FR2594460A1 - Method for removing the mud from artificial lakes. - Google Patents

Method for removing the mud from artificial lakes. Download PDF

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Publication number
FR2594460A1
FR2594460A1 FR8602007A FR8602007A FR2594460A1 FR 2594460 A1 FR2594460 A1 FR 2594460A1 FR 8602007 A FR8602007 A FR 8602007A FR 8602007 A FR8602007 A FR 8602007A FR 2594460 A1 FR2594460 A1 FR 2594460A1
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FR
France
Prior art keywords
lake
silting
artificial lakes
mud
pipe
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Granted
Application number
FR8602007A
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French (fr)
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FR2594460B1 (en
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Individual
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR8602007A priority Critical patent/FR2594460B1/en
Priority to EG75/87A priority patent/EG18413A/en
Publication of FR2594460A1 publication Critical patent/FR2594460A1/en
Application granted granted Critical
Publication of FR2594460B1 publication Critical patent/FR2594460B1/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/8858—Submerged units
    • E02F3/8875—Submerged units pulled or pushed
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
    • E02B3/023—Removing sediments
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
    • 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

Abstract

Method for removing the mud from artificial lakes consisting in sucking up the mud by means of a pipe 4, the outlet orifice of which emerges well below the level of the lake in which the suction orifice is located, the highest part of the said pipe being located below the mean lower level 6 of the lake 2. The suction orifice is provided with a suction dredger 5 which can be moved along the bottom 3 of the lake, the part of the pipe running from the suction dredger to a point near the retaining dam 1 being flexible.

Description

La présente invention est relative à un procédé pour désenvaser les lacs artificiels. The present invention relates to a method for silting up artificial lakes.

Toutes les rivières charrient des alluvions notamment, lors des crues. Lorsqu'un barrage artificiel est édifié sur une rivière un lac se forme et les alluvions se déposent dans ce dernier avec tous les inconvénients que cela présente. All rivers carry alluvial deposits, especially during floods. When an artificial dam is built on a river a lake is formed and alluvium is deposited in the latter with all the disadvantages that this presents.

Deux méthodes sont actuellement utilisées pour désenvaser les lacs artificiels
La première méthode consiste à vider le lac puis à enlever les sédiments déposés à l'aide d'engins usuels.Two methods are currently used to de-silt artificial lakes
The first method consists in emptying the lake and then removing the deposited sediments using standard equipment.

La seconde méthode est utilisée lorsqu'en raison de ses dimensions,il n'est pas possible de vider le lac. Dans ce cas, on drague le fond du lac à partir d'engins flottant à sa surface. The second method is used when due to its size it is not possible to empty the lake. In this case, the bottom of the lake is dredged from devices floating on its surface.

Cette méthode est très coûteuse et peu efficace car la vase en suspension dans l'éeau échappe aux godets de la drague. This method is very expensive and ineffective because the mud suspended in the water escapes the dredger buckets.

Le procédé de l'invention consiste à aspirer la vase à l'aide d'une canalisation dont l'orifice de sortie débouche bien au-dessous du niveau du lac de retenue, la partie haute de la canalisation étant située au-dessous du niveau inférieur moyen du lac. The method of the invention consists in aspirating the mud using a pipe, the outlet of which opens out well below the level of the retaining lake, the upper part of the pipe being located below the level lower middle of the lake.

L'invention sera mieux comprise par la description qui va suivre, faite en se référant aux dessins annexés à titre d'exemple indicatif seulement, sur lesquels
La figure 1 est une vue en coupe longitudinale d'un barrage montrant la mise en oeuvre du procédé de l'invention
La figure 2 est une vue en coupe et en perspective, illustrant un mode de mise en oeuvre du procédé de l'invention.The invention will be better understood from the description which follows, made with reference to the accompanying drawings by way of indicative example only, in which
Figure 1 is a longitudinal sectional view of a dam showing the implementation of the method of the invention
Figure 2 is a sectional and perspective view illustrating an embodiment of the method of the invention.

En se reportant aux dessins, on voit que 1 schématise un barrage édifié sur un cours d'eau et, 2, le lac de retenue. Referring to the drawings, we see that 1 shows a dam built on a watercourse and, 2, the reservoir.

Le problème posé consiste à évacuer les sédiments, ou vase, qui, charriés par le cours d'eau, s'accumulent sur le fond 3 du lac de retenue. The problem posed consists in evacuating the sediments, or mud, which, carried by the watercourse, accumulate on the bottom 3 of the reservoir.

