JP2016098609A - Inflow sediment processing method in dam storage lake - Google Patents
Inflow sediment processing method in dam storage lake Download PDFInfo
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- JP2016098609A JP2016098609A JP2014238121A JP2014238121A JP2016098609A JP 2016098609 A JP2016098609 A JP 2016098609A JP 2014238121 A JP2014238121 A JP 2014238121A JP 2014238121 A JP2014238121 A JP 2014238121A JP 2016098609 A JP2016098609 A JP 2016098609A
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Abstract
Description
本発明はダムが設けられている貯水湖に流入堆積した土砂の、合理的排除を企図したダムの貯水湖における流入土砂の処理方法に関する。 The present invention relates to a method for treating inflow sediment in a reservoir of a dam intended to rationally exclude sediment deposited in the reservoir having a dam.
最近、公的調査によると、ダムの貯水湖内に河川から流れ込んだ土砂が堆積し、ダムの実質的な貯水量確保を妨げていることが確認された。 そして、このような堆積物が増えることによって、ダム湖水建設に際して設定した設計耐用年数を大幅に短縮させてしまうこととなる。 Recently, according to a public survey, it was confirmed that sediment from the river was deposited in the reservoir of the dam, preventing the dam from securing a substantial amount of water. And by increasing such deposits, the design service life set for dam lake construction will be significantly shortened.
このような問題発生を回避するために、従来、湖底の堆積土砂を掘り出して引き上げると共に、これをダンプ等に積載して所要の土砂集積所に移動させる、と言うような手段を取ることを通例とした。 In order to avoid such problems, conventionally, it is customary to take measures such as digging up and lifting the sediment at the bottom of the lake and loading it in a dump etc. and moving it to the required sediment collection point. It was.
上記した従来手段であると、土砂の輸送に莫大な経費と時間を要するばかりでなく、土砂集積所に大量に土砂が集まりその処理に窮してしまうというような問題、更には多数のダンプカーの往来に基づく、交通渋滞、排気ガスの撒き散らし、更には、輸送中の不測の土砂撒き散らしと言う公害問題を引き起こすこととなる。 The conventional means described above not only requires enormous expenses and time for transporting earth and sand, but also causes problems such as a large amount of earth and sand gathering in the earth and sand collection site and being treated. It will cause pollution problems such as traffic congestion, exhaust gas scattering based on traffic, and unexpected earth and sand scattering during transportation.
本発明はこのような問題を解決した新規の「ダムの貯水湖における流入土砂の処理方法」の提供を図ったものである。 The present invention is intended to provide a novel “method for treating inflow sediment in a reservoir of a dam” that solves such problems.
本発明は、本発明は、湖底から掘出した土砂を収容するための浮力を有する浮船本体、並びに、当該浮船本体に連ねるための浮力を有する周壁を、収容する土砂の増加に応じて順次嵩上げし、当該周壁の嵩上げの形成は、土砂が一杯になる毎に段階的に行なうように成し、ダム湖の水位に基づく設定水位に応じた高さに嵩上げがなされかっその内部に土砂が満たされた状態となった際、その表面に土盛を施して平坦化し、当該平坦化された上面に対して湖上施設を構築するようにした「ダムの貯水湖における流入土砂の処理方法」に係る。 According to the present invention, the floating ship main body having buoyancy for accommodating the earth and sand excavated from the bottom of the lake, and the peripheral wall having buoyancy for connecting to the floating ship main body are sequentially raised according to the increase of the earth and sand to be received. The raising of the peripheral wall is carried out step by step every time the earth and sand are full, the height is raised according to the set water level based on the level of the dam lake, and the inside of the earth is filled with earth and sand. In this situation, the surface of the dam is flattened by depositing the surface, and a facility on the lake is constructed on the flattened upper surface.
