EP0121559A1 - Procede et appareil de captage de fluides - Google Patents

Procede et appareil de captage de fluides

Info

Publication number
EP0121559A1
EP0121559A1 EP19830903462 EP83903462A EP0121559A1 EP 0121559 A1 EP0121559 A1 EP 0121559A1 EP 19830903462 EP19830903462 EP 19830903462 EP 83903462 A EP83903462 A EP 83903462A EP 0121559 A1 EP0121559 A1 EP 0121559A1
Authority
EP
European Patent Office
Prior art keywords
layer
impervious
plastic
self
pervious
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.)
Ceased
Application number
EP19830903462
Other languages
German (de)
English (en)
Inventor
Arturo L. Di Cervia Ressi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CERVIA RESSI ARTURO L
Original Assignee
CERVIA RESSI ARTURO L
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 CERVIA RESSI ARTURO L filed Critical CERVIA RESSI ARTURO L
Publication of EP0121559A1 publication Critical patent/EP0121559A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • 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
    • E02B3/16—Sealings or joints

Definitions

  • impoundment ponds for fluids have been constructed using layers of plastic for lining the surface of an excavation in the earth which are usually then covered with a layer of clay to maintain the plastic in a uniform condition, exclude air bubbles and to protect it from tears and the like.
  • I disclose a vertical cut-off system that assures absolute water tightness wherein a pair of plastic films are used to line a slurry trench and a pervious layer fills the space between the two plastic layers to act as a filter. Draining of the filter material is used as a method of maintaining the effectiveness of the barrier and with a minimum amount of pumping at intervals guaranteeing that any pollutant which crosses the initial barrier is collected and eliminated.
  • the object of the present invention is to extend that plastic, pervious layer and pump-plastic layer technique to large impoundment ponds without the use. of slurry walls.
  • an impoundment pond is constructed in the usual fashion by excavating the impoundment pond space in the earth and lining same with a layer first layer of plastic.
  • a system of self-starting pumps are placed in collecting pipes at uniform intervals along the slope of the impoundment walls or surfac-s. These pipes are of such a diameter as to receive conventional self-starting pumps e.g. pumps which sense the presence of a fluid and automatically begin pumping the fluid when it reaches a predetermined level.
  • the pipes are covered with a pervious layer such as sand and then an inner layer of plastic, which in the preferred embodiment, is significantly thicker than the outer layer is applied over the pervious layer and then the conventional cap or layer of clay is applied thereover.
  • the outer ends of the two plastic layers may be sealed or otherwise covered with a clay cap so as to prevent the draining of surface water thereinto.
  • Figure 1 is an isometric sectional view of an impoundment pond incorporating the invention
  • Figure 2 is a sectional view of the walls of the impoundment pond incorporating the invention
  • Figure 3 is an enlarged sectional view showning a drainage pipe and pumps therein incorporating the invention.
  • the basic method of this invention for constructing an impoundment pond comprises excavating the pond in the earth with the sidewalls being tapered or sloped so as to assure that all pollutants flow towards the center of the impoundment pond.
  • the design of such impoundment ponds has been widely carried out in the past insofar as the depth, slopes and preparation of the sidewalls and bottom is concerned and need not be described herein.
  • the plastic materials which are used according to this invention are conventional in that they are impervious plastic films such as polyethelyne with or without strengthening scrimms or meshes therein. As shown in Fig.
  • the impoundment pond 10 has sidewalls 11, 12, 13 and 14 and a bottom 15, the sidewalls 11-14 sloping, to the surface.
  • Such ponds can vary in size from a few acres to many many acres and need not have square sides but can have irregularly shaped sides.
  • the invention is in the construction and operation of the surface of sidewalls 11-14 and the bottom wall 15.
  • a first or outer layer 20 of impervious material such as plastic, preferably polyethelyne or a similar product, with or without a strengthening mesh, is applied to the excavated surface 19 which has been prepared to be as smooth and as freed of sharp projections as possible.
  • This first layer 20 of plastic film is, in a preferred embodiment, 10 to 20 mils in thickness and is applied substantially uniformly to assure that there are no openings or gaps in this layer.
  • drain pipes 21 which can be conventional casing pipes perforated and slotted so as to permit fluid to egress therein is provided with a filter at the end.
  • Such drain pipes 21 are of a diameter so as to permit the introduction therein and placement of self-starting pumps 25 which are used for monitoring the flow of fluid either from external of the pond or from the internal of the pond. In other words, as soon as any fluid flows into any of the drain pipes, the pump 25 automatically starts.
  • These drain pipes 21 are typically six to eight inches in diameter and are spaced between thirty to one hundred feet on centers depending on the degree of monitoring desired and the size of the pond. As shown, a standpipe in the center can be coupled to the self starting pump to remove seepage from the center of the pervious layer.
  • a layer of fluid pervious material preferably sand, of one to three feet in thickness, a two foot thickness being typical.
  • This sand is smoothed to the contours of walls 11, 12, 13, 14 and bottom surface 15.
  • a second or inner layer of plastic 30 is then applied over the sand, this layer of plastic being in a preferred embodiment substantially thicker than the outer or first layer 20.
  • This layer may for example be 60 mils in thickness but; one would not go beyond the invention if the two layers of plastic were of identical composition and thickness.
  • the adjoining or juxtaposed edges are sealed to make them impervious as by sonic welding or by electronic heating.
  • a covnentional clay cap or layer 31 is applied over the inner plastic layer 30, such clay layer being typically of two to three feet in thickness and assures that the plastic films or layers remain in place and also serves as a protective barrier or layer against tearing and puncturing of such films.
  • FIG 3 is a section through a typical pump-plastic-pervious layer as illustrated.
  • the pump 25 is a typical submerged subursible pump having means 41 for sensing the fluid at a drain level in the drain pipe and automatically turning the pump 25 on.
  • Power lines 40 to 'the surface as well as the line 45 carrying the seepage material to the surface are contained in the drain pipe.
  • a monitoring unit 50 monitors and records on a strip chart, for example, the flow rate of seepage material below the impoundment level, the seepage material being returned to the impoundment pond.
  • the monitor may also record the time of operation of the self-monitoring pumps to determine the degree of seepage.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Paleontology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

