び図２に示し、図１は一地
域の治水システムの概略斜視図、図２は同治水システム
の制御概略図であり、前述と同一符号は同一物を示し、
その説明は省略する。1 and 2 show an embodiment of the present invention. FIG. 1 is a schematic perspective view of a flood control system in one area, and FIG. 2 is a schematic view of control of the flood control system. Show,
The description is omitted.
【００１４】流入水路Ｑ及び調整池Ｐは、一行政機関の
管轄地域の適宜個所に計画的に設置し、調整池Ｐの大き
さ（貯水量）等は当該調整池Ｐの受持区域や計画雨量な
どによって適宜に決定する。例えば、長さ×幅×深さ＝
１００×５０×１０ｍとし、この場合の最大雨水貯留量
は、最大水位８ｍとして、１００×５０×８＝４０，０
００ｍ3 となる。その各調整池Ｐの利用態様はテニスコ
ート、バレーコート、運動場などと自由である。The inflow water channel Q and the regulating pond P are systematically installed at appropriate places in the area under the jurisdiction of one administrative agency, and the size (water storage amount) of the regulating pond P is determined in accordance with the receiving area of the regulating pond P and the plan. It is determined appropriately according to the amount of rainfall. For example, length x width x depth =
100 × 50 × 10 m, and the maximum rainwater storage amount in this case is 100 × 50 × 8 = 40,0 with the maximum water level being 8 m.
The 00m 3. The mode of use of each regulating pond P is free, such as a tennis court, a volleyball court, and a playground.
【００１５】水路Ｑには固定堰１が設けられて、この堰
１によってせき止められた流水が流入管ｅから調整池Ｐ
に流れ込む。堰１は可動堰とし得る。その堰１の手前の
水路Ｑ及び調整池Ｐには投げ込み式の濁度計２，３が設
置されている。調整池Ｐへの流入出流量制御弁Ｖ1 、Ｖ
2 は、バタフライ弁、ゲートなどの電動弁から成って、
その開閉度はフレキシブルとし得る。A fixed weir 1 is provided in the water channel Q, and flowing water blocked by the weir 1 flows from the inflow pipe e to the regulating pond P.
Flow into The weir 1 can be a movable weir. Throw-in turbidity meters 2 and 3 are installed in the water channel Q and the regulating pond P just before the weir 1. Inflow / outflow flow control valves V 1 , V
2 consists of electric valves such as butterfly valves and gates,
The degree of opening and closing can be flexible.
【００１６】調整池Ｐへの流入制御弁（流入弁）Ｖ
1 は、通常時には全閉として雨水などを水路Ｑのみに流
し、水路Ｑの水濁度が設定値を越えると、調整池Ｐに水
を流し込むため、その濁度に基づいて全開又は適宜な開
口度となる。また、調整池Ｐからの流出制御弁（流出
弁）Ｖ2 は、常時は開放しており、調整池Ｐの水濁度が
設定値になると、全閉する。濁度が低いときは、適宜な
開放度又は全開とする。調整池Ｐからの排水は、水中ポ
ンプ４によっても行われ、このポンプ４は水位及び降雨
量によって適宜に運転する。このため、調整池Ｐには水
位計Ｈ及び降雨感知器Ｅをそれぞれ設置する。An inflow control valve (inflow valve) V to the regulating pond P
1 is normally closed and rainwater is allowed to flow only to the water channel Q, and when the water turbidity of the water channel Q exceeds the set value, water flows into the regulating pond P. Degree. Further, the outflow control valve from the regulating pond P (outlet valve) V 2 is normally is open, the water turbidity of regulating reservoir P is the set value, fully closed. When the turbidity is low, the degree of openness or full openness is appropriate. Drainage from the regulating pond P is also performed by the submersible pump 4, and the pump 4 is appropriately operated according to the water level and the amount of rainfall. Therefore, a water level gauge H and a rainfall detector E are installed in the regulating pond P, respectively.
