JP2711449B2 - Device for discharging sediment deposited at the bottom of water sources such as dams, lakes and reservoirs - Google Patents
Device for discharging sediment deposited at the bottom of water sources such as dams, lakes and reservoirsInfo
- Publication number
- JP2711449B2 JP2711449B2 JP62169652A JP16965287A JP2711449B2 JP 2711449 B2 JP2711449 B2 JP 2711449B2 JP 62169652 A JP62169652 A JP 62169652A JP 16965287 A JP16965287 A JP 16965287A JP 2711449 B2 JP2711449 B2 JP 2711449B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- jet
- solid
- liquid separation
- separation tank
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はダム、湖、貯水池等の水源の底に堆積した土
砂を排除処理する装置に関し、特に、水源の水を汚すこ
となく排除処理せんとする装置である。
（従来の技術）
ダム等の底に堆積した土砂の排除処理の方法として
は、浚渫船を使用するのが今迄のやり方であるが、その
場合に土砂と一緒に処理しなければいけない濁水の量が
非常に多量に出ることを免れ得なかつた。
（発明が解決しようとする問題点）
前記のような従来の浚渫船での排除処理では、濁水が
非常に多量に出ることになるが、その処理に伴うダム内
の水の汚れを処理することができないと云う問題点があ
り、この問題点の解決のために特開昭56−59931号と実
開昭48−104148号公報に開示されているような提案があ
ったが、その開示された技術説明の内容は不明瞭乃至不
充分でありそのまま実施し得るものではなく現在迄の
処、有効な処理方法はなかつた。
（問題点を解決するための手段）
第一図と第二図に、船体（１）内に固液分離槽（２）
を装備し、該固液分離槽（２）の上部浄水取出部（５）
からの浄水管（６）を、水源の底に堆積した土砂にジェ
ット水流を噴出する噴出部（７、又は７′）に接続せし
め、以て、土砂と共に汲み上げられた水が、固液分離槽
（２）で土砂と分離されて噴出部（７）にてジエツト水
流となつてジエツト掘削を行う水となるものである土砂
の排出装置に於て、噴出部（７、又は７′）からの噴出
水の流速が約0.5〜2.0m/秒であるようにした土砂の排出
装置の構成が示される。
（作用）
本発明に於ては、本発明者が考案した実願昭58−1131
66号考案に係る固液分離槽を使用し、ダム等の底に堆積
した土砂（特に粒径の小さい細砂、シルトを含む土砂）
にジエツト水流を噴出するための水は固液分離槽（２）
の上部浄水取出部（５）からの水を使用するに当たり、
噴出部（７、又は７′）からの噴出水の流速が約0.5〜
2.0m/秒であるようにしたことで、ダム等の水源の底の
土砂を適確に排除処理できたのである。この流速が0.5m
/秒以下では土砂を捲き上がらせる力が弱くて不都合で
あり、又、2.0m/秒以上では土砂を含む水を吸上げるこ
とを妨害することになり吸上げの効率が悪くなる。
更に固液分離槽（２）で分離された土砂は、土砂輸送
パイプで少量の水により土砂処理場に運搬できる。また
ジエツト水として利用される多量の水は、ダム内で掘削
点の極く限られた部分だけの水の動きを発生させるだけ
であり、ダム全体を汚すような流れは作らない。
（実施例）
本発明装置の実施に当つては、第１図図示の第二固液
分離槽（９）を設けることが好ましい。即ち、前記船体
（１）内に、更に第二固液分離槽（９）を設け、該第二
固液分離槽（９）内の浄水取出部（11）は前記浄水管
（６）に接続せしめ、原水流入口（13）はバルブ（12）
を介して前記の第一固液分離槽（２）の下部固形物含有
水排出口（14）に接続せしめると共に、第二固液分離槽
（９）の土砂含有水排出口（15）は排出ポンプ（16）を
介して土砂処理場に至る排出パイプ（17）に接続され、
以て、第一固液分離槽（２）から排出された土砂を含む
水が再度固形物と分離されて噴出部（７）にてジエツト
水流となる水の一部になるものであるようにするもので
ある。
而して、前記固液分離槽（２）およびその関連パイピ
ングは密閉式であつて、前記汲上ポンプ（４）にて汲上
げられた原水の有する水圧にて、固液分離槽（２）内の
上部浄水取出部（５）からの浄水管（６）内の水に水圧
がかゝり、前記噴出部（７）からの噴出水の流速が約0.
5〜2.0m/秒であるようにするものとする。この流速が0.