Selon le procédé de l'invention, on utilise une canalisation 4 dont une extrémité comporte un suceur 5 pouvant être déplacé sur le fond 3 et dont l'autre extrémité débouche, en aval du barrage bien au-dessous du niveau du lac, ladite canalisation 4 traversant ledit barrage en un point qui est situé au-dessous du niveau inférieur moyen 6 du lac.  According to the method of the invention, a pipe 4 is used, one end of which comprises a nozzle 5 which can be moved over the bottom 3 and the other end of which opens, downstream of the dam well below the level of the lake, said pipe 4 crossing said dam at a point which is situated below the mean lower level 6 of the lake.

La partie de la canalisation 4 qui s'étend du suceur jusqu'à proximité du barrage est souple de façon à permettre le déplacement dudit suceur. The part of the pipe 4 which extends from the nozzle to near the dam is flexible so as to allow the displacement of said nozzle.

Selon un mode de mise en oeuvre du procédé, le suceur 5 est supporté ,par l'entremise d'un câble 7, par deux pontons flottants 8a et 8b. En tirant par des moyens connus sur le câble 7, à partir de l'un des pontons, il est possible de déplacer le suceur 5 transversalement selon la direction X1-X2. Chacune des extrémités du câble 7 est soutenue par un bras 9, du ponton correspondant, pouvant pivoter de façon à déplacer le suceur selon la direction Y1-Y2 sans déplacer les pontons. According to one embodiment of the method, the nozzle 5 is supported, by means of a cable 7, by two floating pontoons 8a and 8b. By pulling by known means on the cable 7, from one of the pontoons, it is possible to move the nozzle 5 transversely in the direction X1-X2. Each end of the cable 7 is supported by an arm 9, of the corresponding pontoon, which can pivot so as to move the squeegee in the direction Y1-Y2 without displacing the pontoons.

De préférence, les pontons 8a-8b sont astreints à se déplacer le long de câbles 10 tendus parallèlement aux bords du lac, c'est-à-dire sensiblement perpendiculairement au barrage. Preferably, the pontoons 8a-8b are required to move along cables 10 stretched parallel to the edges of the lake, that is to say substantially perpendicular to the dam.

Le procédé de l'invention nécessite très peu d'énergie pour sa mise en oeuvre. I1 permet, de plus, à l'aide de canalisations s'étendant au-dessous du barrage, de transporter les sédiments sur une grande distance et ce sans risque de perte par infiltration ou évaporation ce qui est très important pour effectuer l'irrigation s'il s'agit de boues fertilisantes, il permet aussi, si la canalisation présente des orifices d'entrée 13 près de la surface du lac, d'alimenter, le cas échéant,des réservoirs situés en contrebas mais légèrement au-dessus du cours aval du fleuve. The process of the invention requires very little energy for its implementation. It also allows, by means of pipes extending below the dam, to transport the sediments over a great distance and this without risk of loss by infiltration or evaporation which is very important for carrying out irrigation. '' it is fertilizing sludge, it also allows, if the pipeline has inlet holes 13 near the surface of the lake, to feed, if necessary, reservoirs located below but slightly above the course down the river.

A cet effet, une vanne d'arrêt 11 peut être placée entre le suceur 5 et l'orifice 13 de prélèvement d'eau claire qui est normalement fermé par une vanne appropriée (non représentée) durant les opérations de désenvasement.For this purpose, a stop valve 11 can be placed between the squeegee 5 and the orifice 13 for withdrawing clean water which is normally closed by an appropriate valve (not shown) during the de-silting operations.

Naturellement, selon l'importance du lac de retenue plusieurs canalisations 4, pourvues de suceurs 5, pourront être raccordées à la vanne 11. Of course, depending on the size of the reservoir, several pipes 4, provided with squeegees 5, can be connected to the valve 11.

Comme montré sur les dessins, la partie de la canalisation 4, qui plonge vers le fond du lac, peut être soutenue par des flotteurs 12.  As shown in the drawings, the part of the pipe 4, which plunges towards the bottom of the lake, can be supported by floats 12.

Claims (5)

