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US3576109A - Flexible wall means - Google Patents

Flexible wall means Download PDF

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Publication number
US3576109A
US3576109A US816337A US3576109DA US3576109A US 3576109 A US3576109 A US 3576109A US 816337 A US816337 A US 816337A US 3576109D A US3576109D A US 3576109DA US 3576109 A US3576109 A US 3576109A
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US
United States
Prior art keywords
water
wall members
dam
side portions
dammed
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
Application number
US816337A
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English (en)
Inventor
Leslie Arthur Hopkins
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.)
Hovercraft Development Ltd
Original Assignee
Hovercraft Development Ltd
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 Hovercraft Development Ltd filed Critical Hovercraft Development Ltd
Application granted granted Critical
Publication of US3576109A publication Critical patent/US3576109A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

  • This invention relates to flexible wall means for forming water dams.
  • the flexible wall means may comprise a succession of independently deflectable flexible wall members, each having a middle or outer portion to form a boundary sur face of the dam and a pair of side portions to define with the outer portion a concavity open to the water to be retained, adjacent side portions of neighboring wall members being contiguously arranged, and means being provided to constrain the wall members against deflection by the pressure exerted thereon by the head of water retained thereby, whereby distension of the wall members by the said pressure urges the contiguous side portions of neighboring wall members towards each other.
  • difl'rculty may be en countered in arranging for the required differential pressure to be set up between opposite sides of the dam, so as to bring the wall members into sealing relationship with each other and the bed of the water basin.
  • control of the wall means during establishment or removal of a dam to ensure that they adopt the right position and are not swept away can present problems.
  • a water darn comprises a succession of independently deflectable flexible wall members each having a middle portion to form a boundary surface of the dam, and a pair of side portions extending away from the said surface towards the body of water to be retained by the dam, the middle portion in use being downwardly inclined towards the said body of water, further wall means being provided extending between the side portions of the wall members so as to define a succession of upwardly open substantially watertight bags, adjacent side portions of neighboring wall members being contiguously arranged, provision being made to constrain the wall members against deflection away from the body of water to be dammed, so that upon filling the said bags with water, the adjacent side portions of neighboring wall members are urged together and the wall members are caused to sink into sealing engagement with the bed of the water basin to be dammed.
  • the wall members do not have to be arranged so that their interiors are in direct communication with the body of water to be dammed, and the differential pressure on opposite sides, required both to effect a seal between successive wall members and between the wall members and the bed of the water basin to be dammed, can be provided solely by filling the upwardly open bags with water.
  • this arrangement removes any difficulty in establishing the required differential pressure across the dam, establishment and removal of the dam with flexible wall means of this invention is greatly facilitated.
  • the succession of upwardly open bags which the wall members comprise may readily be floated across a river or stream, either in an empty or partially filled condition and anchored at each end in the positions required. Subsequent filling of the bags will then establish the dam without difficulty or any danger of the wall members being disorientated or it being swept away.
  • the wall members may readily be refloated by pumping water from the bags they define.
  • the additional wall means are preferably arranged inwardly of the edges of the side portions, so as to leave strips of free material. Adjacent strips of the side portions of neighboring wall members will then be urged together by the pressure created by the head of water retained by the dam.
  • wall members of a dam in accordance with the present invention can be made of substantially greater height than the depth of water to be dammed thereby and filled to a level well above the level of the water being dammed.
  • the head of water within thebags defined by the wall members will ensure that a sealing pressure is present to urge their side portions together up to and above the level of the water retained by the dam.
  • FIG. l is a sectional side elevation of a wall member for a water dam in accordance with the present invention.
  • FIG. 2 is a diagrammatic plan view of a dam in accordance with the invention.
  • FIG. 3 shows a pair of dams in accordance with FIGS. l and 2 arranged to define a dry area between them.
  • a water dam 1 comprises a succession of independently deflectable flexible wall members 4.
  • the members are formed of water-impervious flexible sheet material and each comprises a middle portion 5 which, in operation, is arranged to be downwardly inclined towards the body of water 2 to be dammed, and a pair of substantially triangular side portions 6, which extend away from the portion 5, that is away from the space 3 defined by the darn.
  • adjacent side portions 6 of neighboring wall members 4 are arranged to be contiguous.
  • the dam may be arranged to be supported, and anchored at each end, inany desired manner, such as, for example, by means of elongated support members 8, which may be in the form of ropes, cables, rods or the like, which are attached by stakes 9, driven into opposite banks 7 of the river, or other body of water, to be dammed.
  • the upper ends of the wall members will be supported above the surface 33 of the water to be dammed by, for example, securing the upper edges 10 of the side portions 6 to the support members 8, in any convenient manner, e.g. by lacing (not shown).
  • additional wall means 30, formed, for example, of the same flexible sheet material as the remainder of the wall members, are arranged to extend between the side portions 6 of the wall members, in effect to define a succession of upwardly open substantially triangular fluidtigbt bags.
  • the further wall means 30 are downwardly inclined so as to form an angle of substantially with the middle portions 5 of the wall members, and are located a short distance in from the downwardly inclined edges 31 of the side portions, to leave strips of free material at those edges.
  • these bags will be filled with water to a level at least equal to the level 33 of the water to be dammed. Filling the bags with water, as mentioned at the outset, results in the adjacent side portions 6 of the neighboring wall members 4 being urged together to provide a seal between neighboring wall members and further, the dam when. sufficiently filled with water will sink to form a seal with the bed of the water basin being dammed.
  • the side portions 6 effectively serve as constraining means which constrain the middle portions 5 of the wall members 4 against deflection towards the space 3.
  • the strips of free material at the edges 31 of the side portions of the wall members provide an additional seal, the strips of adjacent side portions of neighboring wall members being urged together by pressure exerted by the head of water being retained by the dam.
  • two dams may be provided arranged as indicated in FIG. 3. It is desirable to cater for overflow by the provision of a pipe or conduit 35 interposed between a pair of wall members of each dam and extending across the space 34. The wall members will effectively seal around the pipe 35. Arranging the pipe 35 in this manner avoids scouring of the bed of a stream which might make the establishment of a seal between it and the dam difficult.
  • the wall members 4 may be attached to each other by, for example, stitching the downwardly inclined edges 31 of their side portions together.
  • the upper edges of the side portions may be secured together.
  • the flexible wall means may readily be spread across the surface of the water to be dammed, since the upwardly open bags, that the wall members define in combination with the additional wall means 30, can be floated without difficulty, either in an empty or partially filled condition.
  • a water dam comprising a succession of independently deflectable flexible wall members of a depth at least equal to the depth of the water to be dammed, each wall member having a middle portion to form a boundary surface of the dam, and a pair of side portions extending away from the said surface towards the body of water to be retained by the dam, the middle portion in use being downwardly inclined towards the said body of water, further wall means extending between the side portions of the wall members and being downwardly inclined away from the said body of water so as to define a succession of upwardly open substantially triangular watertight bags, and means for supporting at least the upper edges of the said middle portions and said further wall means at a level not less than the level of the water to be dammed, so as to hold the wall members against deflection away from the body of water to be dammed, adjacent side portions of neighboring wall members being contiguously arranged, so that upon filling the said bags with water, the adjacent side portions of neighboring wall members are urged together and the wall members are urged downwardly into sealing engagement with the bed of the
  • a water dam comprising a succession of independently deflectable flexible wall members of a depth at least equal to the depth of the water to be dammed, each wall member having a middle portion to form a boundary surface of the dam, and a pair of substantially triangular side portions extending away from the said surface towards the body of water to be retained by the dam, the middle portion in use being downwardly inclined towards the said body of water and each side portion having a free edge downwardly inclined away from the said body of water, further wall means extending between the side portions of the wall members and being downwardly inclined away from the said body of water so as to define a succession of upwardly open substantially triangular watertight bags, and means for supporting at least the upper edges of the said middle portions of the wall members and said further wall means at a level not less than the level of the water to be dammed, so as to hold the wall members against deflectron away from the body of water to be dammed, ad acent side portions of neighboring wall members being contiguously arranged, so that upon filling the said bags
  • a method of forming a dam across a water basin comprising the steps of spreading across the water basin a succession of flexible upwardly open substantially triangular watertight bags, each bag having substantially parallel side portions, securing the bags with adjacent side portions of neighboring bags in contiguous relationship to support means at a level not less than the level of the water to be dammed, so as to hold the said bags against deflection away from the body of water to be dammed, and filling the bags with water, so as'to urge adjacent side portions of neighboring bags into sealing contact with each other and to cause the bags to be urged downwardly into sealing engagement with the bed of the water basin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Barrages (AREA)
  • Revetment (AREA)
  • Tents Or Canopies (AREA)
US816337A 1968-04-16 1969-04-15 Flexible wall means Expired - Lifetime US3576109A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB07896/68A GB1270653A (en) 1968-04-16 1968-04-16 Improved flexible dam