5m/秒以下では土砂を捲き上がらせる力が弱くて不都合
であり、又、2.0m/秒以上では土砂を含む水を吸上げる
ことを妨害することになり吸上げの効率が悪くなる。
ジエツト掘削兼土砂吸上装置（10）（10′）は二重管
になつており、第２図図示の場合は、内管（18）は土砂
を吸い上げるためにその先端出口はラツパ状吸上部（2
1）となし、外管（19）には固液分離槽（２）からの浄
水が掘削水として供給される。ジエツトとして水が噴出
するために噴出部（７）の出口はノズル状とし、前記ラ
ツパ状吸上部（21）よりも少許上方の位置で開口するよ
うにする。比較的土砂の粒径が大きいときにはこの形式
でよいが、粒径が小さい場合で大量の土砂を大きな流量
で処理する場合には、第３図図示のように内管と外管の
働きを逆にすることが好ましい。即ち、第３図図示の実
施例では、内管（18′）に固液分離槽（２）からの浄水
管（６）を接続せしめ、内管（18′）の先端出口はノズ
ル状となした噴出部（７′）となすと共に、外管（1
9′）は汲上ポンプ（４）に至る汲上管（20）に接続せ
しめ、外管（19′）の先端はラツパ状吸上部（21′）と
なし前記噴出部（７′）の先端出口よりも少許前方に延
びた形のものとする。
ジエツト掘削兼土砂吸上装置（10）（10′）の先端と
水源の底の土砂の面との間には約10〜400cm程度の間隔
を置くことが好ましいので、ジエツト掘削兼土砂吸上装
置（10）（10′）を適正な位置に保持させるための手段
として、船体（１）からクレーン（22）を介してロープ
（23）で吊支するものとする。
（効果）
本発明は前述のようにして、ダム等の底の土砂を排除
処理するに於て、ダム全体を汚すことなく、土砂処理を
行い得、而かも、労力が少しで済むと云う大きな特長を
有するものである。Description: TECHNICAL FIELD The present invention relates to an apparatus for removing sediment deposited on the bottom of a water source such as a dam, a lake, or a reservoir, and more particularly to an apparatus for removing water from a water source without polluting the water. It is a device to be. (Prior art) As a method of removing sediment deposited on the bottom of a dam or the like, a conventional method has been to use a dredger, but in that case, the amount of turbid water that must be treated together with the sediment. Was inevitable to get out in very large quantities. (Problems to be Solved by the Invention) In the above-mentioned conventional elimination processing with a dredger, a very large amount of turbid water will be generated. There is a problem that it is impossible to solve this problem. To solve this problem, there have been proposals as disclosed in JP-A-56-59931 and JP-A-48-104148. The content of the explanation is unclear or insufficient and cannot be implemented as it is, and there is no effective processing method so far. (Means for solving the problems) Figures 1 and 2 show a solid-liquid separation tank (2) in the hull (1).
Equipped with a water purification unit (5) at the upper part of the solid-liquid separation tank (2).
The water purification pipe (6) is connected to the jetting part (7 or 7 ') which jets a jet water stream to the sediment deposited on the bottom of the water source, so that the water pumped up together with the sediment is separated into a solid-liquid separation tank. In the earth and sand discharge device which is separated from the earth and sand in the jetting part (7) and becomes the water for jet excavation at the jetting part (7), the sediment discharged from the jetting part (7 or 7 ') The configuration of the earth and sand discharging device in which the flow rate of the jet water is about 0.5 to 2.0 m / sec is shown. (Function) In the present invention, the present application was filed by the present inventor 58-1131.
Sediment deposited on the bottom of dams, etc. (especially fine sand with small particle size, silt containing silt) using the solid-liquid separation tank according to No. 66
For jetting jet water into the solid-liquid separation tank (2)
In using the water from the upper water purification outlet (5),
The flow velocity of the jet water from the jet part (7 or 7 ') is about 0.5 to
By setting the speed to 2.0 m / sec, the sediment at the bottom of a water source such as a dam could be properly eliminated. This flow velocity is 0.5m
If the speed is less than / m / sec, the force for lifting up the soil is weak, which is inconvenient. If the speed is 2.0m / sec or more, the absorption of the water containing the earth and sand is hindered, and the efficiency of the suction is deteriorated. Further, the sediment separated in the solid-liquid separation tank (2) can be transported to the sediment treatment plant with a small amount of water using a sediment transport pipe. Also, the large amount of water used as jet water only causes water movement in a very limited part of the excavation point within the dam, and does not create a flow that pollutes the entire dam. (Embodiment) In implementing the apparatus of the present invention, it is preferable to provide a second solid-liquid separation tank (9) shown in FIG. That is, a second solid-liquid separation tank (9) is further provided in the hull (1), and a purified water outlet (11) in the second solid-liquid separation tank (9) is connected to the water purification pipe (6). At least, the raw water inlet (13) is a valve (12)
Is connected to the lower solids-containing water discharge port (14) of the first solid-liquid separation tank (2), and the sediment-containing water discharge port (15) of the second solid-liquid separation tank (9) is discharged. Connected to a discharge pipe (17) leading to a sediment treatment plant via a pump (16),
Thus, the water containing the earth and sand discharged from the first solid-liquid separation tank (2) is again separated from the solid matter and becomes a part of the water which becomes the jet stream at the jetting part (7). Is what you do. Thus, the solid-liquid separation tank (2) and its associated piping are of a closed type, and the solid-liquid separation tank (2) is pressurized by the water pressure of the raw water pumped by the pump (4). The pressure in the water in the water purification pipe (6) from the upper water purification outlet (5) is increased, and the flow rate of the water discharged from the water discharge part (7) is about 0.