【００１７】調整池Ｐには操作盤（端末制御盤）Ａを設
置し、この操作盤Ａに各弁Ｖ1 、Ｖ2 、濁度計２，３、
ポンプ４、降雨感知器Ｅ及び水位計Ｈが接続される。操
作盤ＡはＮＴＴ電話回線を介して防災監視室、例えば行
政機関の建物の一室に備えられた中央監視盤Ｃに接続さ
れる。ＮＴＴ電話回線に代えて無線とし得る。An operation panel (terminal control panel) A is installed in the regulating pond P, and each valve V 1 , V 2 , turbidimeter 2, 3,
The pump 4, the rain detector E and the water level gauge H are connected. The operation panel A is connected via an NTT telephone line to a disaster prevention monitoring room, for example, a central monitoring panel C provided in a room of a government building. Wireless may be used instead of the NTT telephone line.
【００１８】調整池操作盤Ａは、中央監視室Ｃからの指
令、又は自己の動作によって所定時間間隔毎に調整池Ｐ
の水位を水位計Ｈを介して測定するとともに濁度計２，
３により水濁度を測定し、その測定値を中央操作盤Ｃに
伝送する。また、調整池Ｐの水位及び水路Ｑ及び調整池
Ｐの濁度が設定値を越えると、その信号を時間に関係な
く中央監視盤Ｃに伝送し、中央監視盤Ｃからの指示によ
り、各制御弁Ｖ1 、Ｖ2 を制御する。その設定水位（設
定値）は、その水位を越えると、調整池Ｐ及び調整池周
辺が氾濫などを起こしやすい水位を基準とし、濁度（設
定値）は汚染を招かない範囲で適宜に設定する。The regulating pond operation panel A is operated at a predetermined time interval by a command from the central monitoring room C or by its own operation.
Is measured through a water level meter H and the turbidity meter 2,
The water turbidity is measured by 3 and the measured value is transmitted to the central control panel C. Further, when the water level of the regulating pond P and the turbidity of the water channel Q and the regulating pond P exceed the set values, the signal is transmitted to the central monitoring panel C regardless of time, and each control is performed according to the instruction from the central monitoring panel C. The valves V 1 and V 2 are controlled. When the set water level (set value) exceeds the water level, the turbidity (set value) is appropriately set within a range that does not cause pollution, based on a water level at which the regulating pond P and the vicinity of the regulating pond are likely to cause flooding or the like. .
【００１９】上記降雨感知器Ｅは降雨強度で降雨量を測
定し、その強さは単位時間当りの降雨量で表わし、０〜
１００ｍｍ／ｈの範囲で測定する。その具体的態様は、
水滴計数型で、降雨を一定量の大きさの水滴にして、ラ
ンプと光電変換器との殻内に落下させる。通常、１分間
の降雨を積算してこのままの強度で降り続いた場合、１
時間当り何ｍｍの雨量（ｍｍ／ｈ）に相当するかを測定
し、パルス状の電気信号に変換して出力する。このよう
に、１分間の降雨量でもって、１時間あたりの降雨量
（ｍｍ／ｈ）を推定すれば、対応がすばやくできる。因
みに、一般の降雨量の測定は、１時間に実際に降った雨
量であらわすため、１時間経過しないと判明しないか
ら、対応が遅くなる。The rain detector E measures the amount of rainfall based on the intensity of rainfall, and the intensity is expressed as the amount of rainfall per unit time.
Measure in the range of 100 mm / h. The specific aspect is
In a water droplet counting type, rainfall is converted into water droplets of a certain size and dropped into the shell between the lamp and the photoelectric converter. Normally, when the rainfall for one minute is accumulated and it continues to fall at the same intensity, 1
The amount of rainfall (mm / h) per hour is measured, converted into a pulsed electric signal and output. As described above, if the amount of rainfall per hour (mm / h) is estimated based on the amount of rainfall per minute, the response can be quickly performed. Incidentally, the measurement of general rainfall is represented by the rainfall actually dropped in one hour, so it is not clear until one hour has passed, so the response is slow.
【００２０】この降雨感知器Ｅは、調整池Ｐの受持区域
内に取り付ければよいが、降雨感知器Ｅのメンテナンス
などを考慮して該雨水調整池Ｐ近くに取り付けている。
このとき、降雨状態を乱す建物や樹木などの障害物がな
く、地面が平面で、気流ができるだけ水平になるような
場所で、風が吹上がったり、吹きだまる場所は避け、強
い雨の際に地面からの跳ね返りが入らないことなどが必
要である。The rain sensor E may be installed in the receiving area of the reservoir P. However, the rain sensor E is installed near the rain reservoir P in consideration of maintenance of the rain sensor E and the like.