Une cavité est excavée dans la terre en formant des parois latérales de préférence inclinées (11-14) et une première barrière ou couche imperméable (20) constituée d'une feuille ou pellicule de plastique. Une ou plusieurs pompes à auto-démarrage (25) sont placées à intervalles le long de la pente et sont noyées dans une couche perméable, telle que du sable, ayant une épaisseur comprise entre un et trois pieds. Une couche intérieure imperméable (30) qui, dans un mode préférentiel de réalisation, est sensiblement plus épaisse que la première couche ou couche externe imperméable (20), est déposée sur le sable puis une couche finale (31) ou couverture d'argile est appliquée sur la couche interne de plastique imperméable (30). Toute infiltration ou fuite au travers de la couche interne imperméable (30) due à une déchirure ou imperfection du plastique, s'écoule vers le bas, vers les pompes de contrôle à auto-démarrage (25) qui, en détectant l'écoulement, se mettent automatiquement en marche. L'invention comprend la détection du temps de fonctionnement de la pompe auto-commandée (25) pour déterminer le degré d'infiltration.
EP19830903462 1982-10-05 1983-10-05 Procede et appareil de captage de fluides Ceased EP0121559A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43287382A 1982-10-05 1982-10-05
US432873 1982-10-05

Publications (1)

Publication Number Publication Date
EP0121559A1 true EP0121559A1 (fr) 1984-10-17

Family

ID=23717929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830903462 Ceased EP0121559A1 (fr) 1982-10-05 1983-10-05 Procede et appareil de captage de fluides

Country Status (2)

Country Link
EP (1) EP0121559A1 (fr)
WO (1) WO1984001358A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3505687A1 (de) * 1985-02-19 1986-08-21 Basf Ag, 6700 Ludwigshafen Abdichtungsschirm fuer deponien
US4778628A (en) * 1986-05-15 1988-10-18 The United States Of America As Represented By The United States Department Of Energy Underground waste barrier structure
DE4003007A1 (de) * 1990-01-29 1991-08-01 Koenig Klaus Dipl Ing Bodenabdichtung gegen wassergefaehrdende stoffe, insbesondere fuer deponien, und verfahren dafuer
DE29605856U1 (de) * 1996-03-29 1996-06-13 Haug, Manfred, 85579 Neubiberg Anordnung zur Kontrolle von Abdichtungsmaßnahmen bei Auffangräumen und -flächen gegen wassergefährdende Stoffe
RU2318953C1 (ru) * 2006-09-14 2008-03-10 Государственное научное учреждение Поволжский научно-исследовательский институт эколого-мелиоративных технологий Российской академии сельскохозяйственных наук Способ определения долговечности герметизации деформационных швов водосберегающих конструкций гидротехнических сооружений

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1665104A (en) * 1928-04-03 Ernst eduard martienssen
FR2044634A1 (fr) * 1969-05-05 1971-02-26 Lebon Et Cie
FR2086924A5 (fr) * 1970-04-14 1971-12-31 Petroles Cie Francaise
US3908385A (en) * 1972-06-16 1975-09-30 Purdue Research Foundation Planted surface conditioning system
US4194855A (en) * 1978-03-27 1980-03-25 Hanns Egger Method for storing waste materials and their combustion residues in a manner harmless to underground water
IL55479A (en) * 1978-09-01 1983-06-15 Solmat Syst Bottom construction of ponds particularly solar ponds
US4296884A (en) * 1979-01-23 1981-10-27 True Temper Corporation Containment reservoir and method
US4352601A (en) * 1980-08-18 1982-10-05 Stabatrol Corporation Permanent bin for temporary storage of hazardous materials
US4362434A (en) * 1980-10-28 1982-12-07 Stabatrol Corporation Permanent disposal vault for hazardous chemical waste materials
US4358221A (en) * 1981-01-19 1982-11-09 Wickberg Norman E System for pollution control
US4335978A (en) * 1981-04-07 1982-06-22 Mutch Robert D Induced intragradient system for secure landfill

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8401358A1 *

Also Published As

Publication number Publication date
WO1984001358A1 (fr) 1984-04-12

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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