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WO1994011582A1 - Flexible dam - Google Patents

Flexible dam Download PDF

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Publication number
WO1994011582A1
WO1994011582A1 PCT/BR1993/000002 BR9300002W WO9411582A1 WO 1994011582 A1 WO1994011582 A1 WO 1994011582A1 BR 9300002 W BR9300002 W BR 9300002W WO 9411582 A1 WO9411582 A1 WO 9411582A1
Authority
WO
WIPO (PCT)
Prior art keywords
dam
flexible
filled
guide pipe
inflatable
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
PCT/BR1993/000002
Other languages
French (fr)
Inventor
Juarez Fontana Dos Santos
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.)
Individual
Original Assignee
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 JP6510419A priority Critical patent/JPH08503034A/en
Priority to AU32523/93A priority patent/AU3252393A/en
Publication of WO1994011582A1 publication Critical patent/WO1994011582A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
    • E02B15/0814—Devices for reducing the polluted area with or without additional devices for removing the material with underwater curtains
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
    • E02B15/0857—Buoyancy material
    • E02B15/0878—Air and water
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/005—Deformable barrages or barrages consisting of permanently deformable elements, e.g. inflatable, with flexible walls

Definitions

  • the present invention is related to a dam built of a flexible and inflatable material to be used to temporarily isolate sections of lakes, bays and even streams with low water flowrates.
  • the dam is suitable for temporary containment to assis in the undertaking of various activities, for example, dredgi of material from the bottom of the basin, without contaminati of the sorrounding water by suspended matter.
  • the dam installation does not require any alterations the submerged or land topography, avoiding eventual permanent damages to the environment and preserving the local environme
  • the dam is constituted by a guide pipe, made of a flexible material, which dimensions and physical resistance must be specified for each particular case.
  • Both ends of the pipe are supported on the ground.
  • the pipe is filled, by pumping, with a high density pulp.
  • the pul density is specified for each particular case to ensure prope anchorage of the dam.
  • the guide pipe is encased by a layer of flexible and inflatable material that constitute a screen elevating from t bottom of the aquatic basin to a level above the water.
  • This layer is constituted by a synthetic material, whose resistanc must be specified, and it is made up of inflatable cushions, whose dimensions must also be specified for each case.
  • the inflatable layer's cushions are filled with water, injected under pressure.
  • the upper cushions, close to the wat line, are filled with air, also injected under pressure.
  • the anchorage of the system is provided by the adhesio of the guide pipe to the surface of the basin.
  • the pipe diameter, as well as of the volume and density of the filler pulp are specified to withstand the shear stress and buoyancy forces.
  • a grid of cables supported on the ground and on the aquatic basin can be used to keep the dam in place.
  • This grid installed on the exterior of the system, can preve excessive bending of the inflatable layer or even its draggin due to movements of the column of water, wind action, surface of submerged currents.
  • FIG. 1 cross section of lateral view of the dam.
  • FIG. 2 perspective of the dam erected in a lake.
  • the flexible dam, object of the present invention is constituted by a high density polyethylene guide pipe (1) , completely filled with a pulp made of a baryte emulsion (2) , the said guide pipe (1) encased by an inflatable layer (3) made of PVC or similar material, containing inflatable cushions (4) filled with wate and inflatable cushions (5) filled with air, all provided wit a valve.
  • the first step in the design the dam is the measuremen of all variables for the particular case under consideration.
  • the size of the area to be contained, topography, characterization of the basin constituents, presence of currents, measurement of their energy, etc., are critical elements for the specification of materials to be used in the construction of the dam.
  • the information collected at the site is used to specify the guide pipe including: type of material, resistance and flexibility, diameter, density and composition of the filler pulp.
  • the length of the guide pipe must be chosen to allow ground support, in order to facilitate pumping and moving of the high density pulp. It must cover the entire perimeter of the area to be contained, following all changes in the topography of the basin.
  • the guide pipe (1) is completely encased by a flexible and inflatable layer (3) , made of a suitable material to be specified.
  • This layer is composed by sections with appropriate dimensions, each containing a valve or pressurized air and liquid injection.
  • the flexible and inflatable layer must be sized to provide a screen that will completely isolate the area to be contained.
  • the size of this layer is defined by the length of the guide pipe its elevation above the water line.
  • Repairs can be conducted on some of the sections without requiring deactivation of the dam.
  • the dam can be dismantled following a reverse procedur that is, deflating the segments by removing its contents (wat or air) , removing the guide pipe filler by pumping the high density pulp and finally by removing the system from the basi After reconditioning, the flexible dam can be installe again, at another location requiring containment.
  • the flexible dam offers a large number of advantages. The following can be highlighted:

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Barrages (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)
  • Revetment (AREA)

Abstract

The present invention is related to a dam built of a flexible and inflatable material to be used to temporarily isolate sections of lakes, bays and even stream with low water flowrates. The flexible dam is constituted by guide pipe (1), filled by pumping with a baritine pulp (2) and encased by a flexible and inflatable layer (3), done by PCV or similar material, endowed with inflatable layer's cushions, with pressure valves, some of them filled with water (4) and others with air (5).