At this time, avoid places where there is no obstacle such as buildings or trees that disturb the rainfall, the ground is flat, and the airflow is as horizontal as possible. It is necessary to prevent bouncing off the ground.
【００２１】この降雨感知器Ｅの測定値により自動的に
上記調整池Ｐの水位（流量）、計測時間（測定時間）、
通信時間、濁度の条件を適宜に変更するとよい。すなわ
ち、異常な大雨量や長時間降雨などで、流量（水位）変
化（増加）が急激、大幅増水すると、通常通りの計測の
時間間隙や設定値では河川Ｒ、調整池Ｐなどのコントロ
ールがうまく出来ず、洪水、氾濫などを起こす可能性が
あるからである。The water level (flow rate), measurement time (measurement time),
The conditions of the communication time and the turbidity may be appropriately changed. In other words, if the flow (water level) changes (increases) rapidly and greatly due to abnormal heavy rainfall or prolonged rainfall, the control of the river R, regulating pond P, etc. will be performed well with the normal measurement time gap and set values. It is not possible, and there is a possibility of flooding and flooding.
【００２２】この実施例は、降雨感知器Ｅの雨検出によ
り、制御動作が立上がって水質保持作用が行われる。そ
の各制御弁Ｖ1 、Ｖ2 の動作の一例を表１に示す。この
表１において、（優先）は、調整池Ｐの水位上昇（設定
値越え）の際、優先してその水位を降下させる作用を行
うということである。また、（絞）は水位測定値に応じ
て弁の開口度を全開及び全閉でない適宜な開口度にする
意である。In this embodiment, the control operation is started up by the rain detection of the rain detector E, and the water quality maintaining action is performed. Table 1 shows an example of the operation of each of the control valves V 1 and V 2 . In Table 1, (priority) means that when the water level of the regulating pond P rises (exceeds the set value), the action of lowering the water level with priority is performed. Further, (throttle) means that the opening degree of the valve is set to an appropriate opening degree that is not fully open or fully closed according to the measured water level.
【００２３】[0023]
【表１】 [Table 1]
【００２４】上記実施例は、排水管ｔを河川Ｒに接続さ
せてバイパスしたが、排水管ｔは流入水路Ｑに接続させ
てもよい。In the above embodiment, the drain pipe t is connected to the river R for bypass, but the drain pipe t may be connected to the inflow water channel Q.
【００２５】[0025]
【発明の効果】この発明は、以上のように流入水路の水
濁度に基づき、常に土砂等の沈降作用を行い得るのよう
にしたので、今日叫ばれている川、湖沼の浄化に少なか
らず貢献し得るものである。According to the present invention, the sedimentation of soil and the like can always be performed based on the water turbidity of the inflow channel as described above. Can contribute.
【図１】一地域の治水システムの制御概略斜視図FIG. 1 is a schematic perspective view of control of a flood control system in one area.
【図２】同治水システムの概略図FIG. 2 is a schematic diagram of the flood control system.
Ａ 調整池操作盤 Ｃ 中央監視盤 Ｅ 降雨感知器 Ｈ 調整池水位計 Ｑ 水路 Ｒ 河川 Ｖ1 調整池流入制御弁 Ｖ2 調整池流出制御弁 ｅ 流入管 ｔ 排水管 １ 堰 ２、３ 濁度計 ４ ポンプA regulating reservoir pendant C central monitor board E rainfall sensor H balancing reservoir water level gauge Q waterway R rivers V 1 balancing reservoir inflow control valve V 2 balancing reservoir outlet control valve e inlet tube t drainage pipe 1 weir 2,3 turbidimeter 4 pump
Claims (3)
整池Ｐを介設したバイパス路ｅ、ｔを設け、その調整池
Ｐに流入水路Ｑからの水を迂回させて、流入水路Ｑの流
量を調整するとともに流水中の土砂を沈降させる治水水
質保全システムにおいて、 上記流入水路Ｑの水濁度に基づき、上記調整池Ｐへの水
流入を調節し、調整池Ｐからはその濁度が所定以下にな
ったときに放流するようにしたことを特徴とする治水水
質保全システム。1. An inflow water channel Q to a river R or a lake is provided with bypass passages e and t provided with a rainwater regulating pond P, and the water from the inflow water passage Q is detoured in the regulating pond P. In a flood control water quality preservation system that adjusts the flow rate of Q and sediments the sediment in the running water, the water inflow to the regulating pond P is adjusted based on the turbidity of the inflow channel Q. A flood control water quality preservation system, characterized in that the water is released when the temperature falls below a predetermined level.