本発明は、浮船本体を含めた全体の形成、または、段階的な連結組み立てに基づき行なうための周壁部分の形成を、ブロック単体の組合せ連結に基づき行なうようにした請求項1に記載のダムの貯水湖における流入土砂の処理方法を実施の態様とする。 The present invention provides the dam according to claim 1, wherein the formation of the entire wall including the floating ship body or the formation of the peripheral wall portion based on the stepwise connection assembly is performed based on the combination connection of the single blocks. The processing method of the inflow sediment in a reservoir is made into the embodiment.
本発明は請求項1に記載のような構成の採用に基づき、ダム湖から掘出した土砂を当該ダム湖の湖面上での処理、すなわち、当該土砂を、湖上施設を構築するための浮島形成の資材としての利用を図るため、掘り起こした土砂を移動することなく現場処理とされる。
従って、これを土砂捨て場等に移動するようにした場合に生じる、ダンプカーの往来に基づく、交通渋滞、排気ガスの撒き散らし、更には、輸送中の不測の土砂撒き散らしと言う公害問題を引き起こすことがない。 そして、湖上施設構築のための資材として現場の掘出し土砂が利用されるため、その構築の廉価性及び迅速性が図られる。
The present invention is based on the use of the structure as described in claim 1 and is used to treat the earth and sand excavated from the dam lake on the surface of the dam lake, that is, to form the floating island for constructing the facility on the lake. In order to use it as a material, it will be treated on site without moving the excavated earth and sand.
Therefore, when this is moved to a trash dump, etc., it will cause pollution problems such as traffic jams, exhaust gas scattering based on the traffic of dump trucks, and even unforeseen landslides during transportation. There is nothing. And since the excavated earth and sand at the site is used as a material for constructing the facilities on the lake, the construction is inexpensive and quick.
本発明は、請求項2に記載のように、浮船本体を含めた全体の形成、または、段階的な連結組み立てに基づき行なうための周壁部分の形成を、ブロック単体の組合せ連結に基づき行なうことにより、その構築の迅速性、簡易性、並びに作業の簡易性を図ることができる。 According to the present invention, as described in claim 2, the entire formation including the floating ship body or the formation of the peripheral wall portion based on the stepwise connection assembly is performed based on the combination connection of the single blocks. Therefore, it is possible to improve the speed and simplicity of construction and the simplicity of work.
本発明は、湖底から掘出した土砂を収容するための浮力を有する浮船本体、並びに、当該浮船本体に連ねるための浮力を有する周壁を、収容する土砂の増加に応じて順次嵩上げし、当該周壁の嵩上げの形成は、土砂が一杯になる毎に段階的に行なうように成し、ダム湖の水位に基づく設定水位に応じた高さに嵩上げがなされかっその内部に土砂が満たされた状態となった際、その表面に土盛を施して平坦化し、当該平坦化された上面に対して湖上施設を構築するようにした「ダムの貯水湖における流入土砂の処理方法」に係るものである。 The present invention provides a buoyant ship body having buoyancy for accommodating earth and sand excavated from the bottom of a lake, and a peripheral wall having buoyancy for connecting to the float ship body in accordance with an increase in the amount of earth and sand to be accommodated. Raising is done step by step every time the earth and sand are full, and the height is raised according to the set water level based on the water level of the dam lake, and the inside is filled with earth and sand. In this case, the surface is flattened by embankment, and a facility on the lake is constructed on the flattened upper surface.
そして、浮船本体を含めた全体の形成、または、段階的な連結組み立てに基づき行なうための周壁部分の形成を、ブロック単体の組合せ連結に基づき行なうようにすることを実施の態様とするものである。 And, it is an embodiment that the entire formation including the floating ship body or the formation of the peripheral wall portion based on the stepwise connection assembly is performed based on the combination connection of the single blocks. .