It shall be 5 to 2.0 m / sec. This flow rate is 0.
At a speed of 5 m / sec or less, the force for rolling up the soil is weak, and at a speed of 2.0 m / sec or more, the absorption of the water containing the soil is hindered, and the efficiency of the suction is deteriorated. The jet digging and soil wicking device (10) (10 ') is a double pipe. In the case shown in Fig. 2, the inner pipe (18) has a wrapper-shaped suction port at the tip end to suck up the soil. (2
The purified water from the solid-liquid separation tank (2) is supplied to the outer pipe (19) as drilling water. In order to jet water as a jet, the outlet of the jetting part (7) is formed in a nozzle shape, and is opened at a position slightly above the wrapper-shaped suction part (21). This type may be used when the particle size of the sediment is relatively large. However, when the particle size is small and a large amount of sediment is treated at a large flow rate, the functions of the inner pipe and the outer pipe are reversed as shown in FIG. Is preferable. That is, in the embodiment shown in FIG. 3, the water purification pipe (6) from the solid-liquid separation tank (2) is connected to the inner pipe (18 '), and the outlet of the tip of the inner pipe (18') becomes a nozzle. And the outer tube (1)
9 ') is connected to a pumping pipe (20) leading to a pumping pump (4), and the end of the outer pipe (19') is formed as a flapper-shaped suction part (21 ') from the outlet at the end of the jetting part (7'). Shall also extend slightly forward. It is preferable that a gap of about 10 to 400 cm is provided between the tip of the jet digging and sediment wicking device (10) (10 ') and the earth and sand surface at the bottom of the water source. (10) As means for holding (10 ') in an appropriate position, the hull (1) shall be suspended and supported by a rope (23) via a crane (22). (Effects) In the present invention, as described above, in removing the sediment at the bottom of a dam or the like, it is possible to perform the sediment treatment without soiling the entire dam, and it is possible to reduce the labor. It has features.
【図面の簡単な説明】
図面は本発明に係るダム、湖、貯水池等の水源の底に堆
積した土砂の排出装置の実施例を示したものであつて、
第１図はその一部切欠した正面図、
第２図は第一実施例に於けるジエツト掘削兼土砂吸上装
置の断面正面図、
第３図は第二実施例に於けるジエツト掘削兼土砂吸上装
置の断面正面図、
第４図は船体とジエツト掘削兼土砂吸上装置等との関係
を示す正面図。
（１）は船体
（２）は固液分離槽
（３）は原水流入部
（４）は汲上ポンプ
（５）は上部浄水取出部
（６）は浄水管
（７）（７′）は噴出部
（８）（８′）は二重管
（19）は第二固液分離槽
（10）（10′）はジエツト掘削兼土砂吸上装置
（11）は浄水取出部
（12）はバルブ
（13）は原水流入口
（14）は下部固形物含有水排出口
（15）は土砂含有水排出口
（16）は排出ポンプ
（17）は排出管（土砂輸送パイプ）
（18）（18′）は内管
（19）（19′）は外管
（20）は汲上管
（21）（21′）はラツパ状吸上部
（22）はクレーン
（23）はロープ
（24）（25）（26）はバルブBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of an apparatus for discharging sediment deposited on the bottom of a water source such as a dam, a lake, a reservoir, etc. according to the present invention, and FIG. FIG. 2 is a cross-sectional front view of a jet drilling and sediment wicking device in the first embodiment, FIG. 3 is a cross-sectional front view of a jet drilling and sediment wicking device in the second embodiment, FIG. 4 is a front view showing the relationship between the hull and a jet digging and sediment suction device. (1) Hull (2) Solid-liquid separation tank (3) Raw water inlet (4) Pumping pump (5) Upper purified water outlet (6) Purified water pipe (7) (7 ') Outlet (8) (8 ') is a double pipe (19) is a second solid-liquid separation tank (10) (10') is a jet drilling and sediment suction device (11) is a purified water outlet (12) is a valve (13) ) Is the raw water inlet (14) is the lower solid matter containing water outlet (15) is the sediment containing water outlet (16) is the discharge pump (17) is the discharge pipe (sediment transport pipe) (18) (18 ') Inner pipes (19) (19 ') are outer pipes (20) are pumping pipes (21) (21') are flap-shaped suction cups (22) crane (23) are ropes (24) (25) (26) valve