になったときには、調整池Ｐの濁度に関係なく、上記流
入水路Ｑを流れる流速と前記調整池Ｐ内を流れる流速に
落差を設けて、土砂を沈降させながら前記流入水路Ｑ又
は河川Ｒ、湖沼に放流することを特徴とする請求項１に
記載の治水水質保全システム。2. When the rainfall is long and the reservoir P is full, the flow velocity flowing through the inflow water channel Q and the flow velocity flowing through the reservoir P are reduced regardless of the turbidity of the reservoir P. 2. The flood control water quality preservation system according to claim 1, wherein the water is discharged to the inflow water channel Q, the river R, and the lakes and marshes while sedimentation.
において、上記流入水路Ｑ及び調整池Ｐにそれぞれ濁度
計２、３を設けるとともに調整池Ｐの流出入口にはそれ
ぞれ電動開閉弁Ｖ1 、Ｖ2 を設け、その濁度計２、３の
計測値に基づき、各電動開閉弁Ｖ1 、Ｖ2 を制御するこ
とを特徴とする治水水質保全システム。3. The flood control water quality preservation system according to claim 1, wherein turbidity meters 2 and 3 are provided in the inflow water channel Q and the regulating pond P, respectively, and an electric on-off valve V 1 is provided at an outflow and entrance of the regulating pond P, respectively. , V 2, and the electric control valves V 1 , V 2 are controlled based on the measured values of the turbidity meters 2, 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10308961A JP2000129644A (en) | 1998-10-29 | 1998-10-29 | Flood control water quality conservation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10308961A JP2000129644A (en) | 1998-10-29 | 1998-10-29 | Flood control water quality conservation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000129644A true JP2000129644A (en) | 2000-05-09 |
Family
ID=17987330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10308961A Pending JP2000129644A (en) | 1998-10-29 | 1998-10-29 | Flood control water quality conservation system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000129644A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002129531A (en) * | 2000-10-21 | 2002-05-09 | Mitsuhiro Fujiwara | Flood damage prevention system |
| JP2002286534A (en) * | 2001-03-28 | 2002-10-03 | Chubu Regional Bureau Ministry Of Land Infrastructure & Transport | Outflowing sediment observation system and device therefor |
| WO2015156009A1 (en) * | 2014-04-11 | 2015-10-15 | 住友金属鉱山株式会社 | Supernatant water discharge device |
| JP2015202496A (en) * | 2015-08-04 | 2015-11-16 | 住友金属鉱山株式会社 | Supernatant water discharge device |
-
1998
- 1998-10-29 JP JP10308961A patent/JP2000129644A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002129531A (en) * | 2000-10-21 | 2002-05-09 | Mitsuhiro Fujiwara | Flood damage prevention system |
| JP4613415B2 (en) * | 2000-10-21 | 2011-01-19 | 充弘 藤原 | Water damage prevention method |
| JP2002286534A (en) * | 2001-03-28 | 2002-10-03 | Chubu Regional Bureau Ministry Of Land Infrastructure & Transport | Outflowing sediment observation system and device therefor |
| JP4721207B2 (en) * | 2001-03-28 | 2011-07-13 | 国土交通省中部地方整備局長 | Runoff sediment observation system, runoff sediment measurement device, and sediment separator |
| WO2015156009A1 (en) * | 2014-04-11 | 2015-10-15 | 住友金属鉱山株式会社 | Supernatant water discharge device |
| JP2015202424A (en) * | 2014-04-11 | 2015-11-16 | 住友金属鉱山株式会社 | Supernatant water discharge device |
| US9950283B2 (en) | 2014-04-11 | 2018-04-24 | Sumitomo Metal Mining Co., Ltd. | Supernatant water discharge device |
| JP2015202496A (en) * | 2015-08-04 | 2015-11-16 | 住友金属鉱山株式会社 | Supernatant water discharge device |
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