REVENDICATIONS l-Procédé pour désenvaser les lacs artificiels consistant à aspirer la vase à l'aide d'une canalisation (4) dont l'orifice de sortie débouche bien au-dessous du niveau du lac dans lequel se trouve l'orifice d'aspiration, la partie haute de ladite canalisation étant située au-dessous du niveau inférieur moyen (6) du lac ( 2). l-Method for de-silting artificial lakes consisting in sucking the mud using a pipe (4), the outlet opening of which opens well below the level of the lake in which the suction opening is located, the upper part of said pipeline being located below the lower average level (6) of the lake (2). 2-Procédé pour désenvaser les lacs artificiels, selon la revendication l,caractérisé en ce que l'orifice d'aspiration est muni d'un suceur (5) pouvant être déplacé sur le fond (3) du lac, la partie de la canalisation, s'étendant du suceur jusqu'à proximité du barrage de retenue (l),-étant souple. 2-A method for de-silting artificial lakes, according to claim l, characterized in that the suction port is provided with a nozzle (5) which can be moved on the bottom (3) of the lake, the part of the pipeline , extending from the squeegee to near the retaining barrier (l), - being flexible. 3-Procédé pour désenvaser les lacs artificiels, selon l'une quelconque des revendications 1 et 2, caractérisé en ce que le suceur est supporté et tracté par un câble (7) dont les extrémités sont portées par des pontons flottants (8a-8b). 3-A method for de-silting artificial lakes, according to any one of claims 1 and 2, characterized in that the nozzle is supported and towed by a cable (7) whose ends are carried by floating pontoons (8a-8b) . 4-Procédé pour désenvaser les lacs artificiels, selonla revendication 3, caractérisé en ce que chaque ponton est guidé par un câble tendu parallèlement aux bords du lac et s'étendant sensiblement perpendiculairement au barrage (1). 4-A method for de-silting artificial lakes, according to claim 3, characterized in that each pontoon is guided by a cable stretched parallel to the edges of the lake and extending substantially perpendicular to the dam (1). 5-Procédé pour désenvaser les lacs artificiels, selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il est prévu des orifices d'aspiration situés près de la surface du lac.  5-A method for de-silting artificial lakes, according to any one of claims 1 to 4, characterized in that there are provided suction orifices located near the surface of the lake.
FR8602007A 1986-02-14 1986-02-14 PROCESS FOR DEWATERING ARTIFICIAL LAKES Expired FR2594460B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8602007A FR2594460B1 (en) 1986-02-14 1986-02-14 PROCESS FOR DEWATERING ARTIFICIAL LAKES
EG75/87A EG18413A (en) 1986-02-14 1987-02-10 Procede pour desenvaser les lacs artificiels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8602007A FR2594460B1 (en) 1986-02-14 1986-02-14 PROCESS FOR DEWATERING ARTIFICIAL LAKES

Publications (2)

Publication Number Publication Date
FR2594460A1 true FR2594460A1 (en) 1987-08-21
FR2594460B1 FR2594460B1 (en) 1989-12-29

Family

ID=9332123

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8602007A Expired FR2594460B1 (en) 1986-02-14 1986-02-14 PROCESS FOR DEWATERING ARTIFICIAL LAKES

Country Status (2)

Country Link
EG (1) EG18413A (en)
FR (1) FR2594460B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1236832A1 (en) * 1999-12-09 2002-09-04 Japan as represented by Director General of Agency of Shinshu University System and method for discharging deposit
CN1307350C (en) * 2004-12-10 2007-03-28 方文景 Self-desilting and dredging method and apparatus for reservoir
CN100336985C (en) * 2005-07-05 2007-09-12 冯君尧 River channel silt cleaning method and equipment thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR536845A (en) * 1921-05-23 1922-05-10 Method and device for regulating the course of rivers
DE471300C (en) * 1929-02-11 Alexander Vogt Dipl Ing Device for desludging of reservoirs and docks or the like.
US2262943A (en) * 1939-01-03 1941-11-18 Kenneth E Jones Portable hydraulic sand and gravel lifter
FR2041685A1 (en) * 1969-05-07 1971-02-05 Berthelon Bernard
US3563607A (en) * 1968-05-02 1971-02-16 Laurice Winifred Boyle Subaqueous mining

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE471300C (en) * 1929-02-11 Alexander Vogt Dipl Ing Device for desludging of reservoirs and docks or the like.
FR536845A (en) * 1921-05-23 1922-05-10 Method and device for regulating the course of rivers
US2262943A (en) * 1939-01-03 1941-11-18 Kenneth E Jones Portable hydraulic sand and gravel lifter
US3563607A (en) * 1968-05-02 1971-02-16 Laurice Winifred Boyle Subaqueous mining
FR2041685A1 (en) * 1969-05-07 1971-02-05 Berthelon Bernard

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1236832A1 (en) * 1999-12-09 2002-09-04 Japan as represented by Director General of Agency of Shinshu University System and method for discharging deposit
EP1236832A4 (en) * 1999-12-09 2005-01-19 Jp Agency Of Shinshu Universit System and method for discharging deposit
CN1307350C (en) * 2004-12-10 2007-03-28 方文景 Self-desilting and dredging method and apparatus for reservoir
CN100336985C (en) * 2005-07-05 2007-09-12 冯君尧 River channel silt cleaning method and equipment thereof

Also Published As

Publication number Publication date
EG18413A (en) 1992-10-30
FR2594460B1 (en) 1989-12-29

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