Claims (1)
分離槽（２）の上部浄水取出部（５）からの浄水管
（６）を、水源の底に堆積した土砂にジェット水流を噴
出する噴出部（７、又は７′）に接続せしめ、該噴出部
（７、又は７′）の内又は外の二重管（８、又は８′）
には汲上ポンプ（４）を介して前記固液分離槽（２）の
原水流入部（３）を接続してジェット掘削兼土砂吸上装
置（10、又は10′）を形成せしめ、以て、土砂と共に汲
み上げられた水が、固液分離槽（２）で土砂と分離され
て噴出部（７、又は７′）にてジェット水流となってジ
ェット掘削を行う水となるものであるようにした、水源
の底に堆積した土砂の排出装置に於て、 前記噴出部（７、又は７′）からの噴出水の流速が約0.
5〜2.0m/秒であることを特徴とするダム、湖、貯水池等
の水源の底に堆積した土砂の排出装置。(57) [Claims] A hull (1) is equipped with a solid-liquid separation tank (2), and a water purification pipe (6) from an upper purified water discharge section (5) of the solid-liquid separation tank (2) is attached to soil and sand deposited on the bottom of a water source. A double pipe (8 or 8 ') inside or outside the jet (7 or 7'), which is connected to the jet (7 or 7 ') for jetting the jet water stream
Is connected to the raw water inflow section (3) of the solid-liquid separation tank (2) through a pumping pump (4) to form a jet digging and sediment sucking apparatus (10 or 10 '). The water pumped up together with the earth and sand is separated from the earth and sand in the solid-liquid separation tank (2) and becomes a jet stream at the jetting part (7 or 7 ') to become water for jet drilling. In the apparatus for discharging sediment deposited on the bottom of a water source, the flow rate of the jet water from the jet section (7 or 7 ') is about 0.
A device for discharging sediment deposited at the bottom of a water source such as a dam, a lake, or a reservoir characterized by a speed of 5 to 2.0 m / sec.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62169652A JP2711449B2 (en) | 1987-07-09 | 1987-07-09 | Device for discharging sediment deposited at the bottom of water sources such as dams, lakes and reservoirs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62169652A JP2711449B2 (en) | 1987-07-09 | 1987-07-09 | Device for discharging sediment deposited at the bottom of water sources such as dams, lakes and reservoirs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6414435A JPS6414435A (en) | 1989-01-18 |
| JP2711449B2 true JP2711449B2 (en) | 1998-02-10 |
Family
ID=15890439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62169652A Expired - Lifetime JP2711449B2 (en) | 1987-07-09 | 1987-07-09 | Device for discharging sediment deposited at the bottom of water sources such as dams, lakes and reservoirs |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2711449B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3277489B2 (en) | 1999-12-09 | 2002-04-22 | 信州大学長 | Sediment discharge mechanism for water storage area and method for discharging sediment from water storage area |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48104148U (en) * | 1972-03-04 | 1973-12-05 | ||
| AT324250B (en) * | 1972-09-07 | 1975-08-25 | Eder Theodor Dr | METHOD AND DEVICE FOR SELECTIVE CLASSIFICATION OF GRAIN MATERIAL SUSPENDED IN VISCOSE |
| JPS5659931A (en) * | 1979-10-20 | 1981-05-23 | Shigeo Takamura | Dredging method for preventing water quality from contamination using circulation high-pressure mixture gas, water injection pump |
| JPS59106503U (en) * | 1982-12-28 | 1984-07-18 | 株式会社西原環境衛生研究所 | Solid-liquid separator |
| JPS60144905U (en) * | 1984-03-06 | 1985-09-26 | 田辺 博昌 | Closed sedimentation tank for drainage pump |
-
1987
- 1987-07-09 JP JP62169652A patent/JP2711449B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6414435A (en) | 1989-01-18 |
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