Description

FLEXIBLE DAM
I . Field of Invention
The present invention is related to a dam built of a flexible and inflatable material to be used to temporarily isolate sections of lakes, bays and even streams with low water flowrates.
II . Background of Invention
To our knowledge, there are no similar systems for temporary containment of waters, employing the process described in this document or any other process.
The only other known system is the one employing inflatable surface floats, used to isolate oil spills on aqueous surfaces. These systems, however,are used to isolate suspended material at the water surface level only and do not isolate the column of water located between the surface and t bottom of the basin.
Usually, water containment in dams is undertaken by permanent or semi-permanent structures, using rocks or steel structures . The drawback of such structures is that they require a sizable amount of civil works and lengthy construction period, have associated high costs, cannot be reused, alter the local topography and have a permanent environmental impact.
III. Summary of the Invention
To avoid such drawbacks , a flexible dam was developed and is the object of the present invention. Its installation i very simple and practical, containment is achieved in a short period of time and at costs considerably lower than those associated with other permanent solutions.
The dam is suitable for temporary containment to assis in the undertaking of various activities, for example, dredgi of material from the bottom of the basin, without contaminati of the sorrounding water by suspended matter. The dam installation does not require any alterations the submerged or land topography, avoiding eventual permanent damages to the environment and preserving the local environme
Due to its modular feature and ease of assembling and disassembling, it can be used at different locations, that is it is reusable.
The dam is constituted by a guide pipe, made of a flexible material, which dimensions and physical resistance must be specified for each particular case.
Both ends of the pipe are supported on the ground. The pipe is filled, by pumping, with a high density pulp. The pul density is specified for each particular case to ensure prope anchorage of the dam.
The guide pipe is encased by a layer of flexible and inflatable material that constitute a screen elevating from t bottom of the aquatic basin to a level above the water. This layer is constituted by a synthetic material, whose resistanc must be specified, and it is made up of inflatable cushions, whose dimensions must also be specified for each case.
The inflatable layer's cushions are filled with water, injected under pressure. The upper cushions, close to the wat line, are filled with air, also injected under pressure.
The anchorage of the system is provided by the adhesio of the guide pipe to the surface of the basin. The pipe diameter, as well as of the volume and density of the filler pulp are specified to withstand the shear stress and buoyancy forces.
If required, a grid of cables supported on the ground and on the aquatic basin can be used to keep the dam in place. This grid, installed on the exterior of the system, can preve excessive bending of the inflatable layer or even its draggin due to movements of the column of water, wind action, surface of submerged currents.
The following schematic figures of the proposed invention are provided to assist in the understanding of the invention:
- Figure 1 - cross section of lateral view of the dam. - Figure 2 - perspective of the dam erected in a lake.
IV. Detailed Description
As can be observed in these figures, the flexible dam, object of the present invention, is constituted by a high density polyethylene guide pipe (1) , completely filled with a pulp made of a baryte emulsion (2) , the said guide pipe (1) encased by an inflatable layer (3) made of PVC or similar material, containing inflatable cushions (4) filled with wate and inflatable cushions (5) filled with air, all provided wit a valve.
The first step in the design the dam is the measuremen of all variables for the particular case under consideration. The size of the area to be contained, topography, characterization of the basin constituents, presence of currents, measurement of their energy, etc., are critical elements for the specification of materials to be used in the construction of the dam.
The information collected at the site is used to specify the guide pipe including: type of material, resistance and flexibility, diameter, density and composition of the filler pulp.
The length of the guide pipe must be chosen to allow ground support, in order to facilitate pumping and moving of the high density pulp. It must cover the entire perimeter of the area to be contained, following all changes in the topography of the basin.
The guide pipe (1) is completely encased by a flexible and inflatable layer (3) , made of a suitable material to be specified. This layer is composed by sections with appropriate dimensions, each containing a valve or pressurized air and liquid injection.
The flexible and inflatable layer must be sized to provide a screen that will completely isolate the area to be contained. The size of this layer is defined by the length of the guide pipe its elevation above the water line. After the inflatable, flexible layer is installed, pressurized water is injected, in the lower section of the screen and pressurized air is injected in the section close t the water line. If required, the screen can be kept in a fixed positio by an anchorage system composed of stretched cabies, located either on the ground or submerged in the water. A grid of stretched cables can also be installed around the system, to prevent excessive bending of the screen, thus avoiding build of shear stress that may shift the position of the system. After installation, the dam remains in place in the containment area, requiring only periodic inspection. Repairs can be conducted on some of the sections without requiring deactivation of the dam. The dam can be dismantled following a reverse procedur that is, deflating the segments by removing its contents (wat or air) , removing the guide pipe filler by pumping the high density pulp and finally by removing the system from the basi After reconditioning, the flexible dam can be installe again, at another location requiring containment.
The flexible dam offers a large number of advantages. The following can be highlighted:
- quick installation and removal
- low construction, installation, maintenance and removal cos - it can be reused
- preservation of the original topography, with no alteration to the original basin contour
- environmental protection, as operations can be conducted in water bodies (lakes, lagoons, bays and rivers) with no contaminantion