図1は本発明の作業工程を表したものであって、Aはダム、Bは湖底に流入した土砂を示す。 同図に於いて、(イ)は基本となる浮船本体1を表したものである。 当該浮船本体1は図2に示すように、底面部には透水シート1aを敷き、周壁内面には保護シート1bで覆うことにより、内部に収容した土砂の水分を外部に排出するような作用を呈する形態のものとしてある。 なお、収容された土砂の水分は、収容に基づく土砂圧力で外部に排出させられるような力が付与されているため、湖の水圧に抗してその強圧的排出がなされるものである。 なお、水分除去を必要としない場合、たとえば殆どが岩石の場合は、このような構成は不要である。 FIG. 1 shows the work process of the present invention, where A is a dam and B is earth and sand flowing into the lake bottom. In the figure, (a) represents a basic floating ship body 1. As shown in FIG. 2, the floating ship body 1 has a function of discharging moisture of earth and sand contained therein by laying a permeable sheet 1 a on the bottom surface and covering the inner surface of the peripheral wall with a protective sheet 1 b. It is in the form of presenting. In addition, since the water | moisture content of the contained earth and sand is given the force which is discharged outside with the earth and sand pressure based on accommodation, the strong discharge | emission is made against the water pressure of a lake. In addition, such a structure is unnecessary when moisture removal is not required, for example, when most of the rocks are used.
上記した浮船本体1は、図1の(イ)に示すように湖面に浮かべ、湖底に流入した土砂Bを船上ホッパー等で掘り出して収容する。 そして、これが一杯になった際には、図1の(ロ)に示すように浮船本体1の周壁の嵩上げを行なう。 当該嵩上げは、図2に示すようなブロック単体2の組合せ連結に基づき行なうものである。 そして、当該ブロック単体2としては、公知の技術、例えば特開昭63-268823号公報、特開平10-252108号公に掲載されているような公知のブロックを用いるものであり、従って、これに対する詳細な説明は省略する。 The above-described floating ship body 1 floats on the surface of the lake as shown in FIG. 1 (a), and digs and stores the earth and sand B flowing into the bottom of the lake with a ship hopper or the like. And when this is full, the surrounding wall of the floating ship body 1 is raised as shown in FIG. The raising is performed based on the combined connection of the single blocks 2 as shown in FIG. The block unit 2 uses known blocks such as those disclosed in publicly known techniques, for example, Japanese Patent Laid-Open No. 63-268823 and Japanese Patent Laid-Open No. 10-252108. Detailed description is omitted.
ところで、上記した浮船本体1全体、また、当該浮船本体1全体を図2に示すようにブロック単体で形成した場合はそのブロック単体に、更に、周壁を嵩上げするためのブロック単体2に、それぞれ内部にウレタン等を収装しておくことにより、浮力を備えたものとしておくか、図3に示すようにフロート3を側部に取り付けることにより全体が湖に船状に浮き上がった状態が保たれるように構成してある。 By the way, the above-mentioned floating ship body 1 as a whole, and when the floating ship body 1 as a whole is formed as a single block as shown in FIG. By placing urethane or the like in the tank, it should have buoyancy, or by attaching the float 3 to the side as shown in FIG. It is constituted as follows.
また、上記した浮船本体1としては図2に示すようにブロック単体で形成する以外、図4に示すように一体成形体の浮船本体1aとするように構成しても良い。 更に、周壁の嵩上げ手段としては、図1に示すようにブロック単体の組合せ連結に基づき行なう以外、図4に示すように枠状周壁4を次第に積み上げるように構成しても良い。 この場合、当該枠状周壁4自体に浮力を付与しておくか、あるいは前記したような外付け的フロートにより浮力を得るようにしておく。 Further, the above-described floating ship main body 1 may be configured to be an integrally formed floating ship main body 1a as shown in FIG. 4 except that it is formed as a single block as shown in FIG. Furthermore, as a means for raising the peripheral wall, the frame-like peripheral wall 4 may be gradually stacked as shown in FIG. 4 except that it is based on the combined connection of the single blocks as shown in FIG. In this case, buoyancy is imparted to the frame-shaped peripheral wall 4 itself, or buoyancy is obtained by an external float as described above.