Publications (1)

Publication Number Publication Date
US3576109A true US3576109A (en) 1971-04-27

Family

ID=10103148

Family Applications (1)

Application Number Title Priority Date Filing Date
US816337A Expired - Lifetime US3576109A (en) 1968-04-16 1969-04-15 Flexible wall means

Country Status (5)

Country Link
US (1) US3576109A (xx)
DE (1) DE1919119A1 (xx)
FR (1) FR2006259A6 (xx)
GB (1) GB1270653A (xx)
NL (1) NL6905733A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928980A (en) * 1969-10-06 1975-12-30 Pneumatiques Caoutchouc Mfg Inflatable water-retaining barrier

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3712409A1 (de) * 1987-04-11 1988-10-20 Joachim Ing Grad Gillsch Schutzvorrichtung gegen steigendes hochwasser oder rueckhaltesicherung fuer umweltschaedigende fluessige medien

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609666A (en) * 1947-07-02 1952-09-09 Mesnager Jacques Dam
US3211246A (en) * 1961-09-13 1965-10-12 Vickers Armstrongs Ltd Air cushion vehicle
US3213628A (en) * 1960-08-11 1965-10-26 Herman M Serota Water filled plastic dam structure
US3246474A (en) * 1960-10-20 1966-04-19 Mesnager Jacques Jean Emile Flexible, vertically-adjustable dam

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609666A (en) * 1947-07-02 1952-09-09 Mesnager Jacques Dam
US3213628A (en) * 1960-08-11 1965-10-26 Herman M Serota Water filled plastic dam structure
US3246474A (en) * 1960-10-20 1966-04-19 Mesnager Jacques Jean Emile Flexible, vertically-adjustable dam
US3211246A (en) * 1961-09-13 1965-10-12 Vickers Armstrongs Ltd Air cushion vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928980A (en) * 1969-10-06 1975-12-30 Pneumatiques Caoutchouc Mfg Inflatable water-retaining barrier

Also Published As

Publication number Publication date
DE1919119A1 (de) 1970-10-08
FR2006259A6 (xx) 1969-12-26
NL6905733A (xx) 1969-10-20
GB1270653A (en) 1972-04-12

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