Claims

CLAIMS I Claim
1. Flexible Dam to be used to temporarily isolat sections of lakes, bays even streams eith low water flowrates, defined by an estructure constitued by a guide pipe (1) , made of high density polyethilene, filled, by pumping with a baritine pulp (2) . The guide pipe (1) is encased by a flexibl and inflatable layer of PVC (3) or done by other similar material, with inflatable layer's cushions endowed with pressure valvules, filled with water (4) and air (5).
PCT/BR1993/000002 1992-11-06 1993-01-12 Flexible dam Ceased WO1994011582A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP6510419A JPH08503034A (en) 1992-11-06 1993-01-12 Flexible dam
AU32523/93A AU3252393A (en) 1992-11-06 1993-01-12 Flexible dam

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR9204325A BR9204325A (en) 1992-11-06 1992-11-06 Flexible dike.
BRPI9204325 1992-11-06

Publications (1)

Publication Number Publication Date
WO1994011582A1 true WO1994011582A1 (en) 1994-05-26

Family

ID=4055220

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR1993/000002 Ceased WO1994011582A1 (en) 1992-11-06 1993-01-12 Flexible dam

Country Status (5)

Country Link
JP (1) JPH08503034A (en)
AU (1) AU3252393A (en)
BR (1) BR9204325A (en)
CA (1) CA2083890C (en)
WO (1) WO1994011582A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19651389A1 (en) * 1996-12-11 1998-06-25 Ingbuero Heinrich Quante Flood prevention construction for rivers, lakes, sea, etc
WO2005047607A3 (en) * 2003-11-13 2008-01-03 Boris Muvrin Stably tighted self-rising boom used for sea protection during accidental situations in marinas
WO2005047608A3 (en) * 2003-11-13 2008-01-03 Boris Muvrin Stably tighted self-rising boom used for sea protection at fuel stations in marinas
US7811028B1 (en) * 2007-02-09 2010-10-12 Agrecol, Llc Hooded check tube
CN104234000A (en) * 2014-08-26 2014-12-24 浙江水利水电学院 Self-slippage energy-storage sluicing device and sluicing method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113957864A (en) * 2021-10-14 2022-01-21 易甲贵 Debris cleaning device in ditch for hydraulic engineering irrigation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318130A1 (en) * 1973-04-11 1974-10-24 Guenter Mueller DEVICE FOR DIVIDING WATER BASINS
GB2117326A (en) * 1982-03-26 1983-10-12 Hoyle Marine Limited Oil containment boom
WO1991008348A1 (en) * 1989-11-24 1991-06-13 Chaplin Ching Peng Chang Oil spill area containment system
WO1991014618A1 (en) * 1990-03-26 1991-10-03 Andrei Kemp Oiltight skirt for vessels
US5074709A (en) * 1990-01-29 1991-12-24 Stensland Gary E Device and method for containing fluid spills

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318130A1 (en) * 1973-04-11 1974-10-24 Guenter Mueller DEVICE FOR DIVIDING WATER BASINS
GB2117326A (en) * 1982-03-26 1983-10-12 Hoyle Marine Limited Oil containment boom
WO1991008348A1 (en) * 1989-11-24 1991-06-13 Chaplin Ching Peng Chang Oil spill area containment system
US5074709A (en) * 1990-01-29 1991-12-24 Stensland Gary E Device and method for containing fluid spills
WO1991014618A1 (en) * 1990-03-26 1991-10-03 Andrei Kemp Oiltight skirt for vessels

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19651389A1 (en) * 1996-12-11 1998-06-25 Ingbuero Heinrich Quante Flood prevention construction for rivers, lakes, sea, etc
WO2005047607A3 (en) * 2003-11-13 2008-01-03 Boris Muvrin Stably tighted self-rising boom used for sea protection during accidental situations in marinas
WO2005047608A3 (en) * 2003-11-13 2008-01-03 Boris Muvrin Stably tighted self-rising boom used for sea protection at fuel stations in marinas
US7811028B1 (en) * 2007-02-09 2010-10-12 Agrecol, Llc Hooded check tube
CN104234000A (en) * 2014-08-26 2014-12-24 浙江水利水电学院 Self-slippage energy-storage sluicing device and sluicing method thereof
CN104234000B (en) * 2014-08-26 2016-01-27 浙江水利水电学院 From line slip accumulation of energy erosion and deposition device and erosion and deposition method

Also Published As

Publication number Publication date
BR9204325A (en) 1994-06-28
CA2083890A1 (en) 1994-05-07
JPH08503034A (en) 1996-04-02
AU3252393A (en) 1994-06-08
CA2083890C (en) 1994-05-07

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