前記のようにして所要高さの嵩上げがなされ、また、内部に土砂が満たされた状態において、その上面に土盛等なして平坦化し、当該平坦化された表面に対して、釣り場或いは公園、遊園地等の所要の湖上施設を構築することにより、図5に示すような浮島状の湖上施設を形成する。 In the state where the required height is raised as described above, and the inside is filled with earth and sand, the upper surface thereof is flattened with no embankment or the like, and the flattened surface is subjected to fishing grounds or parks, By constructing the necessary facilities on the lake such as an amusement park, a floating island facility as shown in FIG. 5 is formed.
そして、当該湖上施設は、ダム湖の水位が下がった場合は、その底部が湖底に接することとなるが、この場合、当該接地状態でずれ動かない様に、その底部にスパイク状の足を設けておくか、或いは、浮船本体の底部を、湖底にフィット可能とするフレキシブルな形態としておくようにして実施することが好ましい。 And when the water level of the dam lake falls, the bottom of the dam facility comes into contact with the bottom of the dam. In this case, spiked feet are provided at the bottom of the dam to prevent it from shifting in the grounded state. Alternatively, it is preferable that the bottom portion of the floating ship body be formed in a flexible form that can be fitted to the bottom of the lake.
また、ダム湖の水位が上がった場合は、図1に鎖線で示すように浮き上がることとなる。そして、水位が危険値に達した時点ではダムの放水がなされるため、ダム湖の外に流れ出すようなことはない。 Further, when the water level of the dam lake rises, it will float as shown by the chain line in FIG. And when the water level reaches the dangerous value, the dam is discharged, so it doesn't flow out of the dam lake.
本発明は以上のような工程を取り、ダム湖から掘出した土砂を当該ダム湖の湖面上で受取ることにより、当該土砂を、湖上施設を構築するための浮島形成の資材としての利用を図る。 そのため、掘り起こした土砂を移動することなく現場処理とされる。 The present invention takes the steps as described above, and receives the earth and sand excavated from the dam lake on the surface of the dam lake, so that the earth and sand can be used as a material for forming floating islands for constructing the facilities on the lake. Therefore, it is considered as on-site processing without moving the excavated earth and sand.
A ダム
B 土砂
1 浮船本体
1a 一体成形体の浮船本体
2 ブロック単体
3 フロート
4 枠状周壁
A dam B earth and sand
1 Ukifune body
1a Monolithic floating body
2 blocks alone
3 Float
4 Frame-shaped peripheral wall
Claims (2)
2. The inflow into the reservoir of the dam according to claim 1, wherein the formation of the entire wall including the floating ship body or the formation of the peripheral wall portion based on the stepwise connection assembly is performed based on the combination connection of the single blocks. Sediment disposal method.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106917386A (en) * | 2017-03-20 | 2017-07-04 | 水利部交通运输部国家能源局南京水利科学研究院 | Inverted L shape sand sill method to set up |
CN111350167A (en) * | 2020-04-12 | 2020-06-30 | 宁波高新区零零七工业设计有限公司 | Hydraulic filling prefabricated floating building and island expanding construction method |
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2014
- 2014-11-25 JP JP2014238121A patent/JP2016098609A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106917386A (en) * | 2017-03-20 | 2017-07-04 | 水利部交通运输部国家能源局南京水利科学研究院 | Inverted L shape sand sill method to set up |
CN106917386B (en) * | 2017-03-20 | 2019-11-22 | 水利部交通运输部国家能源局南京水利科学研究院 | Inverted L shape sand sill setting method |
CN111350167A (en) * | 2020-04-12 | 2020-06-30 | 宁波高新区零零七工业设计有限公司 | Hydraulic filling prefabricated floating building and island expanding construction method |
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